51
Vittorio Cavirani, Francesco Trotta, Luca Marcaccioli, Roberto Vincenti Gatti, Franco Manzini, Domenico Di Terlizzi: Radio frequency positioning system for vehicles. Elettric 80 S p A, Tutunjian & Bitetto P C, February 4, 2014: US08643536 (1 worldwide citation)

A positioning system for radio frequency devices includes a two-way radio antenna, for vehicles, having a transmitting and a receiving element. Reference antennas have retro-directive arrays which can shape the signal beams in elevation; polarize transmission and reception signals according to a cir ...


52
Timothy C Kuo, Mansour Keramat, Edward Wai Yeung Liu: In-situ gain calibration of radio frequency devices using thermal noise. NVIDIA Corporation, Cooley, April 23, 2013: US08428194 (1 worldwide citation)

An apparatus for calibrating gain of an radio frequency receiver (“Rx”) is disclosed to provide, among other things, a structure for performing in-situ gain calibration of an RF integrated circuit over time and/or over temperature without removing the RF integrated circuit from its operational confi ...


53
Martinez de Velasco Cortina Fr, Riezler Manfred: Selective metal removal process for metallized retro-reflective and holographic films and radio frequency devices made therewith. Neology, August 9, 2006: EP1688868-A2 (1 worldwide citation)

A method is disclosed of making a radio-frequency (RF) identification device comprising: forming an antenna on a base layer; and mounting a radio frequency (RF) chip on the base layer in electrical communication with the antenna to form an RF transponder; the antenna being formed by selective de-met ...


54
Kuo Timothy C, Liu Edward Wai Yeung, Keramat Mansour: Apparatus and method for in-situ gain calibration of radio frequency devices using thermal noise. Nvidia, November 22, 2006: EP1724953-A2 (1 worldwide citation)

An apparatus for calibrating gain of an radio frequency receiver ("Rx") is disclosed to provide, among other things, a structure for performing in-situ gain calibration of an RF integrated circuit over time and/or over temperature without removing the RF integrated circuit from its operational confi ...


55
Warren Anthony Robert: Improvements in or relating to radio frequency devices. Trak Microwave, May 1, 1968: GB1112304-A (1 worldwide citation)

1,112,304. Valve amplifying and oscillating circuits. TRAK MICROWAVE CORPORATION. 29 June, 1965, No. 27599/65. Headings H3F, H3R and H3W. [Also in Divisions H1 and H2] A radio frequency device having distributed constants for operation with an electron tube having anode 28, control grid 26 and catho ...


56
Hadjichristos Aristotele: Differential to single-ended conversion for radio frequency devices. Qualcomm Incorporated, Hadjichristos Aristotele, MOBARHAN Ramin, March 5, 2009: WO/2009/029721 (1 worldwide citation)

In an exemplary embodiment, a circuit is disclosed comprising a plurality of inputs, each input to receive a radio frequency waveform from a plurality of differential input waveforms having different phases; and an inverter circuit to invert a waveform from the plurality of differential inputs wavef ...


57
Mark Elsom Cook, Steve P Morris: Short range RF monitoring system. Bigger Than The Wheel, Finnegan Henderson Farabow Garrett & Dunner L, October 20, 2015: US09167548

A wireless short range radio-frequency master device adapted to create and maintain a portable private network of wireless short range radio-frequency slave devices wherein the master device is configured to detect and register suitable slave devices for a network, and is capable of determining the ...


58
Chongwu Zhou, Koungmin Ryu, Alexander Badmaev, Chuan Wang: Radio frequency devices based on carbon nanomaterials. University of Southern California, Fish & Richardson P C, October 14, 2014: US08860137

RF transistors are fabricated at complete wafer scale using a nanotube deposition technique capable of forming high-density, uniform semiconducting nanotube thin films at complete wafer scale, and electrical characterization reveals that such devices exhibit gigahertz operation, linearity, and large ...


59
Ian J Forster: Reflective communication using radio-frequency devices. Mineral Lassen, Christensen O Connor Johnson Kindness PLLC, June 28, 2011: US07970353

A reflective communication system allows information from wireless communication devices, such as radio-frequency identification devices (RFID), to be reflectively communicated to a receiver. A transmitter at a known location transmits a communication signal to the wireless communication device. The ...


60
Ian J Forster: Reflective communication using radio-frequency devices. Christensen O Connor Johnson Kindness PLLC, November 30, 2010: US07844221

The present invention relates to a reflective communication system that allows information from wireless communication devices, such as radio-frequency identification devices (RFID), to be reflectively communicated to a receiver in lieu of using a separate communication system. A transmitter transmi ...



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