Theoretical and experimental implementation of microwave active filters using automatic frequency control techniques
- Resource Type
- Conference
- Authors
- Quintanel, S.; Serhan, H.; Jarry, B.; Billonnet, L.; Guillon, P.
- Source
- Proceedings of the IEEE - Russia Conference. 1999 High Power Microwave Electronics: Measurements, Identification, Applications. MIA-ME'99 (Cat. No.99EX289) High power microwave electronics High Power Microwave Electronics: Measurements, Identification, Applications, 1999. MIA-ME '99. Proceedings of the IEEE-Russia Conference. :IV7-I12 1999
- Subject
- Fields, Waves and Electromagnetics
Components, Circuits, Devices and Systems
Active filters
Microwave filters
Phase locked loops
Automatic voltage control
Automatic frequency control
Signal analysis
Analytical models
Circuit simulation
Phase measurement
Automatic control
- Language
The paper discusses phase locked loop (PLL) and magnitude locked loop (MLL) techniques based on voltage controlled filter (VCF), for the automatic frequency control (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.