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公开(公告)号：JP6046279B2
公开(公告)日：2016-12-14
申请号：JP2015558861
申请日：2014-02-10
Applicant: クゥアルコム・インコーポレイテッド , QUALCOMM INCORPORATED
Inventor： ユーセフ、アーメド・エー. , チャン、リ−チュン
CPC classification number: H03F3/16 , H03F1/223 , H03F3/193 , H03F3/245 , H03F3/68 , H03F3/72 , H03F2200/111 , H03F2200/294 , H03F2200/372 , H03F2200/451 , H03F2200/489 , H03F2200/541 , H03G1/0052
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公开(公告)号：JP2004120306A
公开(公告)日：2004-04-15
申请号：JP2002280452
申请日：2002-09-26
Applicant: Renesas Technology Corp , 株式会社ルネサステクノロジ
Inventor： KAJIWARA HISAYOSHI , TOYODA KENJI , HIKASA KAZUHIKO , YAMAWAKI DAIZO
CPC classification number: H03G3/3042 , H03G1/0052
Abstract: PROBLEM TO BE SOLVED: To provide a variable gain amplifier with a large variable gain range, less distortion, and less noises.
SOLUTION: A gm variable differential amplifier 104 to execute the control of the gain by a bias current is used as a unit amplifier (VGA)102 constituting the variable gain amplifier 100. A large variable gain range can be obtained by connecting a plurality of stages of the gm variable differential amplifiers in series. Signals are attenuated by providing an attenuator 101 at least on the input side of the initial stage VGA1. By this, it prevents amplitude distortion from occurring in each VGA. A capacitance voltage dividing attenuator 101 which does not generate noises is used as an attenuator in order to reduce noises. A fixed gain amplifier 103 is provided at the final stage in order to obtain the desired whole gain if required in the variable gain amplifier 100. If the variable gain amplifier is used for the variable gain amplifier for controlling transmission output of a Polar loop transmitter, an excellent transmission output control function can be realized without causing large degradation of distortion characteristics and noise characteristics.
COPYRIGHT: (C)2004,JPO-
公开(公告)号：JPS5910013A
公开(公告)日：1984-01-19
申请号：JP11794182
申请日：1982-07-07
Applicant: Toshiba Corp
Inventor： GOTOU KUNIAKI
CPC classification number: H03G1/0052
Abstract: PURPOSE:To ensure an optional and independent control for each differential amplifying circuit, by providing a variable current circuit in addition to a constant current circuit to each differential amplifying circuit to control the gain of each of these amplifying circuits. CONSTITUTION:An input signal ei added with a base bias V1 is applied to a differential amplifying circuit. A constant current decided by a fixed bias V2 is supplied to diodes D1 and D2 via transistors Q1 and Q2. The signal ei is amplified by the differential amplifying circuit and undergoes a current-voltage conversion by the diodes D1 and D2 to be outputted as an output Vout by TRQ7 and TRQ8. The gain of the differential amplifying circuit can be controlled by controlling the current flowing to the D1 and D2 since the current-voltage conversions of D1 and D2 have different gains due to their current values. This current control is carried out by a variable current circuit consisting of current control transistors Q4, Q5 and Q6. This variable current circuit applies the control signal voltage to a base bias V3 or V4 to control the current.
Abstract translation: 目的：为了确保每个差分放大电路的可选和独立的控制，通过为每个差分放大电路提供恒流电路以控制每个这些放大电路的增益，提供可变电流电路。 构成：将添加有基极偏置V1的输入信号ei施加到差分放大电路。 由固定偏压V2决定的恒定电流通过晶体管Q1和Q2提供给二极管D1和D2。 信号ei由差分放大电路放大，并由二极管D1和D2进行电流 - 电压转换，以作为输出Vout由TRQ7和TRQ8输出。 通过控制流向D1和D2的电流可以控制差分放大电路的增益，因为D1和D2的电流 - 电压转换由于其电流值而具有不同的增益。 该电流控制由由电流控制晶体管Q4，Q5和Q6组成的可变电流电路来执行。 该可变电流电路将控制信号电压施加到基极偏置V3或V4以控制电流。
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Patent Agency Ranking
公开(公告)号：JP2016508702A
公开(公告)日：2016-03-22
申请号：JP2015558861
申请日：2014-02-10
Inventor： ユーセフ、アーメド・エー． , チャン、リ−チュン
CPC classification number: H03F3/16 , H03F1/223 , H03F3/193 , H03F3/245 , H03F3/68 , H03F3/72 , H03F2200/111 , H03F2200/294 , H03F2200/372 , H03F2200/451 , H03F2200/489 , H03F2200/541 , H03G1/0052
Abstract: 構成可能ソースディジェネレーションインダクタンスをもち、良好な性能を有する、多出力増幅器が開示される。例示的な設計では、装置(たとえば、ワイヤレスデバイスまたは集積回路)が、増幅器のための利得トランジスタと構成可能ディジェネレーションインダクタとを含む。利得トランジスタは、入力信号を受信し、増幅された信号を与える。増幅器は、第1の動作モードで単一の出力信号を与えるかまたは第2の動作モードで複数の出力信号を与える。構成可能ディジェネレーションインダクタは、利得トランジスタに結合され、第1の動作モードで第1のソースディジェネレーションインダクタンスを与えるかまたは第2の動作モードで第2のソースディジェネレーションインダクタンスを与える。第2のソースディジェネレーションインダクタンスは、第1のソースディジェネレーションインダクタンスよりも小さく、第2の動作モードで生成される出力信号の数に依存し得る。
