Automatic tuning for linearly tunable filter

Show full item record

Title: Automatic tuning for linearly tunable filter
Author: Huang, Sung-Ling
Abstract: A new tuning scheme for linearly tunable high -Q filters is proposed . The tuning method is based on using the phase information for both frequency and Q factor tuning . There is no need to find out the relationship between a filter's passband magnitude and Q . A gm -C biquadratic filter is designed to demonstrate the proposed tuning circuitry . The project includes a phase locked loop (PLL ) based frequency tuning loop , reference clock generator , and differential difference amplifier (DDA ) for dealing with frequency and Q factor tuning loop and linearly tunable second order gm -C bandpass filter . Simulation results for a 10 MHz prototype filter using AMI 0 .5 ?m process is presented . The chip testing results show that the automatic frequency tuning error is 2 .5 % for the 10 MHz case .
URI: http : / /hdl .handle .net /1969 .1 /35
Date: 2004-09-30

Citation

Automatic tuning for linearly tunable filter. Available electronically from http : / /hdl .handle .net /1969 .1 /35 .

Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show full item record

Search DSpace

Advanced Search

Browse