RESONATOR FOR FAST SIGNAL RESPONSE

摘要

PURPOSE: A resonator for responding a high speed signal is provided to obtain high gains by forming active feedback load. CONSTITUTION: A first transconductor(101) changes a voltage signal into a current signal. An LC(Resonant Circuit) tank(103) extracts only a desired frequency signal from signals outputted from the first transconductor. A second transconductor(102) increases a quality factor of the signals outputted from the LC tank. The first transconductor includes transistors changing the voltage signal into the current signal, transistors for linearity maintenance, and transistor consisting of a current source. The transistors are composed of an N-channel MOS(Metal-Oxide Semiconductor) field effect transistor.