EXHIBIT B
`EXHIBIT B
`
`APPLE ET AL. EXHIBIT 1007
`
`1
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`
`EXHIBIT B
`
`APPLE ET AL. EXHIBIT 1007
`
`1
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`
`
`1(a)
`
`Claim
`A power amplifier with
`power detection,
`comprising:
`
`Infringement Claim Chart for the Infringement of
`U.S. Patent No. 8,947,164 by Apple
`
`Application to Qualcomm SDR865 and Skyworks SKY58245-19 in Exemplary iPhone 12 Pro Max
`Arigna makes these contentions based on the information reasonably available at this time. Its investigation
`is ongoing. Defendant Apple Inc. (“Apple”) has not produced documents concerning its infringement of U.S.
`Patent 8,947,164 (the “’164 Patent”). Claim construction proceedings have not commenced. Invalidity
`contentions have not been served. Arigna reserves its right to modify, supplement, and/or amend these
`contentions as additional evidence and information becomes available, including in light of discovery,
`invalidity contentions, prior art, claim construction, or any information provided by Apple or any other party
`or nonparty to this action.
`
`The Qualcomm SDR865 transceiver and Skyworks SKY58245-19 front-end module are semiconductor
`devices used in mobile devices, such as smartphones and tablets.
`
`Defendant Apple makes, uses, sells, offers for sale, and/or imports mobile devices that contain the SDR865
`and SKY58245-19 and/or similar components (the “Accused Products”). For example, the exemplary Apple
`iPhone 12 Pro Max incorporates the SDR865 and SKY58245-19. See, e.g.:
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`1
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`2
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`Exemplary Accused Product: Apple iPhone 12 Pro Max
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`2
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`3
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`The Accused Products infringe claims 1, 2, 5, 7, 8, 9, 10, 11, 12, 13, 14, and 17 of the ’164 Patent. As shown
`in this claim chart, the SDR865 transceiver and SKY58245-19 front-end module in the exemplary Apple
`iPhone 12 Pro Max infringe claims 1, 2, 5, 7, 8, 9, 10, 11, 12, 13, 14, and 17 of the ’164 Patent. See infra.
`
`The Apple iPhone 12 Pro Max is depicted below as an exemplary device representative of Apple’s Accused
`Products. On information and belief, Apple’s other Accused Products, as identified in Arigna’s Disclosures
`pursuant to this Court’s November 17, 2021 Standing Order Governing Proceedings – Patent Cases, infringe
`the ’164 Patent in a manner identical or substantially similar to that described below and depicted for the
`Apple iPhone 12 Pro Max. These other Accused Products, including the Apple iPhone 12, iPhone 12 mini,
`iPhone 12 Pro, iPhone 13, iPhone 13 Pro, iPhone 13 Pro Max, iPhone 13 mini, iPhone 11, iPhone 11 Pro,
`iPhone 11 Pro Max, iPhone XS, iPhone XS Max, iPhone XR, iPad Pro 11, iPad Pro (2019), iPad Air (3rd
`generation), iPad Air (4th generation), and iPad mini (2019) either incorporate the SDR865 transceiver and
`SKY58245-19 front-end module in an identical or substantially similar manner to the Apple iPhone 12 Pro
`Max charted herein, or incorporate a substantially similar transceiver and front-end module that, on
`information and belief, infringe claims 1, 2, 5, 7, 8, 9, 10, 11, 12, 13, 14, and 17 of the ’164 Patent in an
`identical or substantially similar manner as the SDR865 transceiver and SKY58245-19 front-end module
`incorporated in the exemplary Apple iPhone 12 Pro Max charted herein. See infra.
`
`The images and circuit diagrams herein are provided to further explain Arigna’s infringement theory but are
`exemplary and not limiting. The absence or incompleteness of an image or circuit diagram, if any, should
`not be construed as any kind of disclaimer of any infringement by similar or substantially similar
`functionality.