Abstract translation: 有一个可配置源退化电感，它具有良好的性能，多输出放大器被披露。 在示范性设计中，一种设备（例如，无线设备或集成电路），和用于所述放大器的增益晶体管和可配置的退化电感器。 增益晶体管接收输入信号并提供放大的信号。 放大器提供的多个输出信号的任一提供在所述第一操作模式或第二操作模式的单个输出信号。 可配置的退化电感器被耦合到所述增益晶体管，在第一操作模式提供第一源极退化电感提供第二源极退化电感操作的任一者或第二模式。 第二源极退化电感小于所述第一源极退化电感可以取决于在第二操作模式中产生的输出信号的数量。
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公开(公告)号：JP2009164908A
公开(公告)日：2009-07-23
申请号：JP2008000722
申请日：2008-01-07
Applicant: Mitsubishi Electric Corp , 三菱電機株式会社
Inventor： YAMAMOTO KAZUYA , MIYASHITA MIYO
CPC classification number: H03F3/191 , H03G1/0052
Abstract: PROBLEM TO BE SOLVED: To obtain a power amplifier capable of increasing flexibility in design by reducing a bottom operational voltage and reducing input/output impedance mismatches in an attenuation mode. SOLUTION: An amplifying transistor Tr for amplifying an RF signal is provided between an input terminal and an output terminal. A cathode of a diode Da1 is connected to the input terminal, and an anode of a diode Da2 is connected to the output terminal. A matching and attenuating circuit MA is connected between an anode of the diode Da1 and a cathode of the diode Da2. The matching and attenuating circuit MA reduces impedance mismatches between an input terminal side and an output terminal side and attenuates the RF signal. During an amplification mode, a bias circuit B2 supplies a bias current to the amplifying transistor Tr and a current mirror circuit CM turns off the diodes Da1, Da2. During an attenuation mode, the bias circuit B2 does not supply the bias current to the amplifying transistor Tr and the current mirror circuit CM turns on the diodes Da1, Da2. COPYRIGHT: (C)2009,JPO&INPIT
Abstract translation: 要解决的问题：为了获得能够通过降低底部操作电压并降低衰减模式中的输入/输出阻抗失配来提高设计灵活性的功率放大器。 解决方案：在输入端子和输出端子之间设置用于放大RF信号的放大晶体管Tr。 二极管Da1的阴极连接到输入端子，二极管Da2的阳极连接到输出端子。 匹配和衰减电路MA连接在二极管Da1的阳极和二极管Da2的阴极之间。 匹配和衰减电路MA减少输入端侧和输出端侧之间的阻抗失配，并且衰减RF信号。 在放大模式期间，偏置电路B2向放大晶体管Tr提供偏置电流，电流镜电路CM关断二极管Da1，Da2。 在衰减模式期间，偏置电路B2不向放大晶体管Tr提供偏置电流，并且电流镜电路CM导通二极管Da1，Da2。 版权所有（C）2009，JPO＆INPIT
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公开(公告)号：JPWO2006106816A1
公开(公告)日：2008-09-11
申请号：JP2007512845
申请日：2006-03-30
Applicant: パイオニア株式会社
CPC classification number: H03H7/253 , H03G1/0052
Abstract: アンテナ1に誘起された高周波信号は、減衰率制御信号AGCの大きさにより定まる整流器素子D1のインピーダンスに応じて減衰される。一方、送電線妨害等の低周波妨害が発生し、アンテナ1で誘起された信号の振幅が低周波で大きく変動する場合には、抵抗R11及びダイオードD1で構成される回路、又は、抵抗R11、ダイオードD2及び抵抗R12で構成される回路によって、低周波妨害に由来する低周波信号の電圧がクランプされる。この結果、後段信号処理回路2への入力信号のレベルが適正化される。
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公开(公告)号：JPS59154810A
公开(公告)日：1984-09-03
申请号：JP2881183
申请日：1983-02-23
Applicant: Nec Corp
Inventor： SEKIGUCHI MITSUO
CPC classification number: H03G1/0023 , H03G1/0052
Abstract: PURPOSE:To improve noise characteristic of a gain control circuit by connecting a variable element to an emitter of a transistor (TR) having an amplification function so as to control the amplitude while amplifying the signal. CONSTITUTION:A resistance value of a diode 4 connected to the emitter of TRs 2, 3 is changed by a voltage applied to a bias voltage terminal 11 and a cur rent feedback amount is changed so that the gain between an input terminal 10 and an output terminal 12 is controlled. Further, since the impedance of the diode 4 is changed continuously against the continuous change of a voltage applied to the terminal 11, the gain between the input terminal 10 and the output terminal 12 is controlled continuously. Thus, since the amplitude is controlled while amplifying the signal, excellent noise characteristic is attained.
Abstract translation: 目的：通过将可变元件连接到具有放大功能的晶体管（TR）的发射极来改善增益控制电路的噪声特性，从而在放大信号的同时控制幅度。 构成：连接到TRs2,3的发射极的二极管4的电阻值被施加到偏置电压端子11的电压改变，并且电流反馈量被改变，使得输入端子10和输出端 端子12被控制。 此外，由于二极管4的阻抗随着施加到端子11的电压的连续变化而连续变化，所以输入端子10和输出端子12之间的增益被连续地控制。 因此，由于在放大信号的同时控制振幅，因此获得了极好的噪声特性。
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公开(公告)号：JPS5947817A
公开(公告)日：1984-03-17
申请号：JP11174783
申请日：1983-06-21
Applicant: Texas Instruments Deutschland
Inventor： RASUZURO GOOTSU , HERUMAN KOWATSUTSUSHIYU
CPC classification number: H03G1/0052 , H03G1/0023
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