| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 161 | Control method of digital amplitude modulation devices and digital amplitude modulator | JP2012056189 | 2012-03-13 | JP5342033B2 | 2013-11-13 | 祐紀 舟橋; 誠記 片山 |
| A digital amplitude modulation device comprising a power supply unit, a measurement unit, an arithmetic calculation unit, and a power control unit. The power supply unit provides power supply voltage to a plurality of power amplifiers. The measurement unit measures the output power of a synthesizer, and the reflection coefficient. The arithmetic calculation unit calculates the power loss occurring in each power amplifier in the on state and the reflected power consumed by each power amplifier in the on state, on the basis of the output power and the reflection coefficient measured by the measurement unit and on the basis of information about the input power provided from the power supply unit. The power control unit controls all power amplifiers to be off, if the sum of the power loss and the reflected power calculated by the arithmetic calculation unit is greater than a first threshold value; and controls the input voltage for the power supply unit or controls the on/off status of the plurality of power amplifiers, so as to perform normal operation if said sum is less than a second threshold value, and to perform increased power operation or reduced power operation on the basis of the rated power if said sum is at least the second threshold value but no more than the first threshold value. | ||||||
| 162 | Digital amplitude modulation device, and method of controlling digital amplitude modulation device | JP2012056189 | 2012-03-13 | JP2013191997A | 2013-09-26 | FUNAHASHI YUKI; KATAYAMA SEIKI |
| PROBLEM TO BE SOLVED: To protect power amplifiers while keeping transmission of an amplitude-modulated wave.SOLUTION: A digital amplitude modulation device includes a power supply section, a measurement section, an arithmetic section and a power control section. The power supply section supplies a supply voltage to a plurality of power amplifiers. The measurement section measures an output power and a reflection coefficient of a combiner. The arithmetic section calculates a lost power occurring in each power amplifier in an on state and a reflected power consumed by each power amplifier in an on state on the basis of the output power and reflection coefficient measured by the measurement section and information on input power given from the power supply section. The power control section controls all the power amplifiers to an off state if the sum of the lost power and reflected power calculated by the arithmetic section is larger than a first threshold, performs a normal operation if the sum is smaller than a second threshold, and controls on/off the input voltage of the power supply section or a plurality of power amplifiers as a power-up operation or power-down operation on the basis of a rated power if the sum is not larger than the first threshold nor smaller than the second threshold. | ||||||
| 163 | c type inverter to prevent the body potential modulation circuit and process variations to realize the process variation prevention method in the sub-threshold integrated circuit | JP2011517743 | 2009-09-04 | JP5275462B2 | 2013-08-28 | 豪 ▲羅▼; 雁 ▲韓▼ |
| 164 | Signal modulation circuit | JP2008325654 | 2008-12-22 | JP5269576B2 | 2013-08-21 | 茂 小林; 道明 松尾; 潤二 佐藤 |
