An RC Analog of a Double Tuned Circuit

A new passive RC analog of a coupled double tuned circuit, as is commonly used in broad-band RF amplifiers, is presented in this paper. It consists of a cascade of bandstop Wien network and a bandpass parallel-T network. A by-product of this study is that by inverting this circuit, we get a wide-band rejection circuit. By interchanging the order of the cascade, we get different frequency responses. All of these circuits are amenable for IC fabrication, and have several advantages over the existing active RC simulation circuits for the purpose.