| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 121 | Amplifier | JP2008241500 | 2008-09-19 | JP2008306771A | 2008-12-18 | SHIIKUMA KAZUMI |
| PROBLEM TO BE SOLVED: To provide an amplifier which achieves miniaturization of a device, reduction in transmission losses, and improvement of an efficiency. SOLUTION: An amplifier comprises: a carrier amplifier 21 that performs signal amplification at all times; a peak amplifier 22 that operates only at a time when the high electric power is output; a combiner 23 which combines the output from the carrier amplifier 21 and the peak amplifier 22; and a distributor 24 which distributes an input signal to the carrier amplifier 21 and the peak amplifier 22. The carrier amplifier 21 and the peak amplifier 22 are included in a single package 1 (a single package transistor). The distributor 24 and the combiner 23 are disposed outside the package 1. COPYRIGHT: (C)2009,JPO&INPIT | ||||||
| 122 | High frequency circuit, semiconductor device, and high frequency power amplifier | JP2007130404 | 2007-05-16 | JP2008288769A | 2008-11-27 | TATSUOKA KAZUKI; INAMORI MASAHIKO; MATSUDA SHINGO; OHASHI KAZUHIKO; KOIZUMI HARUHIKO |
| <P>PROBLEM TO BE SOLVED: To provide a multi-functional, compact and high-performance high frequency circuit reducing the loss of a switch formed on the output side of a final amplification part and compatible with multiple bands and multiple modes. <P>SOLUTION: In the high frequency circuit, the final amplification part 100 power-amplifies input signals and outputs amplified signals. A first matching circuit inputs the amplified signals with a first input impedance, also executes impedance conversion, and outputs first impedance conversion signals with a first output impedance. A control part 170A generates control signals indicating path selection information. A switch part 101A selects one of at least two paths on the basis of the control signals, makes the first impedance conversion signals pass through the selected path with an ON impedance, and outputs passing signals. A second matching circuit inputs the passing signals with a second input impedance, also executes the impedance conversion, and outputs second impedance conversion signals to an antenna with a second output impedance. <P>COPYRIGHT: (C)2009,JPO&INPIT | ||||||
| 123 | Power amplifier using power coupler | JP2007294217 | 2007-11-13 | JP2008131645A | 2008-06-05 | HONG SONG-CHEOL; PARK CHANGKUN |
| <P>PROBLEM TO BE SOLVED: To provide a power amplifier that uses a power coupler with a minimized power loss and the enhanced efficiency of the power amplifier power with a large power output. <P>SOLUTION: By coupling electric power generated from a large number of power amplifiers used in a wireless communications system, by using a transmission line transformer, an advantage that not only the minimization of the power loss, but also the enhancement of the efficiency of the power amplifier by using the large power output can be obtained. <P>COPYRIGHT: (C)2008,JPO&INPIT | ||||||
| 124 | Traveling-wave amplifier | JP2007509036 | 2005-04-19 | JP2007534257A | 2007-11-22 | オーヴレイ，フランシス |
| A travelling wave amplifier has two inductive transmission lines (12,14) with a plurality of amplifier devices (10) connected between them. At least one of the transmission lines (14) further comprises a plurality of delay elements (50), each delay element being provided in series between a respective pair of inductive elements. The delay elements enable the pulse propagation speeds in the two transmission lines to be matched while leaving freedom in the selection of impedance values to provide input and output impedance matching of the amplifier. In this way, even when the individual amplifier devices (10) have unequal input and output impedances, the amplifier can be configured to provide matched input and output impedances as well as matched propagation speeds. | ||||||