| A signal modulator that can control transmission power if level adjustment of a continuous signal from an oscillator is executed is provided. A pulse generator of one example of a signal modulator includes an oscillator, a control signal generator, a multiplier, a filter, and a control section. The oscillator and the multiplier are active circuits formed of active elements. A continuous signal is output from the oscillator and is input to the multiplier and the multiplier intermittently operates by a control signal output from the control signal generator, whereby a pulse signal is generated and the power level is easily adjusted by a signal from the control section. | ||||||
| 165 | Method and device for controlling the peak power and pulse width of the broadband Gaussian pulse high power rf transmitter | JP2008528517 | 2006-08-30 | JP5028678B2 | 2012-09-19 | ルタンプリエ、アラン |
| 166 | Power supply device and noncontact power supply system | JP2012005992 | 2012-01-16 | JP2012165633A | 2012-08-30 | KAMATA KOICHIRO; OKANO SHINYA; SATO MISAKO; MAEDA SHUHEI |
| PROBLEM TO BE SOLVED: To provide a power supply system of a resonance method, by which high power transmission efficiency can be obtained between a power supply deice and a power reception device without dynamically controlling the oscillation frequency in accordance with the distance between the power supply device and the power reception device.SOLUTION: High power transmission efficiency between a power supply device and a power reception device is obtained by adding a structure for adjusting the matching condition to both the power supply device and the power reception device. In particular, each of the power supply device and the power reception device is provided with a transmitter-receiver circuit and a matching circuit, and transmission and reception of a radio signal for adjusting the matching circuit is performed via a resonance coil. Accordingly, the power supply device can supply the power efficiently to the power reception device without adjusting the oscillation frequency. | ||||||
| 167 | Pulse modulation circuit | JP2007157937 | 2007-06-14 | JP4982260B2 | 2012-07-25 | 潤二 佐藤; 茂 小林; 卓 藤田 |
| 168 | Radio frequency modulator | JP2011535660 | 2009-11-05 | JP2012508518A | 2012-04-05 | リンドキスト，ジュニア，ロバート・エイ; ロドリゲス，イストヴァン |
| 無線周波変調システムは、パルス変調器によって制御される無線周波増幅器を有する。 このパルス変調器は、パルス変調器は、第１スイッチング回路と、第２スイッチング回路とを含む。 第１スイッチング回路は、入力パルスに応答して、無線周波増幅器によって無線周波信号を増幅しようとするときに、基準電位に対するｄｃ電圧を出力電極に結合し、無線周波信号を出力電極から切断しようとするときにｄｃ電圧を出力電極から切断する。 ｄｃ電圧が出力電極に結合されているとき、電荷が蓄積エレメントに蓄積される。 第２スイッチング回路は、入力パルスに応答して、ｄｃ電圧を出力電極から切断するときに、蓄積されている電荷を放電する。
【選択図】 図２ |
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| 169 | Pulse generating circuit and a modulator | JP2006343269 | 2006-12-20 | JP4447596B2 | 2010-04-07 | 茂 小林; 道明 松尾; 卓 藤田 |
| 170 | Resonant power converter for radio-frequency transmission and method | JP2008024851 | 2008-02-05 | JP2008125127A | 2008-05-29 | NORSWORTHY STEVEN R; NORSWORTHY ROSS W |
| <P>PROBLEM TO BE SOLVED: To provide an improved method and apparatus for signal and power conversion. <P>SOLUTION: A resonant power converter (220) for ultra-efficient radio frequency transmission and associated methods are disclosed. In one embodiment, the converter is digitally actuated and uses a combination of a noise-shaped encoder (222), a charging switch (224), and a high-Q resonator (204) coupled to an output load (206), typically an antenna or transmission line. Energy is stored in the electric and magnetic fields of the resonator, which in turn, delivers power to the load (206), with very little wasted energy in the process. Active power amplifier is not required. The apparatus (220) can be used in an arbitrary RF signal application (wireless or others), including, for example cellular handsets, local- or wide-area network transmitters, or even radio base-stations. <P>COPYRIGHT: (C)2008,JPO&INPIT | ||||||
