SE0202989D0 - Power amplifier efficiency - Google Patents
Power amplifier efficiencyInfo
- Publication number
- SE0202989D0 SE0202989D0 SE0202989A SE0202989A SE0202989D0 SE 0202989 D0 SE0202989 D0 SE 0202989D0 SE 0202989 A SE0202989 A SE 0202989A SE 0202989 A SE0202989 A SE 0202989A SE 0202989 D0 SE0202989 D0 SE 0202989D0
- Authority
- SE
- Sweden
- Prior art keywords
- power amplifier
- impedance
- changing
- antenna element
- dependence
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/56—Modifications of input or output impedances, not otherwise provided for
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B1/00—Details
- H03B1/04—Reducing undesired oscillations, e.g. harmonics
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
-
- 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
- H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0458—Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0408—Circuits with power amplifiers
- H04B2001/045—Circuits with power amplifiers with means for improving efficiency
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transmitters (AREA)
- Amplifiers (AREA)
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0202989A SE0202989D0 (sv) | 2002-10-10 | 2002-10-10 | Power amplifier efficiency |
EP03748868A EP1550206A1 (en) | 2002-10-10 | 2003-10-10 | Power amplifier efficiency |
AU2003267923A AU2003267923A1 (en) | 2002-10-10 | 2003-10-10 | Power amplifier efficiency |
KR1020047016195A KR20050053528A (ko) | 2002-10-10 | 2003-10-10 | 파워증폭기 효율 |
PCT/SE2003/001582 WO2004034568A1 (en) | 2002-10-10 | 2003-10-10 | Power amplifier efficiency |
CNB2003801006113A CN100438329C (zh) | 2002-10-10 | 2003-10-10 | 一种提高功率放大器的效率的方法和设备 |
US10/521,990 US7292829B2 (en) | 2002-10-10 | 2003-10-10 | Power amplifier efficiency |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0202989A SE0202989D0 (sv) | 2002-10-10 | 2002-10-10 | Power amplifier efficiency |
Publications (1)
Publication Number | Publication Date |
---|---|
SE0202989D0 true SE0202989D0 (sv) | 2002-10-10 |
Family
ID=20289223
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE0202989A SE0202989D0 (sv) | 2002-10-10 | 2002-10-10 | Power amplifier efficiency |
Country Status (7)
Country | Link |
---|---|
US (1) | US7292829B2 (sv) |
EP (1) | EP1550206A1 (sv) |
KR (1) | KR20050053528A (sv) |
CN (1) | CN100438329C (sv) |
AU (1) | AU2003267923A1 (sv) |
SE (1) | SE0202989D0 (sv) |
WO (1) | WO2004034568A1 (sv) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7834813B2 (en) * | 2004-10-15 | 2010-11-16 | Skycross, Inc. | Methods and apparatuses for adaptively controlling antenna parameters to enhance efficiency and maintain antenna size compactness |
US8948713B2 (en) * | 2009-06-16 | 2015-02-03 | Broadcom Corporation | Antenna impedance/power amplifier source impedance measurement circuitry and device operation based thereon |
GB2532901B (en) * | 2009-12-08 | 2016-09-28 | Microsoft Technology Licensing Llc | Improvements relating to power amplifiers and antennas |
US9048536B2 (en) * | 2012-07-09 | 2015-06-02 | Htc Corporation | Mobile communication device and impedance matching method thereof |
CN103023441A (zh) * | 2012-12-06 | 2013-04-03 | 北京中科汉天下电子技术有限公司 | 射频功率放大器的带宽调节方法以及射频功率放大电路 |
WO2023248631A1 (ja) * | 2022-06-21 | 2023-12-28 | 株式会社村田製作所 | 高周波回路 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6061025A (en) * | 1995-12-07 | 2000-05-09 | Atlantic Aerospace Electronics Corporation | Tunable microstrip patch antenna and control system therefor |
US5994965A (en) * | 1998-04-03 | 1999-11-30 | Cbs Corporation | Silicon carbide high frequency high power amplifier |
JP2000101456A (ja) * | 1998-09-24 | 2000-04-07 | Fujitsu Ltd | 無線送信装置 |
US6678506B1 (en) * | 1999-01-13 | 2004-01-13 | Nortel Networks Limited | Extended range power detector |
JP2000295055A (ja) * | 1999-04-01 | 2000-10-20 | Matsushita Electric Ind Co Ltd | 送信機および受信機 |
US6556814B1 (en) * | 1999-07-22 | 2003-04-29 | Motorola, Inc. | Memory-based amplifier load adjust system |
US6349216B1 (en) * | 1999-07-22 | 2002-02-19 | Motorola, Inc. | Load envelope following amplifier system |
KR100358444B1 (ko) * | 1999-07-27 | 2002-10-25 | 엘지전자 주식회사 | 휴대 무선 전화기의 안테나 매칭 장치 |
US6549169B1 (en) * | 1999-10-18 | 2003-04-15 | Matsushita Electric Industrial Co., Ltd. | Antenna for mobile wireless communications and portable-type wireless apparatus using the same |
EP1156582A3 (en) * | 2000-05-16 | 2004-04-28 | Nokia Corporation | Transmitter/receiver chain impedance optimization |
JP2002064386A (ja) * | 2000-08-23 | 2002-02-28 | Sony Corp | 整合装置 |
WO2002031914A1 (en) * | 2000-10-12 | 2002-04-18 | E-Tenna Corporation | Tunable reduced weight artificial dielectric antennas |
EP1376761B1 (en) * | 2001-03-15 | 2007-11-14 | Matsushita Electric Industrial Co., Ltd. | Antenna apparatus |
EP1248362B1 (en) * | 2001-04-06 | 2009-03-04 | Telefonaktiebolaget LM Ericsson (publ) | Method and apparatus for increasing the efficiency of a transmitter |
US20020183013A1 (en) * | 2001-05-25 | 2002-12-05 | Auckland David T. | Programmable radio frequency sub-system with integrated antennas and filters and wireless communication device using same |
KR20020096008A (ko) * | 2001-06-19 | 2002-12-28 | 엘지전자 주식회사 | 안테나 정합 회로망 |
-
2002
- 2002-10-10 SE SE0202989A patent/SE0202989D0/sv unknown
-
2003
- 2003-10-10 EP EP03748868A patent/EP1550206A1/en not_active Withdrawn
- 2003-10-10 US US10/521,990 patent/US7292829B2/en not_active Expired - Lifetime
- 2003-10-10 KR KR1020047016195A patent/KR20050053528A/ko not_active Application Discontinuation
- 2003-10-10 WO PCT/SE2003/001582 patent/WO2004034568A1/en not_active Application Discontinuation
- 2003-10-10 CN CNB2003801006113A patent/CN100438329C/zh not_active Expired - Fee Related
- 2003-10-10 AU AU2003267923A patent/AU2003267923A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
US20050239423A1 (en) | 2005-10-27 |
EP1550206A1 (en) | 2005-07-06 |
CN100438329C (zh) | 2008-11-26 |
AU2003267923A1 (en) | 2004-05-04 |
US7292829B2 (en) | 2007-11-06 |
CN1692549A (zh) | 2005-11-02 |
WO2004034568A1 (en) | 2004-04-22 |
KR20050053528A (ko) | 2005-06-08 |
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