子分类：
| 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 | Device for modulating and/or amplifying electric signals | US41389854 | 1954-03-03 | US2920276A | 1960-01-05 | HEINRICH JONKER GERARD; MEYER CLUWEN JOHANNES |
| 122 | High frequency integrating signal detector | US60385056 | 1956-08-13 | US2872577A | 1959-02-03 | HART ROBERT W |
| 123 | Keyed filter | US50152455 | 1955-04-15 | US2825808A | 1958-03-04 | DOELZ MELVIN L; HEALD EARL T |
| 124 | Magnetic discriminator | US46969354 | 1954-11-18 | US2819444A | 1958-01-07 | BENNETT WALKER ALEC HERVEY |
| 125 | Signal detector | US35632253 | 1953-05-20 | US2730665A | 1956-01-10 | HART ROBERT W |
| 126 | Frequency converter system for radio receivers | US6105548 | 1948-11-19 | US2614212A | 1952-10-14 | LOUGHLIN BERNARD D |
| 127 | Signal rectifier circuit | US26807839 | 1939-04-15 | US2239915A | 1941-04-29 | SEYMOUR HUNT |
| 128 | Radio detecting system | US63466132 | 1932-09-24 | US2233339A | 1941-02-25 | BROWN JR REYNOLDS D |
| 129 | Modulation system | US24063938 | 1938-11-16 | US2224580A | 1940-12-10 | WISE RAYMOND O |
| 130 | Radio receiving system | US10268536 | 1936-09-26 | US2141730A | 1938-12-27 | LOON CAREL JAN VAN |
| 131 | Alternating current operated radio set | US9080726 | 1926-02-26 | US1850270A | 1932-03-22 | ALEXANDER NYMAN |
| 132 | MEMS DEVICE ANNEALING BY LASER | PCT/US2004027226 | 2004-08-20 | WO2005035436A3 | 2005-11-10 | ZALALUTDINOV MAXIM; REICHENBACH ROBERT B; AUBIN KEITH; HOUSTON BRIAN H; ZEHNDER ALAN T; PARPIA JEEVAK M; CRAIGHEAD HAROLD G |
| A method of increasing a quality factor for a micromechanical resonator uses a laser beam to anneal the micromechanical resonator. In one embodiment, the micromechanical oscillator is formed by fabricating a mushroom shaped silicon oscillator (235) supported by a substrate (210) via a pillar (120). The laser beam is focused on a periphery of the mushroom shaped silicon oscillator to modify the surface of the mushroom shaped silicon oscillator. In a further embodiment, the mushroom shaped oscillator is a silicon disk formed on a sacrificial layer. Portions of the sacrificial layer are removed to free the periphery of the disk and leave a supporting pillar at the center of the disk. In further embodiments, different type resonators may be used. | ||||||
| 133 | A METHOD FOR CONVERTING ELECTRIC SIGNALS AND A CONVERTER THEREFOR | PCT/RU0100361 | 2001-09-03 | WO0227948A2 | 2002-04-04 | ZAITSEV GEORGY MIKHAILOVICH |
| The invention relates to signal conversion devices to be used for the receiving radio devices. The attained technical result is the detection and conversion of signals in an electrical two-terminal device, a data loss level being minimal. A converting element is supplied with input signals, interaction of the fields of said signals in the converting element material is provided, which interaction is accompanied with the energy interchange resulting in appearance of the efficient electromotive force, and extracted is the converted signals complying with the following ration U'(t) = - gamma DOLLAR verbarRx { ELEMENT Ui(t)* DOLLAR verbar U0 (t) DOLLAR verbar +(t) U0 (t)* ELEMENT Ui(t)} where U'(t) is the efficient electromotive force in the converting element, Rx is Hall coefficient of the converting element conductive material (C/m<3>); l is length of the converting element along the current direction, (m); X0 is the least one of linear dimensions of the converting element cross-section that is perpendicular to direction of the current flowing therein, (m) gamma = tau * epsilon 0; epsilon 0 is electric constant, epsilon 0 SIMILAR 10<-11> C/V*m, tau is dimensionless factor that represents a degree of interrelationship of the fields in a conductive medium; ELEMENT Ui(t), where I=l... n is the combined voltage of the input convertible signals; Uo(t) is voltage of the input converting signal; at that, the ration between the physical parameters and geometric parameters of the converting element and the sum of voltages of the input signals is selected with regard to the conditions 2 gamma DOLLAR verbar Rx DOLLAR verbarU/X0 l >/= 1, where U is sum of voltages of the input signals. | ||||||
| 134 | METHOD AND DEVICE FOR THE DETECTION OF SIMULTANEOUS DUAL TRANSMISSION OF AM SIGNALS | PCT/EP2008003201 | 2008-04-21 | WO2008138453A3 | 2009-01-29 | LIPP FRIEDRICH |
| Disclosed is a device that detects the presence of several amplitude-modulated high-frequency signals in a sum signal when carrier frequencies are closely adjacent. The sum signal is phase-demodulated by a phase demodulator (156) and is Fourier-transformed by a Fourier transformation unit (157). Based on the Fourier transformation, an evaluation unit (155) determines whether several carrier frequencies are present. | ||||||
