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Millimeter-Wave Wirelessly-Powered Phased-Array Relay Transceiver Utilizing CMOS Switching Rectifier-Type Mixer Open

Sena Kato, Keito Yuasa, Michihiro Ide, Kenichi Okada, Atsushi Shirane · 2025

A 2.5 dB noise figure 28 GHz current-reused noise-cancelling LNA with g<sub>m</sub>-boosting in 65 nm CMOS for millimeter-wave MIMO applications Open

Yi Zhang, Minzhe Tang, Dongfan Xu, J.C. Pang, Hiroyuki Sakai , et al. · 2025

A synthesizable spread spectrum clock generator based on type-II/III fractional-<i>N</i> DPLL Open

Waleed Madany, Hóngyè Huáng, Bangan Liu, Ashbir Aviat Fadila, Zezheng Liu , et al. · 2024

Guest Editorial Introduction to the Special Section on the 2023 RFIC Symposium Open

Kenichi Okada · 2024

This special section of the IEEE Journal of Solid-State Circuits presents the expanded versions of selected articles presented at the 2023 Radio Frequency Integrated Circuits Symposium (RFIC) held in San Diego, CA, USA, during June 11–13, …

Publisher Correction: Ready-to-transfer two-dimensional materials using tunable adhesive force tapes Open

Maki Nakatani, Satoru Fukamachi, Pablo Solís‐Fernández, Satoshi Honda, Kenji Kawahara , et al. · 2024

Millimeter-Wave Transceiver Utilizing On-Chip Butler Matrix for Simultaneous 5G Relay Communication and Wireless Power Transfer Open

Keito Yuasa, Michihiro Ide, Sena Kato, Kenichi Okada, Atsushi Shirane · 2024

This paper introduces a wireless-powered relay transceiver designed to extend 5G millimeter-wave coverage. It employs an on-chip butler matrix, enabling beam control-free operation. The prototype includes PCB array antennas and on-chip but…

Design of Synthesizable Digital Phase Locked Loops Open

Yuncheng Zhang, Kenichi Okada · 2024

A 41-GHz 19.4-dBm P<sub>sat</sub> CMOS Doherty power amplifier for 5G NR applications Open

Zheng Li, Zixin Chen, Qiaoyu Wang, Junqing Liu, Jian Pang , et al. · 2023

In this letter, a 41-GHz Doherty power amplifier (PA) in standard 65nm CMOS technology is introduced for 5G New Radio (NR) applications. The proposed PA implements the transformer-based parallel-combined Doherty structure to enhance the po…

A 39-GHz CMOS Bidirectional Doherty Phased- Array Beamformer Using Shared-LUT DPD With Inter-Element Mismatch Compensation Technique for 5G Base Station Open

Zheng Li, Jian Pang, Yi Zhang, Yudai Yamazaki, Qiaoyu Wang , et al. · 2023

This article demonstrates a 39-GHz CMOS phased-array beamformer aiming for power-efficient and area-efficient fifth-generation (5G) dual-polarized multiple-in–multiple-out (DP-MIMO) applications. To address the digital pre-distortion (DPD)…

IEEE Journal of Solid-State Circuits Publication Information Open

Joseph B. Long, Emre Ayranci, T.S. Fiez, A Greenberg, A Stmicroelectronics , et al. · 2022

IEEE Journal of Solid-State Circuits Publication Information Open

Joseph B. Long, Emre Ayranci, T.S. Fiez, A Greenberg, A Stmicroelectronics , et al. · 2022

IEEE JOURNAL OF SOLID-STATE CIRCUITS Open

Joseph B. Long, Emre Ayranci, T.S. Fiez, A Greenberg, A Stmicroelectronics , et al. · 2022

IEEE JOURNAL OF SOLID-STATE CIRCUITS Open

J. L. Long, Emre Ayranci, T.S. Fiez, A Greenberg, A Stmicroelectronics , et al. · 2022

IEEE JOURNAL OF SOLID-STATE CIRCUITS Open

Jiang Long, Emre Ayranci, T.S. Fiez, A Greenberg, A Stmicroelectronics , et al. · 2022

A Bi-Directional 300-GHz-Band Phased-Array Transceiver in 65-nm CMOS With Outphasing Transmitting Mode and LO Emission Cancellation Open

Ibrahim Abdo, Carrel da Gomez, Chun Wang, Kota Hatano, Qi Li , et al. · 2022

This article introduces a four-element 300-GHz-band bi-directional phased-array transceiver (TRX). The TRX utilizes the same antenna, signal path, and local oscillator (LO) circuitry to operate either in transmitter (TX) mode or receiver (…

IEEE JOURNAL OF SOLID-STATE CIRCUITS Open

J. L. Long, Emre Ayranci, T.S. Fiez, A Greenberg, A Stmicroelectronics , et al. · 2022

A low-power digital baseband circuit for GMSK demodulation in sub-GHz application Open

