Millimeter-wave double-dipole antennas for high efficiency reflector illumination

D. F. Filipovic

doi:10.1117/12.2301612

1 December 1990 Millimeter-wave double-dipole antennas for high efficiency reflector illumination

D. F. Filipovic

Proceedings Volume 1514, 15th International Conference on Infrared and Millimeter Waves; 15145M (1990) https://doi.org/10.1117/12.2301612
Event: 15th International Conference on Infrared and Millimeter Waves, 1990, Orlando, FL, United States

Abstract

A double-dipole antenna integrated on a thin dielectric membrane and backed by a large ground plane is presented. The double-dipole design results in nearly equal E and H-plane patterns with a gain of 12-13dB, cross-polarization levels lower than -27dB, and a main-beam efficiency of 90%. The input impedance is around 50Ω and will match well to a Schottky-diode or SIS detector. The measured coupling between two antennas with 1λ spacing is lower than 20dB. It is therefore possible to array the double-dipole antenna for diffraction-limited imaging. The double-dipole antenna is a simple antenna with a very low cross-polarization component useful for millimeter and submillimeter-wave applications requiring a ±5% bandwidth.

Citation Download Citation

D. F. Filipovic "Millimeter-wave double-dipole antennas for high efficiency reflector illumination", Proc. SPIE 1514, 15th International Conference on Infrared and Millimeter Waves, 15145M (1 December 1990); https://doi.org/10.1117/12.2301612

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