41
Timothy C Kuo, Mansour Keramat, Edward Wai Yeung Liu: In-situ gain calibration of radio frequency devices using thermal noise. Nvidia Corporation, Cooley, February 21, 2012: US08121221 (3 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 ...


42
Andrew Tye Hunt, Zhiyong Zhao, Yongdong Jiang, Xiaoyan Wang, Kwang Choi: Radio frequency devices with enhanced ground structure. nGimat Co, March 24, 2015: US08988169 (3 worldwide citation)

Tunable radio frequency (RF) devices, such as phase shifters and filters, are formed by depositing thin film layers on a substrate and patterning the thin film layers by various lithography techniques. A thin film metal layer is patterned to form a plurality of capacitors and inductors, leaving at l ...


43
Hecht Kurt, Storch Leonard: Sequenced antenna array for determining where gaming chips with embedded rfid tags are located on a blackjack, poker or other gaming table & for myriad other rfid applications. Cias, Hecht Kurt, Storch Leonard, DeROSA Frank J, April 17, 2008: WO/2008/045075 (3 worldwide citation)

An improved antenna system, method and apparatus for interrogating and locating RFID (Radio Frequency Identification) tags and other RF (Radio Frequency) devices, and various applications therefore and thereof, are disclosed. One embodiment is for reading and locating the physical position of RFID t ...


44
Zvi Or Bach, Deepak C Sekar, Brian Cronquist, Israel Beinglass, Jan Lodewijk de Jong: 3D semiconductor device and structure. MONOLITHIC 3D, Tran & Associates, February 7, 2017: US09564432 (2 worldwide citation)

A semiconductor device, including: a first layer including monocrystalline material and first transistors, the first transistors overlaid by a first isolation layer; a second layer including second transistors and overlaying the first isolation layer, the second transistors including a monocrystalli ...


45
Zvi Or Bach, Brian Cronquist, Israel Beinglass, J L de Jong, Deepak C Sekar, Paul Lim: Method of manufacturing a three dimensional integrated circuit by transfer of a mono-crystalline layer. Monolithic 3D, Tran & Associates, July 18, 2017: US09711407 (2 worldwide citation)

A semiconductor device includes a first mono-crystallized layer including first transistors, and a first metal layer forming at least a portion of connections between the first transistors; and a second layer including second transistors, the second transistors including mono-crystalline material, t ...


46
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 (2 worldwide citation)

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 ...


47
Terry M Schaffner: RF chirp signal propagation delay measurement. Digi International, Fogg & Powers, March 10, 2015: US08976060 (2 worldwide citation)

Distance between two radio frequency devices is estimated by receiving a plurality of spread spectrum chirp signals frequency offset from one another, and evaluating the received plurality of spread spectrum chirp signals for relative phase shifts between the plurality of spread spectrum chirp signa ...


48
Joakim Linde, Aysegul Findikli, Sven Jerlhagen, Ritesh Vishwakarma: Method and apparatus for co-location of two radio frequency devices. Broadcom Corporation, Sterne Kessler Goldstein & Fox P L L C, August 20, 2013: US08515354 (2 worldwide citation)

A method for avoiding signal interference between a first RF circuit and a second RF circuit is provided. The first and second RF circuits are co-located and the first RF circuit is configured to operate in a first frequency range. The second RF circuit is configured to operate in a second frequency ...


49
Joakim Linde, Aysegul Findikli, Sven Jerlhagen, Ritesh Vishwakarma: Method and apparatus for co-location of two radio frequency devices. Broadcom Corporation, Sterne Kessler Goldstein & Fox P L L C, July 24, 2012: US08229364 (2 worldwide citation)

A method for avoiding signal interference between a first RF device and a second RF device is provided. The first and second RF devices are co-located and the first RF device is configured to operate in a first frequency range. The second RF device is configured to operate in a second frequency rang ...


50
Wolfgang Neuberger, Stefan Spaniol: Active endoscopic photodynamic therapy devices; systems and method. CeramOptec, Bolesh J Skutnik, B J Associates, April 1, 2008: US07351242 (2 worldwide citation)

An active endoscopic system is disclosed containing an electromagnetic radiation system located at the distal end of the endoscopic device allowing for variable intensity application of desired wavelengths in the application of PhotoDynamic Therapy (PDT) over a broad area. The power sources are vari ...



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