| 171 | Amplifying circuit | JP2007203370 | 2007-08-03 | JP2008042917A | 2008-02-21 | KOBAYASHI YASUSHI; WARR PAUL; MORRIS KEVIN |
| <P>PROBLEM TO BE SOLVED: To provide an amplifying circuit which is capable of enhancing current efficiency and will not cause input signal band to be restricted. <P>SOLUTION: The amplifying circuit 20 comprises an operational amplifier 22, of which a non-inverted input is connected to the input of the amplifying circuit, and an inverted input is connected to an output of the amplification circuit; and a resistor Rsense is connected between the output of the operational amplifier 22 and the output of the amplifying circuit 20. A switch mode power supply circuit 24, of which the first and second inputs are connected to the output of the operational amplifier 22 and to the output of the amplification circuit 20, respectively, is connected to the output of the amplifying circuit via an inductor. <P>COPYRIGHT: (C)2008,JPO&INPIT | ||||||
| 172 | Pulse modulation circuit and pulse modulation method | JP2007157937 | 2007-06-14 | JP2008042890A | 2008-02-21 | SATO JUNJI; FUJITA TAKU; KOBAYASHI SHIGERU |
| <P>PROBLEM TO BE SOLVED: To generate a pulse modulation signal independent of transmission data signal string and having abrupt rising, desired pulse width, and desired timing. <P>SOLUTION: A first control signal is generated if transmission data S11 is "1" and a second control signal is generated if the transmission data S11 is "0" in a control signal generating unit 110. During the on-state of the first control signal, an oscillator 1200 of an intermittent operation circuit 120 is put under control into an oscillation state for generating a desired first oscillation signal. During the on-state of the second control signal, the oscillator 1200 is put under control into an idling state for generating a second oscillation signal with amplitude lower than the first oscillation signal. <P>COPYRIGHT: (C)2008,JPO&INPIT | ||||||
| 173 | Electronic circuitry, modulation method, and an information processing apparatus and method | JP2002301256 | 2002-10-16 | JP3891421B2 | 2007-03-14 | 龍男 前田; 昭彦 山形 |
| 174 | Radio frequency transmission resonant power converter and method | JP2003575570 | 2003-03-04 | JP2005519566A | 2005-06-30 | ノースワージィ、スティーヴン、アール．; ノースワージィ、ロス、ダブリュー． |
| 非常に効率的な無線周波数伝送用の共振電力変換器（２２０）と、関連する方法とを開示する。 １つの例示の実施の形態では、本発明はディジタル駆動であって、ノイズシェーピング符号器（２２２）と、充電スイッチ（２２４）と、一般にアンテナまたは伝送線である出力負荷（２０６）に結合する高Ｑ共振器（２０４）との組合せを用いる。 共振器の電界及び磁界内にエネルギーを蓄積して負荷（２０６）に電力を与える。 この過程で失われるエネルギーは非常に小さい。 アクティブな電力増幅器は必要ない。 この装置（２２０）は、例えば携帯電話、ローカル・エリア・ネットワークやワイド・エリア・ネットワークの送信機、無線局などの文字通り任意のＲＦ信号アプリケーション（無線その他）に用いることができる。 | ||||||
| 175 | Rf system | JP2003545020 | 2002-11-12 | JP2005510138A | 2005-04-14 | オー、ダック−ス; ヨン ク キム、 |
| 【課題】ＲＦシステムにおいて、ＲＦスイッチとＲＦ変調部を一体とする。
【解決手段】複数のＲＦ入力端子１１０、１２０は、それぞれアンテナ２１、２２と接続される。 ＲＦリレー１３０は、外部入力されたＲＦリレー制御信号により、ＲＦ入力端子１１０、１２０に入力したＲＦ信号を選択的に出力し、マルチ信号中、特定信号を選択し、非選択信号が流入することを回路的に遮断する。 ＲＦ信号分配器は、一つ以上のＲＦ信号分配器１５０ａ／１５０ｂで構成され、ＲＦ増幅器１４０から増幅され出力されるＲＦ信号を分配する。 ＲＦ変調器１６０は、デジタル（又はアナログ）同調及び復調部５０から出力されるデジタル(又はアナログ)ビデオ／オーデイオ信号を受信し、特定アナログチャンネル放送として変調し、ＲＦ信号を出力する。 ＲＦ選択スイッチ１７０は、外部の制御信号に基づき、ＲＦ信号分配器１５０又は変調機１６０から出力されたＲＦ信号を選択し、出力端子１８０に出力する。 |
