Title :
Broadband active circularly polarized microstrip antennas
Author :
An, H. ; Nauwelaers, B. ; Van de Capelle, A.
Author_Institution :
Katholieke Universiteit Leuven, Dept. of Electrical Engineering, ESAT-TELEMIC, B-3001 Leuven, Belgium. Tel: +32 16 220931, Fax: +32 16 221855
Abstract :
This paper presents a novel approach for the design of broadband active circularly polarized microstrip antennas. The semi-balanced amplifier configuration is proposed for the active circuits, and the active circuits are designed to match the impedance of the patch antennas. As a result, high gain, broad gain bandwidth, wide bandwidth of polarization purity, and good input VSWR can be realised simultaneously. Two design examples show the advantages of the proposed technique.
Keywords :
Active circuits; Antenna measurements; Broadband amplifiers; Broadband antennas; Horn antennas; Microstrip antennas; Polarization; Receiving antennas; Reflector antennas; Transmitting antennas;
Conference_Titel :
Microwave Conference, 1993. 23rd European
Conference_Location :
Madrid, Spain
DOI :
10.1109/EUMA.1993.336888
