OPERATION TRANSCONDUCTANCE AMPLIFIER FOR A FILTER DESIGNING OF A VHF BANDWIDTH CAPABLE OF EFFECTIVELY IMPROVING A QUALITY FACTOR BY INDEPENDENTLY CONTROLLING A QUALITY FACTOR IN EXISTING NAUTA OTA CIRCUIT STRUCTURE

摘要

PURPOSE: An operation transconductance amplifier for a filter designing of a vhf bandwidth is provided to gain an OTA property by using a base unit conversion cell of fewer comparing with existing Nauta OTA circuit structure.;CONSTITUTION: A first and a second parallel inverters(21,22) are respectively inputted a first and a second input voltage through an input terminal. The input terminal and an output terminal of a first intersection feedback inverter(23) are respectively connected to the output terminal of the second parallel conversion cell and the output terminal of the first parallel conversion cell. The input terminal and the output terminal of a second intersection feedback inverter(24) are respectively connected to the output terminal of the first parallel conversion cell and the output terminal of the second parallel conversion cell. A transconductance and an outputting admittance of the first parallel inverter and the second parallel inverter are similar each other. The transconductance and the outputting admittance of the first intersection feedback inverter and the second intersection feedback inverter are similar each other.;COPYRIGHT KIPO 2010