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| 176 | Amplitude modulator | JP2001520936 | 2000-08-14 | JP2003508959A | 2003-03-04 | ジークフリート、アーノルド; トーマス、アイベル; ペーター、チューリンガー |
| (57)【要約】 データ（ＤＡ）をトランスポンダ（２）に送信するための送信装置（１）において、上記装置は、データ（ＤＡ）を送出するデータ供給源（５）と、搬送波信号（ＣＳ）を発生する搬送波信号発生器（６）と、データ（ＤＡ）および搬送波信号（ＣＳ）が印加され得る変調手段（７）とを含み、上記変調手段は搬送波信号（ＣＳ）をデータ（ＤＡ）に従って変調し、且つ変調された搬送信号（ＣＳＭ）を入力抵抗（９）を持つ送信手段（８）に送出するために設けられ、上記変調手段（７）は、送信手段（８）の入力抵抗（９）と共に抵抗ネットワークを形成する可変出力抵抗（１０）を有する変調手段（７）と、出力抵抗（１０）をデータ（ＤＡ）に従って変更する抵抗変更手段（２５）とを有するものである。 | ||||||
| 177 | Ask modulator and ask modulation method | JP21551698 | 1998-07-30 | JP3362672B2 | 2003-01-07 | 豊栄 山崎; 一実 椎熊 |
| 178 | Method of modulating the amplitude of the antenna signal | JP2000608500 | 2000-03-22 | JP2002540708A | 2002-11-26 | シャラ ブルノ |
| (57)【要約】 本発明は、高インピーダンスが備わり、ゼロでない内部抵抗を示す二進ポート（Ｐ１−Ｐ４）を有する制御回路（２）によって、誘導型アンテナ回路（１０）に適用される、アンテナ信号（Ｓａ）の振幅を変調する方法に関する。 本発明によると、アンテナ回路に電力が供給されることを確実にしている信号（Ｓｐ）は、制御回路の少なくとも二つのポート（Ｐ１−Ｐ４）によって出され、アンテナ信号（Ｓａ）の振幅は、ポート（Ｐ１−Ｐ４）の少なくとも一つの出力状態を変えることによって変調される。 本発明は、特に、遠隔操作可能なチップカード読取り機との使用に適する。 | ||||||
| 179 | Pulsed intelligent rf modulating controller | JP2002039884 | 2002-02-18 | JP2002324698A | 2002-11-08 | NASMAN KEVIN P; VONA DANIEL J JR; RADOMSKI AARON T; PULHAMUS JR WILLIAM R |
| PROBLEM TO BE SOLVED: To provide a control method to control output of a generator. SOLUTION: An output (22) of a generator supplies an output signal (12) having a certain settling time to a load having a certain impedance. The settling time is decided for the output signal. The output signal modulates amplitude (20) with modulation waveform. A sense signal representing the modulated output signal is generated (26). The sense signal is sampled (28) at the sampling time point based on the settling time of the output signal, and a digital display of the sampled sense signal is generated. The amplitude modulation of the output is controlled (14) based on the digital display of the sampled sense signal. COPYRIGHT: (C)2003,JPO | ||||||
| 180 | Ask modulator and ask modulation method | JP21551698 | 1998-07-30 | JP2000049874A | 2000-02-18 | SHIIKUMA KAZUMI; YAMAZAKI TOYOE |
| PROBLEM TO BE SOLVED: To provide the ASK modulator and ASK modulation method of a microwave band capable of being miniaturized, lowering power consumption and satisfying the modulation characteristics of a D/U, an occupancy band width and an ON/OFF ratio, etc., by using a passive element. SOLUTION: Base band signals are frequency band limited and outputted by a band limiting circuit 1. The waveform of the output signals becomes the signal waveform of smoothly rising and falling to a time base. Since a driving circuit 2 is operated as a buffer amplifier whose voltage gain is 1 between the band limiting circuit 1 and an ASK modulation circuit 3, an output voltage waveform equal to the output voltage waveform of the band limiting circuit 1 is outputted. The ASK modulation circuit 3 interrupts the carrier waves of the microwave band inputted from the outside by turning a field effect transistor 61 ON and OFF by the voltage of the output signals from the driving circuit 2, performs ASK modulation (binary ASK) and outputs desired ASK modulated waves. COPYRIGHT: (C)2000,JPO | ||||||
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