1
Marc Lanoiselee
Marc Lanoiselee: Transmission system with suppressed carrier signal amplitude modulation preserving the polarity of the transmitted signal, and corresponding transmitter and receiver. L Etat Francais, Telediffusion de France, Merchant Gould Smith Edell Welter & Schmidt, December 31, 1991: US05077542 (15 worldwide citation)

A system of transmission with amplitude modulation for the transmission of signals of all types, analog and/or digital, requiring high performance characteristics with respect to the noise induced by the transmission channel, comprising, at transmission, means for the suppressed carrier amplitude mo ...


2
Marc Lanoiselee
Lanoiselee Marc: Amplitude modulation transmission system with suppressed carrier maintaining the polarity of the transmitted signal.. France Etat, Telediffusion Fse, June 19, 1991: EP0433198-A1 (1 worldwide citation)

The field of the invention is that of the transmission of signals of all types, analog and/or digital. More precisely, the invention relates to amplitude modulation transmission systems demanding high performance in regard to noise induced by the transmission channel. The transmission system of the ...


3
John C Gord: Low power current to frequency converter circuit for use in implantable sensors. Alfred E Mann Foundation, Alfred E Mann Foundation, June 29, 1999: US05917346 (405 worldwide citation)

A low power current-to-frequency converter circuit provides an output frequency signal F.sub.OUT having a frequency that varies as a function of a low level analog input current signal. The analog input current signal is typically generated by an implantable sensor element, designed to sense a parti ...


4
Brian G Agee, Matthew C Bromberg: Method and apparatus for optimization of wireless multipoint electromagnetic communication networks. George S Cole Esq, July 24, 2007: US07248841 (265 worldwide citation)

Exploiting the substantive reciprocity of internode channel responses through dynamic, adaptive modification of receive and transmit weights, enables locally enabled global optimization of a multipoint, wireless electromagnetic communications network of communication nodes. Each diversity-channel-ca ...


5
Michael H Perrott, Charles G Sodini, Anantha P Chandrakasan: Digital compensation for wideband modulation of a phase locked loop frequency synthesizer. Massachusetts Institute of Technology, Theresa A Lober, December 28, 1999: US06008703 (245 worldwide citation)

A digital compensation filtering technique is provided that enables indirect phase locked loop modulation with a digital modulation data stream having a bandwidth that exceeds, perhaps by an order of magnitude, the bandwidth characteristic of the phase locked loop. A modulation data receiver is prov ...


6
Leonard Schuchman, Ronald Bruno, Charles Moses: Cellular telephone with voice-in-data modem. Stanford Telecommunications, Jim Zegeer Esq, March 10, 1998: US05726893 (152 worldwide citation)

A GPS system has a plurality of satellites transmitting time and location data over radio frequency signals which enable a mobile GPS receiver on the ground to determine its position, includes a source of satellite data message block containing the ephemeris and time modes of the GPS satellites whic ...


7
Hilmer I Swanson: Amplitude modulation using digitally selected carrier amplifiers. Harris Corporation, Yount & Tarolli, April 1, 1986: US04580111 (147 worldwide citation)

An amplitude modulator (10) is disclosed which generates an amplitude modulated carrier signal by selectively combining varying numbers of other carrier signals. A circuit (20) is included which provides plural carrier signals of like frequency and phase where the number of carrier signals being pro ...


8
Earl W McCune Jr, Wendell Sander: Direct digital synthesis of precise, stable angle modulated RF signal. Tropian, Burns Doane Swecker & Mathis, September 14, 1999: US05952895 (145 worldwide citation)

The present invention, generally speaking, provides an RF modulator that allows precise, stable phase shifts to be obtained. The modulator uses a PLL structure including an auxiliary feedforward path used to inject a baseband modulation signal into the PLL at a point past a loop filter of the PLL. A ...


9
Roy Greeff, David K Ovard: Method of communications in a backscatter system, interrogator, and backscatter communications system. Micron Technology, Wells St John Roberts Gregory & Matkin P S, June 13, 2000: US06075973 (144 worldwide citation)

An interrogator for use in a backscatter system, the interrogator comprising an antenna configured to receive a backscatter signal; an IQ downconverter coupled to the antenna and configured to downconvert the backscatter signal to produce I and Q signals; a combiner coupled to the IQ downconverter a ...


10
Bengt Lindoff, H ang kan Bengt Eriksson: Method and apparatus for generating a linearly modulated signal using polar modulation. Telefonaktiebolaget LM Ericsson, Burns Doane Swecker & Mathis L, August 8, 2000: US06101224 (143 worldwide citation)

An apparatus and method generate a linearly modulated signal in a polar modulation system. A signal for transmission is separated into a phase component and an amplitude component, and a carrier signal is modulated with the phase component in a phase modulator, creating a phase distortion. A compens ...



Click the thumbnails below to visualize the patent trend.