| 135 | SHELL TYPE ACTUATOR | PCT/US2004027162 | 2004-08-20 | WO2005020434A3 | 2005-05-06 | ZALALUTDINOV MAXIM; REICHENBACH ROBERT B; AUBIN KEITH; HOUSTON BRIAN H; PARPIA JEEVAK M; CRAIGHEAD HAROLD G |
| A micromechanical resonator (400, 1125) is formed on a substrate (120). The resonator has a partial spherical shell (110) clamped on an outside portion of the shell to the substrate. In other embodiments, a flat disc or other shape may be used. Movement is induced in a selected portion of the disc, inducing easily detectable out-of-plane motion. A laser (1110) is used in one embodiment to heat the selected portion of the disc and induce the motion. The motion may be detected by capacitive or interferometric techniques. | ||||||
| 136 | PHASE SECTOR BASED RF SIGNAL DECIMATION | EP13844820 | 2013-09-27 | EP2907240A4 | 2017-02-22 | NIENABER DAVID |
| Values representative of modulation signal components are extracted from a modulated signal. The modulated signal contains a modulation signal. A local clock signal is developed which correlates in time to the modulated signal and has a plurality of non-overlapping phase sectors per cycle. The modulated signal is accumulated into an accumulated value, separately for at least one phase sector of one cycle of the local clock signal. Each accumulated value is representative of a modulation signal component. The modulated signal accumulated is of an amount representative of the mathematical integral of the modulated signal during each phase sector of the local clock over which the modulated signal is accumulated. | ||||||
| 137 | DEMODULATION DEVICE, AND DEMODULATION INTEGRATED CIRCUIT AND MODULATION AND DEMODULATION INTEGRATED CIRCUIT USING SAME | EP12873391 | 2012-12-07 | EP2833546A4 | 2016-01-20 | PARK SEUNG YOUNG; KIM SANG IL |
| 138 | INTERLEAVED PHASE SECTOR BASED RF SIGNAL DECIMATION | EP13845529.0 | 2013-10-14 | EP2909941A1 | 2015-08-26 | Nienaber, David |
| Values representative of modulation signal components are extracted from a modulated signal. The modulated signal contains a modulation signal. A local clock signal is developed which correlates in time to the modulated signal and has a plurality of non-overlapping phase sectors per cycle. The modulated signal is accumulated into an accumulated value, separately for at least one phase sector of one cycle of the local clock signal. Each accumulated value is representative of a modulation signal component. The modulated signal accumulated is of an amount representative of the mathematical integral of the modulated signal during each phase sector of the local clock over which the modulated signal is accumulated. | ||||||
| 139 | AMPLIFIER CIRCUIT, ANTENNA MODULE AND WIRELESS COMMUNICATION APPARATUS | EP13836839.4 | 2013-09-11 | EP2883309A1 | 2015-06-17 | TSUJI, Masaaki; KAWAHATA, Kohji; TSUKAMOTO, Nobunari; ITOH, Naohiro |
| An amplifier circuit that amplifies a carrier wave that a transmitting and receiving part has received, and includes a superimposition wave generation part that generates a superimposition wave to be superimposed onto the carrier wave; an amplifying part that adds the carrier wave and the superimposition wave to obtain an amplified carrier wave and outputs the amplified carrier wave; and an amplitude detection part that detects, based on a change in an amplitude value of the carrier wave, that the carrier wave is a predetermined carrier wave that carries a predetermined communication signal. The amplifier circuit outputs the amplified carrier wave when having detected the predetermined carrier wave. | ||||||
| 140 | DEMODULATION DEVICE, AND DEMODULATION INTEGRATED CIRCUIT AND MODULATION AND DEMODULATION INTEGRATED CIRCUIT USING SAME | EP12873391.2 | 2012-12-07 | EP2833546A1 | 2015-02-04 | PARK, Seung Young; KIM, Sang Il |
A demodulation device according to the present invention includes a spin device configured to output an oscillation signal; a phase control unit configured to assign a predetermined phase locking characteristic to the spin device, thereby causing the oscillation signal to be tuned to a modulation signal that is input to the spin device; and a detector configured to demodulate the oscillation signal that is output by the spin device and tuned to the modulation signal, thereby restoring information carried on the oscillation signal. |
||||||
QQ群二维码
意见反馈
意见反馈