Summary
International Symposium on Antennas and Propagation
2008
Session Number:3C19
Session:
Number:3C19-3
Compact Wide Band Double Helical Antenna for Public Safety VHF Band
Ooi Soo Liam, Por Chee Seong,
pp.-
Publication Date:2008/10/27
Online ISSN:2188-5079
Summary:
The VHF band for Public Safety radios covering 136 MHz to 174 MHz is a popular continuous band for the public safety market. Popular models in the market includes Motorola XTS5000, Kenwood TK272G, TK2160, RELM BK KNG P150, iCom IC-F50V, and Datron SCVHF1, just to name a few, are VHF wide band radios covering the whole of 38 MHz bandwidth. However, very few of these radios are equipped with narrow band antennas covering a third of the required bandwidth. This paper describes the concept and implementation of a iconic design covering the 24.5% bandwidth factor, using the concept of double helix. The measured result of a relatively short ( 17 cm ) version of the design is presented.