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`3
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`4
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`For example, the SDR865 transceiver and SKY58245-19 front-end module are identified in the below
`annotated and exemplary images of the Apple iPhone 12 Pro Max. See, e.g.:
`
`Exemplary Accused Product: Apple iPhone 12 Pro Max
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`4
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`5
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`
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`Exemplary Accused Product: Apple iPhone 12 Pro Max
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`5
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`To the extent this preamble is considered limiting, the SDR865 transceiver and SKY58245-19 front-end
`module in the exemplary Apple iPhone 12 Pro Max contain a power amplifier with power detection. For
`example, a power amplifier is present in the SKY58245-19 with power detection provided by the SDR865.
`These elements are identified in the below annotated and exemplary diagram. See, e.g.:
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`6
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`7
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`A power amplifier in the SKY58245-19 has power detection provided by the SDR865.
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`7
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`Arignaasserts that each element of claims 1, 2, 5, 7, 8, 9, 10, 11, 12, 13, 14, and 17 of the ’164 Patentis
`present literally in Apple’s accused devices and methods, including but not limited to the exemplary Apple
`iPhone 12 Pro Max,as represented by the exemplary information cited for each element below; butto the
`extent that any claim construction or other circumstanceresults in the accused devices and methods falling
`outside the literal scope of any asserted claim, Arigna asserts in the alternative that each element of each
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`9
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`asserted claim is met by Apple’s accused devices and methods through the doctrine of equivalents because
`Apple’s accused devices and methods are insubstantially different than the patented devices and methods
`and perform the same functions, in substantially the same ways, to achieve the same results as the patented
`devices and methods.
`
`The power amplifier with power detection in the SDR865 and SKY58245-19, as present in the exemplary
`Apple iPhone 12 Pro Max, comprises a radio frequency (RF) power amplifier having a gain stage that
`includes a gain stage input, a gain stage output, and a feedback loop coupled between an input and an output
`of the power amplifier.
`
`1(b)
`
`a radio frequency (RF)
`power amplifier having a
`gain stage that includes a
`gain stage input, a gain
`stage output, and a feedback
`loop coupled between an
`input and an output
`of the power amplifier;
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`9
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`10
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`A radio frequency (RF) power amplifier is present in the SKY58245-19.
`
`. Radio frequency (RF)
`power amplifiers (boxed in red) are shown in the below annotated and exemplary image of the SKY58245-
`19. See, e.g.:
`
`The radio frequency (RF) power amplifier in the SKY58245-19 has a gain stage that includes a gain stage
`input, a gain stage output, and a feedback loop coupled between an input and an output of the power
`amplifier.
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`10
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`11
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`1(c)
`
`a detection circuit having a
`first detection circuit input
`electrically coupled to the
`gain stage input and having
`a detection circuit output;
`
`The power amplifier in the SKY58245-19 with power detection in the SDR865, as present in the exemplary
`Apple iPhone 12 Pro Max, also comprises a detection circuit having a first detection circuit input electrically
`coupled to the gain stage input and having a detection circuit output.
`
`For example, as identified in the below annotated and exemplary diagram of the Apple iPhone 12 Pro Max,
`a detection circuit present in the SDR865 (highlighted in light blue) has a first detection circuit input
`electrically coupled to the gain stage input (highlighted in purple) of a power amplifier in the SKY58245-
`19. See, e.g.:
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`11
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`12
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`12
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`14
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`Therefore, a first detection circuit input is electrically
`coupled to the gain stage input of the power amplifier. See, e.g.:
`
`.
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`15
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`
`Chip 202
`
` Baseband Chip
`204
`Control
`|
`Processor /
`|
`Circuitry 280
`[Power 1}
`Power
`|
`Estimation
`||
`
`273
`Power
`Estimation
`
`
`
`Tx Gain
`Contro’
`
`
`
`
`For example,
`the below exemplary diagram from Figure 2 in Qualcomm’s U.S. Patent Application
`Publication No. 2015/0280946 Al showsa detection circuit receiving a LO signal used in a transmit path
`and the output from a power amplifier to estimate the forward powerof the power amplifier. See, e.g.:
`
`
`
`
`
`
`
`RF Signal
`(FB RX)
`223 +
`
`16
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`17
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`17
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`1(d)
`
`an amplitude control circuit
`and a phase control circuit
`electrically coupled together
`in series between the gain
`stage output and a second
`detection circuit input;
`
`The power amplifier in the SKY58245-19 with power detection in the SDR865, as present in the exemplary
`Apple iPhone 12 Pro Max, also comprises an amplitude control circuit and a phase control circuit electrically
`coupled together in series between the gain stage output and a second detection circuit input.
