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Class Information
Number: 333/112
Name: Wave transmission lines and networks > Plural channel systems > Having branched circuits > Using directional coupler > Having lumped parameters or impedances
Description: Subject matter wherein an impedance element is included which may be considered as concentrated at one point.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8638182 Systems and methods for electrical power multiplication Jan. 28, 2014
8629734 Systems and methods for power smoothing in power distribution Jan. 14, 2014
8618892 Communication device and communication system Dec. 31, 2013
8611845 Enhanced flexibility coupler for RF power detection and control Dec. 17, 2013
8587387 RF directional coupler circuit assembly for matching high frequency cable TV apparatus Nov. 19, 2013
8536956 Directional coupler Sep. 17, 2013
8525614 Coupler Sep. 3, 2013
8476987 Integrated bidirectional coupler Jul. 2, 2013
8476989 Electromagnetic interference filter for automotive electrical systems Jul. 2, 2013
8461938 Directional couplers for use in electronic devices, and methods of use thereof Jun. 11, 2013
8044749 Coupler device Oct. 25, 2011
7884683 Directional coupler in coaxial line technology Feb. 8, 2011
7821353 Directional coupler Oct. 26, 2010
7671698 Wide-band directional coupler Mar. 2, 2010
7667556 Integrated power combiner/splitter Feb. 23, 2010
7646261 Vertical inter-digital coupler Jan. 12, 2010
7623006 Power combiner/splitter Nov. 24, 2009
7605672 Inverted style balun with DC isolated differential ports Oct. 20, 2009
7605673 Transformer for impedance-matching power output of RF amplifier to gas-laser discharge Oct. 20, 2009
7576626 Directional couplers for RF power detection Aug. 18, 2009
7567146 Directional coupler Jul. 28, 2009
7528680 Electrical filter May. 5, 2009
7504907 Multilayer directional coupler Mar. 17, 2009
7477114 3DB coupler Jan. 13, 2009
7446626 Directional couplers for RF power detection Nov. 4, 2008
7309994 Integrated directional bridge Dec. 18, 2007
7248129 Microstrip directional coupler Jul. 24, 2007
7245192 Coupler with edge and broadside coupled sections Jul. 17, 2007
7224244 Line-doubler delay circuit May. 29, 2007
7187250 Coupler, integrated electronic component and electronic device Mar. 6, 2007
7138887 Coupler with lateral extension Nov. 21, 2006
7132906 Coupler having an uncoupled section Nov. 7, 2006
7095294 Directional bridge coupler Aug. 22, 2006
7042309 Phase inverter and coupler assembly May. 9, 2006
7034633 Coupling device using buried capacitors in multilayered substrate Apr. 25, 2006
7005726 Semiconductor device with an improved transmission line Feb. 28, 2006
6998936 Broadband microstrip directional coupler Feb. 14, 2006
6972639 Bi-level coupler Dec. 6, 2005
6963255 Power splitter Nov. 8, 2005
6952147 Microstrip coupler Oct. 4, 2005
6873224 Ninety degree coupler for radio frequency degraded circuits Mar. 29, 2005
6825738 Reduced size microwave directional coupler Nov. 30, 2004
6794954 Microstrip coupler Sep. 21, 2004
6784521 Directional coupler Aug. 31, 2004
6759922 High directivity multi-band coupled-line coupler for RF power amplifier Jul. 6, 2004
6693499 Compact lumped element ring balun layout Feb. 17, 2004
6686812 Miniature directional coupler Feb. 3, 2004
6646504 Broadband amplifier system having improved linearity and minimum loss Nov. 11, 2003
6647065 Process aimed at the extraction of electrical signals, without breaking a line pair Nov. 11, 2003
6642809 Multi-layer chip directional coupler Nov. 4, 2003

1 2 3










 
 
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