Bi-directional vector modulator

Details Bi-directional vector modulator Bi-directional vector modulator

2005-05-17

2005-05-17

Le, Hoanganh (Department: 2821)

Communications: radio wave antennas

Antennas

With coupling network or impedance in the leadin

C343S850000, C330S149000, C342S372000

Reexamination Certificate

active

06894657

ABSTRACT:
The present invention provides a system for providing a bi-directional vector modulator in which the signal can travel in either direction while the phase shift remains constant. In addition to the functionality of being a phase shifter, the disclosed invention acts as a vector modulator by having the ability to continuously control both the amplitude and phase of a signal.

REFERENCES:
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patent: 5392009 (1995-02-01), Talwar
patent: 6104241 (2000-08-01), Cova et al.
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patent: 6313793 (2001-11-01), Brown et al.
patent: 6417712 (2002-07-01), Beards et al.
patent: 6441783 (2002-08-01), Dean
S.J. Kim and N.H. Myung, A New Active Phase Using a Vector Sum Method. IEEE Microwave and Guided Wave Letters, vol. 10 No. 6, Jun. 2000.

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