《Dual frequency circularly polarised microstrip antenna》.pdf

Dual frequency circularly polarised microstrip antenna R. Shavit, Y. Israeli, L. Pazin and Y. Leviatan Abstract: A dual frequency and dual circular polarisation multilayer microstrip antenna element for satellite communication is presented. The element is fed by a gap-coupled probe pin. The microstrip element exhibits a dual frequency band of operation for two orthogonal circular polarisations. A parametric study to optimise the element performance has been conducted. A prototype with dimensions that are based on the simulations has been built and tested. A good agreement between the measured and numerical results was found. 1 Introduction Microwave Studio (MWS) commercial software from Computer Simulation Technology (CST), which is based Microstrip patch antenna elements are very popular in on the method of finite integral time domain (FITD) wireless communication system applications. They offer an algorithm. A prototype of the element in Ku band has been attractive way to integrate the RF front end of the system built and tested. The agreement between the computed and with its antenna and achieve a low profile, low weight, easy the experimental results was good. to fabricate and low cost solution. The increased demand for higher transmission capacity is driving the research to 2 The element design investigate new ways to increase the microstrip antenna bandwidth or, alternatively, operate in multiple frequencies The basic structure of the proposed element operating in while using two orthogonal polarisatio