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Class Information
Number: 333/202
Name: Wave transmission lines and networks > Coupling networks > Wave filters including long line elements
Description: Subject matter including elements having distributed parameters and permitting free transmission of electric waves of a single frequency or band of frequencies (which may include zero frequency) while attenuating substantially electric waves having other frequencies, or attenuating substantially electric waves of a single frequency or band of frequencies (which may include zero frequency) while permitting free transmission of electric waves having other frequencies, and systems within the class definition which include such networks.

Sub-classes under this class:

Class Number Class Name Patents
333/206 Coaxial 552
333/203 Digital structure 193
333/204 Stripline or microstrip 886
333/208 Waveguide 248

Patents under this class:

Patent Number Title Of Patent Date Issued
8704614 Cavity filter having surge suppress means Apr. 22, 2014
8704613 Cavity filter having feedback arrangement Apr. 22, 2014
8680943 DCS/WCDMA dual frequency synthesizer and a general dual frequency synthesizer Mar. 25, 2014
8669833 Three-dimensional metamaterial having function of allowing and inhibiting propagation of electromagnetic waves Mar. 11, 2014
8665039 Dual mode cavity filter assembly operating in a TE22N mode Mar. 4, 2014
8648674 Filter circuit, and wireless communication module and wireless communication device that uses the same Feb. 11, 2014
8624369 Balance filter packaging chip having balun mounted therein and manufacturing method thereof Jan. 7, 2014
8618894 Multi-mode resonant filter Dec. 31, 2013
8598970 Dielectric resonator having a mounting flange attached at the bottom end of the resonator for thermal dissipation Dec. 3, 2013
8570119 Ultra wide pass-band, absorptive band-reject filter Oct. 29, 2013
8547189 Electronic component Oct. 1, 2013
8537053 Left handed body, wave guide device and antenna using this body, manufacturing method for this body Sep. 17, 2013
8525618 Metamaterial having a negative dielectric constant and a negative magnetic permeability Sep. 3, 2013
8441329 Input/output system and devices for use with superconducting devices May. 14, 2013
8436699 Semiconductor device and communication apparatus May. 7, 2013
8432706 Printed circuit board and electro application Apr. 30, 2013
8410873 Dielectric resonator having a dielectric resonant element with two oppositely located notches for EH mode coupling Apr. 2, 2013
8410870 Filter Apr. 2, 2013
8393071 Method for manufacturing an oscillator device Mar. 12, 2013
RE43957 High-frequency module including connection terminals arranged at a small pitch Feb. 5, 2013
8367941 Filter, branching filter, communication module, and communication equipment Feb. 5, 2013
8354975 Electromagnetic band gap element, and antenna and filter using the same Jan. 15, 2013
8340594 Thermally optimized microwave channel multiplexing device and signals repetition device comprising at least one such multiplexing device Dec. 25, 2012
8319572 Electromagnetic bandgap structure and printed circuit board Nov. 27, 2012
8299874 Rolled resonant element Oct. 30, 2012
8294532 Duplex filter comprised of dielectric cores having at least one wall extending above a top surface thereof for isolating through hole resonators Oct. 23, 2012
8289108 Thermally efficient dielectric resonator support Oct. 16, 2012
8269580 Communication module Sep. 18, 2012
8269579 RF monoblock filter having an outwardly extending wall for mounting a lid filter thereon Sep. 18, 2012
8248187 Filter Aug. 21, 2012
8237516 Enhanced substrate using metamaterials Aug. 7, 2012
8224409 Three-dimensional filter with movable superconducting film for tuning the filter Jul. 17, 2012
8217737 Coupler for tuning resonant cavities Jul. 10, 2012
8207801 Ferrite filter comprising aperture-coupled fin lines Jun. 26, 2012
8188813 Circuit board microwave filters May. 29, 2012
8183960 Trimming of waveguide filters May. 22, 2012
8179304 Direct-current blocking circuit, hybrid circuit device, transmitter, receiver, transmitter-receiver, and radar device May. 15, 2012
8164006 Electromagnetic bandgap structure and printed circuit board Apr. 24, 2012
8159314 Actively tuned filter Apr. 17, 2012
8125290 Apparatus for silencing electromagnetic noise Feb. 28, 2012
8111115 Method of operation and construction of dual-mode filters, dual band filters, and diplexer/multiplexer devices using half cut dielectric resonators Feb. 7, 2012
8102219 Electromagnetic bandgap structure and printed circuit board Jan. 24, 2012
8098116 LC composite electronic component Jan. 17, 2012
8077000 Electromagnetic bandgap structure and printed circuit board Dec. 13, 2011
8072298 Radio frequency filter Dec. 6, 2011
8072297 Apparatus and method for improving channel filter selectivity and performance using voltage variable impedance elements Dec. 6, 2011
8063723 Filter apparatus and method Nov. 22, 2011
8040203 Filter circuit and radio communication device Oct. 18, 2011
8031036 Dielectric resonator and filter with low permittivity material Oct. 4, 2011
8013693 Meta-material for use in a base station of a wireless communication system Sep. 6, 2011

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