Phase shifter and polarization switch

Details Phase shifter and polarization switch Phase shifter and polarization switch

1976-02-26

1978-05-09

Smith, Alfred E.

Wave transmission lines and networks

Coupling networks

With impedance matching

333 11, 343854, H03H 720, H01P 118, H01P 516, H01P 900

Patent

active

040889700

ABSTRACT:
An octave band phase shifter/polarization switch is disclosed which is comprised of a plurality of serially coupled phase bits arranged to provide, in combination, a four bit phase shifter and a polarization switch capable of providing any selected one of six separate polarization senses. The device is fabricated in a stripline package and each of the phase bits is comprised of a hybrid coupler whose output ports are terminated in switchable reactances. Either packaged microwave P-I-N or N-I-P diodes are utilized as the switchable reactances, and bias voltage for the diodes is provided by means of an octave band choke, comprising a dielectrically loaded coil disposed within a center dielectric layer of the stripline package.

REFERENCES:
patent: 3246265 (1966-04-01), Smith-Vaniz
patent: 3321717 (1967-05-01), Harper
patent: 3400405 (1968-09-01), Patterson, Jr.
patent: 3611199 (1971-10-01), Safran
patent: 3710145 (1973-01-01), Williamson et al.
patent: 3725943 (1973-04-01), Spanos
White-"Diode Phase Shifters for Array Antennas", pub. by Microwave Associates Copywright 1974, pp. 1-19.
Flaherty- "Prevent Polarization Fading", in Electronic Design, No. 7, vol. 19, Aug. 16, 1971, pp. 68-69.

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