Title :
SIW-Fed Yagi Antenna and Its Application on Monopulse Antenna
Author :
Xiong Zou ; Chuang-Ming Tong ; Jun-Song Bao ; Wei-Jian Pang
Author_Institution :
Air & Missile Defense Coll., Air Force Eng. Univ., Xi´an, China
Abstract :
Planar Yagi antennas are commonly hard to possess simple structure, high gain, and broad bandwidth at the same time. In this letter, a new substrate integrated waveguide (SIW)-fed Yagi antenna is proposed with nonplanar director element, and it achieves bandwidth of 25.7% and gain of 9.46 dBi at 10.0 GHz. Integrated of an SIW hybrid ring coupler, a Yagi monopulse antenna is designed. Measured gain of the sum pattern is higher than 13 dBi, whereas the maximum null depth of the difference pattern is lower than -20 dB in 9.4-10.05 GHz. This type of monopulse antenna presents an excellent candidate in directional-finding system.
Keywords :
Yagi antenna arrays; monopole antennas; substrate integrated waveguides; SIW hybrid ring coupler; SIW-Fed Yagi Antenna; Yagi monopulse antenna; broad bandwidth; directional finding system; frequency 10 GHz; frequency 9.4 GHz to 10.05 GHz; gain 9.46 dB; monopulse antenna application; nonplanar director element; planar yagi antennas; substrate integrated waveguide; sum pattern; Antenna measurements; Bandwidth; Couplers; Gain; Loss measurement; Microstrip antennas; Monopulse; Yagi antenna; ring coupler; substrate integrated waveguide (SIW);
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2014.2327161
