An accurate automatic tuning scheme for high-Q continuous-time bandpass filters based on amplitude comparison Academic Article

abstract

• A new automatic tuning scheme for continuous-time high-Q-bandpass filters is presented. It is conducted by amplitude comparison at three frequencies generated by an on-chip frequency synthesizer. Theoretical analysis and experimental results are provided. Analysis shows the tuning method is suitable for bandpass filters with Q > 10. A gm - C second-order filter is designed to demonstrate the proposed tuning scheme. The test chip is fabricated in AMI 0.5-m process. The measured frequency tuning error is 0.25%, and Q-tuning error is 3% for a 200-MHz filter with a desired Q of 28.6.

authors

• Karsilayan, Aydin

published proceedings

• IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-ANALOG AND DIGITAL SIGNAL PROCESSING

author list (cited authors)

• Liu, H. S., & Karsilayan, A. I.

citation count

• 21

complete list of authors

• Liu, HS||Karsilayan, AI

publication date

• August 2003

publisher

• Institute of Electrical and Electronics Engineers (IEEE)  Publisher

published in

• n1057-7130ISSN  Journal

keywords

• Automatic Tuning
• Bandpass Filters
• Cmos Analog Integrated Circuits
• Continuous-time Filters

Digital Object Identifier (DOI)

• 10.1109/TCSII.2003.814802

start page

• 415

end page

• 423

volume

• 50

issue

• 8

URL

• http%3A%2F%2Fdx.doi.org%2F10.1109%2Ftcsii.2003.814802