Title :
Four-arm sinuous antenna for direction finding system
Author :
Zhang, H.S. ; Xiao, K. ; Qiu, Lei ; Chai, S.L.
Author_Institution :
Coll. of Electron. Sci. & Eng, Nat. Univ. of Defense Technol. Changsha, Changsha, China
Abstract :
This paper proposes a feeding method for four-arm sinuous antenna, which is realized by using microstrip printed board welded on metal pyramid. It is an effective way to solve the problem of input impedance transformation and broadband balun. Then a four-arm sinuous antennas working at 0.4GHz to 2GHz is given, the measured results of VSWR and radiation pattern show that the feed form is reliable and effective, and the antenna has excellent performance in the operating bandwidth.
Keywords :
UHF antennas; antenna feeds; antenna radiation patterns; baluns; microstrip antennas; radio direction-finding; VSWR; broadband balun; direction finding system; feeding method; four-arm sinuous antenna; frequency 0.4 GHz to 2 GHz; input impedance transformation; metal pyramid; microstrip printed board; radiation pattern; Antenna feeds; Antenna measurements; Broadband antennas; Impedance; Four-arm sinuous antenna; broadband; impedance transformation; polarization;
Conference_Titel :
Wireless Symposium (IWS), 2014 IEEE International
Conference_Location :
X´ian
DOI :
10.1109/IEEE-IWS.2014.6864258
