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1999•IEEE Journal of Solid-State CircuitsRequires access

An accurate center frequency tuning scheme for 450-KHz CMOS G/sub m/-C bandpass filters

Hiroshi Yamazaki, Kenichi Oishi, K. Gotoh

Open publisher page 31 citations

Abstract

This paper describes a center frequency tuning technique for a second intermediate-frequency (IF) bandpass filter. The utilization of the step signal response ensures the direct measurement of the center frequency. This tuning technique guarantees the accuracy of the design. A 450-kHz G/sub m/-C bandpass filter tuned using this technique has been developed to integrate the IF module for personal digital cellular (PDC) handsets for use in 0.35-/spl mu/m CMOS. The filter with the tuning scheme achieves a center frequency accuracy of /spl plusmn/0.5%.

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What this paper is about

This paper describes a center frequency tuning technique for a second intermediate-frequency (IF) bandpass filter. The utilization of the step signal response ensures the direct measurement of the center frequency. This tuning technique guarantees the accuracy of the design. A 450-kHz G/sub m/-C bandpass filter tuned using this technique has been developed to integrate the IF module for personal digital cellular (PDC) handsets for use in 0.35-/spl mu/m CMOS. The filter with the tuning scheme achieves a center frequency accuracy of /spl plusmn/0.5%.

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OpenAlex reports 31 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

This paper describes a center frequency tuning technique for a second intermediate-frequency (IF) bandpass filter. The utilization of the step signal response ensures the direct measurement of the center frequency. This tuning technique guarantees the accuracy of the design. A 450-kHz G/sub m/-C bandpass filter tuned using this technique has been developed to integrate the IF module for personal digital cellular (PDC) handsets for use in 0.35-/spl mu/m CMOS. The filter with the tuning scheme achieves a center frequency accuracy of /spl plusmn/0.5%.

Key concepts: Band-pass filter, Center frequency, Electronic engineering, CMOS, Filter (signal processing), Voltage-controlled filter, SIGNAL (programming language), Prototype filter

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