Switched-loop/180 degree phase bit with aperture shutter capabil

Details Switched-loop/180 degree phase bit with aperture shutter capabil Switched-loop/180 degree phase bit with aperture shutter capabil

Filed on

1989-12-13

Date issued

1991-05-07

Examiner

LaRoche, Eugene R.

Patent Class

Wave transmission lines and networks

SubClass

Coupling networks

SubSubClass

Delay lines including long line elements

Other Related Categories

333156, 333164, H01P 118, H01P 1185

Type

Patent

Status

active

Patent number

050140221

Description

ABSTRACT:
A switched loop/180.degree. phase shift device is disclosed, having the additional capability of an aperture shutter that can be selected to produce either a noncorrelated reflection in one mode of operation, or to absorb RF energy that enters the radiating aperture port in the other mode.

REFERENCES:
patent: 3803621 (1974-04-01), Britt
patent: 4070639 (1978-01-01), Nemit et al.
patent: 4305052 (1981-12-01), Baril et al.
patent: 4496918 (1985-01-01), Thorpe
Davis, "Integrated Diode Phase-Shifter Elements for an X-Band Phased-Array Antenna", IEEE Trans. on Microwave Theory & Tech. Dec. 1975, pp. 1080-1084.

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