Coupled oscillator array generating circular polarization
Résumé
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.
Mots clés
coupled circuits
electromagnetic wave polarisation
active antenna arrays
microwave oscillators
coupled oscillator array
circular polarization generation
four-element oscillator array
linearly polarized elements
loop arrangement
unidirectional coupling
radiation pattern measurements
wide axial ratio beamwidth
principal plane
diagonal planes
active antenna array
4 GHz
Polarization
Microstrip antenna arrays
Phased arrays
Coupling circuits
Injection-locked oscillators
Bandwidth
Feeds
Equations
Antenna radiation patterns
Microstrip antennas