41
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 (3 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 ...


42
William B Baringer: Hybrid piezoelectric device / radio frequency antenna. Fitbit, Weaver Austin Villeneuve & Sampson, November 24, 2015: US09196964 (3 worldwide citation)

A hybrid antenna including a piezoelectric device and an RF radiator. The hybrid antenna is capable of providing both RF and piezoelectric device functionality, e.g., radio frequency transmission/reception capabilities for radio frequency devices as well as sound-producing and/or energy-scavenging f ...


43
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 ...


44
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 ...


45
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 ...


46
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 ...


47
Eric J Salyers, Shawn H Gallagher, Barry R Birdwell: Managed access system that provides selective communications and registration of mobile wireless devices. HARRIS CORPORATION, Allen Dyer Doppelt & Gilchrist P A, June 13, 2017: US09681360 (2 worldwide citation)

A managed access system for mobile wireless devices (MWDs) in a facility that is geographically within a wireless communications network includes a plurality of antennas at the facility. Radio equipment is coupled to the antennas. A management access controller cooperates with the radio equipment to ...


48
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 ...


49
Mark Elsom Cook, Steve P Morris: Short range RF monitoring system. Bigger Than The Wheel, Finnegan Henderson Farabow Garrett & Dunner, January 6, 2015: US08929820 (2 worldwide citation)

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 ...


50
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 ...