Amplifying Active Reflect-Antenna Using a Microstrip-T coupled Patch -- Design and Measurement.

D.G. Kurup , A. Rydberg and M. Himdi

IEEE Microwave Theory and Techniques, Vol. 51, Aug. 2003.

Abstract:

A compact design of an amplifying active reflect-antenna using a novel microstrip-T coupled patch antenna is proposed. The dual polarized ports of the microstrip-T coupled patch antenna provide excellent RF isolation as well as DC isolation. The DC isolation helps in avoiding additional coupling capacitors in the RF path, thereby achieving reduced layout size and cross-polarization levels for the active reflect-antenna. The gain and the monostatic RCS (Radar Cross Section) measurement of the active reflect-antenna has been carried out using a time domain technique based on a single dual polarized antenna and a vector network-analyzer. The measured monostatic RCS and gains are then compared with the calculated ones using two different modelling approaches.