Evaluation of Beam Steering in Circular Planar Array of Coupled Microwave Oscillators
A Green's function to describe the time behavior of the locking phases in a circular planar array of mutually coupled microwave oscillators is proposed. Using this Green's function the dynamic behavior of the array can be described for any arbitrary free running frequency of elements of the oscillator array. Beam steering is realized via detuning the edge oscillators of the array from a reference frequency and the beam direction is controlled by the amount of detuning for each oscillator at the edge. Some detuning functions such as sinusoidal, triangular and rectangular ones have been applied and, the resulting array patterns are compared with one another. (C) 2011 Wiley Periodicals, Inc. Int J RF and Microwave CAE 21:383-391, 2011.
beam steering green's function coupled oscillators array inter-injection locked oscillators