Abstract
In this paper, nonradiative (NRD) rotman lens with a gap-coupled unidirectional dielectric radiator (UDR) has been presented. Design parameters of UDR such as length of resonator and distance of gap are determined using an equivalent circuit model of an evanescent NRD guide. Experimental prototype is fabricated and measured around 38GHz. The result shows a good agreement with theory. Finally, total beam pattern of NRD rotman lens of multi-beam feed has been obtained using a measured pattern of DUR and array factor of NRD retina lens. The obtained beam pattern shows remarkably suppressed side lobe.
| Original language | English |
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| Pages (from-to) | 684-687 |
| Number of pages | 4 |
| Journal | AP-S International Symposium (Digest) (IEEE Antennas and Propagation Society) |
| Volume | 4 |
| State | Published - 2003 |
| Event | 2003 IEEE International Antennas and Propagation Symposium and USNC/CNC/URSI North American Radio Science Meeting - Columbus, OH, United States Duration: 22 Jun 2003 → 27 Jun 2003 |