Communications: radio wave antennas – Antennas – With coupling network or impedance in the leadin
Patent
1998-02-06
2000-08-01
Lee, Benny T.
Communications: radio wave antennas
Antennas
With coupling network or impedance in the leadin
343895, 343789, 333 26, H01Q 146, H01P 510
Patent
active
060973498
ABSTRACT:
A feed circuit connects an antenna to a communications circuit to achieve an increased operating bandwidth. The feed circuit includes a folded balun having a balanced port configured to connect the antenna and an unbalanced port configured to connect to the communications circuit. In addition, a resonating capacitance is connected across the balanced port of the folded balun. The resonating capacitance has a value that provides resonance with an inductance of the balun in such a way that the operating bandwidth of the combined feed circuit and antenna is increased.
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patent: 5644272 (1997-07-01), Drabowski
International Search Report, PCT/US98/24548, Mar. 4, 1999.
Ericsson Inc.
Lee Benny T.
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