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Class Information
Number: 343/821
Name: Communications: radio wave antennas > Antennas > Balanced doublet - centerfed (e.g., dipole) > With coupling network or impedance in the leadin > Balanced to unbalanced circuit
Description: Subject matter wherein the passive coupling network includes four terminals, one pair of which are connected to the balanced doublet and the other pair being for connection to a source or receiver of signal energy or a circuit network leading thereto; the impedance across the pair of terminals connected to the balanced doublet being symmetrical and the network impedance across the other pair of terminals being asymmetrical with respect to a given potential plane (e.g., ground), this latter impedance being effective to convert symmetrical potential applied at the symmetrical pair of terminals (for connection to the balanced doublet) to asymmetrical potential applied at the other pair of terminals or vice versa.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
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8391927 Multiple mode RF transceiver and antenna structure Mar. 5, 2013
8350774 Double balun dipole Jan. 8, 2013
8270907 Method and system for matching an integrated FM system to an antenna utilizing on-chip measurement of reflected signals Sep. 18, 2012
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8203499 Conformable antenna Jun. 19, 2012
8184063 Balanced dipole antenna May. 22, 2012
8164535 Coplanar waveguide FED planar log-periodic antenna Apr. 24, 2012
8154466 Antenna feed module Apr. 10, 2012
7994874 Tapered double balun Aug. 9, 2011
7925220 Method and system for matching an integrated FM system to an antenna utilizing on-chip measurement of reflected signals Apr. 12, 2011
RE42087 Tunable antenna system Feb. 1, 2011
7761115 Multiple mode RF transceiver and antenna structure Jul. 20, 2010
7724201 Compact diversity antenna system May. 25, 2010
7719381 Transmission line balun for broadband combiners, splitters and transformers May. 18, 2010
7692600 Internal utility meter antenna Apr. 6, 2010
7639198 Dipole antenna array having dipole arms tilted at an acute angle Dec. 29, 2009
7629939 Broadband dual polarized base station antenna Dec. 8, 2009
7586457 Balanced dipole antenna Sep. 8, 2009
7319435 Balun for an antenna Jan. 15, 2008
7298345 Dipole antenna element Nov. 20, 2007
7280083 Phased array blade antenna assembly Oct. 9, 2007
7280079 Adapter device for car radio Oct. 9, 2007
7259725 Log-periodic dipole array antenna Aug. 21, 2007
7193579 Balanced dipole antenna Mar. 20, 2007
7116281 Universal dipole with adjustable length antenna elements Oct. 3, 2006
7113141 Fractal dipole antenna Sep. 26, 2006
7109821 Connections and feeds for broadband antennas Sep. 19, 2006
7075497 Antenna array Jul. 11, 2006
7012573 Wide band antenna Mar. 14, 2006
6987483 Effectively balanced dipole microstrip antenna Jan. 17, 2006
6982609 System method and apparatus for a three-line balun with power amplifier bias Jan. 3, 2006
6950077 Antenna system for terrestrial broadcasting Sep. 27, 2005
6937204 Plate dipole antenna Aug. 30, 2005
6753814 Dipole arrangements using dielectric substrates of meta-materials Jun. 22, 2004
6741219 Parallel-feed planar high-frequency antenna May. 25, 2004
6717555 Antenna array Apr. 6, 2004
6697029 Antenna array having air dielectric stripline feed system Feb. 24, 2004
6677914 Tunable antenna system Jan. 13, 2004
6664934 Radio antenna matching circuit Dec. 16, 2003
6657601 Metrology antenna system utilizing two-port, sleeve dipole and non-radiating balancing network Dec. 2, 2003
6621465 Antenna array having sliding dielectric phase shifters Sep. 16, 2003
6552693 Antenna Apr. 22, 2003
6552689 Portable communication terminal Apr. 22, 2003
6483471 Combination linearly polarized and quadrifilar antenna Nov. 19, 2002
6424316 Helical antenna Jul. 23, 2002

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