Optimal synthesis of surface acoustic wave filters

An optimum method is proposed for synthesizing surface acoustic-wave filters employing nonrecursive digital filter design methods. The method provides an optimum solution for the entire period of the frequency response. The method is tested with filters with different bandwidths and with complex frequency responses, such as television filters. The proposed method can be employed for other multiplicative Chebyshev approximation problems in which the solution is represented as the product of fixed and optimized parts. The proposed algorithm makes an allowance for the general case of an alternating fixed function, which expands its area of application.