Ahmadi, PeymanMaundy, BrentElwakil, A.S.Belostotski, LeonidMadanayake, Arjuna2025-01-312025-01-312016-09Ahmadi, P., Maundy, B., Elwakil, A. S., Belostotski, L., & Madanayake, A. (2016). A new second-order all-pass filter in 130-nm CMOS. IEEE Transactions on Circuits and Systems II: Express Briefs, 63(3), 249–253. https://doi.org/10.1109/tcsii.2015.2482578https://doi.org/10.1109/TCSII.2015.2482578https://hdl.handle.net/1880/120607This brief presents a novel wide-bandwidth second-order voltage-mode all-pass filter derived from a canonical single transistor bandpass filter. The core of the circuit consists of only one transistor, two resistors, and two energy storage elements. The operation of the proposed filter is validated experimentally. A filter implemented in an IBM 0.13-μm CMOS was measured to have a 55-ps group delay across a 6-GHz bandwidth while consuming 18.5 mW from a 1.5-V supply. This work experimentally demonstrates a CMOS all-pass filter that operates at multigigahertz frequencies and achieves the highest delay-bandwidth product compared to previously published CMOS all-pass filters known to the authors.enUnless otherwise indicated, this material is protected by copyright and has been made available with authorization from the copyright owner. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/Active filtersAnalog circuitsFilter theoryAll-pass filtersQ factorArticle10.1109/TCSII.2015.2482578