51
Brian Kean, Jennifer Larsen, David William Cully, James L Collette: Radio-frequency-device personalization. First Data Coporation, Townsend and Townsend and Crew, January 27, 2009: US07482908 (2 worldwide citation)

Radio-frequency devices that have internal radio-frequency chips are personalized. A radio-frequency device is inserted into a package. An identifier is read electromagnetically from the radio-frequency chip with a radio-frequency transceiver while the radio-frequency device is within the package. P ...


52
Sek Kin Neng, Yungping Hsu, Tsunglun Yu, Ming Ta Lin, Naveen Kumar Arani: Apparatus and methods for detection of interface in radio-frequency devices. Marvell International, May 15, 2012: US08180308 (2 worldwide citation)

A communication apparatus includes a radio frequency (RF) apparatus. The RF apparatus includes an amplifier, and a signal detection circuit. The amplifier receives RF signals and amplifies those signals. The amplifier has an adjustable gain value. The signal detection circuit detects whether a recei ...


53
Sanjay K Verma: Wirelessly tethered device tracking. Apple, Fish & Richardson P C, July 25, 2017: US09715815 (2 worldwide citation)

Systems, methods and computer-readable mediums are disclosed for wirelessly tethered device tracking. In some implementations, a method comprises: determining, by a first wireless device, an estimated distance between the first wireless device and a second wireless device, the second wireless device ...


54
Kim Jin Dong, Waldie William T: Surface-mount dielectric filter.. Motorola, July 31, 1991: GB2240431-A (2 worldwide citation)

A filter assembly (100) includes a ceramic block filter (102) and shielding bracket (132) which surface mounts to a printed circuit board (152) for interconnecting to radio frequency devices, such as a radio transceiver. The bracket (132) is soldered to the filter (102) and includes two openings (13 ...


55
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 (2 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 ...


56
Jenkins Charles Roderick, Johnson Ashley Bernard, Barrow Harry, Barrett Michael Paul: Messenger vessels to indicate downhole conditions. Schlumberger Holdings, July 18, 2007: GB2434165-A (2 worldwide citation)

Messenger vessels 60 are programmed or imprinted with signal information and then positioned releasably in a downhole location. A sensing and releasing system 22 senses the occurrence of a downhole condition and releases the vessels to be entrained in the flow of production or drilling fluid and car ...


57
Bleckmann Frederick, Bleckmann Gilbert A: Method and apparatus for production of rf labels. Pittsfield Weaving Co, February 25, 2004: EP1390926-A1 (2 worldwide citation)

The present invention includes a method for producing individual folded labels incorporating a radio frequency device, the method comprising the steps of providing a ribbon of labels containing a woven logo or text. A carrier strip with a plurality of radio frequency devices spaced thereon is provid ...


58
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 (1 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 ...


59
Prakash Gopalakrishnan, Alisa Yurovsky: Optimizing circuit layouts by configuring rooms for placing devices. Cadence Design Systems, Schwegman Lundberg & Woessner P A, September 3, 2013: US08527928 (1 worldwide citation)

A computer-readable medium stores a specification for a circuit layout. The specification includes: a configuration of rooms for placing devices, one or more room constraints for the configuration of rooms, one or more groups of devices for the rooms, and one or more device constraints for devices i ...


60
Ian J Forster: Reflective communication using radio-frequency devices. Christensen O Connor Johnson Kindness PLLC, December 8, 2009: US07630684 (1 worldwide citation)

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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