Multibeam Pattern Generation Using Coupled Oscillator Arrays
Conference: EuCAP 2009 - 3rd European Conference on Antennas and Propagation
03/23/2009 - 03/27/2009 at Berlin, Germany
Proceedings: EuCAP 2009
Pages: 4Language: englishTyp: PDFPersonal VDE Members are entitled to a 10% discount on this title
Georgiadis, Apostolos (Communications Subsystems, Centre Tecnologic de Telecomunicacions de Catalunya, Av. Canal Olimpic s/n 08860 Castelldefels, Barcelona, SPAIN)
The potential of generating multibeam patterns using coupled oscillator arrays is demonstrated. The complex excitation values in order to synthesize a desired multibeam pattern are first determined using convex optimization. In a second step, the oscillator frequency tuning values that give the necessary excitation phases are obtained with harmonic balance simulations. The oscillator amplitudes are free to evolve according to the system dynamics. Once the steady state is determined, the final amplitude excitations are set using attenuators at the oscillator outputs. The stability of the solution is assured by proper design of the oscillator coupling networks and it is verified using envelope transient analysis. The possibility of scanning the dual beam pattern by detuning the free-running frequencies of the edge oscillator elements is also investigated.