WO1999043132A2 - A method and a circuit for am demodulation - Google Patents
A method and a circuit for am demodulation Download PDFInfo
- Publication number
- WO1999043132A2 WO1999043132A2 PCT/DK1999/000076 DK9900076W WO9943132A2 WO 1999043132 A2 WO1999043132 A2 WO 1999043132A2 DK 9900076 W DK9900076 W DK 9900076W WO 9943132 A2 WO9943132 A2 WO 9943132A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- signal
- input
- fed
- mixer
- tag
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
- H04L27/06—Demodulator circuits; Receiver circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radar Systems Or Details Thereof (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000532954A JP2003527754A (en) | 1998-02-23 | 1999-02-23 | Method and circuit for AM demodulation |
EP99903597A EP1050141A2 (en) | 1998-02-23 | 1999-02-23 | A method and a circuit for am demodulation |
CA002320699A CA2320699A1 (en) | 1998-02-23 | 1999-02-23 | A method and a circuit for am demodulation |
AU24121/99A AU2412199A (en) | 1998-02-23 | 1999-02-23 | A method and a circuit for am demodulation |
BR9908174-1A BR9908174A (en) | 1998-02-23 | 1999-02-23 | Method and circuit for demodulation of am |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK24798A DK24798A (en) | 1998-02-23 | 1998-02-23 | Method for simultaneous AM demodulation of data and signals generated by interaction with metal |
DK0247/98 | 1998-02-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1999043132A2 true WO1999043132A2 (en) | 1999-08-26 |
WO1999043132A3 WO1999043132A3 (en) | 1999-10-28 |
Family
ID=8091396
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DK1999/000076 WO1999043132A2 (en) | 1998-02-23 | 1999-02-23 | A method and a circuit for am demodulation |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP1050141A2 (en) |
JP (1) | JP2003527754A (en) |
CN (1) | CN1292189A (en) |
AU (1) | AU2412199A (en) |
BR (1) | BR9908174A (en) |
CA (1) | CA2320699A1 (en) |
DK (1) | DK24798A (en) |
WO (1) | WO1999043132A2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4680093B2 (en) * | 2006-02-27 | 2011-05-11 | 三菱電機株式会社 | Electronic tag system |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4147973A (en) * | 1976-12-20 | 1979-04-03 | Weber Harold J | Frequency dependent amplitude modulated translator apparatus |
SU1150596A1 (en) * | 1983-10-27 | 1985-04-15 | Всесоюзный Научно-Исследовательский Институт Геофизических Методов Разведки | Geophone device |
US5257403A (en) * | 1989-07-20 | 1993-10-26 | Scientific-Atlanta, Inc. | Method of subcarrier multiplication which preserves AM Information in FM systems |
US5418447A (en) * | 1991-02-02 | 1995-05-23 | Ch. Beha Gmbh | Process and apparatus for electromagnetically locating and identifying electrical lines using a high frequency carrier wave |
WO1998007052A1 (en) * | 1996-08-16 | 1998-02-19 | Jon Neal Weaver | Anti-shoplifting security system |
-
1998
- 1998-02-23 DK DK24798A patent/DK24798A/en not_active Application Discontinuation
-
1999
- 1999-02-23 BR BR9908174-1A patent/BR9908174A/en not_active Application Discontinuation
- 1999-02-23 EP EP99903597A patent/EP1050141A2/en not_active Withdrawn
- 1999-02-23 JP JP2000532954A patent/JP2003527754A/en not_active Withdrawn
- 1999-02-23 AU AU24121/99A patent/AU2412199A/en not_active Abandoned
- 1999-02-23 CN CN 99803259 patent/CN1292189A/en active Pending
- 1999-02-23 CA CA002320699A patent/CA2320699A1/en not_active Abandoned
- 1999-02-23 WO PCT/DK1999/000076 patent/WO1999043132A2/en not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4147973A (en) * | 1976-12-20 | 1979-04-03 | Weber Harold J | Frequency dependent amplitude modulated translator apparatus |
SU1150596A1 (en) * | 1983-10-27 | 1985-04-15 | Всесоюзный Научно-Исследовательский Институт Геофизических Методов Разведки | Geophone device |
US5257403A (en) * | 1989-07-20 | 1993-10-26 | Scientific-Atlanta, Inc. | Method of subcarrier multiplication which preserves AM Information in FM systems |
US5418447A (en) * | 1991-02-02 | 1995-05-23 | Ch. Beha Gmbh | Process and apparatus for electromagnetically locating and identifying electrical lines using a high frequency carrier wave |
WO1998007052A1 (en) * | 1996-08-16 | 1998-02-19 | Jon Neal Weaver | Anti-shoplifting security system |
Non-Patent Citations (1)
Title |
---|
DATABASE WPI Derwent Publications Ltd., London, GB; Class S03, AN 1985-262296/42 & SU 1 150 596 A (GEOPHYS PROPECTING) 15 April 1985 * |
Also Published As
Publication number | Publication date |
---|---|
BR9908174A (en) | 2000-10-31 |
AU2412199A (en) | 1999-09-06 |
WO1999043132A3 (en) | 1999-10-28 |
EP1050141A2 (en) | 2000-11-08 |
CA2320699A1 (en) | 1999-08-26 |
JP2003527754A (en) | 2003-09-16 |
DK24798A (en) | 1998-03-03 |
CN1292189A (en) | 2001-04-18 |
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