[DOCKET NO. l219T3]
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`30
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`CLAIMS
`
`I.
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`An apparatus comprising:
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`a first amplifier stage configured to receive and amplify an input radio frequency
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`(RF) signal and provide a first output RF signal to a first load circuit when the first
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`amplifier stage is enabled,
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`the input RF signal comprising transmissions sent on
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`multiple carriers at different frequencies to a wireless device; and
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`a second amplifier stage configured to receive and amplify the input RF signal
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`and provide a second output RF signal
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`to a second load circuit when the second
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`amplifier stage is enabled.
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`2.
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`The apparatus of claim 1, the first amplifier stage comprising a first gain
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`transistor coupled to a first cascode transistor, the second amplifier stage comprising a
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`second gain transistor coupled to a second cascode transistor, and the input RF signal
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`being provided to both the first and second gain transistors.
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`3.
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`The apparatus of claim 2, the first amplifier stage further comprising a
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`first inductor coupled to the first gain transistor, and the second amplifier stage further
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`comprising a second inductor coupled to the second gain transistor.
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`4.
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`The apparatus of claim 2, the first and second gain transistors having
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`sources coupled to circuit ground.
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`5.
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`The apparatus of claim 2, the first and second amplifier stages providing
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`the first and second output RF signals in a first mode and providing the first output RF
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`signal but not the second output RF signal
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`in a second mode, the first and second
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`cascode transistors being enabled in the first mode, and only one of the first and second
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`cascode transistors being enabled in the second mode.
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`6.
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`The apparatus of claim 5,
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`the first and second gain transistors being
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`applied the input RF signal in both the first mode and the second mode, and one of the
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`first and second gain transistors operating in a saturation region and the other one of the
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`first and second gain transistors operating in a linear region in the second mode.
`(cid:42)(cid:49)(cid:51)(cid:19)(cid:17)(cid:18)(cid:26)(cid:14)(cid:17)(cid:17)(cid:18)(cid:19)(cid:25)(cid:1)
`IPR2019-00128
`(cid:50)(cid:86)(cid:66)(cid:77)(cid:68)(cid:80)(cid:78)(cid:78)(cid:1)(cid:19)(cid:17)(cid:17)(cid:23)(cid:13)(cid:1)(cid:81)(cid:15)(cid:18)
`Qualcomm 2006, p.1
`
`

`

`[DOCKET NO. l219T3]
`
`31
`
`7".
`
`The apparatus of claim 1, further comprising:
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`a feedback circuit coupled between an output and an input of at least one of the
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`first and second amplifier stages.
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`8.
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`The apparatus of claim 7, the feedback circuit comprising a resistor, or a
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`capacitor, or both a resistor and a capacitor.
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`9.
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`The apparatus of claim 1, further comprising:
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`a first attenuation circuit coupled to the first amplifier stage and configured to
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`receive the input RF signal; and
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`a second attenuation circuit coupled to the second amplifier stage and configured
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`to receive the input RF signal.
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`10.
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`The apparatus of claim 1, further comprising:
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`an attenuation circuit coupled to the first and second amplifier stages and
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`configured to receive the input RF signal.
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`11.
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`The apparatus of claim 1, firrther comprising:
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`an input matching circuit coupled to the first and second amplifier stages and
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`configured to receive a receiver input signal and provide the input RF signal.
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`12.
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`The apparatus of claim 11, the input matching circuit being tunable and
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`comprising at least one adjustable circuit component.
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`13.
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`The apparatus of claim 1, further comprising:
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`a third amplifier stage configured to receive and amplify a second input RF
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`signal and provide the first output RF signal to the first load circuit when the third
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`amplifier stage is enabled; and
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`a founh amplifier stage configured to receive and amplify the second input RF
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`signal and pr0vide the second output RF signal to the second load circuit when the
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`fourth amplifier stage is enabled.
`
`(cid:42)(cid:49)(cid:51)(cid:19)(cid:17)(cid:18)(cid:26)(cid:14)(cid:17)(cid:17)(cid:18)(cid:19)(cid:25)(cid:1)
`IPR2019-00128
`(cid:50)(cid:86)(cid:66)(cid:77)(cid:68)(cid:80)(cid:78)(cid:78)(cid:1)(cid:19)(cid:17)(cid:17)(cid:23)(cid:13)(cid:1)(cid:81)(cid:15)(cid:19)
`Qualcomm 2006, p.2
`
`

