MX9702579A - Amplificador de energia de transmisor de am-fm que utiliza la clase-bc. - Google Patents

Amplificador de energia de transmisor de am-fm que utiliza la clase-bc.

Info

Publication number
MX9702579A
MX9702579A MX9702579A MX9702579A MX9702579A MX 9702579 A MX9702579 A MX 9702579A MX 9702579 A MX9702579 A MX 9702579A MX 9702579 A MX9702579 A MX 9702579A MX 9702579 A MX9702579 A MX 9702579A
Authority
MX
Mexico
Prior art keywords
amplifiers
load
amplifier
power
different
Prior art date
Application number
MX9702579A
Other languages
English (en)
Inventor
Paul W Dent
Original Assignee
Ericsson 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
Application filed by Ericsson Inc filed Critical Ericsson Inc
Publication of MX9702579A publication Critical patent/MX9702579A/es

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/60—Amplifiers in which coupling networks have distributed constants, e.g. with waveguide resonators
    • H03F3/602—Combinations of several amplifiers
    • 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
    • H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
    • H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
    • H03F1/0244—Stepped control
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/516—Some amplifier stages of an amplifier use supply voltages of different value
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/541—Transformer coupled at the output of an amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/30—Indexing scheme relating to single-ended push-pull [SEPP]; Phase-splitters therefor
    • H03F2203/30048—Indexing scheme relating to single-ended push-pull [SEPP]; Phase-splitters therefor the SEPP amplifier has multiple SEPP outputs from paralleled output stages coupled in one or more outputs

Abstract

Un circuito amplificador de energía para generar eficientemente una señal de salida hacia una carga a más de un nivel de energía alternativo tiene cuando menos dos amplificadores, cada uno teniendo eficiencia optima a diferentes niveles de salida de energía. El circuito amplificador de energía puede operarse en diversos modos, incluyendo activar un amplificador durante un ciclo completo de una señal de entrada que se va a amplificar, o alternativamente activar un amplificador basado en una señal de control que es independiente de la señal de salida amplificada. En cualquier caso, los amplificadores restantes están desactivados. El acoplamiento entre los amplificadores impede que los amplificadores desactivados impidan el flujo de energía desde el amplificador activado a la carga. En otro aspecto de la invencion, la eficiencia optima a diferentes niveles de salida de energía se logra por medio de acoplamiento de cada amplificador a una fuente de energía comun y a la carga a través de un circuito de coincidencia de impedancia, la transformacion de impedancia siendo diferente para amplificadores diferentes. El circuito de coincidencia de impedancia puede comprender un transformador de contrafase que tiene derivaciones para proporcionar diferentes relaciones de vueltas entre los amplificadores respectivos y la carga. Alternativamente, el circuito de coincidencia puede comprender un numero de líneas de cuarto de longitud de onda cada una acoplada a un extremo a la carga y en el otro extremo a los amplificadores a través de un transformador equilibrado-desequilibrado.
MX9702579A 1994-10-12 1995-10-10 Amplificador de energia de transmisor de am-fm que utiliza la clase-bc. MX9702579A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/321,446 US5570062A (en) 1994-10-12 1994-10-12 AM-FM transmitter power amplifier using class-BC
PCT/US1995/012485 WO1996012342A1 (en) 1994-10-12 1995-10-10 Am-fm transmitter power amplifier using class-bc

Publications (1)

Publication Number Publication Date
MX9702579A true MX9702579A (es) 1997-07-31

Family

ID=23250646

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9702579A MX9702579A (es) 1994-10-12 1995-10-10 Amplificador de energia de transmisor de am-fm que utiliza la clase-bc.

Country Status (11)

Country Link
US (2) US5570062A (es)
EP (1) EP0787381B1 (es)
KR (1) KR100376081B1 (es)
CN (1) CN1063892C (es)
AU (1) AU691363B2 (es)
BR (1) BR9509325A (es)
CA (1) CA2202464C (es)
DE (1) DE69522335T2 (es)
FI (1) FI971515A (es)
MX (1) MX9702579A (es)
WO (1) WO1996012342A1 (es)

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US6472936B1 (en) * 2001-05-14 2002-10-29 National Semiconductor Corporation Low-noise gain switching circuit using tapped inductor
US6665525B2 (en) 2001-05-29 2003-12-16 Ericsson Inc. High-level modulation method and apparatus
US6545541B2 (en) 2001-05-29 2003-04-08 Ericsson Inc. Power amplifier embedded cell bias detection, methods of detecting bias in power amplifiers and systems utilizing embedded cell bias detection
US20040100376A1 (en) * 2002-11-26 2004-05-27 Kimberly-Clark Worldwide, Inc. Healthcare monitoring system
US7889787B2 (en) * 2003-08-04 2011-02-15 Supertex, Inc. Ultrasound transmit beamformer integrated circuit and method
US7129784B2 (en) * 2004-10-28 2006-10-31 Broadcom Corporation Multilevel power amplifier architecture using multi-tap transformer
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US7728661B2 (en) * 2008-05-05 2010-06-01 Javelin Semiconductor, Inc. Controlling power with an output network
US7768350B2 (en) * 2008-12-30 2010-08-03 Javelin Semiconductor, Inc. Output gain stage for a power amplifier
EP2226932B1 (en) 2009-03-02 2013-10-16 Alcatel Lucent Method for amplifying a signal by a power amplifier, power amplifier system, device, computer program product, and digital storage medium thereof
TWI458174B (zh) 2009-05-19 2014-10-21 Marvell World Trade Ltd 結合信號功率之電路及方法
US8786381B2 (en) 2010-06-28 2014-07-22 Avago Technologies General Ip (Singapore) Pte. Ltd. Transformer structures for a power amplifier (PA)
JP5989578B2 (ja) * 2013-03-14 2016-09-07 株式会社東芝 高周波広帯域増幅回路
JP5727561B2 (ja) * 2013-08-29 2015-06-03 住友電気工業株式会社 変圧装置
JP5695782B1 (ja) * 2013-09-12 2015-04-08 住友電気工業株式会社 変圧装置
JP6297963B2 (ja) 2014-11-05 2018-03-20 住友電気工業株式会社 変圧装置
JP6359950B2 (ja) 2014-11-05 2018-07-18 住友電気工業株式会社 変圧装置
CN104851425B (zh) * 2015-05-30 2018-11-30 宁波摩米创新工场电子科技有限公司 一种基于对称式三极管放大电路的高清语音识别系统

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Also Published As

Publication number Publication date
BR9509325A (pt) 1997-10-14
US5570062A (en) 1996-10-29
CA2202464C (en) 2005-06-28
DE69522335D1 (de) 2001-09-27
CA2202464A1 (en) 1996-04-25
EP0787381A1 (en) 1997-08-06
CN1063892C (zh) 2001-03-28
US5652546A (en) 1997-07-29
WO1996012342A1 (en) 1996-04-25
KR100376081B1 (ko) 2003-06-11
AU691363B2 (en) 1998-05-14
AU3945395A (en) 1996-05-06
FI971515A0 (fi) 1997-04-11
EP0787381B1 (en) 2001-08-22
DE69522335T2 (de) 2002-05-08
FI971515A (fi) 1997-06-09
CN1168749A (zh) 1997-12-24

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Legal Events

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FG Grant or registration
MM Annulment or lapse due to non-payment of fees