A 64-element array antenna for 58 GHz

Author

Sehm, T. ; Lehto, A. ; Raisanen, A.V.

Author_Institution

Radio Lab., Helsinki Univ. of Technol., Espoo, Finland

Volume

4

fYear

1999

fDate

11-16 July 1999

Firstpage

2744

Abstract

A planar array of box horns is presented for the frequency band 57.2-58.2 GHz. The horns are fed in parallel with a waveguide feed network. Improved T-junctions are used to connect the waveguides. The horns are divided into two subarrays shifted sideways in order to reduce the grating lobe in the H-plane, which is due to the large element spacing. The radiation pattern of the horn is also optimized to reduce H-plane sidelobe levels. The measured H-plane sidelobe level is below -35 dB at angles larger than 18/spl deg/ from boresight with a gain higher than 31 dBi. The measured return loss exceeds 17 dB over the band 57.2-58.2 GHz.

Keywords

antenna feeds; antenna radiation patterns; horn antennas; losses; millimetre wave antenna arrays; planar antenna arrays; waveguide components; waveguide junctions; 57.2 to 58.2 GHz; 64-element array antenna; EHF; H-plane; H-plane sidelobe levels reduction; T-junctions; boresight; box horns; element spacing; frequency band; grating lobe reduction; measured H-plane sidelobe level; measured return loss; planar array; radiation pattern; subarrays; waveguide feed network; Antenna arrays; Arrayed waveguide gratings; Feeds; Frequency; Phased arrays; Planar arrays; Planar transmission lines; Power transmission lines; Propagation losses; Rectangular waveguides;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1999. IEEE

Conference_Location

Orlando, FL, USA

Print_ISBN

0-7803-5639-x

Type

conf

DOI

10.1109/APS.1999.789375

Filename

789375