Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Electrical & Energy
Class Information
Number: 333/109
Name: Wave transmission lines and networks > Plural channel systems > Having branched circuits > Using directional coupler
Description: Wave transmission systems including two transmission lines having an intervening coupling which propagates a portion of the energy passing in one direction along the first line in the second line in only one direction from the coupling, and which propagates a portion of the energy which may pass in the other direction along the first line in the second line in the opposite direction only from the coupling.










Sub-classes under this class:

Class Number Class Name Patents
333/111 For providing adjustable coupling 68
333/110 For providing frequency separation 66
333/114 Having crossed-guide waveguide 24
333/112 Having lumped parameters or impedances 105
333/113 Having parallel-guide waveguide 114
333/115 Having tem lines 61


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

Patent Number Title Of Patent Date Issued
8704575 Tunable active directional couplers Apr. 22, 2014
8643448 High power miniature RF directional coupler Feb. 4, 2014
8643447 Terminal circuit and bi-directional coupler using the terminal circuit Feb. 4, 2014
8638182 Systems and methods for electrical power multiplication Jan. 28, 2014
8634784 Compact radiofrequency coupler Jan. 21, 2014
8629735 Electronic component Jan. 14, 2014
8629734 Systems and methods for power smoothing in power distribution Jan. 14, 2014
8629736 Directional coupler Jan. 14, 2014
8611845 Enhanced flexibility coupler for RF power detection and control Dec. 17, 2013
8606198 Directional coupler architecture for radio frequency power amplifier with complex load Dec. 10, 2013
8587387 RF directional coupler circuit assembly for matching high frequency cable TV apparatus Nov. 19, 2013
8570115 Power division network device Oct. 29, 2013
8525614 Coupler Sep. 3, 2013
8476987 Integrated bidirectional coupler Jul. 2, 2013
8446230 Microwave directional coupler May. 21, 2013
8422947 Communication device, high-frequency coupler, coupler electrode, and composite communication apparatus Apr. 16, 2013
8421553 Directional coupler Apr. 16, 2013
8421552 High-frequency switch Apr. 16, 2013
8410864 Integrated directional coupler Apr. 2, 2013
8405469 Composite right/left (CRLH) couplers Mar. 26, 2013
8405470 Diplexer synthesis using composite right/left-handed phase-advance/delay lines Mar. 26, 2013
8400234 Apparatus for removing leakage signal Mar. 19, 2013
8390391 Semiconductor device and method of integrating balun and RF coupler on a common substrate Mar. 5, 2013
8384493 Emulation of anisotropic media in transmission line Feb. 26, 2013
8384494 Multiband coupling circuit Feb. 26, 2013
8314663 Directional coupler Nov. 20, 2012
8314664 Microstrip technology hyperfrequency signal coupler Nov. 20, 2012
8315562 Method and apparatus for reducing spurious RF signals in RFID reader Nov. 20, 2012
8315576 Capacitive compensation of cascaded directional couplers Nov. 20, 2012
8290445 Electronic device, and information apparatus, communications apparatus, AV apparatus, and mobile apparatus using the same Oct. 16, 2012
8279020 Units for analog signal processing Oct. 2, 2012
8228134 Method and system for processing signals via directional couplers embedded in an integrated circuit package Jul. 24, 2012
8174338 Impedance transforming hybrid coupler May. 8, 2012
8169277 Radio frequency directional coupler device and related methods May. 1, 2012
8143816 Power variator Mar. 27, 2012
8121574 Loop-type directional coupler Feb. 21, 2012
8107892 Directional coupler and transmitting/receiving apparatus Jan. 31, 2012
8093884 Directional coupler Jan. 10, 2012
8089329 Semiconductor switch, semiconductor switch MMIC, changeover switch RF module, power resistance switch RF module, and transmitter and receiver module Jan. 3, 2012
8072288 Directional coupler Dec. 6, 2011
8072289 Composite right/left (CRLH) couplers Dec. 6, 2011
8055216 Antenna matching for MIMO transceivers Nov. 8, 2011
8049575 Directional coupler with inductively-compensated sharpness of directivity Nov. 1, 2011
8044748 Hybrid coupler and UHF television channel mixer comprising such a hybrid coupler Oct. 25, 2011
8035458 Semiconductor device and method of integrating balun and RF coupler on a common substrate Oct. 11, 2011
8023902 Adaptive radio transceiver with an antenna matching circuit Sep. 20, 2011
7965990 Wireless backhaul power amplification using fourier transform matricies Jun. 21, 2011
7961064 Directional coupler including impedance matching and impedance transforming attenuator Jun. 14, 2011
7889022 Electromagnetically coupled interconnect system architecture Feb. 15, 2011
7872538 Impulse generation circuit Jan. 18, 2011

1 2 3 4 5 6 7










 
 
  Recently Added Patents
Method and apparatus for encoding and decoding video based on first sub-pixel unit and second sub-pixel unit
Stable liquid VEGF antagonist formulations
Glass or glass-ceramic pane reflecting infrared radiation
Method and structure for image local contrast enhancement
Surface modification
High density vertical structure nitride flash memory
Transferring storage devices within storage device testing systems
  Randomly Featured Patents
Dictionary dazzle
Bicycle
Fine grain translation discrimination
Modular suspension system
System and method for information handling system wireless audio driven antenna
Method for performing operations on informational objects by visually applying the processes defined in utility objects in an IT (information technology) architecture visual model
Data exchange coordinating apparatus for a textile machine
Fibre-reinforced composite material and manufacture thereof
Bookmark
Method and apparatus for handling off-gases from metal refining vessel