首页 / 国际专利分类库 / 电学 / 基本电子电路 / 调制 / 幅度调制(H03C5/00,H03C7/00优先)
序号 专利名 申请号 申请日 公开(公告)号 公开(公告)日 发明人
101 Amplitude modulating circuit JP4376582 1982-03-19 JPS58161506A 1983-09-26 KOBAYASHI MIKI
PURPOSE:To improve greatly the power efficiency and at the same time to simplify the constitution of an amplitude modulating circuit, by superposing a modulating signal on the reference voltage of a switching regulator circuit of a power supply for a carrier power amplifier and then modulating the amplitude of the carrier wave. CONSTITUTION:A carrier power amplifier is provided with a transistor TR13, a transformer Tf11 and a capacitor C14. For a modulating signal amplifier IC12, a modulating signal is superposed on the reference voltage generated from a Zener diode D12 and a resistor R12 which constitute a switching regulator. This superposed signal and voltage is used to a positive input of a comparison amplifier IC11. The voltage E0 which is supplied to the carrier power amplifier as a negative input of the amplifier IC11 is equal to (ERef+e) (R16+R17)/R17, and the amplitude is modulated for the output of the carrier power amplifier. In this case, ERef means the reference voltage produced at the diode D12 and (e) is the voltage of the modulating signal. In such a constitution, the efficiency of the electric power supplied to a power amplifying circuit is greatly increased. In addition, a power transistor is eliminated to simplify the constitution of an amplitude modulating circuit.
102 Digital phase area amplitude modulator JP18071381 1981-11-11 JPS5881364A 1983-05-16 ARU KOBARITSUKU; RORII HATSUSAN
PURPOSE:To obtain an amplitude modulator which does not require multiplication, by performing amplitude modulation in a phase area. CONSTITUTION:A modulated signal Rm(T) is converted by an A/D converter 70 into a digital signal, which is inputted to an ROM60. The ROM60 outputs a signal X(T) corresponding to X(T)=cos<-1>[0.5(1+MRm(T)]to a polarity generator 50. In this case, M is a modulation index. Further, a rectangular wave having +1 positive amplitude and -1 negative amplitude is supplied to the polarity generator 50, which outputs a signal S(T)X(T) obtained by inverting the polarity of the signal X(TR) alternately by the rectangular wave S(TR). The output omegacT of a phase accumulator 2 and the output S(TR)X(T) of the polarity generator 50 are summed up by an adder 30, whose output cT+S(TR)X(T) is inputted to an ROM100. The ROM100 outputs sin[omegacT+S(T)X(T)], and a low-pass filter 120 outputs amplitude-modulated components of sin(omegacT)cos[X(T)]=sin(omegacT) [1+MRm(T)]selectively from the output of the ROM100.
103 Amplitude modulator using frequency multiplier JP15098781 1981-09-24 JPS5851603A 1983-03-26 MINAMI SHIYOUGO
PURPOSE:To obtain an amplitude modulator of microwave and milliwave bands with small size and simple construction, by superimposing a modulation signal on a bias voltage applied to a bias circuit of a frequency multiplier and amplitude-modulating an output of the frequency multiplier. CONSTITUTION:A frequency multiplier consists of an input matching circuit 1, a frequency multiplying diode 2, an output BPF3 and a bias circuit 4. The circuit 4 is connected to an anode of the diode 2, and a bias voltage value is set so that an output of the frequency multiplier is maximum. Through the superimposition of a base band signal on the bias voltage, the output of the frequency multiplier is controlled for the amplitude modulation. The output of a transmission local oscillator 13 is frequency-multiplied at the frequency multiplier 14 to be a transmission frequency, and the multiplier 14 is ampliude-modulated with the base band signal inputted from a terminal 12 and transmitted from an antenna 15.
104 Amplitude modulation system JP12009879 1979-09-20 JPS5644206A 1981-04-23 YOSHIDA TETSUO
PURPOSE:To make high-efficiency and linear modulation possible, by amplifying two-phase modulation signals shifted by + or -DELTAphi and a nonmodulation signal different from the carrier wave in phase by 90 deg. by switching power amplfiers. CONSTITUTION:After the carrier signal is modulated into signals having the phase inverted mutually by phase modulating circuit 52, they are subjected to + or -theta phase modulation by the sound signal. Then, phase modulating circuit 52 outputs +phi and pi-phi phase modulation signals. Phase modulation waves phi and pi-phi modulated in directions opposite to each other are amplified by switching amplifiers 53 and 54, and these outputs are synthesized with a signal different from the carrier wave for nonmodulation in phase by pi/2. This output is taken out from matching circuit 58, thereby realizing a good modulation characteristic for the input signal.