`
`For example, as indicated in the annotated and exemplary diagram of the Apple iPhone 12 Pro Max below,
`the gain stage output of the power amplifier in the SKY58245-19 is connected to a second detection circuit
`input in the SDR865
`See, e.g.:
`
`17
`
`18
`
`
`
`As shown in the below annotated and exemplary circuit extraction, an amplitude control circuit and phase
`control circuit (boxed in yellow) are electrically coupled in series between the gain stage output (highlighted
`in orange) and a second detection circuit input on the SDR865. See, e.g.:
`
`18
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`19
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`An amplitude control circuit and a phase control circuit are electrically coupled together in series between
`the gain stage output and the second detection circuit input.
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`20
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`20
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`
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`1(e)
`
`wherein the amplitude
`control circuit and the phase
`control circuit produce a
`signal received by the
`second detection circuit
`input so that the detection
`circuit detects a signal at the
`output of the detection
`circuit that has a power
`proportional to a forward
`power output of the power
`amplifier.
`
`As part of the power amplifier with power detection in the SDR865 and SKY58245-19, as present in the
`Apple iPhone 12 Pro Max, the amplitude control circuit and the phase control circuit produce a signal
`received by the second detection circuit input so that the detection circuit detects a signal at the output of the
`detection circuit that has a power proportional to a forward power output of the power amplifier.
`
`. The detection circuit also receives the
`first detection circuit input and the result is used to estimate the forward power output of the power amplifier.
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`20
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`21
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`
`
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`Estimation
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`| RSB,LOFT.
`Estimation
`282
`
`Gain
`Estimation
`283
`————-
`|
`|
`
`Chip 202
`
`
`
`Through this process, the detection circuit in the SDR865 detects a signal at the output ofthe detection circuit
`that has a power proportional to a forward power output of the power amplifier. This functionality is
`presented, for example, in the below exemplary diagram from Figure 2 in Qualcomm’s U.S. Patent
`Application Publication No. 2015/0280946 A1. Asidentified below,a detection circuit receives a LO signal
`used in the transmit path and the output from the power amplifier to estimate the forward powerof the power
`amplifier. See, e.g.:
`
`
`Filter
`
`BDigiia) Baseband Chip |
`204
`
`
`
`
`
`Tx Gain
`Contro!
`
`
`
`
`
`
`
`
`Estimation
`
`RF Signal
`(FB RX)
`223 =
`
`21
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`22
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`22
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`
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`As a further example, the following diagram and description from U.S. Patent No. 9,948,409 B2 outline how
`one can extract the forward power of the power amplifier using a signal used in the transmit path and a
`feedback signal from the output of the power amplifier. See, e.g.:
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`22
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`23
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`5
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`60
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`6s
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`Power F may, for example, be calculated aceording to
`Equation (1) by summing the square of the DC voltageI,,,-
`ofthe T signal 140 and the square of the DC voltage Q,,,. of
`the Q signal 142, and subsequently calculating the square
`root of the sum.
`
`Pealtie + Oh
`
`The calculated power is proportional to the actual power of
`the selected RF signal 130 and can therefore be used to
`monitor the transmit power of the RFtransmitter 102, and to
`ensure that the RF transmitter 102 does not violate rules and
`regulations
`regarding maximum transmit power. For
`example, the calculated power can be translated to actually
`power using a model or lookup table translating between
`calculated power and actual power.
`Insome embodiments, phase Ph is calculated according to
`Equation(2) bydividing the DC voltage Q),,-- of the Q signal
`142 by the DC voltage Is of the I signal 140, and subse-
`quently calculating the arctangent of the quotient.
