Title :
Broadband SIW cavity-backed circularly polarized antenna element and array
Author :
Dong-Fang Guan ; Bing Fang ; Ying-Song Zhang ; Wei Shao ; Ju-Hong Shen
Author_Institution :
Coll. of Commun. Eng., PLA Univ. of Sci. & Technol., Nanjing, China
fDate :
March 30 2015-April 1 2015
Abstract :
A novel substrate integrated waveguide (SIW) cavity-backed circularly polarized antenna element and 2×2 array is proposed. Taking advantages of low loss and low profile of SIW, the antenna element and array have high efficiency and can be fabricated in the standard print circuit board (PCB) process. By adding SIW cavity around the corner-truncated patch antenna, the bandwidth of the circularly polarized (CP) antenna can be broadened. For the element, an impedance bandwidth of 15% and an axial ratio (AR) bandwidth of 4.3% can be achieved. For the 2×2 array with sequential feeding, the impedance bandwidth and the AR bandwidth can be enhanced to 27% and 13%, respectively.
Keywords :
antenna arrays; antenna feeds; microstrip antennas; printed circuits; substrate integrated waveguides; PCB process; broadband SIW cavity; circularly polarized antenna array; circularly polarized antenna element; corner truncated patch antenna; impedance bandwidth; sequential feeding; standard print circuit board; substrate integrated waveguide; Antenna measurements; Antennas; Cavity resonators; Impedance; Lead; Reflection coefficient; Substrates; Broadband; cavity-backed; circularly polarized; substrate integrated waveguide (SIW);
Conference_Titel :
Wireless Symposium (IWS), 2015 IEEE International
Conference_Location :
Shenzhen
DOI :
10.1109/IEEE-IWS.2015.7164576
