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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
7127808 Spiral couplers manufactured by etching and fusion bonding Oct. 31, 2006
7119633 Compensated interdigitated coupler Oct. 10, 2006
7116945 Adaptive radio transceiver with an antenna matching circuit Oct. 3, 2006
7088201 Three-dimensional quasi-coplanar broadside microwave coupler Aug. 8, 2006
7075387 Directional coupler, antenna interface unit and radio base station having an antenna interface unit Jul. 11, 2006
7057473 Electromagnetic broadside energy probe with integral impedance matching Jun. 6, 2006
7049905 High power directional coupler May. 23, 2006
7042306 Three dimensional multimode and optical coupling devices May. 9, 2006
7034633 Coupling device using buried capacitors in multilayered substrate Apr. 25, 2006
7030713 Miniature high performance coupler Apr. 18, 2006
7026884 High frequency component Apr. 11, 2006
7026886 Miniaturized microwave integrated circuit using complementary conducting surfaces Apr. 11, 2006
7015771 Directional coupler Mar. 21, 2006
7009467 Directional coupler Mar. 7, 2006
7005726 Semiconductor device with an improved transmission line Feb. 28, 2006
7006931 System and method for efficient analysis of transmission lines Feb. 28, 2006
7002430 Compact non-linear geometry electromagnetic coupler for use with digital transmission systems Feb. 21, 2006
7002433 Microwave coupler Feb. 21, 2006
6998936 Broadband microstrip directional coupler Feb. 14, 2006
6972640 Directional coupler, high frequency circuit module and wireless communication system Dec. 6, 2005
6972638 Directional coupler and electronic device using the same Dec. 6, 2005
6972639 Bi-level coupler Dec. 6, 2005
6965279 Double-sided, edge-mounted stripline signal processing modules and modular network Nov. 15, 2005
6961990 Method of manufacturing multilayer microwave couplers using vertically-connected transmission line structures Nov. 8, 2005
6956449 Quadrature hybrid low loss directional coupler Oct. 18, 2005
6956448 Electromagnetic energy probe with integral impedance matching Oct. 18, 2005
6952147 Microstrip coupler Oct. 4, 2005
6946927 Suspended substrate low loss coupler Sep. 20, 2005
6922115 Attenuator with switchable transistors for controlling attenuation Jul. 26, 2005
6917789 Adaptive radio transceiver with an antenna matching circuit Jul. 12, 2005
6906598 Three dimensional multimode and optical coupling devices Jun. 14, 2005
6903625 Microstrip RF signal combiner Jun. 7, 2005
6900706 Compact balun with rejection filter for 802.11a and 802.11b simultaneous operation May. 31, 2005
6894578 Irreversible circuit module including a directional coupler May. 17, 2005
6891448 Compact balun for 802.11a applications May. 10, 2005
6864759 Rotary signal coupler Mar. 8, 2005
6859114 Metamaterials for controlling and guiding electromagnetic radiation and applications therefor Feb. 22, 2005
6853268 Noise filter Feb. 8, 2005
6847813 RF printed circuit board connector with through-hole leads Jan. 25, 2005
6838958 Rotary signal coupler Jan. 4, 2005
6825738 Reduced size microwave directional coupler Nov. 30, 2004
6822531 Switched-frequency power dividers/combiners Nov. 23, 2004
6822532 Suspended-stripline hybrid coupler Nov. 23, 2004
6809610 Balancing network Oct. 26, 2004
6794954 Microstrip coupler Sep. 21, 2004
6794953 Radio frequency amplifying circuit Sep. 21, 2004
6791431 Compact balun with rejection filter for 802.11a and 802.11b simultaneous operation Sep. 14, 2004
6788163 Digital network Sep. 7, 2004
6778037 Means for handling high-frequency energy Aug. 17, 2004
6774743 Multi-layered spiral couplers on a fluropolymer composite substrate Aug. 10, 2004

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