Title :
A Broadband Planar Monopulse Antenna Array of C-Band
Author :
Yu, Zhong-Wu ; Wang, Guang-Ming ; Zhang, Chen-xin
Author_Institution :
Air Force Eng. Univ., Sanyuan, China
fDate :
7/1/1905 12:00:00 AM
Abstract :
In this letter, a broadband planar monopulse antenna array of C-band for the application of monopulse radars is presented. A novel wideband monopulse comparator as the sum-difference feed network has been designed, and a multilayer 4 ?? 4 microstrip antenna array as the radiation part has been fabricated. The measurement results demonstrate that the impedance bandwidth (VSWR ?? 2) of the proposed monopulse antenna array is up to 28.2% and the null depth can reach -28 dB, which ranges from 5.05 to 6.675 GHz. At the same time, the peak sum beam gain is up to 18.4 dB. Compared to other monopulse antennas, the proposed monopulse antenna array exhibits excellent characteristics.
Keywords :
broadband antennas; microstrip antenna arrays; microwave antenna arrays; planar antenna arrays; radar antennas; C-band; bandwidth 5.05 GHz to 6.675 GHz; broadband planar monopulse antenna array; gain 18.7 dB; impedance bandwidth; loss 28 dB; monopulse radars; multilayer 4 ?? 4 microstrip antenna array; sum-difference feed network; Monopulse antenna; monopulse comparator; null depth;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2009.2038077