`

`[DOCKET NO. l219T3]
`
`32
`
`14.
`
`The apparatus of claim 1,
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`the first amplifier stage configured to receive and amplify the input RF signal or
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`a second input RF signal and pr0vide the first output RF signal to the first load circuit
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`when the first amplifier stage is enabled, and
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`the second amplifier stage configured to receive and amplify the input RF signal
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`or the second input RF signal and provide the second output RF signal to the second
`
`load circuit when the second amplifier stage is enabled.
`
`[5.
`
`The apparatus of claim 2, the first amplifier stage further comprising a
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`third gain transistor coupled to a third cascode transistor, the second amplifier stage
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`further comprising a fourth gain transistor coupled to a fourth cascode transistor, and a
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`second input RF signal being provided to both the third and fourth gain transistors.
`
`16.
`
`The apparatus of claim 14, further comprising:
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`a third amplifier stage configured to receive and amplify a third input RF signal
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`or a fourth input RF signal and provide the first output RF signal to the first load circuit
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`when the third amplifier stage is enabled; and
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`a fourth amplifier stage configured to receive and amplify the third input RF
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`signal or the fourth input RF signal and provide the second output RF signal to the
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`second load circuit when the f0urth amplifier stage is enabled.
`
`1?.
`
`A method comprising:
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`amplifying a first input radio frequency (RF) signal with a first amplifier stage to
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`obtain a first output RF signal when the first amplifier stage is enabled, the first input
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`RF signal comprising transmissions sent on multiple can'iers at different frequencies to
`
`a wireless device; and
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`amplifying the first input RF signal or a second input RF signal with a second
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`amplifier stage to obtain a second output RF signal when the second amplifier stage is
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`enabled.
`
`[8.
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`The method of claim 17, further comprising:
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`enabling the first and second amplifier stages in a first mode to obtain the first
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`and second output RF signals; and
`
`(cid:42)(cid:49)(cid:51)(cid:19)(cid:17)(cid:18)(cid:26)(cid:14)(cid:17)(cid:17)(cid:18)(cid:19)(cid:25)(cid:1)
`IPR2019-00128
`(cid:50)(cid:86)(cid:66)(cid:77)(cid:68)(cid:80)(cid:78)(cid:78)(cid:1)(cid:19)(cid:17)(cid:17)(cid:23)(cid:13)(cid:1)(cid:81)(cid:15)(cid:20)
`Qualcomm 2006, p.3
`
`

`

`[DOCKET NO. I21 973]
`
`33
`
`enabling the first amplifier stage and disabling the second amplifier stage in a
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`second mode to obtain the first output RF signal but not the second output RF signal.
`
`19.
`
`An apparatus comprising:
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`first means for amplifying configured to amplify a first input radio frequency
`
`(RF) signal and provide a first output RF signal when the first means for amplifying is
`
`enabled, the first input RF signal comprising transmissions sent on multiple carriers at
`
`different frequencies to a wireless device; and
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`second means for amplifying configured to amplify the first input RF signal or a
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`second input RF signal and provide a second output RF signal when the second means
`
`for amplifying is enabled.
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`20.
`
`The apparatus of claim 19, further comprising:
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`means for enabling the first and second means for amplifying in a first mode to
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`obtain the first and second output RF signals; and
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`means for enabling the first means for amplifying and disabling the second
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`means for amplifying in a second mode to obtain the first output RF signal but not the
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`second output RF signal.
`
`(cid:42)(cid:49)(cid:51)(cid:19)(cid:17)(cid:18)(cid:26)(cid:14)(cid:17)(cid:17)(cid:18)(cid:19)(cid:25)(cid:1)
`IPR2019-00128
`(cid:50)(cid:86)(cid:66)(cid:77)(cid:68)(cid:80)(cid:78)(cid:78)(cid:1)(cid:19)(cid:17)(cid:17)(cid:23)(cid:13)(cid:1)(cid:81)(cid:15)(cid:21)
`Qualcomm 2006, p.4
`
`