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A Broadband and Compact GaN Millimeter-Wave MMIC SPDT Switch Using Modified π-Networks

A Broadband and Compact GaN Millimeter-Wave MMIC SPDT Switch Using Modified π-Networks 150 150
Author(s): Chaorong Wang, Quan Pan, Xiaohu Fang

Abstract:

This letter presents a design methodology for broadband and compact millimeter-wave (mm-wave) single-pole double-throw (SPDT) switches targeting the Ku–Ka band. Conventional SPDT switches based on quarter-wavelength transmission line typically occupy significant chip area, while alternative designs utilizing standard $\pi $ -type equivalent circuits often suffer from bandwidth degradation due to …

Published in: IEEE Solid-State Circuits Letters
Page(s): 21 – 24
Year of Publication: 2026
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2025.3646815
Publisher: IEEE

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BASS-PLL: A Bandwidth Augmented Sub-Sampling PLL Achieving a Wide Bandwidth Above 30% of the Reference Frequency and a Worst Case FoMREF of −247.9 dB at 3 GHz With a Ring Oscillator

BASS-PLL: A Bandwidth Augmented Sub-Sampling PLL Achieving a Wide Bandwidth Above 30% of the Reference Frequency and a Worst Case FoMREF of −247.9 dB at 3 GHz With a Ring Oscillator 150 150
Author(s): Tong Zhang, Yiwen Zhang, Xueke Cai, Weihao Jie, Yanling Zheng, Deyong Li, Yang Zhao, Yongfu Li, Honglan Jiang, Patrick P. Mercier, Hui Wang

Abstract:

This work presents a bandwidth augmented sub-sampling phase-locked loop (BASS-PLL) architecture that features simultaneous out-of-band noise suppression by direct and multipath sampling of the ring oscillator’s (ROs) output and in-band noise suppression via an intrinsic sub-sampling mechanism, ultimately combining the benefits of over-sampling PLLs (OS-PLLs) and sub-sampling PLLs (SS-PLLs) …

Published in: IEEE Journal of Solid-State Circuits
Page(s): 1 – 13
Year of Publication: 2025
Electronic ISSN: 1558-173X
DOI: 10.1109/JSSC.2025.3640726
Publisher: IEEE

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A Wideband Calibration-Free D-Band Passive Phase Shifter With Frequency-Invariant Codes Over 24% Fractional Bandwidth

A Wideband Calibration-Free D-Band Passive Phase Shifter With Frequency-Invariant Codes Over 24% Fractional Bandwidth 150 150
Author(s): Basem Abdelaziz Abdelmagid, Yuqi Liu, Hua Wang

Abstract:

This work presents a compact 110–140 GHz bidirectional D-band passive phase shifter based on combining a 5-stage capacitively-loaded reflective-type PS (RTPS) with a wideband 0°/180° stage. The design achieves a 360° phase range with a resolution of 11.25°. By applying: 1) a wideband RTPS design methodology on the stage level; 2) frequency/switching-staggering techniques among the …

Published in: IEEE Solid-State Circuits Letters
Page(s): 329 – 332
Year of Publication: 2025
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2025.3622233
Publisher: IEEE

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