1
David Siu: Quadruple mode filter. Com Dev, Daryl W Schnurr, December 20, 1988: US04792771 (135 worldwide citation)

A quadruple mode bandpass filter has at least one cavity resonating in four independent orthogonal modes simultaneously. Preferably, the filter has two cavities, one cavity being a quadruple mode cavity and the remaining cavity being either a single mode, dual mode, triple mode or quadruple mode cav ...


2
Robert Peach, Nicholas Svensson, Thai Vo: Scattering parameter calibration system and method. COM DEV, Jones Day Reavis & Pogue, October 9, 2001: US06300775 (126 worldwide citation)

A system and method of calibrating an S parameter measurement instrument (such as a vector network analyzer) in which the number of calibrations required to fully characterize the error model of an n-port system is n/2 calibrations for an even number of ports and (n+1)/2 calibrations for an odd ...


3
Vytas Kezys: Content-based adaptive parasitic array antenna system. COM DEV International, Jones Day Reavis & Pogue, December 10, 2002: US06492942 (111 worldwide citation)

An adaptive parasitic array antenna system having properties of directive gain, self-pointing and interference rejection is provided including an adaptive parasitic array antenna comprising at least one active element and one or more parasitic elements coupled to controlled impedances (CI). The syst ...


4
Richard J Cameron, Wai Cheung Tang, Van Dokas: Folded single mode dielectric resonator filter with cross couplings between non-sequential adjacent resonators and cross diagonal couplings between non-sequential contiguous resonators. COM DEV, Daryl W Schnurr, March 4, 1997: US05608363 (66 worldwide citation)

The invention relates to a single mode multi-cavity microwave filter that includes a housing formed with a plurality of walls which define at least two rows of side-by-side dielectric loaded cavities, wherein sequential cavities are coupled to one another via slots formed in the walls therebetween a ...


5
Arvind Swarup: Printed lumped element stripline circuit ground-signal-ground structure. COM DEV, Jones Day Reavis & Pogue, July 27, 1999: US05929729 (54 worldwide citation)

A novel circuit packaging structure including a combination of printed lumped elements within a multi-layer stripline architecture is provided and methods of making the same. The lumped elements are provided by printing the individual passive elements, including interdigital capacitors and spiral in ...


6
Frank A Hegmann, Steven H Moffat, John S Preston, Darcy G Poulin: Voltage controlled superconducting microwave switch and method of operation thereof. Com Dev, Daryl W Schnurr, November 24, 1998: US05841342 (44 worldwide citation)

A low insertion loss, wide bandwidth, microwave switch has a superconducting transmission line that can reversibly go from a superconducting state to a normal state by the application of a DC voltage. When in the normal state, the switch is "off" and microwave signals are attenuated. To reduce the v ...


7
Val O Donovan, Gary Beauchamp, Robert Peach: Intersatellite communications systems. Com Dev, Jones Day Reavis & Pogue, October 20, 1998: US05825325 (37 worldwide citation)

An improved multi-beam bent-pipe communications satellite system and method includes a subchannel switching processor for extracting and switching subchannels of information to and from a plurality of uplink and downlink beams and an intersatellite link for routing certain of the extracted subchanne ...


8
Ken Lazaris Brunner, Gary Beauchamp, Bharat Tailor: Regional programming in a direct broadcast satellite. COM DEV, Jones Day Reavis & Pogue, April 4, 2000: US06047162 (34 worldwide citation)

A multi-beam DBS satellite system capable of providing spectrally efficient regional programming includes at least one DBS satellite having a repeater connected between multiple uplink antennas and multiple downlink antennas. The repeater has a switching processor and a formatting processor. The swi ...


9
Robert S K Tong: Waveguide manifold coupled multiplexer with triple mode filters. Com Dev, Daryl W Schnurr, September 30, 1986: US04614920 (31 worldwide citation)

A multiplexer has a plurality of bandpass filters coupled through E-plane or H-plane T-junctions to a waveguide manifold. Where the multiplexer has four channels and each filter is a six-pole filter, two triple mode cavities make up each filter. Where each filter is a five-pole filter, one triple ca ...


10
Wai Cheung Tang: Cascade waveguide triple-mode filters useable as a group delay equalizer. Com Dev, Daryl W Schnurr, December 16, 1986: US04630009 (29 worldwide citation)

A bandpass filter has a plurality of cascade wave-guide cavities each resonating in three independent orthogonal modes. The cavities can be cylindrical or have a square cross-section. Where the cavities are circular, each cavity resonates in TE.sub.111 or TE.sub.010 modes simultaneously. Where the c ...