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Class Information
Number: 333/135
Name: Wave transmission lines and networks > Plural channel systems > Having branched circuits > For providing frequency separation > Utilizing long line element > Including waveguide element
Description: Subject matter wherein the long line element is of the type having a magnetic or electrical component extending in the direction of propagation.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
6081170 Dual frequency primary radiator Jun. 27, 2000
6060961 Co-polarized diplexer May. 9, 2000
6046702 Probe coupled, multi-band combiner/divider Apr. 4, 2000
6031434 Coaxially configured OMT-multiplexer assembly Feb. 29, 2000
6018276 Waveguide input apparatus of two orthogonally polarized waves including two probes attached to a common board Jan. 25, 2000
6008706 Wide band contiguous multiplexer having a contiguous diplexer Dec. 28, 1999
6002307 Dielectric filter and dielectric duplexer Dec. 14, 1999
5977844 Dual polarization waveguide probe system Nov. 2, 1999
5959508 Electromagnetic wave combining device and television broadcast transmission system using same Sep. 28, 1999
5923229 Simultaneous polarization and frequency filtering of transmitter and receiver signals in single antenna systems Jul. 13, 1999
5874923 Feeder horn, intended particularly for two-way satellite communications equipment Feb. 23, 1999
5784033 Plural frequency antenna feed Jul. 21, 1998
5774030 Parallel axis cylindrical microwave filter Jun. 30, 1998
5774193 Digital television (HDTV) and analog television (NTSC) broadcast systems combined for simultaneous broadcast Jun. 30, 1998
5656980 Multiple output RF filter and waveguide Aug. 12, 1997
5635944 Multi-band antenna feed with switchably shared I/O port Jun. 3, 1997
5617108 Simplified tracking antenna Apr. 1, 1997
5604747 Modular contiguous output multiplexer Feb. 18, 1997
5578972 Transmit/receive isolation assembly for a very small aperture satellite terminal Nov. 26, 1996
5578973 Waveguide multiplexer/demultiplexer Nov. 26, 1996
5546057 Antenna/filter combiner Aug. 13, 1996
5534881 Microwave filter assembly having a nonsymmetrical waveguide and an antenna Jul. 9, 1996
5471177 Octave band gap diplexer Nov. 28, 1995
5428322 Microwave waveguide multiplexer Jun. 27, 1995
5428323 Device for compensating for temperature-dependent volume changes in a waveguide Jun. 27, 1995
5349316 Dual bandpass microwave filter Sep. 20, 1994
5335363 Signal interference reduction device and method Aug. 2, 1994
5327245 Method and apparatus for combining adjacent channel television signals Jul. 5, 1994
5309128 Device for the filtering of electromagnetic waves propagating in a rotational symmetrical waveguide, with inserted rectangular filtering waveguide sections May. 3, 1994
5276456 Antenna feed with selectable relative polarization Jan. 4, 1994
5274344 Branch separating filter Dec. 28, 1993
5266911 Multiplexing system for plural channels of electromagnetic signals Nov. 30, 1993
5254963 Microwave filter with a wide spurious-free band-stop response Oct. 19, 1993
5255003 Multiple-frequency microwave feed assembly Oct. 19, 1993
5243306 Separate type branching filter Sep. 7, 1993
5235297 Directional coupling manifold multiplexer apparatus and method Aug. 10, 1993
5206612 System for combining high frequency signals Apr. 27, 1993
5109232 Dual frequency antenna feed with apertured channel Apr. 28, 1992
5107274 Collocated non-interfering dual frequency microwave feed assembly Apr. 21, 1992
5103237 Dual band signal receiver Apr. 7, 1992
5055852 Diplexing radiating element Oct. 8, 1991
5005023 Dual band integrated LNB feedhorn system Apr. 2, 1991
5003321 Dual frequency feed Mar. 26, 1991
5001444 Two-frequency radiating device Mar. 19, 1991
4998113 Nested horn radiator assembly Mar. 5, 1991
4982171 Coaxial-waveguide phase shifter Jan. 1, 1991
4970480 Microwave diplexer Nov. 13, 1990
4968957 Transmit and receive diplexer for circular polarization Nov. 6, 1990
4922214 Apparatus to couple laser radiation and microwave energy using a microwave waveguide May. 1, 1990
4920351 Diplexer for orthogonally polarized transmit/receive signalling on common frequency Apr. 24, 1990

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