RF CMOS active inductor band pass filter with post fabrication calibration

Authors: Saiyu Ren, Chris Benedik

Abstract:
This paper presents an active inductor bandpass filter (BPF) architecture with selectable 50 driving capability and postfabrication calibration for gain, center frequency, and quality factor. The design details, and performance assessmentthatfacilitate selecting an offline calibration mode to measure and tune post fabrication BPF performance are discussed. A specific design example for a L1/L2 channel GPS receiver is included with a BPF that is required to pass the L2 signal centered at 1.227 GHz with a gain of approximately16 dB at the center frequency, have a 3 dB bandwidth of 30 MHz (Q = 41) and rejection of the L1 signal at 1.575 GHz by at least 60 dB relative to the center frequency. A multistage active inductor BPF 90 nm CMOS design is presented that meets these specifications with typical process parameters. It is demonstrated that the post fabrication design based on typical corner analysis can be re-tuned to the desired performance for process variations across the slow and fast corners using the offline measuring and tuning control inputs.

Keywords:
Active inductor
Bandpass filter
Calibration
Corner analysis

Published in: AEÜ-International Journal of Electronics and Communications (Volume 67, Issue 12, December  2013)

Publisher: Elsevier

ISSN Information: 1434-8411

RF CMOS active inductor band pass filter with post fabrication calibration

Bình luận của bạn

*

*

*

*

 Captcha

Gửi bình luận nhập lại