Title :
A low weight S-band quadrifilar helical antenna for satellite communication
Author :
Chapari, A. ; Firouzeh, Z.H. ; Moini, R. ; Sadeghi, S.H.H.
Author_Institution :
Electr. Eng. Dept., Amirkabir Univ. of Technol., Tehran
Abstract :
In this paper, a new design of an S-band, self-phased, one-turn quadrifilar helical antenna (QHA) has been presented. The antenna has been analyzed in purposed of desired radiation pattern by numerical method. A new matching technique has been used to improve VSWR of the QHA. The experimental results show the radiation pattern has Nadir null of about 6 dB and Axial Ratio is better than 1 dB. In addition, VSWR is less than 2 in frequency bandwidth of 120 MHz. The antenna has low weight, size and cost which is suitable for satellite communication systems.
Keywords :
UHF antennas; antenna radiation patterns; electromagnetic wave polarisation; helical antennas; microwave antennas; satellite communication; S-band quadrifilar helical antenna; antenna radiation pattern; bandwidth 120 MHz; circular polarization; matching technique; satellite communication; Antenna radiation patterns; Electromagnetics; Frequency measurement; Helical antennas; Impedance matching; Impedance measurement; Particle measurements; Power measurement; Satellite antennas; Satellite communication; circular polarization; low weight; quadrifilar helical antenna; satellite communication;
Conference_Titel :
Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting, 2009. ANTEM/URSI 2009. 13th International Symposium on
Conference_Location :
Toronto, ON
Print_ISBN :
978-1-4244-2979-0
Electronic_ISBN :
978-1-4244-2980-6
DOI :
10.1109/ANTEMURSI.2009.4805055
