Full-Duplex RF Canceler Achieving Wideband High-SI-Power Low-Noise Cancellation Through a Novel N-Path-Filter-Based Architecture and ML-Based Canceler Configuration

Lakshminarasimha Sastry Garimella; Alfred Davidson; Nishant P. Patil; Yuan Ma; Ammaar Junaid; Kaustubh Pabba; Harish Krishnaswamy

doi:10.1109/isscc49663.2026.11409260

Full-Duplex RF Canceler Achieving Wideband High-SI-Power Low-Noise Cancellation Through a Novel N-Path-Filter-Based Architecture and ML-Based Canceler Configuration

2026 IEEE International Solid-State Circuits Conference (ISSCC) 2026

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Authors: Lakshminarasimha Sastry Garimella, Alfred Davidson, Nishant P. Patil, Yuan Ma, Ammaar Junaid, Kaustubh Pabba, Harish Krishnaswamy

DOI: 10.1109/isscc49663.2026.11409260

Cited by: 1

References: 5

Abstract

We present a novel RF canceller that utilizes (i) a novel N-path-filter-based architecture that uses filter stacking to achieve passive tap combining leading to a lower NF degradation, (ii) a sub-cycle rotation technique that doubles the largest frequency shift possible in a rotary clock-path passive-frequency-shifting technique enabling wideband SIC, and (iii) an ML-based canceler configuration algorithm that requires only a limited number of canceller measurements.

Fields of Study & Subjects

Full-Duplex Wireless Communications Radio Frequency Integrated Circuit Design Advanced Power Amplifier Design

Publication details

Journal / source: 2026 IEEE International Solid-State Circuits Conference (ISSCC)
Publisher: IEEE
Pages: 100–102
Publication date: 15 February 2026

References 5