105 Amplitude modulation system JP12009579 1979-09-20 JPS5644205A 1981-04-23 YOSHIDA TETSUO
PURPOSE:To improve efficiency of a modulator, by switching and operating series modulating circuits alternately according to component of the modulation signal. CONSTITUTION:Since the modulation signal input through capacitor 42 is shifted in resistance 41 by power source voltage components and is applied to diode 40, negative components of the modulation signal are applied to the gate of FET32 for modulation, and the conduction degree of FET32 is controlled during this time. Therefore, amplifier 35 is subjected to series modulation. Positive components of the modulation signal are applied to the gate of FET33 by the action of diode 44 to subject amplifier 34 to series modulation, and outputs of both amplifiers are synthesized to output an amplitude modulation signal. Since modulation can be performed correspondingly to modulation signal components in spite of a single power source, loss can be reduced.
106 JPS555942B2 - JP10859875 1975-09-09 JPS555942B2 1980-02-12
107 과금 처리부를 가지는 급전 장치 및 수전 장치 KR1020147021587 2013-01-31 KR1020140134267A 2014-11-21 사코요이치로; 다다노다로; 와시로다카노리; 다케무라가즈요시; 하야시구니야; 소마이사오; 다나카가요코; 히가노사토시; 세리타가즈토시
본 발명은 전력에 대한 과금용 장치, 방법 및 프로그램에 관한 것이다. 과금 방법은, 급전 장치에 의해 전송되는 전력에 관한 양에 대한 과금 정보를 생성하는 단계와, 과금 정보에 기초하여 과금 처리를 행하는 단계와, 과금 처리의 결과에 기초하여 전력을 선택적으로 전송하는 단계를 포함할 수 있을 것이다. 급전 장치는 과금 정보 생성부와, 과금 처리부와, 전력 제어부를 포함할 수 있을 것이다. 다른 과금 방법은 과금 정보가 수신되었는지를 판정하는 단계와, 과금 정보가 수신되었다고 판정된 후에 과금 처리를 행하는 단계와, 급전 장치에 응답 신호를 전송하는 단계와, 과금 처리에 관한 통지 관련 정보를 제공하는 단계를 포함할 수 있을 것이다. 급전 장치는 과금 처리부와, 전력 제어부와, 통지 제어부를 포함할 수 있을 것이다.
108 복합 캐리어 복조 방법 및 장치 KR1020127029900 2011-05-30 KR101403912B1 2014-06-09 두,판핑; 양,준이
본 발명에서는 복합 캐리어 복조 방법 및 장치를 제공한다. 복합 신호를 이용하여 e -iωt 또는 e i ωt 를 캐리어 신호로 하여 기변조된 신호에 대하여 복조를 진행하여 복합 캐리어 복조 신호를 취득함으로써 주파수 스펙트럼 이용율을 향상시킨다. 본 발명에서 제공하는 복합 캐리어 복조 방법은 좌우 주파수 스펙트럼 자원을 충분히 이용하고 신호 에너지 손실이 작기 때문에, 채널의 용량을 크게 향상시킨다.
109 전원 제어 루프에 공급되는 진폭 변조 신호를 제어하는 방법, 무선 주파수(RF) 송신기를 위한 폐쇄 루프 전력 제어 시스템, 및 이를 구비한 휴대형 송수신기 KR1020087003435 2006-07-12 KR101312877B1 2013-09-30 로젠블리트,드미트리; 소래티,터대드; 댐가드,모텐
무선 주파수(RF) 송신기를 위한 폐쇄 루프 전력 제어 시스템은, 전력 제어 루프에 위치하며, 전력 레벨 신호 및 역 표현의 전력 제어 신호를 수신하도록 구성된 제1 가변 이득 소자, 상기 전력 제어 루프에 위치하며, 에러 신호 및 상기 전력 제어 신호를 수신하도록 구성된 제2 가변 이득 소자, 및 진폭 변조(AM) 신호 및 상기 전력 제어 신호를 수신하도록 구성된 제3 가변 이득 소자를 포함하며, 상기 제3 가변 이득 소자는, 상기 전력 제어 신호가 최소 소정값 아래에 있는 경우에 상기 AM 신호에 인가되는 이득을 감소시키고, 상기 AM 신호를 기준 신호로서 제공하도록 구성되는 이득 특성을 갖는다. 전력 제어, 무선 주파수, 전력 제어, 가변 이득 소자, 진폭 변조, 전력 증폭기
110 디지털 송신기 시스템 및 방법 KR1020020006978 2002-02-07 KR100470255B1 2005-02-07 가세란줄리오안토니오; 카민스키웰터죠셉; 콜스루드애릴드
A digital transmitter converts a digital signal into analog form with a digital to analog converter (DAC) and uses an analog signal image produced from the DAC to provide an analog signal at a transmission frequency and/or uses a projected analog signal image to produce analog signals for transmission. Rather than removing analog signal images with a low pass filter at the output of the DAC and/or using analog signal images and analog mixers for frequency conversion, the digital transmitter uses the analog signal images from the DAC to produce the analog signals at the desired frequency/frequencies. By setting and/or adjusting the conversion rate for the DAC and/or the digital signal frequency/frequencies, the analog signal images produced from the DAC can be positioned in the desired frequency band(s). For example, the digital transmitter can position the digital signals within non-overlapping portions of a conversion bandwidth defined as one-half the conversion rate for the DAC. When the digital signals are converted into analog form, the DAC produces analog signal images periodically repeated at multiples of one-half the conversion rate such that analog signal images are produced at the appropriate frequency band(s) for amplification and transmission. <IMAGE> <IMAGE>
111 디지털 송신기 시스템 및 방법 KR1020020006978 2002-02-07 KR1020020067625A 2002-08-23 가세란줄리오안토니오; 카민스키웰터죠셉; 콜스루드애릴드
PURPOSE: A digital transmitter system and a method therefor are provided to convert a digital signal into analog signal using a DAC(Digital to Analog Converter), and uses an analog signal image produced from the DAC to provide an analog signal at a transmission frequency or uses a projected analog signal image to produce analog signals for transmission. CONSTITUTION: If an SPU(Signal Processing Unit)(42a-42i) receives a digital signal comprising a plurality of digital signals, the digital signals are added together. Each SPU(42a-42i) encodes the digital signals, adds error correction information to the digital signals, performs bit interleaving, performs I(In-phase) and Q(Quadrature) modulation on the digital signals, and performs digital frequency conversion up or down to produce a digital IF(Intermediate Frequency) signal. If the position of the digital signals within the conversion bandwidth needs to be adjusted, a digital frequency converter, for example using an NCO(Numerically Controlled Oscillator) and digital mixer for frequency spectrum positioning, tunes baseband digital signals or the digital IF signal for the proper positioning of the digital signals within the conversion bandwidth for the DAC(22) such that the resulting analog image falls within the desired frequency band at the output of the DAC(22).
112 다중 채널 디지탈 송수신기 및 방법 KR1019960704752 1995-12-05 KR100199316B1 1999-06-15 스미스,파울,펠딩; 스미스,존,엠.; 롯틴가우스,알란,피.; 래더,셰리아,마리에; 핀클리,대니,토마스; 루즈,유다,예후다; 루레이,다니엘,모리스; 레이어드,케빈,마이클; 코브리네츠,토니; 엘더,로버트,씨.; 배일리,도날드,이.
다중 채널 디지탈 송수신기(400)는 업 링크(uplink) 무선 주파수 신호를 수신하며, 이러한 신호를 디지탈 중간 주파수 신호로 변환한다. 디지탈 컨버터 모듈(426)을 포함하는 디지탈 신호 처리는 다수의 안테나(412)에서 수신된 디지탈 중간 주파수 신호를 선택하고 이들 신호를 기본 대역 신호로 변환하도록 채용된다. 상기 기본 대역 신호는 그로부터 통신 채널을 회복하도록 처리된다. 다운링크(dowmlink)기본 대역 신호도 또한 처리되고, 디지탈 컨버터 모듈(426)내에서 처리하는 디지탈 신호는 다운링크 기본 대역 신호를 디지탈 중간 주파수 신호로 업 변환0, 변조한다. 디지탈 중간 주파수 신호는 아날로그 무선 주파수 신호로 변환되고, 송신 안테나(420)로부터 증폭 및 방사된다.
113 디지탈 기술을 이용한 기저대 위상 변조기 장치 KR1019880003750 1988-04-02 KR1019960003786B1 1996-03-22 스탠리로이그리스워드쥬니어; 브란제라드무싸티
내용 없음.
114 給電装置、受電装置、課金方法、およびプログラム JP2012085362 2012-04-04 JP6094047B2 2017-03-15 佐古 曜一郎; 只野 太郎; 和城 賢典; 竹村 和純; 林 邦也; 相馬 功; 田中 佳世子; 日賀野 聡; 芹田 和俊
115 給電装置および給電システム JP2012092846 2012-04-16 JP6007561B2 2016-10-12 長谷野 慎一; 浦本 洋一
116 変調信号生成装置及び無線装置 JP2015018084 2015-02-02 JP2016144012A 2016-08-08 江頭 慶真; 山口 恵一
【課題】高調波成分を低減することができる変調信号生成装置及び無線装置を提供すること。
【解決手段】入信号を変調して出力信号を生成する変調信号生成装置は、互いに並列に接続され、制御信号に基づいて駆動し増幅信号をそれぞれ生成する複数の増幅器と、複数の前記増幅信号を合成し、ステップ状の振幅波形を有する前記出力信号を合成する合成器と、前記入力信号の周期より短い周期で、前記入力信号の振幅値に基づいて駆動する前記増幅器の数を決定する決定部と、前記決定部によって決定された前記増幅器の数、前記入力信号の振幅値及び前記入力信号の振幅値の増減に基づいて前記複数の増幅器のうち駆動させる増幅器を選択し、選択した前記増幅器を駆動させる前記制御信号を生成する制御信号生成部と、を備える。
【選択図】図1
117 復調装置、これを用いた復調集積素子及び変復調集積素子 JP2015503094 2012-12-07 JP2015511806A 2015-04-20 ヨン パク、スン; イル キム、サン
【課題】スピン素子の位相同調特性を用いて振幅位相変調、周波数位相変調の多様な変調信号を復調することができ、基本波の振幅を監視して高調波の流入有無を判別して検波することが可能な復調装置、これを用いた復調集積素子及び変復調集積素子を提供する。【解決手段】本発明による復調装置は、発振信号を出するスピン素子;前記スピン素子に所定の位相同調特性を付与し、前記発振信号が前記スピン素子に入力される変調信号に同調するようにする位相制御部;及び前記スピン素子から出力される前記変調信号に同調した発振信号を復調して前記発振信号が持つ情報を復元する検波器;を含む。【選択図】図2
118 Method for processing digital signal in analog format and transmitter JP2002036400 2002-02-14 JP2002271212A 2002-09-20 GARCERAN JULIO ANTONIO; KAMINSKI WALTER JOSEPH; KOLSRUD ARILD
PROBLEM TO BE SOLVED: To produce an analog signal for transmission by converting a digital signal into analog format, providing an analog signal at a transmission fre quency using an analog signal image produced by a DA converter(DAC), and using the projected analog signal image. SOLUTION: A digital transmitter produces an analog signal at a desired frequency, using the analog signal image from the DAC. By setting or adjusting the conversion rate for the DAC or the digital signal frequency, the analog signal image produced from the DAC can be positioned in the desired frequency band. When the digital signal is converted into analog format, the DAC produces an analog signal image repeated at integral multiples of half the conversion rate, so that the analog signal image can be produced at an appropriate frequency band suitable for amplification and transmission. COPYRIGHT: (C)2002,JPO
119 Multi - carrier transmission device and method JP2000571555 1998-09-23 JP2002525950A 2002-08-13 ポスティ ハーリ
(57)【要約】 【解決手段】 マルチ−キャリア伝送装置及び方法が記載され、そこでは、複数のキャリア信号がデジタルドメインで合成され、そして、合成されたデジタルキャリア信号を伝送されるべきアナログ信号に変換するためのD/A変換手段(3)に供給される。 前記複数のキャリア信号のそれぞれを、合成されてD/A変換手段(3)に供給される前に、プリ−スケーリングするためのスケーリング手段(51から54)によって、D/A変換手段(3)の周波数特性は補償される。 キャリア信号を表すデジタルデータを対応する周波数−従属デジタルスケーリングワードで乗算することによって、プリ−スケーリングを実施することができる。 それによって、信号処理集中デジタルフィルタ又は理想的でないアナログフィルタの必要性を排除することができる。 デジタル電制御が提供される場合には、スケーリングワードを電力制御ワードと組み合わせることができる。
120 Multi-channel digital transceiver and methods JP52120296 1995-12-05 JPH10502513A 1998-03-03 シー エルダー・ロバート; コブリネッツ・トニー; エム スミス・ジョン; フィールディング スミス・ポール; トマス ピンクリー・ダニー; イー ベイリー・ドナルド; モリス ラリー・ダニエル; イェフダ ルズ・ユダ; マリー レイダー・シェリア; マイケル レェアド・ケビン; ピー ロッティングハウス・アラン
(57)【要約】 マルチチャネルデジタル送受信機(400)はアップリンク無線周波信号を受信しかつこれらの信号をデジタル中間周波信号に変換する。 デジタル変換器モジュール(426)を含む、デジタル信号処理が使用されて複数のアンテナ(412)において受信されたデジタル中間周波信号を選択しかつこれらの信号をベースバンド信号に変換する。 該ベースバンド信号はそこから通信チャネルを再生するために処理される。 ダウンリンクベースバンド信号も処理されかつデジタル変換器モジュール(426)内のデジタル信号処理は該ダウンリンクベースバンド信号をデジタル中間周波信号へとアップコンバートとしかつ変調する。 該デジタル中間周波信号はアナログ無線周波信号に変換され、増幅されかつ送信アンテナ(420)から放射される。
QQ群二维码
意见反馈