| 125 | Space radiation high-power amplifier having reflector formed into prescribed shape | JP2006253144 | 2006-09-19 | JP2007089391A | 2007-04-05 | BROWN KENNETH W |
| <P>PROBLEM TO BE SOLVED: To enable a space radiation high-power amplifier to have a reflector with at least one shape for reflecting a first wavefront and an active array amplifier for amplifying a reflection wavefront for generating a high-power plane wavefront. <P>SOLUTION: The reflector gives substantially uniform amplitude to the refection wavefront 107, when entering the active array amplifier 108. The first wavefront 103 is a substantially spherical wavefront, the reflector having a shape corrects each amplitude taper of the first wavefront 103, and a substantially uniform amplitude component is given to the reflection wavefront 107, when the wave enters the active array amplifier 108. In some embodiments, illuminance is contoured so as to fit to the shape of the active array amplifier for minimizing leakage in the reflector having a shape. <P>COPYRIGHT: (C)2007,JPO&INPIT | ||||||
| 126 | Power amplifier and transmitter employing the same | JP2005195822 | 2005-07-05 | JP2007019578A | 2007-01-25 | OKA IREI; KOYA SHIGEKI; TANAKA SATOSHI |
| PROBLEM TO BE SOLVED: To make an electric length of an output power synthesizing circuit of a Doherty type amplifier variable, and to attain high power adding efficiency for a multi-band or broad band. SOLUTION: A 90-degree phase delay power distributing part PSPD is connected to an input side of a carrier amplifier Amp1 and a peak amplifier Amp2, and a variable electric length power synthesizing part VTL2 is connected to an output side thereof. A control signal Sig is applied through a control terminal Ctrl of the variable electric length power synthesizing part VTL2, and adjustment is performed in correspondence to a carrier frequency band of a carrier signal RFs so that an electric length of the variable electric length power synthesizing part VTL2 becomes nearly 90 degrees. COPYRIGHT: (C)2007,JPO&INPIT | ||||||
| 127 | 増幅器 | JP2005514134 | 2004-09-17 | JPWO2005029695A1 | 2006-11-30 | 一実 椎熊 |
| 常に信号の増幅動作を行うキャリア増幅器と、高電力出力時のみに動作するピーク増幅器と、キャリア増幅器とピーク増幅器の出力を合成して出力する合成器と、入力信号をキャリア増幅器側とピーク増幅器側に分配する分配器とを含んで構成される。キャリア増幅器およびピーク増幅器は1個のパッケージ1(1パッケージトランジスタ)に内蔵される。 | ||||||
| 128 | Radio frequency power amplifier module | JP2002217789 | 2002-07-26 | JP2003243945A | 2003-08-29 | KURIYAMA SATORU; ONISHI MASAMI |
| <P>PROBLEM TO BE SOLVED: To provide a radio frequency power amplifier of multistage amplifying method by reducing instability in output power caused by electromagnetic coupling of bias supply terminals and interconnections of each stage and by reducing distortion of output power caused by electromagnetic coupling of the bias supply terminals and the interconnections of each stage to thereby provide a high efficiency. <P>SOLUTION: The mutual interference between circuits via a power line in the radio frequency power amplifier can be reduced, which is provided with a first interconnection 50 connected to a terminal 40 for supplying a voltage for collector driving to power amplifying transistors 10, 11, a second interconnection 60 connected to a terminal 41 for supplying a voltage for collector driving to second transistors 12, 13 controlling a base bias voltage of the transistors 10, 11, and one or more ground parts 70 for electromagnetic shield, wherein the first and second interconnections are separated by the one or more ground parts 70 for electromagnetic shield. <P>COPYRIGHT: (C)2003,JPO | ||||||
