Design and development of Tappered Spiral Helix Antenna for Broadband Applications
Journal Title: International Journal of Science Engineering and Advance Technology - Year 2013, Vol 1, Issue 4
Abstract
The Aim of the paper is to design and develop a tapered spiral helix antenna covering the frequency range 1- 18GHz. Tappered spiral helix antenna is a compact state-ofthe-art circularly polarized antenna, which works over multi-octave frequency bandwidth(1-18GHz). The antenna size has been reduced by 50 percent with respect to conventional spiral antenna used for same frequency band. This antenna adequately satisfies all of the generally standardized physical constraints and limitations placed upon airborne platforms. The spiral helix consists of a spiral antenna with a spiral radiator, the balanced to unbalanced (balun) transformer, backing cavity and a helical antenna where the outer ends of spiral antenna are terminated with a helix. The helix is placed with its axis at90â° to the spiral lies behind it is designed to produce circularly polarized radiation over a range from 1-18GHz. In general spiral helix antenna provide frequency coverage unattainable in a single device. The design of spiral circuit will be done using a computer generated program in MATLAB software. The design of helix is done in CST studio suite software and finally spiral and helical antennas are combined as single antenna and simulated in CST. The simulated results are compared with aimed specifications.
Authors and Affiliations
D. Arun Kumar| Assistant Professor, ECE Department, GMRIT, RAJAM arundhupam@gmail.com
Keywords
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