A New Second-Order All-Pass Filter in 130-nm CMOS
Open accessAbstract
This 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.
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The factor e−jωτ associated with analog DVM beamforming can be efficiently approximated on chip by CMOS APFs.
“The factor e−jωτ is associated with the factorization of the AN and can be efficiently approximated on chip by CMOS APFs [7,8,9,10,11,48,49].”
From Thiran Filters for Wideband DSP-Based Multi-Beam True Time Delay RF Sensing Applications (2024) · cites this paper as [49]
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Ariyarathna, V., Udayanga, N., Madanayake, A., Perera, S. M., Belostotski, L., & Cintra, R. J. (2017) · 2017 Moratuwa Engineering Research Conference (MERCon) · doi:10.1109/mercon.2017.7980488 · Cited by 11 · see citing works
Self-citationA Fast DVM Algorithm for Wideband Time-Delay Multi-Beam Beamformers
Perera, S. M., Lingsch, L., Madanayake, A., Mandal, S., & Mastronardi, N. (2022) · IEEE Transactions on Signal Processing · doi:10.1109/tsp.2022.3231182 · Cited by 11 · see citing works
Self-citationThiran Filters for Wideband DSP-Based Multi-Beam True Time Delay RF Sensing Applications
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- Authors
- Ahmadi, P., Maundy, B., Elwakil, A. S., Belostotski, L., & Madanayake, A.
- Affiliations
- University of Calgary (CA)
- University of Sharjah (AE)
- University of Akron (US)
- Venue
- IEEE Transactions on Circuits and Systems II: Express Briefs
- Published
- 2016-03
- Volume
- 63
- Issue
- 3
- Pages
- 249-253
- ISSN
- 1549-7747 (ISSN-L)
- 1558-3791
- OpenAlex
- W2291880745
- Cited by
- 59
- References
- 0
- Citations by year
- 2026: 2 · 2025: 3 · 2024: 6 · 2023: 2 · 2022: 5 · 2021: 10 · 2020: 6 · 2019: 9 · 2018: 9 · 2017: 6 · 2016: 1
- FWCI
- 2.65
- Type
- journal article
- Language
- en
- Open access
- green
- doi.org
- Locations
- IEEE Transactions on Circuits & Systems II Express Briefs (publishedVersion)
- Libraries and Cultural Resources (University of Calgary) (publishedVersion, cc-by-nc-nd)
- Topics
- Physical Sciences › Engineering › Biomedical Engineering › Analog and Mixed-Signal Circuit Design
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Radio Frequency Integrated Circuit Design
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Low-power high-performance VLSI design
- Keywords
- all-pass filter, second-order filters, voltage-mode filter, group delay, bandwidth-delay product, low-power analog circuits, 130 nm CMOS
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