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Two-dimensional array beam scanning via externally and mutually injection-locked coupled oscillators

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1 Author(s)
R. J. Pogorzelski ; Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA

The use of arrays of injection-locked voltage-controlled oscillators coupled to nearest neighbors has been proposed as a means of controlling the aperture phase of one and two-dimensional (2-D) phased-array antennas. It has been demonstrated both theoretically and experimentally that one may achieve linear distributions of phase across a linear array aperture by injection locking to an external oscillator the end oscillators of an array of a mutually injection-locked oscillators. These linear distributions cause steering of the radiated beam. It is demonstrated theoretically here that one may achieve beamsteering in a similar manner in two dimensions by injecting appropriately phased signals into the perimeter oscillators of a 2-D array. The analysis is based on a continuum representation of the phase previously developed in the context of beamsteering via tuning of the perimeter oscillators

Published in:

IEEE Transactions on Antennas and Propagation  (Volume:49 ,  Issue: 2 )