Wide angle, single screen, gridded square-loop frequency selecti

Details Wide angle, single screen, gridded square-loop frequency selecti Wide angle, single screen, gridded square-loop frequency selecti

1993-07-15

1996-03-05

Lee, Benny T.

Communications: radio wave antennas

Antennas

Antenna components

333134, 333202, H01Q 1523

Patent

active

054971691

ABSTRACT:
The design and performance of a wide angle, single screen, frequency selective surface (FSS) with gridded square-loop path elements are described for diplexing closely separated signal bands, for example, X- and Ku-band signals in an Orbiting Very Long Baseline Interferometer (OVLBI) earth station reflector antenna system, as well as other applications such as military and commercial communications via satellites. Excellent agreement is obtained between the predicted and measured results of this FSS design using the gridded square-loop patch elements sandwiched between 0.0889 cm thick tetrafluoroethylene fluorocarbon polymer (PTFE) slabs. Resonant frequency drift is reduced by 1 GHz with an incidence angle from 0.degree. normal to 40.degree. from normal.

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