Communications: radio wave antennas – Antennas – With coupling network or impedance in the leadin
Patent
1998-04-10
2000-06-20
Lee, Benny T.
Communications: radio wave antennas
Antennas
With coupling network or impedance in the leadin
343859, 333117, 333118, 333124, 333131, 333138, 333139, H01P 512, H03H 1120, H01Q 916
Patent
active
060782994
ABSTRACT:
A multi-phase coupler including a noise reduction circuit which provides two output signals which are separately shifted in phase with respect to an input radio frequency (RF) signal. The input RF signal is capacitively phase-shifted to lead the phase of an input RF signal to provide one output signal and is inductively phase-shifted to lag the phase of an input RF signal to provide a second output signal. The two phase-shifted outputs are impedance matched to the dual input ports of a balanced radiating structure that acts as a point source when the input ports are driven in phase quadrature.
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patent: 5148130 (1992-09-01), Dietrich
patent: 5155495 (1992-10-01), Hately
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Gillmann Harold E.
Lee Benny T.
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