Title :
Automatic frequency control techniques for microwave active filters
Author :
Serhan, H. ; Jarry, B. ; Guillon, P.
Author_Institution :
IRCOM, Limoges Univ., France
Abstract :
The paper discusses Phase Locked Loop (PLL) and Magnitude Locked Loop (MLL) techniques based on voltage controlled filter (VCF), for the automatic frequency central (AFC) of active filters. Applications to a microwave planar filter are considered. Theoretical analysis, simulated and measured results are presented for both phase and magnitude control circuits enabling the filter to accurately track a reference signal.
Keywords :
active filters; automatic frequency control; microwave filters; phase locked loops; automatic frequency control; magnitude control circuit; magnitude locked loop; microwave active filter; phase control circuit; phase locked loop; planar filter; reference signal tracking; voltage controlled filter; Active filters; Analytical models; Automatic frequency control; Automatic voltage control; Centralized control; Circuit simulation; Microwave filters; Microwave theory and techniques; Phase locked loops; Signal analysis;
Conference_Titel :
Microwave Symposium Digest, 1997., IEEE MTT-S International
Conference_Location :
Denver, CO, USA
Print_ISBN :
0-7803-3814-6
DOI :
10.1109/MWSYM.1997.602886
