Phase noise improvement in a loop configuration of oscillating antennas

L. Dussopt (1) , Jean-Marc Laheurte (1)

1 LEAT - Laboratoire d'Electronique, Antennes et Télécommunications

Phase noise in a four-element array of oscillating antennas is analyzed for a loop configuration and a unilateral coupling topology. It is demonstrated that this structure, basically designed for circular polarization (CP) applications, also yields a 75% reduction of the near-carrier phase noise compared to a single oscillator. Experimental validation is made at 4 GHz. For this structure, deviation of the coupling phase from its nominal value has no influence on the phase noise performance.

Mots clés: electromagnetic wave polarisation; active antenna arrays; phase noise improvement; loop configuration; oscillating antennas; four-element array; unilateral coupling topology; circular polarization applications; near-carrier phase noise; phase noise performance; 4 GHz; Phase noise; Injection-locked oscillators; Phased arrays; Coupling circuits; Polarization; Linear antenna arrays; Microwave oscillators; Frequency; Microstrip antenna arrays; Steady-state

Domaines: Electromagnétisme

L. Dussopt, Jean-Marc Laheurte. Phase noise improvement in a loop configuration of oscillating antennas. IEEE Microwave and Guided Wave Letters, 2000, 10 (3), pp.111-113. ⟨10.1109/75.845714⟩. ⟨hal-00981861⟩