DE69600497D1 - Schaltung und Methode für Amplitudenmodulation - Google Patents
Schaltung und Methode für AmplitudenmodulationInfo
- Publication number
- DE69600497D1 DE69600497D1 DE69600497T DE69600497T DE69600497D1 DE 69600497 D1 DE69600497 D1 DE 69600497D1 DE 69600497 T DE69600497 T DE 69600497T DE 69600497 T DE69600497 T DE 69600497T DE 69600497 D1 DE69600497 D1 DE 69600497D1
- Authority
- DE
- Germany
- Prior art keywords
- circuit
- amplitude modulation
- modulation
- amplitude
- 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 - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/217—Class D power amplifiers; Switching amplifiers
- H03F3/2178—Class D power amplifiers; Switching amplifiers using more than one switch or switching amplifier in parallel or in series
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7014506A JP2885660B2 (ja) | 1995-01-31 | 1995-01-31 | 振幅変調回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69600497D1 true DE69600497D1 (de) | 1998-09-17 |
DE69600497T2 DE69600497T2 (de) | 1998-12-10 |
Family
ID=11862960
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69600497T Expired - Lifetime DE69600497T2 (de) | 1995-01-31 | 1996-01-26 | Schaltung und Methode für Amplitudenmodulation |
Country Status (4)
Country | Link |
---|---|
US (1) | US5578971A (de) |
EP (1) | EP0725478B1 (de) |
JP (1) | JP2885660B2 (de) |
DE (1) | DE69600497T2 (de) |
Families Citing this family (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6041082A (en) * | 1996-09-06 | 2000-03-21 | Nec Corporation | Digital amplitude modulation amplifier and television broadcasting machine |
US6133788A (en) * | 1998-04-02 | 2000-10-17 | Ericsson Inc. | Hybrid Chireix/Doherty amplifiers and methods |
US6311046B1 (en) | 1998-04-02 | 2001-10-30 | Ericsson Inc. | Linear amplification systems and methods using more than two constant length vectors |
US6285251B1 (en) | 1998-04-02 | 2001-09-04 | Ericsson Inc. | Amplification systems and methods using fixed and modulated power supply voltages and buck-boost control |
US6889034B1 (en) | 1998-04-02 | 2005-05-03 | Ericsson Inc. | Antenna coupling systems and methods for transmitters |
EP1068666B1 (de) * | 1998-04-02 | 2003-05-28 | Ericsson, Inc. | Chireix/doherty hybridverstärker für leistungswellenformsynthese |
US5930128A (en) * | 1998-04-02 | 1999-07-27 | Ericsson Inc. | Power waveform synthesis using bilateral devices |
FR2781100B1 (fr) * | 1998-07-10 | 2000-10-06 | Thomson Csf | Procede d'elaboration d'un signal d'emission et emetteur a cellules d'amplification pour la mise en oeuvre de ce procede |
US6201452B1 (en) | 1998-12-10 | 2001-03-13 | Ericsson Inc. | Systems and methods for converting a stream of complex numbers into a modulated radio power signal |
US6411655B1 (en) | 1998-12-18 | 2002-06-25 | Ericsson Inc. | Systems and methods for converting a stream of complex numbers into an amplitude and phase-modulated radio power signal |
US6181199B1 (en) | 1999-01-07 | 2001-01-30 | Ericsson Inc. | Power IQ modulation systems and methods |
US6377784B2 (en) | 1999-02-09 | 2002-04-23 | Tropian, Inc. | High-efficiency modulation RF amplifier |
US6172558B1 (en) * | 1999-09-02 | 2001-01-09 | Siemens Aktiengesellschaft | Switching amplifier and method for operating same |
US6606705B1 (en) | 1999-09-15 | 2003-08-12 | Intel Corporation | Method and apparatus for configuring an I/O buffer having an initialized default signaling level to operate at a sampled external circuit signaling level |
GB2359206B (en) | 2000-02-08 | 2004-06-23 | Wireless Systems Int Ltd | Amplifier arrangement |
US6624662B1 (en) | 2000-06-30 | 2003-09-23 | Intel Corporation | Buffer with compensating drive strength |
CN100505514C (zh) * | 2001-11-30 | 2009-06-24 | Nxp股份有限公司 | 包括具有用于调整调制信号的至少一个特征信号值的调整装置的电路的设备 |
US7092681B2 (en) * | 2002-07-23 | 2006-08-15 | Broadcom Corporation | High output power radio frequency integrated circuit |
WO2004034567A2 (en) * | 2002-10-08 | 2004-04-22 | M/A-Com, Inc. | Apparatus, methods and articles of manufacture for linear signal modification |
