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Class Information
Number: 333/116
Name: Wave transmission lines and networks > Plural channel systems > Having branched circuits > Using directional coupler > Having tem lines > Using stripline
Description: Subject matter wherein each of the first and second transmission lines have a planar center conductor and a planar ground plate.










Patents under this class:
1 2 3 4 5 6 7 8

Patent Number Title Of Patent Date Issued
5929729 Printed lumped element stripline circuit ground-signal-ground structure Jul. 27, 1999
5907266 Alignment tolerant overlay directional coupler May. 25, 1999
5905415 Distributed constant line coupling with a gap domain May. 18, 1999
5890060 Micro-wave mixing circuit and down-flow converter using the same Mar. 30, 1999
5872811 Differential line driver Feb. 16, 1999
5841328 Directional coupler Nov. 24, 1998
5838527 Electrical surge protection apparatus Nov. 17, 1998
5834991 Thick film lange coupler Nov. 10, 1998
5825260 Directional coupler for the high-frequency range Oct. 20, 1998
5818308 Coupled line element Oct. 6, 1998
5818307 Directional coupler having inductor crossing microstrip transmission line Oct. 6, 1998
5777527 Method and apparatus for coupling a differential signal to an unbalanced port Jul. 7, 1998
5774026 High frequency impedance transformer Jun. 30, 1998
5767753 Multi-layered bi-directional coupler utilizing a segmented coupling structure Jun. 16, 1998
5754951 Microwave mixing circuit and a down converter comprising it May. 19, 1998
5748056 Compact 90.degree. monolithic GaAs coupler for wireless applications May. 5, 1998
5745017 Thick film construct for quadrature translation of RF signals Apr. 28, 1998
5742210 Narrow-band overcoupled directional coupler in multilayer package Apr. 21, 1998
5689217 Directional coupler and method of forming same Nov. 18, 1997
5675300 Top exit coupler Oct. 7, 1997
5666090 High-frequency coupler Sep. 9, 1997
5650793 Centered longitudinal series/series coupling slot for coupling energy between a boxed stripline and a crossed rectangular waveguide and antenna array employing same Jul. 22, 1997
5633613 Modulator-coupled transmission structure and method May. 27, 1997
5634208 Multilayer transmission line using ground metal with slit, and hybrid using the transmission line May. 27, 1997
5629654 Coplanar waveguide coupler May. 13, 1997
5625169 Electronic parts with an electrode pattern between two dielectric substrates Apr. 29, 1997
5625328 Stripline directional coupler tolerant of substrate variations Apr. 29, 1997
5584067 Dual traveling wave resonator filter and method Dec. 10, 1996
5576669 Multi-layered bi-directional coupler Nov. 19, 1996
5570069 Broadband directional coupler Oct. 29, 1996
5557245 Strip line-type high-frequency element Sep. 17, 1996
5539362 Surface mounted directional coupler Jul. 23, 1996
5532643 Manufacturably improved asymmetric stripline enhanced aperture coupler Jul. 2, 1996
5523725 Signal-to-noise enhancer Jun. 4, 1996
5521563 Microwave hybrid coupler May. 28, 1996
5499001 Cavity matched hybrid coupler Mar. 12, 1996
5490325 Guarded printed circuit board islands Feb. 13, 1996
5486798 Multiplanar hybrid coupler Jan. 23, 1996
5487184 Offset transmission line coupler for radio frequency signal amplifiers Jan. 23, 1996
5455545 Compact low-loss microwave balun Oct. 3, 1995
5448771 Embedded transmission line coupler for radio frequency signal amplifiers Sep. 5, 1995
5446425 Floating potential conductor coupled quarter-wavelength coupled line type directional coupler comprising cut portion formed in ground plane conductor Aug. 29, 1995
5424694 Miniature directional coupler Jun. 13, 1995
5410179 Microwave component having tailored operating characteristics and method of tailoring Apr. 25, 1995
5382925 Hybrid coupler Jan. 17, 1995
5376904 Directional coupler for differentially driven twisted line Dec. 27, 1994
5373266 Microstrip directional coupler Dec. 13, 1994
5373299 Low-profile wideband mode forming network Dec. 13, 1994
5369379 Chip type directional coupler comprising a laminated structure Nov. 29, 1994
5369381 Slow-wave transmission line of the microstrip type and circuit including such a line Nov. 29, 1994

1 2 3 4 5 6 7 8










 
 
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