Synthesis of a complex (RCR)-C-i filter with finite transmission zeros
This paper describes synthesis of a complex (RCR)-C-i filter with a finite transmission zero except zero frequency. The frequency response of the proposed filter is similar to the conventional elliptic filter. The proposed filter can be composed of fewer elements than the conventional one. A new kernel function is proposed. As an example, a fifth-order (RCR)-C-i filter is designed. We compare the proposed filter with the conventional complex elliptic filter from the viewpoint of the frequency response and the number of the required elements.
complex (rcr)-c-i filter finite transmission zero equiripple