Wide Band mm- and Sub-mm-Wave Dielectric Rod Waveguide Antenna
作者： Andrey A. Generalov , Johannes A. Haimakainen , Dmitri V. Lioubtchenko , Antti V. Raisanen
DOI: 10.1109/TTHZ.2014.2342503
关键词:
摘要: The design of a dielectric rod waveguide (DRW) antenna for frequencies 75-325 GHz is presented. optimal broadband geometry determined using numerical simulations . A single DRW matched with metal waveguides different sizes frequency bands. Measurement results agree very well the simulation up to 325 GHz; gain stays nearly constant ( G ≈ 10 dB) over whole range measured from 75 (160% relative bandwidth). upper limit due our limited manufacturing capability produce sharp tips. return loss better than 15 dB. radiation patterns are independent frequency. 3 dB beamwidth 50 ° -60 ° , and about 95 ° . This indicates that aperture size this end-fire decreases as function frequency, observation agrees earlier phase center moves towards tip Also cross polarization was studied. cross-polarization level -15 at all
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