JP2007243927A5 - - Google Patents

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Publication number
JP2007243927A5
JP2007243927A5 JP2007016577A JP2007016577A JP2007243927A5 JP 2007243927 A5 JP2007243927 A5 JP 2007243927A5 JP 2007016577 A JP2007016577 A JP 2007016577A JP 2007016577 A JP2007016577 A JP 2007016577A JP 2007243927 A5 JP2007243927 A5 JP 2007243927A5
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JP
Japan
Prior art keywords
circuit
digital
analog
signal
envelope
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.)
Granted
Application number
JP2007016577A
Other languages
English (en)
Japanese (ja)
Other versions
JP2007243927A (ja
JP4949049B2 (ja
Filing date
Publication date
Priority claimed from US11/368,308 external-priority patent/US7835710B2/en
Application filed filed Critical
Publication of JP2007243927A publication Critical patent/JP2007243927A/ja
Publication of JP2007243927A5 publication Critical patent/JP2007243927A5/ja
Application granted granted Critical
Publication of JP4949049B2 publication Critical patent/JP4949049B2/ja
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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JP2007016577A 2006-01-27 2007-01-26 可変パワー適応送信機 Expired - Fee Related JP4949049B2 (ja)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US76304106P 2006-01-27 2006-01-27
US60/763041 2006-01-27
US77303306P 2006-02-14 2006-02-14
US60/773033 2006-02-14
US11/368308 2006-03-03
US11/368,308 US7835710B2 (en) 2006-01-27 2006-03-03 Variable power adaptive transmitter

Publications (3)

Publication Number Publication Date
JP2007243927A JP2007243927A (ja) 2007-09-20
JP2007243927A5 true JP2007243927A5 (enExample) 2011-06-23
JP4949049B2 JP4949049B2 (ja) 2012-06-06

Family

ID=37890424

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007016577A Expired - Fee Related JP4949049B2 (ja) 2006-01-27 2007-01-26 可変パワー適応送信機

Country Status (5)

Country Link
US (1) US7835710B2 (enExample)
EP (1) EP1814221B1 (enExample)
JP (1) JP4949049B2 (enExample)
SG (1) SG134278A1 (enExample)
TW (1) TWI431989B (enExample)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4811463B2 (ja) * 2006-05-17 2011-11-09 日本電気株式会社 歪み制御装置及び方法
GB0715254D0 (en) * 2007-08-03 2007-09-12 Wolfson Ltd Amplifier circuit
JP5251698B2 (ja) * 2009-04-20 2013-07-31 富士通株式会社 増幅回路、増幅方法及び電源電圧調整方法
JPWO2011002099A1 (ja) * 2009-07-03 2012-12-13 日本電気株式会社 消費電力制御回路、増幅回路及び消費電力制御方法
EP2432120B1 (en) * 2010-01-07 2017-12-06 Panasonic Intellectual Property Management Co., Ltd. Amplifying device
CN103916729A (zh) * 2012-12-31 2014-07-09 广州励丰文化科技股份有限公司 具有多数字信号处理器的有源音箱
CN103916780A (zh) * 2012-12-31 2014-07-09 广州励丰文化科技股份有限公司 具有自动降噪功能的高保真有源一体化音箱
JP6494908B2 (ja) * 2013-01-29 2019-04-03 スナップトラック・インコーポレーテッド 高周波増幅器
EP3826235A1 (en) * 2013-08-19 2021-05-26 ARRIS Enterprises LLC Device for modulating an amplifier power supply
US9768800B1 (en) * 2016-09-13 2017-09-19 Analog Devices, Inc. Envelope dependent output stage scalability
US10686407B2 (en) 2018-04-30 2020-06-16 Samsung Electronics Co., Ltd. Symbol power tracking amplification system and a wireless communication device including the same
CN113411098B (zh) * 2021-06-08 2022-04-22 深圳市美嘉光电科技有限公司 一种无线语音传输芯片组及其应用装置
US11917378B2 (en) 2021-06-17 2024-02-27 Maxim Integrated Products, Inc. Systems and methods for controlling powerstage supply modulation via audio interface
US12095952B2 (en) * 2021-07-27 2024-09-17 Logitech Europe S.A. Method and system for operating a bi-directional audio device with an external speaker

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5420536A (en) 1993-03-16 1995-05-30 Victoria University Of Technology Linearized power amplifier
US6163706A (en) * 1997-11-18 2000-12-19 Conexant Systems, Inc. Apparatus for and method of improving efficiency of transceivers in radio products
US6043707A (en) 1999-01-07 2000-03-28 Motorola, Inc. Method and apparatus for operating a radio-frequency power amplifier as a variable-class linear amplifier
GB2370435A (en) * 2000-12-22 2002-06-26 Nokia Mobile Phones Ltd A polar loop transmitter for a mobile phone
US6982593B2 (en) 2003-10-23 2006-01-03 Northrop Grumman Corporation Switching amplifier architecture
US6714071B1 (en) 2001-06-25 2004-03-30 Nortel Networks Limited Gate modulation for high power amplifiers
US6784744B2 (en) * 2001-09-27 2004-08-31 Powerq Technologies, Inc. Amplifier circuits and methods
JP2005513943A (ja) 2001-12-24 2005-05-12 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ 電力増幅器
JP2004048271A (ja) * 2002-07-10 2004-02-12 Yaskawa Electric Corp 低損失電力増幅器
FI116870B (fi) * 2003-06-19 2006-03-15 Nokia Corp Järjestely energian säästämiseksi lähettimessä sekä radiolaite
US7026868B2 (en) * 2003-11-20 2006-04-11 Northrop Grumman Corporation Variable supply amplifier system
KR100996102B1 (ko) 2004-10-27 2010-11-22 삼성전자주식회사 고출력 증폭기의 바이어스 적응 바이어스 제어 장치 및 방법
US20060199553A1 (en) * 2005-03-07 2006-09-07 Andrew Corporation Integrated transceiver with envelope tracking
US7340228B2 (en) * 2005-07-08 2008-03-04 Samsung Electronics Co., Ltd. Apparatus and method for high efficiency RF power amplification using drain bias adaptation

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