BPSK and QPSK modulations of an oscillating antenna for transponding applications

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

1 LEAT - Laboratoire d'Electronique, Antennes et Télécommunications

An oscillating antenna allowing binary phase shift keying (BPSK) and quadrature phase shift keying (QPSK) is demonstrated. The modulating signals are applied to a PIN diode switch and an injection-locked oscillator. Experimental results are presented, including constellation diagrams of the radiated signal and typical waveforms of demodulated signals.

Mots clés: quadrature phase shift keying; BPSK; QPSK; modulations; oscillating antenna; transponding applications; binary phase shift keying; PIN diode switch; injection-locked oscillator; constellation diagrams; radiated signal; demodulated signals; UHF; 2.3 GHz; compact mechanically scanned antennas; real-time passive-millimetre-wave imaging; reflective lens; microwave frequencies; twist-polarisation techniques; wire grid polarisers; Faraday rotator; high-speed rotary scanning mechanism; linear scan pattern; roof prism; rotating disc; quarter-wave plate; real-time imager; 30 GHz

Domaines: Electromagnétisme

L. Dussopt, Jean-Marc Laheurte. BPSK and QPSK modulations of an oscillating antenna for transponding applications. IEE Proceedings Microwaves Antennas and Propagation, 2000, 147 (5), pp.335-338. ⟨10.1049/ip-map:20000401⟩. ⟨hal-00981884⟩