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Class Information
Number: 333/175
Name: Wave transmission lines and networks > Coupling networks > Frequency domain filters utilizing only lumped parameters > Resonant, discrete frequency selective type
Description: Subject matter which include resonant series and/or parallel inductance and capacity networks which offer a low impedance path to energy of a particular frequency or of a plurality of separate discrete frequencies and/or offer a high impedance path to energy of a particular frequency or of a plurality of discrete frequencies.


Sub-classes under this class:

Class Number Class Name Patents
333/176 Including specific frequency rejection means 157


Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
7609131 Coupling filter device with specific coupling coefficient Oct. 27, 2009
7592882 Dual bandstop filter with enhanced upper passband response Sep. 22, 2009
7592883 Dual bandstop filter with enhanced upper passband response Sep. 22, 2009
7586385 Method and apparatus for varying an impedance Sep. 8, 2009
7554424 Electronic component and method of making Jun. 30, 2009
7548138 Compact integration of LC resonators Jun. 16, 2009
7535321 Method and apparatus for a printed circuit board (PCB) embedded filter May. 19, 2009
7522017 High-Q integrated RF filters Apr. 21, 2009
7511596 Dual bandpass filter having serial configuration of coupled-line filters Mar. 31, 2009
7508284 Hybrid low pass diplex filter Mar. 24, 2009
7508285 Band-pass filter circuit Mar. 24, 2009
7501915 High frequency module Mar. 10, 2009
7492243 Planar circuit, high-frequency circuit device, and transmission and reception apparatus Feb. 17, 2009
7468642 Multi band pass filters Dec. 23, 2008
7443268 Bandpass filter within a multilayered low temperature co-fired ceramic substrate Oct. 28, 2008
7436274 Band-pass filter Oct. 14, 2008
7418251 Compact radio frequency harmonic filter using integrated passive device technology Aug. 26, 2008
7385465 Switchable dual-band filter Jun. 10, 2008
7348866 Compact printed filters with self-connected LC resonators Mar. 25, 2008
7345558 Circuit device Mar. 18, 2008
7332984 Electronic signal filter including solderless ground clip having surge protection and shielding features Feb. 19, 2008
7327207 Lamination type electronic component Feb. 5, 2008
7323951 Casing for CATV filter Jan. 29, 2008
7321284 Miniature thin-film bandpass filter Jan. 22, 2008
7268645 Integrated resonator structure and methods for its manufacture and use Sep. 11, 2007
7262674 Bandpass filter having first and second serially coupled collection of filter components for providing upper and lower rejection notches Aug. 28, 2007
7259639 Inductor topologies and decoupling structures for filters used in broadband applications, and design methodology thereof Aug. 21, 2007
7245194 Resonator and dielectric filter Jul. 17, 2007
7234234 Method of manufacturing bandpass filters for GHz bands Jun. 26, 2007
7183880 Discrete inductor bank and LC filter Feb. 27, 2007
7145415 Electrically tunable filters with dielectric varactors Dec. 5, 2006
7138872 Power amplifier device Nov. 21, 2006
7126443 Increasing performance of planar inductors used in broadband applications Oct. 24, 2006
7119635 Electronic component Oct. 10, 2006
7113588 Input-output balanced filter Sep. 26, 2006
7109829 Filter circuit and laminate filter Sep. 19, 2006
7106149 Switchable tuneable bandpass filter with optimized frequency response Sep. 12, 2006
7088202 Methods and apparatus for an improved discrete LC filter Aug. 8, 2006
7075389 Method and apparatus for achieving broadband matching of narrow-band resonator filter impedances to loads and sources Jul. 11, 2006
7034636 Tunable filters having variable bandwidth and variable delay Apr. 25, 2006
7012484 Filter using multilayer ceramic technology and structure thereof Mar. 14, 2006
7005943 Filter for segmenting power lines for communications Feb. 28, 2006
6995632 Band pass filter for GHz-band Feb. 7, 2006
6982614 Multi-mode filter Jan. 3, 2006
6967544 Miniature LTCC 2-way power splitter Nov. 22, 2005
6949989 Electronic signal filter including solderless ground clip having surge protection and shielding features Sep. 27, 2005
6940365 Methods and apparatus for an improved discrete LC filter Sep. 6, 2005
6933806 Electrical signal filter with solderless ground connection Aug. 23, 2005
6927645 Electronic component structured to compensate for cable losses and method of production Aug. 9, 2005
6914497 Parallel multistage band-pass filter Jul. 5, 2005

1 2 3 4 5 6


 
 
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