A Research of Circular Polarized Wave Antenna for the Improvement of Transmitting/Receiving Ability of Telemetry System

원격측정 시스템의 송수신 능력 향상을 위한 원편파 안테나 연구

An L-band omnidirectional circular polarized wave antenna is designed and evaluated for transmitting/receiving of vehicle data. Conventional linear polarized wave antenna can not reveive clearly all of the vehicle data which come from the wide driving test range on account of distortion. To overcome this problem, an omnidirectional circular polarized wave antenna is required for the design, first of all, the characteristics, design principle and theoretical background of circular polarized wave with a little signal loss have been reviewed. The designed antenna characteristics an analysed and compared to the desired ones. Our results demonstrate that the strength of vehicle data is flat enough over the full test range using this new antenna.