On-chip tuning of RF active filters

Win Chaivipas
Royal Institute of Technology, Sweden

Magnus Danestig
Acreo AB, Sweden

Mohammed Ismail
Royal Institute of Technology, Sweden \ Spirea AB, Sweden

Henrik Johansson
Acreo AB, Sweden

Laurent Billonnet
IRCOM, UMR, France

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Ingår i: GigaHertz 2003. Proceedings from the Seventh Symposium

Linköping Electronic Conference Proceedings 8:29, s.

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Publicerad: 2003-11-06


ISSN: 1650-3686 (tryckt), 1650-3740 (online)


A thorough study of a master-slave tuning of an active RF filter is presented. The control technique is based on the Voltage-Controlled Filter based Phase Locked-Loop (VCF-PLL) approach. A phase domain simulation model was developed to model the RF filter and it’s control circuitry; to enable fast; and relatively accurate simulation of the phase locked loop. A linear model of the complete VCF-PLL was developed for the purpose of manual analysis; and to get a better understanding of the relationship between the VCF-PLL loop-gain and loop settling accuracy. With the aid of the phase domain simulation model a silicon implementation of the VCF-PLL in 0.18 um CMOS was made. Finally; the paper ends with the conclusion and analysis of the PLL tuning error.


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[1] Win Chaivipas; Tuning of RF/Microwave Front-End Tunable Filters; Master Thesis on Electronic System Design; Stockholm; June 2003; Master Thesis IMIT/LECS-2003-28; Department of Microelectronics and Information Technology; Royal Institute of Technology; Kungliga Tekniska Högskolan.

[2] Halen; P. V.; ”SPICE-compatible Behavioral Phase-Space Simulation Techniques for Phase- Locked Systems”; IEEE 1996

[3] Cadence Product Documentation; Affirma RF Simulator User Guide; Product Version 4.4.6; 2001: Appendix G ‘An Introduction to the PLL library’

[4] Kuo; B. Automatic Control Systems; Singapore: Prentice Hall 1997; ISBN: 981-4009-40-7

[5] Mouzannar; W. Billonnet; L.; Jarry; B.; and Guillon; P.; “A New Concept For Realising Highly Tuneable Microwave Filters Using Recursive Principles”; 28th European Microwave Conference Amsterdam 1998

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