US7327803B2 (en) | 2004-10-22 | 2008-02-05 | Parkervision, Inc. | Systems and methods for vector power amplification |
US7355470B2 (en) | 2006-04-24 | 2008-04-08 | Parkervision, Inc. | Systems and methods of RF power transmission, modulation, and amplification, including embodiments for amplifier class transitioning |
US8334722B2 (en) | 2007-06-28 | 2012-12-18 | Parkervision, Inc. | Systems and methods of RF power transmission, modulation and amplification |
US7911272B2 (en) | 2007-06-19 | 2011-03-22 | Parkervision, Inc. | Systems and methods of RF power transmission, modulation, and amplification, including blended control embodiments |
US8013675B2 (en) | 2007-06-19 | 2011-09-06 | Parkervision, Inc. | Combiner-less multiple input single output (MISO) amplification with blended control |
US8031804B2 (en) | 2006-04-24 | 2011-10-04 | Parkervision, Inc. | Systems and methods of RF tower transmission, modulation, and amplification, including embodiments for compensating for waveform distortion |
US7937106B2 (en) | 2006-04-24 | 2011-05-03 | ParkerVision, Inc, | Systems and methods of RF power transmission, modulation, and amplification, including architectural embodiments of same |
WO2008144017A1 (en) | 2007-05-18 | 2008-11-27 | Parkervision, Inc. | Systems and methods of rf power transmission, modulation, and amplification |
WO2009145887A1 (en) | 2008-05-27 | 2009-12-03 | Parkervision, Inc. | Systems and methods of rf power transmission, modulation, and amplification |
US9288808B2 (en) * | 2009-08-14 | 2016-03-15 | Blackberry Limited | Method and apparatus for power sharing carrier set for carrier aggregation |
US8554158B2 (en) | 2010-09-30 | 2013-10-08 | St-Ericsson Sa | Current saving by reduced modulation code and selective gating of RF signal |
EP2695294A1 (de) | 2011-04-08 | 2014-02-12 | Parkervision, Inc. | System und verfahren zur hf-leistungsübertragung, -modulation und -verstärkung |
KR20140034895A (ko) | 2011-06-02 | 2014-03-20 | 파커비전, 인크. | 안테나 제어 |
CN104620500B (zh) * | 2012-09-14 | 2017-03-08 | 日本电气株式会社 | 发射器、信号合成电路和信号合成方法 |
CN106415435B (zh) | 2013-09-17 | 2020-08-11 | 帕克维辛股份有限公司 | 用于呈现信息承载时间函数的方法、装置和系统 |
US9344038B2 (en) * | 2014-02-07 | 2016-05-17 | Qualcomm Incorporated | Tri-phase digital polar modulator |
JP6342676B2 (ja) * | 2014-02-28 | 2018-06-13 | パナソニック株式会社 | 電力増幅装置及び制御方法 |
CN115603766A (zh) * | 2022-10-19 | 2023-01-13 | 陕西科技大学(Cn) | 基于fpga的中波发射机循环调制编码系统及方法 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3480881A (en) * | 1966-08-19 | 1969-11-25 | Westinghouse Electric Corp | Circuitry for simultaneously modulating and amplifying a carrier signal |
GB2064901B (en) * | 1979-11-30 | 1984-11-07 | Harris Corp | Digital high power amplifier |
US4745368A (en) * | 1985-09-28 | 1988-05-17 | Licentia Patent-Verwaltungs-Gmbh | Switching amplifier |
DE3822990A1 (de) * | 1988-07-07 | 1990-01-11 | Olympia Aeg | Leistungsverstaerker |
US5132637A (en) * | 1991-03-25 | 1992-07-21 | Harris Corporation | RF power amplifier system having improved distortion reduction |
JPH04321305A (ja) * | 1991-04-20 | 1992-11-11 | Nec Corp | 振幅変調送信機 |
US5111158A (en) * | 1991-06-27 | 1992-05-05 | Harris Corporation | Modulated voltage supply and fault monitoring thereof adapted for use in an RF power amplifier system |
JP2610729B2 (ja) * | 1991-08-29 | 1997-05-14 | 日本放送協会 | 振幅変調方式 |
JP2653741B2 (ja) * | 1992-06-03 | 1997-09-17 | 日本無線株式会社 | 中波ラジオ放送機 |
JP2809957B2 (ja) * | 1993-01-22 | 1998-10-15 | 株式会社東芝 | ディジタルam送信機 |
-
1995
- 1995-01-31 JP JP7014506A patent/JP2885660B2/ja not_active Expired - Fee Related
- 1995-12-26 US US08/578,236 patent/US5578971A/en not_active Expired - Lifetime
-
1996
- 1996-01-26 EP EP96300556A patent/EP0725478B1/de not_active Expired - Lifetime
- 1996-01-26 DE DE69600497T patent/DE69600497T2/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0725478B1 (de) | 1998-08-12 |
EP0725478A1 (de) | 1996-08-07 |
DE69600497T2 (de) | 1998-12-10 |
JP2885660B2 (ja) | 1999-04-26 |
US5578971A (en) | 1996-11-26 |
JPH08204456A (ja) | 1996-08-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |