| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 181 | Modulation circuit | JP33623997 | 1997-12-08 | JPH11177344A | 1999-07-02 | BUN TADATAMI |
| PROBLEM TO BE SOLVED: To provide an inexpensive modulation circuit whose modulation characteristic is satisfactory, and which can be made into MMIC(Monolithic Microwave Integrated Circuit). SOLUTION: A carrier wave S2 is given to the gate of FET(Field-Effect Transistor) 25 through a capacitor 23 and a resistor 24. The carrier wave S2 is amplified by the FET 25 and is outputted to a drain. A modulation wave S1 is applied to the drain of the FET 25 through a capacitor 21 and an inductor 22, and the drain voltage is controlled. A wave to be modulated V out is selectively taken out from the drain of the FET 25 by the inductor 22 and a capacitor 28, and it is outputted to a load RL through a capacitor 29. COPYRIGHT: (C)1999,JPO | ||||||
| 182 | Mixer | JP18729295 | 1995-07-24 | JPH0983251A | 1997-03-28 | ARIGA MITSUO |
| PROBLEM TO BE SOLVED: To provide a mixer capable of being operated at a low voltage with a positive single power supply without much power consumption. SOLUTION: A prescribed voltage and a data signal Ss superimposed onto the prescribed voltage are given to a drain D of a FET Q1 , and a carrier signal Sc is given to a gate G. The FET Q1 produces a mixed signal So being a mixture of the data signal Ss and the carrier signal Sc. Capacitors C2 , C3 are used to float a source S of the FET Q1 from ground in terms of DC and to connect the source to ground in terms of AC. | ||||||
| 183 | Balanced modulation circuit | JP28488591 | 1991-10-30 | JPH05121946A | 1993-05-18 | MONARI TOSHIHIKO |
| PURPOSE: To obtain the balanced modulation circuit with a large dynamic range for output and operated at a low power supply voltage by combining three sets of differential amplifiers. CONSTITUTION: This circuit is provided with 1st-3rd differential amplifier circuits comprising transistors(TRs) Q11, Q12, and Q17, Q18 and Q19, Q20. Then emitters of the Q17, Q18 are connected together and the common emitter connects to a collector of a Q15 whose emitter connects to a power supply line Vcc. Moreover, collectors of the Q17, Q18 connect to a ground line GND via a resistor 16. Moreover, emitters of the Q19, Q20 are connected together and the common emitter connects to a collector of a Q16 whose emitter connects to the power supply line Vcc. Furthermore, collectors of the Q19, Q20 connect to collectors of the Q17, Q18 respectively and the connecting point connects to the line GND. Thus, each differential amplifier circuit acts like a parallel load with respect to the power supply and is driven by a low power supply voltage. COPYRIGHT: (C)1993,JPO&Japio | ||||||
| 184 | Oscillator circuit | JP19143184 | 1984-09-12 | JPS6085605A | 1985-05-15 | YOOZEFU FUENKU; RIHIARUTO SHIYUTETSUPU |
| 185 | Modulating circuit | JP9939181 | 1981-06-24 | JPS57212807A | 1982-12-27 | YAMAUCHI MASAHIDE |
| PURPOSE:To attain small sized and low power circuit, by inserting a field effect transistor (TR) to an emitter circuit. CONSTITUTION:An FET 9 is connected between the emitter of a TR1 and ground, the drain is connected to the emitter and the source is connected to ground side, and a modulation input terminal (g) is provided to the gate. In this modulation circuit, a modulation transformer which is a cause to large-sized circuit is not used and only very small-sized FET is used. Further, since the gate input impedance of the FET is used. Further, since the gate input impedance of the FET is very high, a modulation input driving the FET is very small, allowing to attain small-sized and low power for applied devices. | ||||||
| 186 | JPS57658B2 - | JP4295274 | 1974-04-16 | JPS57658B2 | 1982-01-07 | |
| 187 | Modulator | JP1069880 | 1980-01-31 | JPS56109003A | 1981-08-29 | KOYANAI HIROSHI |
| PURPOSE:To decrease the harmonic distortion caused in modulated wave and to increase the conversion gain, by modulating the carrier fed to transistors with modulation signals and outputting modulated wave in which carrier is sufficiently suppressed. CONSTITUTION:Each emitter of a pair of NPN transistors (TR)Q5, Q6 is connected in common and fed to the collector of a constant current operating NPN TRQ7. The primary side of a transformer T1 is connected to input terminals 4, 4', the center tap of the secondary coil is grounded, and the signal of in-phase and opposite phase to incoming signal to the terminals 4, 4' is output. The secondary side of the transformer T1 is connected to TRs Q5, Q6 via an LPF consisting of a resistor R8 and a capacitor C8, and a resistor R9 and a capacitor C9. Further, the carrier fed to TRQ7 is modulated with the modulation signal split in opposite phase to output modulated wave in which the carrier component is sufficiently suppressed. Thus, harmonic distortion caused in modulated waves can be reduced and the conversion gain is increased. | ||||||
| 188 | JPS5345665B1 - | JP5857768 | 1968-08-19 | JPS5345665B1 | 1978-12-08 | |
| 189 | JPS5050451A - | JP9378374 | 1974-08-14 | JPS5050451A | 1975-05-06 | |
| 190 | TRANSMITTER AND RECEIVER FOR AN AM*TYPE POWER LINE COMMUNICATION | PCT/KR2012002106 | 2012-03-23 | WO2012134109A3 | 2013-01-10 | KIM YOUNG; CHO HYUN-YOUNG; HONG DU-SEON |
| The present invention relates to a transmitter and a receiver for a power line communication. Particularly, according to one embodiment of the present invention, a transmitter for a power line communication comprises: a generating unit generating a carrier wave having a preset frequency; a signal input unit inputting an image signal from a camera; an AM unit inputting the image signal and the carrier wave, and performing an amplitude modulation (AM) of the carrier wave according to the image signal to generate a modulation signal; and an overlay output unit outputting the amplitude-modulated signal on a power line. | ||||||
| 191 | A MODULATOR FOR AMPLITUDE-MODULATING A SIGNAL | PCT/IB2007051411 | 2007-04-19 | WO2007122562A2 | 2007-11-01 | VAN ZEIJL PAULUS T M; COLLADOS ASENSIO MANEL |
| Modulators (1) for amplitude-modulating signals defined by phase information and envelope codes are provided with first transistors (11) for receiving the phase information and second transistors (12) for receiving the envelope codes. The first main electrode of one transistor (11,12) is coupled to the second main electrode of the other transistor (11,12) and the other second main electrode constitutes an output (51) of the modulator (1). This modulator (1) can be used in any kind of transistor environment and is simple and low cost. The doped areas (84,94) of the coupled first and second main electrodes comprise an overlap to reduce cross-talk and to reduce silicon area. Polar transmitters (2) are provided with this modulator (1) and with a circuit (3) for generating a phase/frequency code and the envelope code and with an oscillator (6) for receiving the phase/frequency code and for generating the phase information. Means for creating a phase shift between the phase information and the envelope code reduce aliases. | ||||||
| 192 | METHOD AND DEVICE FOR CONTROLLING PEAK POWER AND PULSE WIDTH OF A BROADBAND GAUSSIAN PULSE HIGH-POWER RF TRANSMITTER | PCT/EP2006065835 | 2006-08-30 | WO2007025993A3 | 2007-04-19 | LETEMPLIER ALAIN |
| The invention concerns a device for controlling parameters of a pulse of a high power RF pulse transmitter comprising at least one amplifier characterized in that it includes at least the following components: a transmitted pulse detector (4), a video amplifier (5), an analog processing device (6) adapted to supply data concerning the parameters of width and power of the transmitted pulse, a digital processing device (7) receiving the data concerning parameters of the transmitted pulse and adapted to generate the control signals to a device (8) adapted to generate a variable amplitude substantially Gaussian signal synchronized with the synchro transmission and to generate signals for controlling a device (9) adapted to generate a variable amplitude substantially square signal synchronized with the synchro transmission. | ||||||
| 193 | Power feeding device and wireless power feeding system | US14680169 | 2015-04-07 | US09837977B2 | 2017-12-05 | Koichiro Kamata; Shinya Okano; Misako Sato; Shuhei Maeda |
| A resonant power feeding system that can provide high power transmission efficiency between a power feeding device and a power reception device without dynamically controlling the oscillation frequency in accordance with the distance between the power feeding device and the power reception device. High power transmission efficiency between the power feeding device and the power reception device is obtained by addition of a structure for adjusting the matching condition to both the power reception device and the power feeding device. Specifically, a transmission-reception circuit and a matching circuit are provided in both the power reception device and the power feeding device, and wireless signals for adjusting the matching circuit are transmitted and received through a resonant coil. Thus, the power feeding device can efficiently supply power to the power reception device without adjusting the oscillation frequency. | ||||||
| 194 | A METHOD OF TRANSMITTING POWER AND DATA ACROSS A GALVANIC ISOLATION BARRIER, CORRESPONDING SYSTEM AND APPARATUS | US15138702 | 2016-04-26 | US20170070354A1 | 2017-03-09 | Egidio Ragonese; Nunzio Greco; Giuseppe Palmisano |
| Power and data are transmitted via a transformer including primary side and secondary side. A primary side signal is generated by coupling a first oscillator signal modulated with a data signal with a second oscillator signal that is selectively switched on and off. At the secondary side a secondary signal is generated. A demodulator demodulates the secondary signal to recover the data signal. A rectifier processes the secondary signal to recover a power supply signal controlled by switching on and off the second oscillator. | ||||||
