Title :
Coupled oscillator array generating circular polarization [active antenna]
Author :
Dussopt, Laurent ; Laheurte, Jean-Marc
Author_Institution :
Lab. d´´Electron., Univ. de Nice-Sophia Antipolis, Valbonne, France
fDate :
4/1/1999 12:00:00 AM
Abstract :
In this work, a four-element oscillator array using linearly polarized elements is designed to generate circular polarization. The oscillators are coupled in a loop arrangement with unidirectional coupling. The analysis of this new arrangement is developed and confirmed by circular polarization radiation pattern measurements showing a wide axial ratio beamwidth both in principal and diagonal planes
Keywords :
active antenna arrays; antenna radiation patterns; coupled circuits; electromagnetic wave polarisation; microstrip antenna arrays; microwave oscillators; 4 GHz; active antenna array; circular polarization generation; coupled oscillator array; diagonal planes; four-element oscillator array; linearly polarized elements; loop arrangement; principal plane; radiation pattern measurements; unidirectional coupling; wide axial ratio beamwidth; Antenna radiation patterns; Bandwidth; Coupling circuits; Equations; Feeds; Injection-locked oscillators; Microstrip antenna arrays; Microstrip antennas; Phased arrays; Polarization;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