| 129 | Amplifier and amplifying method | JP2003007496 | 2003-01-15 | JP2003229732A | 2003-08-15 | GREBENNIKOV ANDREI VIKTOROVICH; JAEGER HERBERT |
| PROBLEM TO BE SOLVED: To provide an efficient tuned switching power amplifier which does not have a series inductance, and has a parallel transmission line of electrical length smaller than 90E. SOLUTION: An amplifier 126 is provided with a switch 128 having a control terminal 138 so as to receive an input signal. The switch 128 controls the supply of DC power to a load 134 via a load circuit network 132. The load circuit network 132 generates a parallel inductance and a parallel capacitance to minimize power losses related to the switch 128, by generating a transient response crossing the switch 128. The transient response ensures that a voltage across the switch is low, until the current which flows the switch substantially becomes zero when the switch is switched from on to off, the voltage across the switch and a differential coefficient of voltage time substantially become zero, before the switch transitions from turning off to on. The parallel inductance is generated by a transmission line of a predetermined electrical length. COPYRIGHT: (C)2003,JPO | ||||||
| 130 | Amplifier | JP9374892 | 1992-03-19 | JPH05267585A | 1993-10-15 | Yoshinobu Sasaki; 善伸 佐々木 |
| PURPOSE: To amplify an input signal through a high-efficiency operation while maintaining the linear property of output power against input power by providing the node of FET gave and input-matching circuit with a gate-voltage control circuit for controlling a gate voltage according to the input power of the input signal. CONSTITUTION: An input-matching circuit 30 is connected with an FET gate and an output-matching circuit 40 is connected with a drain so that an inputted high-frequency signal is amplified and outputted. A gate-voltage control circuit 50 for controlling a gate voltage according to the power of the high-frequency signal is connected with the node of the input-matching circuit 30 and the gate. The gate-voltage control circuit 50 is constituted from a diode 1 with anode connected with the FET gate, a capacitor 2 connected between the cathode of the diode 1 and earth and a gate bias-setting circuit 4 connecting a gate bias terminal 3 being its output with the node of the diode 1 and capacitor 2. COPYRIGHT: (C)1993,JPO&Japio | ||||||
| 131 | DOHERTY AMPLIFIER | PCT/EP2016052423 | 2016-02-04 | WO2016124707A3 | 2016-11-10 | MORONVAL XAVIER BRUNO JEAN |
| A Doherty amplifier (100) having a set of amplifiers (120, 122) comprising a main amplifier (120) and at least one peak amplifier (122), each amplifier of the set of amplifiers having an input and an output, the at least one peak amplifier (122) configured to become operational at a respective threshold power, the Doherty amplifier (100) further comprising: a Doherty amplifier output node (126) coupled to the outputs of the set of amplifiers through an impedance network (108), the impedance network (108) comprising: impedance inverting elements (128) configured to match the impedance of the outputs of the set of amplifiers (120, 122) at the Doherty amplifier output node (126); and a matching system (132) coupled to the outputs of the set of amplifiers, the matching system (132) configured to impedance match the modulated impedance output of the main amplifier (120) to the impedance of the peak amplifiers (122). | ||||||
| 132 | MULTI-BAND HIGH-EFFICIENCY DOHERTY AMPLIFIER | PCT/IB2011001451 | 2011-05-17 | WO2011145002A2 | 2011-11-24 | ACIMOVIC IGOR; OUTALEB NOUREDDINE |
