Performance of Coupled-Oscillator Arrays With Angle-Modulated Injection Signals

Ana Collado*, Apostolos Georgiadis

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


A nonlinear analysis of coupled-oscillator systems under modulated inputs is presented. Angle modulation is introduced to the array by injection locking one of the oscillators to an external modulated reference signal. Envelope transient analysis is used to investigate the effect of the modulation versus scanning angle. Furthermore, a simplified model for the array is provided based on a perturbation of the single-oscillator free-running steady state. In addition, arrays transmitting at the second harmonic are also examined, allowing for extended scanning range. Results are verified by measuring the performance of a fabricated two-element array operating at 4.5 GHz.

Original languageEnglish
Pages (from-to)2343-2352
Number of pages10
JournalIEEE Transactions on Circuits and Systems I: Regular Papers
Issue number9
Publication statusPublished - Sept 2010


  • Beam steering
  • coupled-oscillator arrays (COAs)
  • envelope transient (ET)
  • harmonic balance (HB)
  • injection
  • injection locking
  • modulation


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