USO0606UG1SS1A
`6,061,551
`(1) Patent Number:
`United States Patent 1
`
`
`Sorrells et al. May9, 2000 [45] Date of Patent:
`
`
`
`[75]
`:
`
`[54] METHOD AND SYSTEM FOR DOWN-
`ane EEROAGNEEE
`1
`;
`David F. Sorrells: Michael J
`:
`nventors:
`f
`s;
`Mic
`Bultman,both of Jacksonville; Robert
`W. Cook, Switzerland; Richard C.
`:
`nee eae eee Jr, both of
`haereace la
`[73] Assignee: Parkervision, Inc., Jacksonville, Fla.
`
`FOREIGN PATENT DOCUMENTS
`0035 166 Al
`2/1981
`European Pat. Off.
`.......... HO4B 1/26
`0193899 B1
`9/1986
`European Pat. Off... GOLS 7/52
`0380351 A2
`8/1990
`European Pat. Off.
`....... HO3H 17/04
`.
`:
`(List continued on next page.)
`OTHER PUBLICATIONS
`Akers, N.P. et al., “RF sampling gates: a brief review,” JEE
`Proceedings—A, vol. 133, Part A, No. 1, Jan. 1986, pp.
`45-49.
`:
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`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,” JEEE Transactions on Instrumen-
`ac
`a
`tation and measurement, vol. IM—32, No. 1, Mar. 1983, pp.
`[22]
`Filed:
`Oct, 21, 1998
`
`SAYMAEMO?cscsistcsssrsrcmansencssiassats HO1Q 112-208-213.
`
`455/118; 455/313; 455/323:
`[52]
`Itakura, T., “Effects of the sampling pulse width on the
`
`; 455/324
`frequency characteristics of a sample—and-hold circuit,”
`[58] Field of Search
`45531, 139
`IEE Proceedings—Circuits, Devices and Systems, Aug.
`455/142, 182.1, 202, 205, 313, 317,318,
`19% vol. 141, No. 4, pp. 328-336.
`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
`Attorney, Agent, or Firm—Steme, Kessler, Goldstein & Fox
`PL.L.C.
`
`
`=56
`[56]
`
`
`
`*References Cited
`ee
`U.S. PATENT DOCUMENTS
`
`[57]
`
`ABSTRACT
`Re. 35,494
`.....cccccccceeeereresesesens 327/554
`4/1997 Nicollimi
`
`.
`.
`Re. 35,829
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`Methods,systems, and apparatuses for down-converting an
`2,057,613
`.o.scscscsssesssesssssesseeesseeeene 250/8
`10/1936 Gardner
`electromagnetic (EM) signal by aliasing the EM signal are
`2,241,078
`S/1941 Wreeland c.sssssssseesesssssesseseesersees 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
`wee 2900/6
`5/1942 Roberts .
`
`aliasing signal having an aliasing rate. The EM signal
`ts
`2,358,152
`9/1944 Earp we
`. L775
`aliased according to the aliasing signal to down-convert the
`2,410,350
`....eccceceseeesseaeeee 179/15
`10/1946 Labin et ab.
`EM signal. The term aliasing, as used herein, refers to both
`2,451,430
`10/1948 Barone | weaseebreaiTiaiiaiidisaannnenETTee 250/8
`down-converting an EM signal by under-sampling the EM
`2,462,069
`» 250/17
`2/1949 Chatterjeaet al.
`
`
`
`2462181 BADD|GrpeseAger » 250/17 signal at an aliasing rate, and down-converting an EMsignal
`
`
`oA 6/1949 Fredendall sss
`= 178/44
`by transferring energy from the EM signal atthe aliasing
`
`Fees oFaes oon eal,
`aeoe rate. In an embodiment, the EM signal is down-converted to
`eee sae dior nn
`seis
`an intermediate frequency (IF) signal.
`In another
`
`aAGriehi
`reiuieail
`2085875
`5/1961
`embodiment, the EM signal is down-converted to a demodu-
`
`:
`"250/17
`3.023309
`2/1962 Foulkes
`lated basebandinformation signal. In another embodiment,
`12/1962 Sweeneyetal..
`343/200
`3.069.679
`the EM signalis a frequency modulated (FM)signal, which
`
`....
`343/200
`3.104.393
`9/1963 Vogelman.
`is down-converted to a non-FM signal, such as a phase
`
`.. 325/56
`12/1963 McManus .
`3,114,106
`modulated (PM) signal or an amplitude modulated (AM)
`3,118,117 seeseeeesssssscssssssssssesee 332/22~—Signal.1/1964 King et ab.
`
`
`204 Claims, 126 Drawing Sheets
`(List continued on next page.)
`
`
`
`
`
`
`
`
`Intel v. ParkerVision
`IPR2020-01265
`Intel 1025
`
`ParkerVision Ex. 2007
`
`Intel Corp. v. ParkerVision, Inc.
`IPR No, 2020-01265
`
`
`
`Intel v. ParkerVision
`IPR2020-01265
`Intel 1025
`
`

`

`6,061,551
`
`Page 2
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`U.S. PATENT DOCUMENTS
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`.....
`iuaiivieataL aoe
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`1/1978 Young ......
`. LT8/o6 R
`
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`
`ParkerVision Ex. 2007
`Intel Corp. v. ParkerVision,Inc.
`IPR No, 2020-01265
`
`

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`6,061,551
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`Page 3
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