`
`“
`Phe arctanfoc)
`foe
`
`Pl]
`“
`
`The calculated phase is proportional to the actual phase of
`the selected RF signal 130 and can therefore be used for
`MIMOand beamforming applications of the RFtransmitter.
`
`23
`23
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`24
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`24
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`
`The power detection device of claim 1 in the SDR865 and SKY58245-19, as present in the exemplary Apple
`iPhone 12 Pro Max, comprises an amplitude control circuit that is a first amplitude control circuit and further
`comprises a second amplitude control circuit that is electrically coupled in series between the first detection
`circuit input and the gain stage input.
`
`2
`
`The power detection device
`of claim 1, wherein the
`amplitude control circuit is
`a first amplitude control
`circuit and further
`comprising a second
`amplitude control circuit
`that is electrically coupled
`in series between the first
`detection circuit input and
`the gain stage input.
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`24
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`25
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`As shown in the below annotated and exemplary circuit extraction, the SDR865 has a first amplitude control
`circuit (boxed in yellow). See, e.g.:
`
`25
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`26
`
`
`
`Therefore, the power detection device of claim 1 comprises a second amplitude control
`circuit (boxed in yellow) that is electrically coupled in series between the first detection circuit input and the
`gain stage input. See, e.g.:
`
`See also claims 1(a)–(d), supra.
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`26
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`27
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`
`
`5
`
`The power detection circuit
`of claim 1, wherein the gain
`stage output of the power
`amplifier exhibits a voltage
`standing wave ratio
`(VSWR) that is greater than
`one.
`
`The power detection device of claim 1 in the SDR865 and SKY58245-19, as present in the exemplary Apple
`iPhone 12 Pro Max, comprises a gain stage output of the power amplifier in the SKY58245-19 which exhibits
`a voltage standing wave ratio (VSWR) that is greater than one.
`
`For the VSWR to be exactly one to infinite precision, the impedance of the load (an antenna) would need to
`precisely match the impedance of the transmission line or feeder to the antenna. A person of skill in the art
`would understand that any fabricated circuit will have component values that do not perfectly match
`the impedance of the transmission line or feeder to the antenna, and therefore the VSWR will always be
`greater than one.
`
`27
`
`28
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`
`
`7(a)
`
`A method of detecting
`forward power in a
`detection circuit coupled to
`a power amplifier,
`comprising:
`
`To the extent this preamble is considered limiting, the SDR865 transceiver and SKY58245-19 front-end
`module in the exemplary Apple iPhone 12 Pro Max practice a method of detecting forward power in a
`detection circuit coupled to a power amplifier.
`
`A power amplifier is present in the SKY58245-19 with power detection provided by the SDR865.
`
`Radio frequency (RF) power amplifiers (boxed in red) are shown in the below annotated and
`exemplary image of the SKY58245-19. See, e.g.:
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`28
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`29
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`
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`A power amplifier in the SKY58245-19 has power detection provided by the SDR865.
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`29
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`30
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`As further explained herein, see claims 7(b) to 7(d), this detection circuit is coupled to the power amplifier
`and practices a method of detecting forward power.
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`30
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`31
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`7(b)
`
`coupling in series a first
`amplitude control circuit to
`an input of a gain stage of a
`power amplifier to produce
`a corrected input signal;
`
`The power amplifier in the SKY58245-19 with power detection in the SDR865, as present in the exemplary
`Apple iPhone 12 Pro Max, practices the method of 7(a) comprising coupling in series a first amplitude
`control circuit to an input of a gain stage of a power amplifier to produce a corrected input signal.
`
`This first amplitude control circuit is coupled in series with an input of a gain stage of a power amplifier in
`the SKY58245-19.
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`31
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`32
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`
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`Therefore, the method of detecting forward power of claim 7(a) comprises coupling a first amplitude control
`circuit to an input of a gain stage of a power amplifier to produce a corrected input signal.
