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WO2009139280A1 - Module amplificateur - Google Patents

Module amplificateur Download PDF

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Publication number
WO2009139280A1
WO2009139280A1 PCT/JP2009/058046 JP2009058046W WO2009139280A1 WO 2009139280 A1 WO2009139280 A1 WO 2009139280A1 JP 2009058046 W JP2009058046 W JP 2009058046W WO 2009139280 A1 WO2009139280 A1 WO 2009139280A1
Authority
WO
WIPO (PCT)
Prior art keywords
unbalanced
amplifier
balanced
filter
signal
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.)
Ceased
Application number
PCT/JP2009/058046
Other languages
English (en)
Japanese (ja)
Inventor
原田哲郎
藤岡孝治
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Murata Manufacturing Co Ltd
Original Assignee
Murata Manufacturing Co Ltd
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 Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Publication of WO2009139280A1 publication Critical patent/WO2009139280A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
    • 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
    • H04B1/0475—Circuits with means for limiting noise, interference or distortion
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/168—Two amplifying stages are coupled by means of a filter circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/294—Indexing scheme relating to amplifiers the amplifier being a low noise amplifier [LNA]
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/451—Indexing scheme relating to amplifiers the amplifier being a radio frequency amplifier

Definitions

  • the present invention relates to an amplifier module used for an antenna switch part of a wireless communication device such as a mobile phone terminal, and more particularly to an amplifier module that suppresses an increase in cost and suppresses an influence of noise.
  • This configuration eliminates the need for circuit elements for impedance matching, and allows the amplifier module to be configured with a small number of circuit components, thereby reducing the cost and size.
  • the filter 3 also serves as a matching circuit that performs impedance matching between the unbalanced amplifier 2 and the power amplifier 12. This eliminates the need for a circuit element for impedance matching, makes it possible to configure an amplifier module with a small number of circuit components, and to reduce the cost accordingly.
  • FIG. 3 is an enlarged cross-sectional view of the amplifier module 101 shown in FIG.
  • the balun 1 shown in FIG. 2 is configured by a conductor pattern inside an LTCC (low temperature sintered ceramic) multilayer substrate 20.
  • An unbalanced amplifier 2 and a filter 3 are mounted on the upper surface of the multilayer substrate 20, and the periphery thereof is molded with a mold resin 10.
  • the multilayer substrate 20 can also be comprised with resin, such as a liquid crystal polymer and a polyimide, besides a ceramic.
  • a small and low-cost amplifier module can be configured by configuring a multilayer substrate in this way.
  • the filter 4 inputs a transmission signal output from the RFIC 11 in a balanced type and outputs it in an unbalanced type.
  • the filter 4 is a SAW filter in which one excitation electrode is configured as an unbalanced type and the other excitation electrode is configured as a balanced type.
  • the unbalanced amplifier 2 inputs the output signal of the filter 4 as an unbalanced signal, amplifies it with a predetermined gain, and outputs it in an unbalanced type.
  • the balanced / unbalanced converter 5 receives the unbalanced signal output from the unbalanced amplifier 2, performs balanced conversion, and outputs it to the power amplifier 12.
  • FIG. 5 is a block diagram of a mobile phone terminal according to the third embodiment.
  • This mobile phone terminal includes a transmission / reception IC 31, an amplifier module 103, and a power amplifier 33.
  • BPF is a band-pass filter
  • LNA low noise amplifier
  • TCXO is a reference oscillator
  • APC-IC is an amplifier control IC.
  • the 1800/1900 MHz transmission signal is output to the front end module FEM via the balanced input / unbalanced output amplifier 32 and the unbalanced input / output power amplifier 34.
  • a coupler between the power amplifiers 33 and 34 and the FEM is provided for the amplifier control IC (APC-IC) to detect the transmission level.
  • APC-IC amplifier control IC

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transceivers (AREA)

Abstract

La présente invention concerne un module amplificateur qui supprime un bruit produit dans un dispositif dans lequel le module amplificateur est incorporé ou l’influence d’un bruit reçu de l’extérieur et qui supprime une augmentation de coût. Un module amplificateur (101) comporte un convertisseur de charge équilibrée/déséquilibrée (1), un amplificateur déséquilibré (2), et un filtre (3). Le convertisseur de charge équilibrée/déséquilibrée (1) émet en entrée un signal de transmission émis depuis un circuit intégré radiofréquence (11) en régime équilibré, applique la conversion de charge déséquilibrée au signal d’entrée, et émet en sortie le signal converti en régime déséquilibré. L’amplificateur déséquilibré (2) émet en entrée le signal déséquilibré, amplifie le signal déséquilibré avec un gain prédéterminé, et émet en sortie le signal amplifié en régime déséquilibré. Un filtre (3) émet en entrée le signal émis en sortie en régime déséquilibré et émet en sortie le signal d’entrée vers un amplificateur de puissance (12) en régime équilibré. Le filtre (3) est, par exemple, un filtre à ondes acoustiques de surface dans lequel une électrode d’excitation est configurée en régime déséquilibré et l’autre électrode d’excitation est configurée en régime équilibré.
PCT/JP2009/058046 2008-05-13 2009-04-23 Module amplificateur Ceased WO2009139280A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008-125516 2008-05-13
JP2008125516 2008-05-13

Publications (1)

Publication Number Publication Date
WO2009139280A1 true WO2009139280A1 (fr) 2009-11-19

Family

ID=41318652

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2009/058046 Ceased WO2009139280A1 (fr) 2008-05-13 2009-04-23 Module amplificateur

Country Status (1)

Country Link
WO (1) WO2009139280A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6313428A (ja) * 1986-07-03 1988-01-20 Nec Corp 線路不平衡補正回路
JPH06204781A (ja) * 1993-01-05 1994-07-22 Murata Mfg Co Ltd 多電極形弾性表面波装置
JP2000022404A (ja) * 1998-07-07 2000-01-21 Ngk Insulators Ltd 積層型誘電体フィルタ及び高周波回路基板
JP2001339038A (ja) * 2000-05-30 2001-12-07 Alps Electric Co Ltd 電子回路ユニット
JP2005020677A (ja) * 2003-06-30 2005-01-20 Kojima Press Co Ltd ２周波共用アンテナ
JP2005072031A (ja) * 2003-08-22 2005-03-17 Renesas Technology Corp 高周波用半導体装置および通信用電子部品並びに無線通信システム
JP2006295282A (ja) * 2005-04-06 2006-10-26 Hitachi Metals Ltd 高周波回路装置および高周波モジュール

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6313428A (ja) * 1986-07-03 1988-01-20 Nec Corp 線路不平衡補正回路
JPH06204781A (ja) * 1993-01-05 1994-07-22 Murata Mfg Co Ltd 多電極形弾性表面波装置
JP2000022404A (ja) * 1998-07-07 2000-01-21 Ngk Insulators Ltd 積層型誘電体フィルタ及び高周波回路基板
JP2001339038A (ja) * 2000-05-30 2001-12-07 Alps Electric Co Ltd 電子回路ユニット
JP2005020677A (ja) * 2003-06-30 2005-01-20 Kojima Press Co Ltd ２周波共用アンテナ
JP2005072031A (ja) * 2003-08-22 2005-03-17 Renesas Technology Corp 高周波用半導体装置および通信用電子部品並びに無線通信システム
JP2006295282A (ja) * 2005-04-06 2006-10-26 Hitachi Metals Ltd 高周波回路装置および高周波モジュール

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