ALPSS: a millimetre-wave aperture-coupled patch antenna on a substrate lens

Author

Eleftheriades, G.V. ; Brand, Y. ; Zürcher, J.F. ; Mosig, J.R.

Author_Institution

Lab. of Electromagn. & Acoust., Swiss Federal Inst. of Technol., Lausanne, Switzerland

Volume

33

Issue

3

fYear

1997

fDate

1/30/1997 12:00:00 AM

Firstpage

169

Lastpage

170

Abstract

The feasibility of millimetre-wave (MM-wave) aperture-coupled patch antennas, printed at the back surface of substrate-lenses is demonstrated and the corresponding radiation characteristics are investigated. A specific realisation of such an air-lens-patch-slot-strip (ALPSS) antenna on a low-permittivity ε _r=4.0 extended hemispherical lens substrate is theoretically and experimentally characterised at 70 GHz. It is demonstrated that the ALPSS antenna exhibits clean, axially symmetric patterns of low cross-polarisation (26 dB), a directivity of 30.4 dB and the 3 dB pattern full-beamwidth remains within 6°-5° between 60-80 GHz. In addition, a very-high front-to-back (F/B) ratio, of the order of 50 dB is measured at 70 GHz, despite the absence of a backing ground-plane. The ALPSS antenna is well suited for low-cost broadband point-to-point communications and collision avoidance applications

Keywords

antenna radiation patterns; lens antennas; microstrip antennas; millimetre wave antennas; mobile antennas; 60 to 80 GHz; 70 GHz; ALPSS antenna; EHF; MM-wave antenna; air-lens-patch-slot-strip antenna; aperture-coupled patch antenna; axially symmetric patterns; collision avoidance applications; directivity; hemispherical lens substrate; low cross-polarisation; low-cost broadband point-to-point communications; low-permittivity substrate; millimetre-wave patch antenna; radiation characteristics; substrate lens;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el:19970150

Filename

575897