Loop filter for data converter in wireless communication system and method of implementing corresponding loop filter

摘要

Provided is a loop filter for a data converter in a wireless communication system that improves both an anti-aliasing filtering characteristic and a power consumption characteristic, the loop filter including first and third resistors sequentially connected to an input end, fourth and second resistors sequentially connected to between an inverting output end and ground, a first capacitor connected to between another end of the first resistor and one end of the fourth resistor, a second capacitor connected to between the one end of the fourth resistor and the output end, a third capacitor connected to between another end of the third resistor and the output end, and an operational amplifier, wherein an inverting end of the operational amplifier is connected to the other end of the first resistor and a non-inverting end of the operational amplifier is connected to ground to output an operational amplifier response to the output end.

主权项

1. A loop filter for a data converter in a wireless communication system, the loop filter comprising:
first and third resistors sequentially connected to an input end; fourth and second resistors sequentially connected to between an inverting output end and ground; a first capacitor connected to between another end of the first resistor and one end of the fourth resistor; a second capacitor connected to between the one end of the fourth resistor and the output end; a third capacitor connected to between another end of the third resistor and the output end; and an operational amplifier configured to output an operational amplifier response to the output end, wherein an inverting end of the operational amplifier is connected to the other end of the first resistor and a non-inverting end of the operational amplifier is connected to ground.