Case 6:21-cv-00520-ADA Document 32-2 Filed 02/23/22 Page 1 of 263
`Case 6:21-cv-00520-ADA Document 32-2 Filed 02/23/22 Page 1 of 263
`
`EXHIBIT 3
`EXHIBIT 3
`
`
`
`

`

`(12) United States Patent
`Sorrells et al.
`
`(10) Patent No.:
`(45) Date of Patent:
`
`US 6,580,902 B1
`Jun. 17, 2003
`
`USOO6580902B1
`
`(54)
`
`(75)
`
`(73)
`
`(21)
`(22)
`
`(63)
`
`(51)
`(52)
`
`(58)
`
`(56)
`
`FREQUENCY TRANSLATION USING
`OPTIMIZED SWITCH STRUCTURES
`
`Inventors: David F. Sorrells, Middleburg, FL
`(US); Michael J. Bultman,
`Jacksonville, FL (US); Robert W.
`Cook, Switzerland, FL (US); Richard
`C. Looke, Jacksonville, FL (US);
`Charley D. Moses, Jr., DeBary, FL
`(US)
`Assignee: ParkerVision, Inc., Jacksonville, FL
`(US)
`Subject to any disclaimer, the term of this
`patent is extended or adjusted under 35
`U.S.C. 154(b) by 0 days.
`
`Notice:
`
`Appl. No.: 09/293,095
`Filed:
`Apr. 16, 1999
`Related U.S. Application Data
`
`Continuation-in-part of application No. 09/176,022, filed on
`Oct. 21, 1998, now Pat. No. 6,061,551.
`Int. Cl................................................... H04B 1/28
`U.S. Cl. ....................... 455/333; 455/313; 329/362;
`329/369
`Field of Search ................................. 455/313,333,
`455/323; 329/361, 362,369,358
`References Cited
`
`U.S. PATENT DOCUMENTS
`
`2,057,613 A 10/1936 Gardner ......................... 250/8
`2.241,078 A 5/1941 Vreeland ...
`179/15
`2,270,385 A
`1/1942 Skillman ...
`179/15
`2,283,575 A 5/1942 Roberts ......................... 250/6
`2,358,152 A 9/1944 Earp ............
`179/171.5
`2,410,350 A 10/1946 Labin et al. .................. 179/15
`2,451,430 A 10/1948 Barone .............
`... 250/8
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`2.472,798 A 6/1949 Fredendall ................... 178/44
`(List continued on next page.)
`
`FOREIGN PATENT DOCUMENTS
`
`DE
`DE
`DE
`EP
`
`... HO3D/3/00
`5/1986
`3541. O31 A1
`... HO4B/1/26
`3/1994
`4237 692 C1
`... HO4L/27/00
`7/1998
`19735 798 C1
`............ HO4B/1/26
`9/1981
`O O35 166 A1
`(List continued on next page.)
`OTHER PUBLICATIONS
`Aghvami, H. et al., “Land Mobile Satellites Using the
`Highly Elliptic Orbits- The UK T-SAT Mobile Payload.”
`Fourth International Conference on Satellite Systems for
`Mobile Communications and Navigation, IEE, pp. 147-153
`(Oct. 17–19, 1988).
`Akers, N.P. et al., “RF Sampling Gates: a Brief Review,”
`IEE Proceedings, IEE, vol. 133, Part A, No. 1, pp. 45-49
`(Jan. 1986).
`
`(List continued on next page.)
`Primary Examiner Vivian Chin
`ASSistant Examiner-James K Moore
`(74) Attorney, Agent, or Firm-Sterne, Kessler, Goldstein
`& Fox PLLC
`ABSTRACT
`(57)
`Methods, Systems, and apparatuses for down-converting an
`electromagnetic (EM) signal by aliasing the EM signal are
`described herein. Briefly Stated, Such methods, Systems, and
`apparatuses operate by receiving an EM Signal and an
`aliasing Signal having an aliasing rate. The EM Signal is
`aliased according to the aliasing Signal to down-convert the
`EM Signal. The term aliasing, as used herein, refers to both
`down-converting an EM Signal by under-Sampling the EM
`Signal at an aliasing rate, and down-converting an EM Signal
`by transferring energy from the EM Signal at the aliasing
`rate. In an embodiment, the EM Signal is down-converted to
`an intermediate frequency (IF) signal. In another
`embodiment, the EM Signal is down-converted to a demodu
`lated baseband information Signal. In another embodiment,
`the EM signal is a frequency modulated (FM) signal, which
`is down-converted to a non-FM signal, Such as a phase
`modulated (PM) signal or an amplitude modulated (AM)
`Signal.
`
`15 Claims, 178 Drawing Sheets
`
`2SO2
`
`260
`
`250S
`
`12608 260
`
`1262 2S14
`
`2820
`2SS 268
`
`N=0
`2-33
`TR-150ps
`F-150ps
`PW-200s
`PER-5S
`
`Case 6:21-cv-00520-ADA Document 32-2 Filed 02/23/22 Page 2 of 263
`
`
`
`
`
`is is
`;II, it
`THE HIH IH
`
`Ing=.5u
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`Ing-.5;
`
`Ing=.S.
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`Inq=.5u
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`Ing=.5u
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`da20y
`Ing.5u
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`IgE.5
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`
`

`

`US 6,580,902 B1
`Page 2
`
`U.S. PATENT DOCUMENTS
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`7
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`
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`
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`
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`
`Case 6:21-cv-00520-ADA Document 32-2 Filed 02/23/22 Page 3 of 263
`
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`2 : - / 2
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`
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`
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`
`
`
`

`

`US 6,580,902 B1
`Page 3
`
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`
`Case 6:21-cv-00520-ADA Document 32-2 Filed 02/23/22 Page 4 of 263
`
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`US 6,580,902 B1
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