| The present invention relates to a Multi-Band Doherty amplifier. Embodiments of the present invention provide an amplifying structure including a main amplifier configured to amplify a first signal, a peak amplifier configured to amplify a second signal, a tunable impedance inverter configured to perform impedance inversion to modulate a load impedance of the main amplifier, and a combining node configured to receive the amplified second signal from the peak amplifier and an output of the tunable impedance inverter. The tunable impedance inverter includes a tuner configured to tune the impedance inversion over at least one broad frequency band. The tuner is (i) at least one capacitor, (i) at least one varactor, or (ii) at least one open stub shunted by a diode. | ||||||
| 133 | RF POWER AMPLIFIERS WITH LINEARIZATION | PCT/US2009045354 | 2009-05-27 | WO2009155010A3 | 2010-03-11 | ALIDIO RAUL; DUPUY ALEXANDRE; GUMMALLA AJAY; LEE WOO YONG; ACHOUR MAHA |
| Designs and techniques associated with power amplifiers for amplifying RF signals to provide variable power amplification and improved linearity in various RF amplification circuits, including power amplifiers operated under the power back-off conditions. | ||||||
| 134 | HIGH EFFECIENCY RF TRANSMITTER SYSTEM USING NON-LINEAR AMLIFIERS | PCT/IB2006003379 | 2006-05-30 | WO2007029119A2 | 2007-03-15 | BIRAFANE AHMED |
| An RF transmitter with improved efficiency and good linearity decomposes an input AM signal into two signal envelopes with phased modulation at a phase angle ?. The transmitter has three principal embodiments. A first solution uses at least one added RF amplifier for each decomposed signal envelope with one or more amplifiers having a low gain compared to that of a high gain amplifier in another branch for the same signal envelope. A phase angle ?i is determined that corresponds to a switching on two of the 2n + 2 total branches, n = 0, 1, 2, ... . A second solution uses the same general schematic architecture as the classic LINC system that requires only two RF amplifiers, but uses a different decomposition because the two RF amplifiers are used in their nonlinear zone. The decomposed signal envelopes can be variable. The amplified output signal allows the combiner to be used at 100% efficiency in major part of signal. The third solution combines the first and second solutions. | ||||||
| 135 | 電源供給回路、増幅器、通信装置、基地局、電源供給方法 | JP2016573211 | 2016-01-05 | JP6436174B2 | 2018-12-12 | 村尾 洋二; 椎熊 一実 |
| 136 | ドハティアンプ | JP2018034976 | 2018-02-28 | JP2018148558A | 2018-09-20 | ジェームズ・ワン |
| 【課題】小信号時に寄生素子のために十分に高いインピーダンスを示さないサイズの大きなトランジスタを用いても、安定に動作するドハティアンプを提供する。 【解決手段】ドハティアンプは、キャリアアンプと、このキャリアアンプの裸特性と同様の特性を有する少なくとも一つのピークアンプと、キャリアアンプの出力とピークアンプの出力を合成する合成ノードと、キャリアアンプと合成ノードとの間に設けられた電気長がπ/2(ラジアン)の伝送線路と、そしてピークアンプと合成ノードとの間に設けられたインピーダンスラインを備える。キャリアアンプ及びピークアンプはそれぞれ出力マッチング回路を備えておらず、ピークアンプはドハティアンプの出力特性におけるバックオフレベルよりも小さい出力領域でオフ状態に移行しない。 【選択図】図1 |
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| 137 | 増幅装置、送信装置 | JP2013145695 | 2013-07-11 | JP6345916B2 | 2018-06-20 | 山岡 敦志; 山口 恵一 |
| 138 | ドハティアンプ | JP2017230529 | 2017-11-30 | JP2018093489A | 2018-06-14 | ジェームズ・ワン |
| 【課題】対称ドハティアンプのバックオフ量を拡大する。 【解決手段】対称ドハティアンプはキャリアアンプ(101)、ピークアンプ(102)、キャリアアンプの出力に設けた第1のλ/4伝送線路(301)、ピークアンプの出力と第1のλ/4伝送線路の接続点と負荷の間に設けた第2のλ/4伝送線路を備える。第1のλ/4伝送線路のインピーダンスは負荷インピーダンスよりも大きく、第2のλ/4伝送線路のインピーダンスは負荷インピーダンスを√2で除した値よりも大きく設定され、バックオフ領域が6dBよりも拡大されている。 【選択図】図2 |
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| 139 | 無線周波数信号を増幅する装置及び方法 | JP2014559321 | 2013-02-20 | JP6218755B2 | 2017-10-25 | ゼン,ケチウ; リウ,ヨン; ワン,タオ |
| 140 | 調整可能な負荷線 | JP2016539989 | 2014-12-12 | JP6208367B2 | 2017-10-04 | アリストテレ・ハディクリストス; カロジェロ・ダヴィデ・プレスティ; ババック・ネジャティ |
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