Title :
Comparison of phased array configurations of spiral antennas
Author :
Hongzhao Ray Fang ; Balakrishnan, Ramanan ; Guinvarc´h, Regis ; Mouthaan, Koen
Author_Institution :
Dept. of ECE, Nat. Univ. of Singapore, Singapore, Singapore
Abstract :
A wideband spiral antenna array configuration with interstitially packed spiral antennas is presented. It is compared with a spiral array in the linear and the Wideband Array of Variable Elements Sizes (WAVES) configuration. All three configurations are realized, measured and compared. By packing smaller spiral elements in the interstices of a linear spiral array, we observe an improvement of more than 14 dB in grating lobe rejection compared to the traditional linear configuration when the main beam is pointing at boresight.
Keywords :
antenna phased arrays; antenna radiation patterns; broadband antennas; linear antenna arrays; spiral antennas; WAVES configuration; antenna beam; grating lobe rejection; interstitially packed spiral antenna; linear spiral array; wideband array of variable element size configuration; wideband spiral antenna phased array configuration; Antenna arrays; Antenna measurements; Antenna theory; Phase measurement; Spirals; antenna; array; interstitial; wideband;
Conference_Titel :
Antennas and Propagation (EuCAP), 2015 9th European Conference on
