Non-dispersive variable phase shifter and variable length transm

Details Non-dispersive variable phase shifter and variable length transm Non-dispersive variable phase shifter and variable length transm

1989-03-29

1991-05-07

LaRoche, Eugene R.

Wave transmission lines and networks

Coupling networks

Delay lines including long line elements

333161, 342372, H03H 1120, H01Q 322

Patent

active

050140230

ABSTRACT:
A varactor controlled phase shifter device is disclosed wherein the phase velocities through the device are substantially equal at all frequencies, thus resulting in the phase constant of the phase shifter device being proportional to frequency. The magnitude of phase shift is selectable over a predetermined range by a continuously variable external control voltage, and this phase shift is linearly proportional to frequency. The device may also be used as a variable length transmission line, useful for such applications as frequency selective impedance matching.

REFERENCES:
patent: 3246265 (1966-04-01), Smith-Vaniz
patent: 3260968 (1966-07-01), Drapkin
patent: 3748499 (1973-07-01), Schaffner
patent: 4604591 (1986-08-01), Vasile
patent: 4649393 (1987-03-01), Rittenbach
patent: 4701714 (1987-10-01), Agoston
patent: 4837532 (1989-08-01), Lang

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