A New Second-Order All-Pass Filter in 130-nm CMOS

作者：Ahmadi Peyman; Maundy Brent; Elwakil A S^*; Belostotski Leonid; Madanayake Arjuna

来源：IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, 2016, 63(3): 249-253.

DOI：10.1109/TCSII.2015.2482578

• Active filters
• all-pass filters
• analog circuits
• filter theory
• Q factor

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-mu m 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.

• 出版日期2016-3