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A low weight S-band quadrifilar helical antenna for satellite communication

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4 Author(s)
Chapari, A. ; Electr. Eng. Dept., Amirkabir Univ. of Technol., Tehran ; Firouzeh, Z.H. ; Moini, R. ; Sadeghi, S.H.H.

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.

Published in:

Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting, 2009. ANTEM/URSI 2009. 13th International Symposium on

Date of Conference:

15-18 Feb. 2009