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`32
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`33
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`7(c)
`
`coupling in series a second
`amplitude control circuit
`and a second phase control
`circuit to an output of the
`gain stage of the power
`amplifier to produce a
`corrected output signal;
`
`The power amplifier in the SKY58245-19 with power detection in the SDR865, as present in the exemplary
`Apple iPhone 12 Pro Max, practices the method of 7(a) comprising coupling in series a second amplitude
`control circuit and a second phase control circuit to an output of the gain stage of the power amplifier to
`produce a corrected output signal. For example, as indicated in the annotated and exemplary diagram of the
`Apple iPhone 12 Pro Max below, the gain stage output of the power amplifier in the SKY58245-19 is
`connected to a second detection circuit input in the SDR865
` See, e.g.:
`
`33
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`34
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`As shown in the below annotated and exemplary circuit extraction of the SDR865, a second amplitude
`control circuit and second phase control circuit (boxed in yellow) are electrically coupled in series to an
`output of the gain stage of the power amplifier (highlighted in orange). See, e.g.:
`
`34
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`35
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`See also claim 1(d) above.
`
`The power amplifier in the SKY58245-19 with power detection in the SDR865, as present in the exemplary
`Apple iPhone 12 Pro Max, practices the method of 7(a) comprising summing the corrected input signal and
`the corrected output signal to produce a summed node signal that is proportional to the forward power output
`of the power amplifier.
`
`7(d)
`
`summing the corrected input
`signal and the corrected
`output signal to produce a
`summed node signal that is
`proportional to the forward
`power output of the power
`amplifier; and
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`35
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`36
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`The summednodesignal produced is proportional to the forward poweroutput of the power amplifier. See
`also claim 1(e) above.
`
`The power amplifier in the SKY58245-19 with power detection in the SDR865, as present in the exemplary
`applying the summed node
`Apple iPhone 12 Pro Max,practices the method of 7(a) comprising applying the summednodesignalto the
`signal to the detection
`circuit to detect the forward|detection circuit to detect the forward poweroutput.
`
`poweroutput.
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`Digits)Baseband Chip|
`204
`Processor/
`Control
`Circuitry 280
`Power
`Estimation
`
`|
`
`Estimation
`
`RF Signal
`(FB RX)
`223 ~
`
`
`
`RSB, LOFT.
`oc
`Estimation
`282
`Gain
`Estimation
`
`Chip 202
`
`
`
`the below exemplary diagram from Figure 2 in Qualcomm’s U.S. Patent Application
`For example,
`Publication No. 2015/0280946 A1 showsa detection circuit receiving an input signal used in a transmit path
`and an output signal from a power amplifier to estimate the forward power of the power amplifier, the
`estimated forward powerproducedat 273. See, e.g.:
`
`Feedback Receive
`Path 25
`Low-IF/
`f
`Zero-lF
`Signa’
`
`and
`
`Sampling
`
`Cancellat
`
`:
`
`matior
`
`
`
`See also claim 1(e) above.
`
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`38
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`The power amplifier in the SKY58245-19 with power detection in the SDR865, as present in the exemplary
`Apple iPhone 12 Pro Max, practices the method of claim 7, wherein the summed node signal is a radio
`frequency (RF) signal having a power and further comprising producing a direct current (DC) output signal
`having a power that is proportional to the summed node signal power.
`
`8
`
`The method of claim 7,
`wherein the summed node
`signal is a radio frequency
`(RF) signal having a power
`and further comprising
`producing a direct current
`(DC) output signal having a
`power that is proportional to
`the summed node signal
`power.
`
`The power amplifier in the SKY58245-19 with power detection in the SDR865, as present in the exemplary
`Apple iPhone 12 Pro Max, practices the method of claim 7 further comprising producing a direct current
`(DC) output signal having a power that is proportional to the summed node signal power.
`
`For example, the below exemplary diagram from Figure 2 in Qualcomm’s U.S. Patent Application
`Publication No. 2015/0280946 A1 shows a detection circuit wherein a summed node signal (e.g., the output
`
`39
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`
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`
`Circ
`
`9
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`a
`Circuit
`
`on
`248
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`11
`
`¢
`
`ofmixer 240)is a RF signal having a powerand producing a DC outputsignal(at detection circuit node 273)
`having a powerthatis proportional to the summed nodesignal power.See,e.g.:
`SaSRASSIS a Ba a ee 1
`Feedback Receive Path 250
`Baseband Chip ;
`4
`'
`Low-IF
`254
`204
`\
`Zero-IF
`1
`Signa
`Control
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`Processor/
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`
`Power
`Estimation
`284
`RSB, LOFT.
