Title :
A compact millimeter-wave horn antenna array fabricated through layer-by-layer stereolithography
Author :
Schulwitz, Lora ; Mortazawi, Amir
Author_Institution :
Gen. Dynamics R&D Center, Ypsilanti, MI
Abstract :
In this paper, a millimeter-wave dielectrically filled compact horn antenna array is presented, which is fabricated through layer-by-layer stereolithography. The antennas are well suited for phased array circuits due to their ability to interface with microstrip circuitry through low profile microstrip to waveguide transitions. The aperture size of the horn antenna is 0.5 lambda square, and the entire antenna and waveguide feeding structure does not exceed this area, thereby allowing for compact integration of multiple antenna elements. The antenna demonstrates broad bandwidth with better than -10 dB return loss from 35 to 39.5 GHz. The radiation patterns of a single horn antenna show broad angular beamwidth for wide-angle phased array scanning, and there is 5.7 dB gain with better than 20 dB cross-polarization discrimination at broadside.
Keywords :
antenna feeds; antenna phased arrays; antenna radiation patterns; aperture antennas; horn antennas; microstrip antenna arrays; millimetre wave antenna arrays; stereolithography; aperture antenna; broad angular beamwidth; frequency 35 GHz to 39.5 GHz; gain 5.7 dB; layer-by-layer stereolithography; microstrip circuitry; millimeter-wave horn antenna array; phased array circuit; radiation pattern; waveguide feeding structure; wide-angle phased array scanning; Antenna arrays; Antenna feeds; Aperture antennas; Dielectrics; Horn antennas; Microstrip antenna arrays; Microstrip antennas; Millimeter wave circuits; Phased arrays; Stereolithography;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-2041-4
Electronic_ISBN :
978-1-4244-2042-1
DOI :
10.1109/APS.2008.4619409