Annular slot patch excited array

Details Annular slot patch excited array Annular slot patch excited array

1992-08-26

1995-02-28

Hajec, Donald

Communications: radio wave antennas

Antennas

Slot type

343700MS, 343700R, H01Q 1310

Patent

active

053941632

ABSTRACT:
The target seeker system includes two radio frequency antennas consisting of two sets of radio frequency selective annular slot patch excited radiator receiver elements, one set for K-band energy, the other for X-band energy, sharing a common ground plane. The radio frequency antennas have a single multi-band image plate consisting of resonant dichroic surfaces which will selectively reflect X- and K-band energy. An image plate is formed with conductive patterns on each side of a low dielectric material. The reflective pattern acts as a quarter wavelength thick plate at the operating frequency. The top of the image plate which has X-band reflectors is spaced at one-half of the desired X-band wavelength above the ground plane and the K-band reflector on the bottom of the image plate is spaced at one-half of the desired K-band wavelength. The thickness of the image plate is adjusted to provide the appropriate relative spacing between the X-band reflecting surface on the top and the K-band reflecting surface on the bottom.

REFERENCES:
patent: 4864314 (1989-09-01), Bond
patent: 5001493 (1991-03-01), Patin et al.
patent: 5153600 (1992-10-01), Metzler et al.
patent: 5239311 (1993-08-01), Arimura et al.

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