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GB2368476B - Method and apparatus for down-converting a modulated electromagnetic signal - Google Patents

Method and apparatus for down-converting a modulated electromagnetic signal

Info

Publication number
GB2368476B
GB2368476B GB0128484A GB0128484A GB2368476B GB 2368476 B GB2368476 B GB 2368476B GB 0128484 A GB0128484 A GB 0128484A GB 0128484 A GB0128484 A GB 0128484A GB 2368476 B GB2368476 B GB 2368476B
Authority
GB
United Kingdom
Prior art keywords
converting
electromagnetic signal
modulated electromagnetic
modulated
signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
GB0128484A
Other versions
GB0128484D0 (en
GB2368476A (en
Inventor
David F Sorrels
Michael J Bultman
Robert W Cook
Richard C Looke
Jnr Charley D Moses
Gregory S Rawlins
Michael W Rawlins
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ParkerVision Inc
Original Assignee
ParkerVision Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US09/176,022 external-priority patent/US6061551A/en
Application filed by ParkerVision Inc filed Critical ParkerVision Inc
Priority claimed from GB0109536A external-priority patent/GB2358096B/en
Publication of GB0128484D0 publication Critical patent/GB0128484D0/en
Publication of GB2368476A publication Critical patent/GB2368476A/en
Application granted granted Critical
Publication of GB2368476B publication Critical patent/GB2368476B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
GB0128484A 1998-10-21 1999-10-20 Method and apparatus for down-converting a modulated electromagnetic signal Expired - Fee Related GB2368476B (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US09/176,022 US6061551A (en) 1998-10-21 1998-10-21 Method and system for down-converting electromagnetic signals
US09/293,342 US6687493B1 (en) 1998-10-21 1999-04-16 Method and circuit for down-converting a signal using a complementary FET structure for improved dynamic range
US09/293,095 US6580902B1 (en) 1998-10-21 1999-04-16 Frequency translation using optimized switch structures
GB0109536A GB2358096B (en) 1998-10-21 1999-10-20 Method and system for down-converting a modulated carrier signal

Publications (3)

Publication Number Publication Date
GB0128484D0 GB0128484D0 (en) 2002-01-23
GB2368476A GB2368476A (en) 2002-05-01
GB2368476B true GB2368476B (en) 2003-01-08

Family

ID=27447940

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0128484A Expired - Fee Related GB2368476B (en) 1998-10-21 1999-10-20 Method and apparatus for down-converting a modulated electromagnetic signal

Country Status (1)

Country Link
GB (1) GB2368476B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4888557A (en) * 1989-04-10 1989-12-19 General Electric Company Digital subharmonic sampling down-converter
WO1994005087A1 (en) * 1992-08-25 1994-03-03 Wireless Access, Inc. A direct conversion receiver for multiple protocols
WO1996002977A1 (en) * 1994-07-13 1996-02-01 Stanford Telecommunications, Inc. Method and apparatus for alias-driven frequency downconversion (mixing)
WO1996039750A1 (en) * 1995-06-06 1996-12-12 The Board Of Trustees Of The Leland Stanford Junior University Radio frequency signal reception using frequency shifting by discrete-time sub-sampling down-conversion

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4888557A (en) * 1989-04-10 1989-12-19 General Electric Company Digital subharmonic sampling down-converter
WO1994005087A1 (en) * 1992-08-25 1994-03-03 Wireless Access, Inc. A direct conversion receiver for multiple protocols
WO1996002977A1 (en) * 1994-07-13 1996-02-01 Stanford Telecommunications, Inc. Method and apparatus for alias-driven frequency downconversion (mixing)
WO1996039750A1 (en) * 1995-06-06 1996-12-12 The Board Of Trustees Of The Leland Stanford Junior University Radio frequency signal reception using frequency shifting by discrete-time sub-sampling down-conversion

Also Published As

Publication number Publication date
GB0128484D0 (en) 2002-01-23
GB2368476A (en) 2002-05-01

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20181020