Title :
Simple adaptive heterodyne filter
Author :
Veedu, Biju Mullul ; Soderstrand, Michael
Author_Institution :
Sch. of Electr. & Comput. Eng., Oklahoma State Univ., Stillwater, OK, USA
Abstract :
The tuning of the band pass filter in the simple heterodyne filter structure can be done over a range of 90-degrees by changing the heterodyne frequency. However in this, the heterodyne frequency is constant and can be made adaptive by introducing a Numerical Controlled Oscillator. The proposed design structure uses the Numerical Controlled Oscillator output that can be used as the heterodyne frequency so as to tune the band pass filter effectively.
Keywords :
adaptive filters; band-pass filters; circuit tuning; heterodyne detection; oscillators; adaptive heterodyne filter; band pass filter tuning; numerical controlled oscillator; Adaptive filters; Band pass filters; Communication system control; Equations; Frequency; Low pass filters; Oscillators; Programmable control; Signal generators; Tuning;
Conference_Titel :
Circuits and Systems, 2002. MWSCAS-2002. The 2002 45th Midwest Symposium on
Print_ISBN :
0-7803-7523-8
DOI :
10.1109/MWSCAS.2002.1187147
