On the synthesis of nonuniform linear microstrip arrays: a circuit design approach

Summary form only given. A synthesis method for the design of non-uniformly spaced series-fed rectangular microstrip arrays is described. By our approach the problem of the patch array design results in one of a slot array synthesis. The resulting equivalent configuration is able to give the necessary parameters for the microstrip array geometry. According to the transmission-line model, which is used in our method, a microstrip antenna can be represented by two radiating slots, separated by a low-impedance, Z₀, transmission line of length L. When the substrate is thin the equivalent slots are uniformly excited and can be used to derive the necessary expressions for the parameters of the model. Numerical results are given for Taylor, Bayliss and secant square patterns