Canonic structures of odd-order elliptic Gm-C filters

In the paper, novel canonic structures of odd-order continuous-time elliptic G_m-C filters are proposed and discussed. The structures are characterized by very small number of components, especially transconductance amplifiers. This makes them suitable for low-power and low-sensitivity applications. A detailed comparison of the novel third order structure and other implementations such as leap-frog with distributed input and leap-frog with floating capacitor is carried out including sensitivity and other properties important for IC implementation.