Case 6:21-cv-00520-ADA Document 32-16 Filed 02/23/22 Page 1 of 207
`Case 6:21-cv-00520-ADA Document 32-16 Filed 02/23/22 Page 1 of 207
`
`EXHIBIT 17
`EXHIBIT 17
`
`
`
`

`

`United States Patent (19)
`Sorrells et al.
`
`US006061551A
`Patent Number:
`11
`(45) Date of Patent:
`
`6,061,551
`May 9, 2000
`
`54 METHOD AND SYSTEM FOR DOWN-
`SNYSTING ELECTROMAGNETIC
`
`56
`56)
`
`FOREIGN PATENT DOCUMENTS
`0 035 166 A1 2/1981 European Pat. Off. .......... HO4B 1/26
`0 193899 B1 9/1986 European Pat. Off. .......... GO1S 7/52
`O 380 351A2 8/1990 E
`Pat. Off. ....... HO3H 17/04
`1990 European Pa
`f
`75 Inventors: David F. Sorrells; Michael J.
`(List continued on next page.)
`Bultman, both of Jacksonville; Robert
`OTHER PUBLICATIONS
`W. Cook, Switzerland; Richard C.
`Akers, N.P. et al., “RF sampling gates: a brief review," IEE
`t Charley p. Moses, Jr., both of
`Proceedings A, vol. 133, Part A, No. 1, Jan. 1986, pp.
`aCKSOnVille, all OT Fla.
`45-49.
`73 Assignee: Parkervision, Inc., Jacksonville, Fla.
`Faulkner, Neil D. and Mestre, Enric Vilar, "Subharmonic
`Sampling for the Measurement of Short-term Stability of
`21 Appl. No.: 09/176,022
`Microwave Oscillators.” IEEE Transactions On Instrumen
`1-1.
`tation and measurement, vol. IM-32, No. 1, Mar. 1983, pp.
`22 Filed:
`Oct. 21, 1998
`20-213
`(51) Int. Cl. ............................................... H019 11/12
`itakura, T. Effects of the sampling pulse width on the
`52 U.S. Cl. .......................... 45.5/118; 455,313; 455/323;
`frequency characteristics of a Sample-and-hold circuit,
`455/324
`58 Field of Search ..................................... 455/131, 139, IE,4.returtles and Systems, Aug.
`455/142, 182.1, 202, 205, 313, 317, 318,
`, Vol. 141, No. 4, pp. 328-330.
`323, 118, 113,324; 329/345, 347; 327/9,
`(List continued on next page.)
`91; 702/66, 70
`Primary Examiner Doris H. To
`Assistant Examiner Sam Bhattacharya
`Cited
`Ref
`Attorney, Agent, or Firm-Sterne, Kessler, Goldstein & Fox
`CS
`PL.L.C.
`U.S. PATENT DOCUMENTS
`ABSTRACT
`57
`Re. 35,494 4/1997 Nicollini ................................. 327/554
`Re. 35.829 6/1998 Sanderford, Jr.
`... 375/200
`Methods, Systems, and apparatuses for down-converting an
`2,057,613 10/1936 Gardner ...................................... 250/8
`electromagnetic (EM) signal by aliasing the EM signal are
`2,241,078 5/1941 Vreeland ................................... 179/15
`described herein. Briefly Stated, Such methods, Systems, and
`2,270,385
`1/1942 Skillman ...
`... 179/15
`apparatuses operate by receiving an EM Signal and an
`2,283,575
`5/1942 Roberts ....................................... 250/6
`aliasing Signal having an aliasing rate. The EM Signal is
`2,358,152 9/1944 Earp ..........
`179/171.5
`aliased according to the aliasing Signal to down-convert the
`2,410,350 10/1946 Labin et al. .............................. 179/15
`EM Signal. The term aliasing, as used herein, refers to both
`2.451,430 10/1948 Barone.......
`... 250/8
`down-converting an EM Signal by under-Sampling the EM
`2,462,069 2/1949 Chatterjea et al.
`... 250/17
`Signal at an aliasing rate, and down-converting an EM Signal
`2,462,181
`2/1949 Grosselfinger ............................ 250/17
`by transferring energy from the EM Signal at the aliasing
`2,472,798 6/1949 Fredendall ...........
`... 178/44
`3:2 2.3. Egyood et al. ..
`- - - - s' rate. In an embodiment, the EM Signal is down-converted to
`2 - - - 2
`f
`eterson ....................................
`f
`an intermediate frequencv (IF) Signal. In another
`C
`y
`9.
`2,802.208 8/1957 Hobbs ...........
`... 343/176
`embodiment, the EM Signal is down-converted to a demodu
`2.985,875
`5/1961 Grisdale et al.
`... 343/100
`lated baseband information Signal. In another embodiment,
`3,023,309 2/1962 Foulkes ..................................... 250/17
`3,069,679 12/1962 Sweeney et al. .
`... 343/200
`the EM signal is a frequency modulated (FM) signal, which
`3,104,393 9/1963 Vogelman ...
`... 343/200
`S down-converted to a non-FM signal, Such as a phase
`3,114,106 12/1963 McManus ................................. 325/56
`modulated (PM) signal or an amplitude modulated (AM)
`3,118,117
`1/1964 King et al. ................................ 332/22
`Signal.
`(List continued on next page.)
`
`204 Claims, 126 Drawing Sheets
`
`104
`
`CONVENTIONAL
`RECEIVER
`
`Case 6:21-cv-00520-ADA Document 32-16 Filed 02/23/22 Page 2 of 207
`
`
`
`
`
`12a
`
`122a
`
`124
`
`122n
`
`18a
`(e.g. 70MHZ)
`
`irst
`-
`112
`
`1119a
`(e.g., E.
`
`IFSTAGE.
`
`1114a
`
`
`
`111Sn
`
`OB
`(e.g., iiMHZ)
`
`Fsts.
`
`S
`11
`
`SIGNAL
`O8.
`
`O
`
`SIGNAL
`PROCESSOR
`
`0.20a
`
`

`

`6,061,551
`Page 2
`
`U.S. PATENT DOCUMENTS
`
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`
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`325/31
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`4,003,002
`1/1977 Snijders et al. ........................... 332/10
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`4.047,121 9/1977 Campbell .................................. 351/76
`4,066,841
`1/1978 Young ........
`178/66 R
`4.066,919
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`307/220 R
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`4,204,171
`5/1980 Sutphin, Jr. ............................. 328/167
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`4,245,355
`1/1981 Pascoe et al. ..
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`4,320,361
`3/1982 Kikkert ......
`332/16 R
`4,320,536 3/1982 Dietrich ..
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`4.389,579 6/1983 Stein ..........
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`... 455/327
`4,504.803 3/1985 Lee et al. ...
`332/31 R
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`
`Case 6:21-cv-00520-ADA Document 32-16 Filed 02/23/22 Page 3 of 207
`
`4,612,518 9/1986 Gans et al. ................................ 332/21
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`4,634,998
`1/1987 Crawford ...
`331/1 A
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`333/173
`4,718,113
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`... 330/10
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`307/353
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`... 375/80
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`4,893,341
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`4,894,766
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`4,896,152
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`4.902,979
`2/1990 Puckette, IV
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`. 364/825
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`
`
`
`

`

`6,061,551
`Page 3
`
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`
`
`
`Case 6:21-cv-00520-ADA Document 32-16 Filed 02/23/22 Page 4 of 207
`
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