`oc
`Estimation
`282
`Gain
`Estimation
`
`Chip 202
`
`
`
`
`
`
`
`Tx Gain
`Contro:
`
`
`
`2875
`
`RF Signal
`(FB RX)
`223 +
`
`
`
`
`
`40
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`9
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`The method of claim 7,
`further comprising coupling
`a first phase control circuit
`in series with the first
`amplitude control circuit
`between the gain stage input
`and the first amplitude
`control circuit.
`
`The power amplifier in the SKY58245-19 with power detection in the SDR865, as present in the exemplary
`Apple iPhone 12 Pro Max, practices the method of claim 7 and further comprising coupling a first phase
`control circuit in series with the first amplitude control circuit between the gain stage input and the first
`amplitude control circuit.
`
`The first phase control circuit is coupled between the first amplitude control circuit and the gain stage input
`of a power amplifier in the SKY58245-19.
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`10
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`The method of claim 7,
`wherein the output signal of
`the power amplifier has a
`voltage standing wave ratio
`that is greater than one.
`
`The power amplifier in the SKY58245-19 with power detection in the SDR865, as present in the exemplary
`Apple iPhone 12 Pro Max, practices the method of claim 7, wherein the output signal of the power amplifier
`in the SKY58245-19 has a voltage standing wave ratio (VSWR) that is greater than one.
`
`For the VSWR to be exactly one to infinite precision, the impedance of the load (an antenna) would need to
`precisely match the impedance of the transmission line or feeder to the antenna. A person of skill in the art
`would understand that any fabricated circuit will have component values that do not perfectly match
`the impedance of the transmission line or feeder to the antenna, and therefore the VSWR will always be
`greater than one.
`
`The power amplifier in the SKY58245-19 with power detection in the SDR865, as present in the exemplary
`Apple iPhone 12 Pro Max, practices the method of claim 7, wherein coupling a first amplitude control circuit
`to the input of the gain stage of the power amplifier, coupling the second amplitude control circuit and the
`second phase control circuit to the output of the gain stage of the power amplifier, and summing the corrected
`input signal and the corrected output signal occurs in parallel with a feedback loop of the gain stage of the
`power amplifier (highlighted in orange below).
`
`The method of claim 7,
`wherein coupling a first
`amplitude control circuit to
`the input of the gain stage of
`the power amplifier,
`coupling the second
`amplitude control circuit
`and the second phase
`control circuit to the output
`of the gain stage of the
`power amplifier, and
`summing the corrected input
`signal and the corrected
`output signal occurs in
`parallel with a feedback
`loop of the gain stage of the
`power amplifier.
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`43
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`
`
`A person of skill in the art would understand that a stable power amplifier has a feedback loop between its
`input and its output.
`
`See also claims 7(a) to 7(d) above.
`
`44
`
`45
`
`
`
`
`
`the below exemplary diagram from Figure 2 in Qualcomm’s U.S. Patent Application
`For example,
`Publication No. 2015/0280946 A1 showsa detection circuit wherein summing an input signal and an output
`signal occurs in parallel with a feedback loop of the gain stage of the power amplifier. A person of skill in
`the art would understand that since the power amplifier needs to be a stable power amplifier, there is a
`feedback loop from the input of the power amplifier (node 221) and the output of the power amplifier (node
`223 is coupled to the power amplifier output). A second loop connecting the same two nodes (221 and 223)
`includes an inputsignal(to the detection circuit at 257) and an outputsignal(to the detection circuit at 252),
`which are summed at 240, and which form a loop in parallel with the feedback loop of the gain stage of the
`poweramplifier. See, e.g.:
`
`
`
`
`“273
`Power
`Estimation
`
`Control
`Processor/
`Circuitry 280
`Power
`Estimation
`
`
`
`
`
`
`
`Low-IF
`Zero-lF
`
`RF Signal
`(FB RX)223
`
`45
`
`46
`
`46
`
`
`
`12
`
`The method of claim 11,
`further comprising detecting
`the summed node signal
`independently of VSWR
`variations in an output
`signal of the power
`amplifier.
