Microwave phase shifter with piezoelectric control

Details Microwave phase shifter with piezoelectric control Microwave phase shifter with piezoelectric control

1986-04-29

1988-08-30

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Delay lines including long line elements

333157, 333248, 343768, 343771, 343778, 343785, H01P 118, H01Q 326, H01Q 332, H01Q 1300

Patent

active

047680016

ABSTRACT:
A microwave phase shifter comprise a dielectric waveguide having a flat side and a moving conductor plane member substantially parallel to the waveguide side. Piezoelectric means are provided to move the plane member with respect to the waveguide side between a portion relatively remote from the waveguide side and an other position substantially in contact with the waveguide side. The piezoelectric means consists preferably of a stack of piezoelectric members supplied by a variable d.c. power source. Owing to the piezoelectric means for moving the conductor plane member, a variable phase shift is continuously adjusted. Such a phase shifter can be as an antenna network when the dielectric waveguide contains groups of radiator perturbations, such as conductor strips, respectively controlled by one or several piezoelectric means carrying conductor plates facing waveguide portions including the perturbations groups.

REFERENCES:
patent: 4575697 (1986-03-01), Rao et al.
Klohn, Kenneth L., "Metal Walls in Close Proximity to a Dielectric Wavegu Antenna"; IEEE Transactions on Microwave Theory and Techniques; vol. MTT-29, No. 9, Sep. 1981; pp. 962-966.
Jacobs, Harold and Chrepta, Metro M., "Electronic Phase Shifter for Millimeter-Wave Semiconductor Dielectric Integrated Circuits"; IEEE Transactions on Microwave Theory and Techniques, vol. MTT-22, No. 4, Apr. 1974; pp. 411-417.

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