| 195 | Power feeding device and wireless power feeding system | US13352383 | 2012-01-18 | US09024482B2 | 2015-05-05 | Koichiro Kamata; Shinya Okano; Misako Sato; Shuhei Maeda |
| A resonant power feeding system that can provide high power transmission efficiency between a power feeding device and a power reception device without dynamically controlling the oscillation frequency in accordance with the distance between the power feeding device and the power reception device. High power transmission efficiency between the power feeding device and the power reception device is obtained by addition of a structure for adjusting the matching condition to both the power reception device and the power feeding device. Specifically, a transmission-reception circuit and a matching circuit are provided in both the power reception device and the power feeding device, and wireless signals for adjusting the matching circuit are transmitted and received through a resonant coil. Thus, the power feeding device can efficiently supply power to the power reception device without adjusting the oscillation frequency. | ||||||
| 196 | Highly optimized digital IQ transmitter chain | US13535827 | 2012-06-28 | US08842777B2 | 2014-09-23 | Stefan van Waasen |
| Circuitry separates a modulation signal into digital sign and magnitude signal components. The digital magnitude signal is converted to an analog magnitude signal. The analog magnitude signal is the mixed with an in-phase or quadrature carrier signal under the influence of the digital sign signal and routed to a driver output stage. | ||||||
| 197 | Modulator, mixer and method for amplitude shift keying modulation | US13400129 | 2012-02-20 | US08797112B2 | 2014-08-05 | Peng Han; Dawei Guo Guo; Jiazhou Liu; Yanfeng Wang |
| An ASK modulator includes a baseband unit which obtains a sequence comprising at least one amplitude value and adds an additional value to each of the at least one amplitude value to generate a modified sequence; a digital-to-analog converter coupled to the baseband unit, the digital-to-analog converter converts the modified sequence to generate a first signal, the additional value is determined based on a half scale of the digital-analog converter; and a mixer which receives the first signal and a second signal and generate a modulated signal by mixing the first signal with the second signal. | ||||||
| 198 | AM transmitter and modulation method using same | US12130709 | 2008-05-30 | US08554160B2 | 2013-10-08 | Shin-ichi Matsuo; Hirokazu Iwata; Fuminori Kinugawa |
| An AM (Amplitude-Modulated) transmitter capable of improving modulation distortion is provided. An adder adds a modulation signal to a pre-set power reference signal. An APC (Automatic Power Control) amplifier compares a level of a detecting signal outputted by the LPF (Low Pass Filter) with a level of an adder signal. The APC amplifier, based on the comparison result, generates a gain controlling signal that makes a difference between a level of the detecting signal and level of the signal approach zero and feeds the gain controlling signal to a power amplifier. The power amplifier modulates the signal outputted from the amplifier by the gain controlling signal and power-amplifies the modulated signal according to a level of the gain controlling signal. Since the APC amplifier feeds the gain controlling signal to the power amplifier, a modulation degree does not depend on a nonlinear distortion characteristic of the power amplifier. | ||||||
| 199 | MODULATOR, MIXER AND METHOD FOR AMPLITUDE SHIFT KEYING MODULATION | US13400129 | 2012-02-20 | US20130162363A1 | 2013-06-27 | Peng Han; Dawei Guo; Jiazhou Liu; Yanfeng Wang |
| An ASK modulator includes a baseband unit which obtains a sequence comprising at least one amplitude value and adds an additional value to each of the at least one amplitude value to generate a modified sequence; a digital-to-analog converter coupled to the baseband unit, the digital-to-analog converter converts the modified sequence to generate a first signal, the additional value is determined based on a half scale of the digital-analog converter; and a mixer which receives the first signal and a second signal and generate a modulated signal by mixing the first signal with the second signal. | ||||||
| 200 | Radio frequency transmitter having an amplifier with power supply modulation | US12692214 | 2010-01-22 | US08447245B2 | 2013-05-21 | Joseph Staudinger; John M. Pigott; Eric J. Toulouse |
| A circuit including a carrier amplifier having an input, an output, a first transistor coupled to a first power supply voltage terminal for receiving a modulated power supply voltage, and a second transistor coupled to a second power supply voltage terminal for receiving a fixed power supply voltage is provided. The circuit further includes a peaking amplifier having an input coupled to the input of the carrier amplifier and an output coupled to the output of the carrier amplifier. | ||||||
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