Title :
A wideband frequency scanning microstrip antenna array with low profile
Author :
Zhiwei Sun ; Zuoxin Dai ; Xiaobo Xuan ; Xing Li
Author_Institution :
Shanghai Radio Equip. Res. Inst., Shanghai, China
Abstract :
This paper presents a frequency scanning array antenna in C-band used for radar applications. First a rectangular U-slot patch antenna proximity fed by a double-Π stub is described with an impedance bandwidth of about 18% (for VSWR<;1.5) and a gain of around 9dB. Then a series feed-network including slow-wave line is used to achieve the characteristics of frequency scan. At last a 2*6 low-profile antenna array is fabricated which the height is just 0.084λ in center frequency. Its impedance bandwidth is about 14.7%(for VSWR<;1.5) and the gain is more than 15dB. The angular range from 1 degree to 57 degree is obtained for a frequency variation of 1GHz. The antenna can also be applied for detecting covered objects and short range imaging.
Keywords :
microstrip antenna arrays; radar antennas; slot antenna arrays; C-band; VSWR; double-II stub; frequency 1 GHz; gain 9 dB; impedance bandwidth; radar applications; rectangular U-slot patch antenna; series feed-network; short range imaging; slow-wave line; wideband frequency scanning microstrip antenna array; Broadband antennas; Feeds; Frequency measurement; Laboratories; Wideband; frequency scanning antenna; radome; siries feed-network; wideband micrstrip antenna;
Conference_Titel :
Mechatronic Sciences, Electric Engineering and Computer (MEC), Proceedings 2013 International Conference on
Conference_Location :
Shengyang
Print_ISBN :
978-1-4799-2564-3
DOI :
10.1109/MEC.2013.6885555
