Summary
International Symposium on Antennas and Propagation
2008
Session Number:4C32
Session:
Number:4C32-4
Wide Band Whip Antenna for Public Safety 700, 800 and GPS Bands
Por Chee Seong, Ooi Soo Liam,
pp.-
Publication Date:2008/10/27
Online ISSN:2188-5079
Summary:
With the increasing importance of inter-operability and added GPS feature on Public Safety radios, wide band antennas covering major Public Safety bands are required to fulfil the market demand. In this paper, the design of a whip antenna covering the new 700 Public Safety and the traditional 800 MHz band, with the addition of linear GPS antenna feature is presented. The design utilizes the concept of helix-driven wide band monopole antenna consisting of a half wave conductor driven by a quarter wave helical antenna element [1], with the adaptation from ground plane mount to radio chassis mount, previous reported in a feasibility study covering 760 ? 870 MHz [2]. Using the concept of dual pitch helix [3], linear-polarized GPS antenna functionality is added by manipulating the driven helix to resonate at the GPS frequency of 1575 MHz.