`
`The power amplifier in the SKY58245-19 with power detection in the SDR865, as present in the exemplary
`Apple iPhone 12 Pro Max, practices the method of claim 11, further comprising detecting the summed node
`signal independently of VSWR variations in an output signal of the power amplifier.
`
`The voltage standing wave ratio (VSWR) relates to the degree to which the impedance of the load (an
`antenna) matches the impedance of the transmission line or feeder to the antenna. In the annotated and
`exemplary diagram of the SDR865 circuitry shown below, which comprises the detection of the summed
`node signal, there is no circuitry that attempts to monitor the VSWR, namely the degree to which the
`impedance of the antenna matches the impedance of the feeder to the antenna. As such, the method of claim
`11 further comprises detecting the summed node signal independently of VSWR variations in an output
`signal of the power amplifier. See, e.g.:
`
`46
`
`47
`
`
`
`The power amplifier in the SKY58245-19 with power detection in the SDR865, as present in the exemplary
`Apple iPhone 12 Pro Max, practices the method of claim 12, wherein coupling a first amplitude control
`circuit to an input of a gain stage of a power amplifier, coupling a second amplitude control circuit and a
`second phase control circuit to an output of the gain stage of the power amplifier, summing the corrected
`input signal and the corrected output signal to produce a summed node signal, and detecting the summed
`node signal all occur on the same integrated circuit die, which is the SDR865.
`
`See, e.g., claims 7, 11, and 12 above.
`
`The power amplifier in the SKY58245-19 with power detection in the SDR865, as present in the exemplary
`Apple iPhone 12 Pro Max, practices the method of claim 7, further comprising programming at least one of
`the first amplitude control circuit, the second amplitude control circuit, and the second phase control circuit
`in response to variations in power of an output signal of the power amplifier.
`
`13
`
`14
`
`The method of claim 12,
`wherein coupling a first
`amplitude control circuit to
`an input of a gain stage of a
`power amplifier, coupling a
`second amplitude control
`circuit and a second phase
`control circuit to an output
`of the gain stage of the
`power amplifier, summing
`the corrected input signal
`and the corrected output
`signal to produce a summed
`node signal, and detecting
`the summed node signal all
`occur on the same
`integrated circuit die.
`
`The method of claim 7,
`further comprising
`programming at least one of
`the first amplitude control
`circuit, the second
`amplitude control circuit,
`and the second phase
`control circuit in response to
`variations in power of an
`output signal of the power
`amplifier.
`
`47
`
`48
`
`
`
`
`
`the below exemplary diagram from Figure 2 in Qualcomm’s U.S. Patent Application
`For example,
`Publication No. 2015/0280946 A1 shows the programming of an amplitude control circuit (highlighted in
`bright green) in responseto variations in powerof an output signal of the power amplifier. See,e.g.:
`
`
`Baseband Chip ;
`204
`
`
`
`
`
`RF Signal
`(FB RX)
`223
`
`5° 212
`
`
`
`
`
`|
`Control
`|
`Processor /
`Circuitry 280 |
`
`Power
`Estimation
`281
`RSB, LOFT.
`oc
`Estimation
`282
`Gain
`Estimation
`283
`
`
`
`The functionality of the Digital Baseband Chip (204 in the diagram immediately above) is present in the
`SDR865.
`
`
`48
`
`49
`
`49
`
`
`
`The power amplifier in the SKY58245-19 with power detection in the SDR865, as present in the exemplary
`Apple iPhone 12 Pro Max, practices the method of claim 7, wherein the detecting the summed node signal
`includes receiving the corrected input signal and the corrected output signal at an input of a detection circuit.
`
`17
`
`The method of claim 7,
`wherein the detecting the
`summed node signal
`includes receiving the
`corrected input signal and
`the corrected output signal
`at an input of a detection
`circuit.
`
`49
`
`50
`
`
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