Axial ratio improvement of an Archimedean spiral antenna over a radial AMC reflector |
| |
| Authors: | M Grelier C Djoma M Jousset S Mallégol A C Lepage X Begaud |
| |
| Institution: | 1. Institut Mines-Telecom, Telecom ParisTech??LTCI CNRS UMR 5141, 46 rue Barrault, 75634, Paris Cedex 13, France
2. Thales Syst??mes A??roport??s, 10 avenue de la 1??re DFL, 29238, Brest Cedex 3, France
|
| |
| Abstract: | This paper presents a method to improve the circular polarization of an Archimedean spiral antenna placed over a radial Artificial Magnetic Conductor (AMC). Results have been compared with the same radiating element over a more classical AMC reflector. A prototype of an Archimedean two-wire spiral antenna has been built to operate from 0.5?GHz to 6?GHz. Measurement results with this radial AMC give a relative bandwidth of 79?%, in which the broadside RHCP gain is improved. In this bandwidth the axial ratio of Archimedean spiral antenna placed over a radial AMC is less than 2?dB whereas it is higher than 3?dB with a classical cartesian shape of AMC reflector. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
