1
Keith R Manssen, Matthew R Greene, Wayne E Smith, Guillaume Blin: Techniques for improved adaptive impedance matching. Paratek Microwave, Ed Guntin, Guntin Meles & Gust, March 29, 2011: US07917104 (53 worldwide citation)

An embodiment of the present invention provides an apparatus, comprising an RF matching network connected to at least one RF input port and at least one RF output port and including one or more voltage or current controlled variable reactive elements; and wherein the RF matching network is tuned to ...


2
Keith R Manssen: Apparatus and method for identifying a failed subscriber unit in a wireless communication system. Motorola, Kevin D Kaschke, March 2, 1999: US05878209 (47 worldwide citation)

An apparatus and method provides identification of a failed subscriber unit (102) in a wireless communication system (100). In a first embodiment, the subscriber unit (102) performs a self test to detect a failure (302) of at least a portion of the subscriber unit (102). If a failure is detected, a ...


3
Keith R Manssen, Matthew R Greene, Wayne E Smith, Guillaume Blin: Techniques for improved adaptive impedance matching. BlackBerry, Guntin & Gust, Andrew Gust, December 31, 2013: US08620236 (25 worldwide citation)

An embodiment of the present invention provides a method for limiting tuning of a matching network having variable reactive elements coupled to a variable load impedance to at least reduce an undesirable effect caused by an RF signal. Other embodiments are disclosed.


4
Matthew R Greene, Keith R Manssen, Gregory Mendolia: Method and apparatus for tuning a communication device. Blackberry, Guntin Gust, Andrew Gust, November 26, 2013: US08594584 (25 worldwide citation)

A system that incorporates teachings of the present disclosure may include, for example, a tuning system for a communication device having an antenna, where the tuning system includes at least one first tunable element connected with at least one radiating element of the antenna for tuning the anten ...


5
Keith R Manssen, Dan Boire, Matthew R Greene: Method and apparatus for calibrating a communication device. Research In Motion RF, Guntin & Gust, Andrew Gust, June 25, 2013: US08472888 (23 worldwide citation)

A system that incorporates the present disclosure may include, for example, a computer-readable storage medium having computer instructions to perform actual measurements of one or more performance parameters of a communication device according to a subset of tuning states of a tunable matching netw ...


6
Keith R Manssen, Robert K Krolopp: Method for locating variable control channels by a mobile station in a radiotelephone system. Motorola, John G Rauch, September 15, 1998: US05809421 (18 worldwide citation)

A method for locating variable control channels by a mobile station (104) in a radiotelephone system (100) permits the mobile station (104) to quickly find the location of unknown control channels. A locator beacon (300) is transmitted on one or more common locator channels from each base station (1 ...


7
Keith R Manssen, Matthew R Greene, Duane Rabe: Method and apparatus for tuning antennas in a communication device. Research In Motion RF, Guntin & Gust, Andrew Gust, April 30, 2013: US08432234 (17 worldwide citation)

A system that incorporates teachings of the present disclosure may include, for example, a matching network for a communication device having first and second antennas, where the matching network includes a first variable component connectable and a detector. The first variable component can be conn ...


8
Keith R Manssen, Michael F Moutrie: Ceramic block filter with co-fired coupling pins. Motorola, Rolland R Hackbart, April 23, 1991: US05010309 (15 worldwide citation)

A ceramic block filter (100) includes coupling pins (101 and 102) disposed in holes (124 and 125) in corresponding electrodes (121 and 122) for interconnecting the filter to radio frequency devices, such as a radio transceiver. During manufacture of the filter (100), the coupling pins (101 and 102) ...


9
Matthew R Greene, Keith R Manssen: Method and apparatus for tuning a communication device. BlackBerry, Guntin & Gust, Andrew Gust, January 7, 2014: US08626083 (13 worldwide citation)

A system that incorporates teachings of the present disclosure may include, for example, a tuning system for a communication device having an antenna where the tuning system includes at least one first tunable element connected with at least one radiating element of the antenna for tuning the antenn ...


10
Matthew D Mottier, Keith R Manssen: Radiotelephone with easily accessible feature activation. Motorola, Kenneth W Bolvin, Donald C Kordich, July 30, 1996: US05542103 (12 worldwide citation)

The dual function switch of the present invention allows a radiotelephone user to enable or disable a feature of the radiotelephone while a call is being received and before it is answered. Before the call is received and after it is answered, the switch is a volume key. Otherwise, if the key is dep ...



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