Rectangular and circular arrays with independently controlled beamwidth and sidelobe level

A simple method for the synthesis of rectangular and circular antenna arrays with independently specified beamwidth and sidelobe level is presented. It makes use of the Taylor one-parameter design method, and thus the resulting arrays have decaying sidelobes. Knowing that the array factor of the rectangular array is the product of the array factors of two linear arrays, the rectangular array is obtained by separately designing the two constituent linear arrays, each with the desired beamwidth and sidelobe level. On the other hand, an existing method can make the transformation between a a circular array and a virtual linear array. After relating the beamwidth of the circular array to that of the virtual linear array, this transformation method is used to synthesize a circular array with the wanted beamwidth and sidelobe level. Examples are given to validate the presented method for the two array types.