Electronically Tunable Third-Order Switched-Capacitor Filter with Feedforward Signal to Minimize Overshoot

Electronically Tunable Third-Order Switched-Capacitor Filter with Feedforward Signal to Minimize Overshoot

Adnan Abdullah Qasem

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G. N. Shinde

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α Swami Ramanand Teerth Marathwada University

Electronically Tunable Third-Order Switched-Capacitor Filter with Feedforward Signal to Minimize Overshoot

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Abstract

The study proposes an Electronically Tunable Third-Order Switched-Capacitor Filter with Feedforward Signal to minimize Overshoot Configuration. This circuit is designed for center frequency f 0 =15 KHz. The proposed circuit discusses a new configuration to realize third-order with three filter functions low-pass, band-pass, and high-pass simultaneously in single circuit. The circuit uses OP-AMP and MOSFET with Capacitor as Switched-Capacitor. The response of circuit is studied for different circuit merit factor Q and center frequency f 0 =15 KHz. The filter circuit can be used for both narrow as well as for wide bandwidth, Also, this circuit works for electronically tunable bandwidth. The gain roll-off for this circuit is close to the ideal value of 18 dB / octave (40dB/ decade) as for third order filters. This filter configuration shows better response for Q ≥ 0.4. Also, stabilization of gain for High -pass filter function can be achieved at 0dB for Q≥0.4. In the proposed circuit configuration, the peak gain for overshoot is minimizing from 44dB to 5dB due to the feedforward input signal. The Low-pass filter function works practically only for higher merit factor Q. The circuit shows better response for Q ≥ 0.4 and f 0 =15 kHz.

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15 Cites in Article

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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

Adnan Abdullah Qasem. 2014. \u201cElectronically Tunable Third-Order Switched-Capacitor Filter with Feedforward Signal to Minimize Overshoot\u201d. Global Journal of Research in Engineering - F: Electrical & Electronic GJRE-F Volume 14 (GJRE Volume 14 Issue F7): .

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GJRE Volume 14 Issue F7
Pg. 1- 5

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Journal Specifications

Crossref Journal DOI 10.17406/gjre

Print ISSN 0975-5861

e-ISSN 2249-4596

Keywords

cut-off frequency electronically tunable merit factor q pass band third-order switched-capacitor

Submission ReceivedDecember 7, 2013
Peer Review Double Blind
Handling Editor
Accepted January 3, 2014
Published January 15, 2014

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v1.2

Issue date

September 20, 2014

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Article Matrices

Total Score: 102

Country: India

Subject: Global Journal of Research in Engineering - F: Electrical & Electronic

Authors: Adnan Abdullah Qasem, G. N. Shinde (PhD/Dr. count: 0)

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