Title :
A 38 GHz Horn Antenna Array
Author :
Sehm, T. ; Lehto, A. ; Räisänen, A.V.
Author_Institution :
Helsinki University of Technology, Institute of Radio Communications /Radio Laboratory, P.O. Box 3000, FIN-02015 HUT, Finland. tse@radio.hut.fi
Abstract :
A planar antenna array of box horns for the frequency range 37.0-39.5 GHz was designed and tested. Low sidelobes in the H-plane have been realized by combining two box horn arrays shifted sideways. The radiating elements are fed in parallel through a waveguide feed network, where improved T-junctions are used as power dividers. A 64-element antenna array has been built. According to the measurements, a sidelobe level of ¿35 dB in the H-plane at an angle of 36° from the main beam, a gain of 30.4 dBi, and a return loss higher than 16.9 dB have been achieved over the band 37.0-39.5 GHz.
Keywords :
Antenna arrays; Antenna measurements; Feeds; Frequency; Gain measurement; Horn antennas; Loss measurement; Planar arrays; Power dividers; Testing;
Conference_Titel :
Microwave Conference, 1998. 28th European
Conference_Location :
Amsterdam, Netherlands
DOI :
10.1109/EUMA.1998.337983