Junjun Qiu, Bangan Liu, Yuncheng Zhang, Atsushi Shirane, Kenichi Okada · 2022

This paper proposed a digital synthesizable GMSK receiver baseband circuit for the Sub-GHz transceiver. The proposed digital baseband(DBB) circuit is composed of carrier recover, timing recovery, and demodulation blocks. An improved polari…

IEEE JOURNAL OF SOLID-STATE CIRCUITS Open

J. L. Long, Emre Ayranci, T.S. Fiez, A Greenberg, A Stmicroelectronics , et al. · 2022

IEEE Journal of Solid-State Circuits Open

J. L. Long, Emre Ayranci, T.S. Fiez, A Greenberg, A Stmicroelectronics , et al. · 2022

A 32-kHz-Reference 2.4-GHz Fractional-<i>N</i> Oversampling PLL With 200-kHz Loop Bandwidth Open

Junjun Qiu, Zheng Sun, Bangan Liu, Wenqian Wang, Dingxin Xu , et al. · 2021

In this article, a mixed–signal, 32-kHz reference-based 2.4-GHz fractional- over-sampling phase-locked loop (OSPLL) is proposed. Different from the conventional sampling PLL, which only uses zero-crossing timing information of the refere…

64QAM wireless link with 300GHz InP-CMOS hybrid transceiver Open

Ibrahim Abdo, Hiroshi Hamada, Hideyuki Nosaka, Atsushi Shirane, Kenichi Okada · 2021

This letter presents a 300GHz hybrid transceiver using CMOS and InP-HEMT, which achieves a maximum data rate of 56Gb/s. A 300GHz CMOS transceiver with a mixer-last transmitter mixer-first receiver is utilized to up- and down-convert the V-…

A <i>Ka</i>-Band SATCOM Transceiver in 65-nm CMOS With High-Linearity TX and Dual-Channel Wide-Dynamic-Range RX for Terrestrial Terminal Open

Yun Wang, Dongwon You, Xi Fu, T. Nakamura, Ashbir Aviat Fadila , et al. · 2021

In this article, a -band satellite communication (SATCOM) transceiver is first presented using a standard CMOS technology. The proposed -band SATCOM transceiver consists of a high-linearity transmitter (TX) and dual-channel receiver (RX)…

Ultra-Lightweight Deployable Antenna Membrane Technology for Future Non-terrestrial 6G Network and Earth Observation Open

Atsushi Shirane, Takashi Tomura, Hiraku Sakamoto, Kenichi Okada · 2021

A deployable antenna membrane is one of the promising solutions to achieve a higher speed of satellite communication and earth observation in small satellites. Unlike conventional deployable antennas, the proposed approach permits low flat…

Development of a Multifunctional Lightweight Membrane with a High Specific Power Generation Capacity Open

Tetsuya Kusumoto, Masanori Matsushita, Yuki Takao, Ahmed Kiyoshi Sugihara, Osamu Mori , et al. · 2021

As a lighter power generation system, Japan Aerospace Exploration Agency (JAXA) and Sakase Adtech Corp. are developing a demonstrator component named “Harvesting Energy with Lightweight Integrated Origami Structure” (HELIOS), which is a de…

A Fully Synthesizable Fractional-<i>N</i> MDLL With Zero-Order Interpolation-Based DTC Nonlinearity Calibration and Two-Step Hybrid Phase Offset Calibration Open

Bangan Liu, Yuncheng Zhang, Junjun Qiu, Huy Cu Ngo, Wei Deng , et al. · 2020

In this paper, a fully-synthesizable digital-to-time (DTC)-based fractional-N multiplying delay-locked loop,(MDLL) is presented. Noise and linearity of synthesizable DTCs are analyzed, and a two-stage synthesizable DTC is proposed in which…

Ultralow-Power Class-C Complementary Colpitts Crystal Oscillator Open

Zule Xu, Noritoshi Kimura, Kenichi Okada, Masaya Miyahara · 2020

This letter presents a 24-MHz ultralow-power and lowphase-noise complementary Colpitts crystal oscillator. Class-C operation is realized by biasing the oscillator always in the weak-inversion region with the proposed circuit. A Langasite-t…

A 265-$\mu$ W Fractional-${N}$ Digital PLL With Seamless Automatic Switching Sub-Sampling/Sampling Feedback Path and Duty-Cycled Frequency-Locked Loop in 65-nm CMOS Open

Hanli Liu, Atsushi Shirane, Kenichi Okada, Zheng Sun, Hóngyè Huáng , et al. · 2019

This article proposes a fractional-N digital phase-locked loop (DPLL) that achieves a 265-μW ultra-lowpower operation. The proposed switching feedback can seamlessly change the DPLL from sampling operation to sub-sampling operation without…

A Pulse-Tail-Feedback LC-VCO with 700Hz Flicker Noise Corner and -195dBc FoM Open

Aravind Tharayil Narayanan, Kenichi Okada · 2019

This paper proposes a pulse-tail-feedback VCO, in which the tail transistor is driven using pulse-shaped voltage signals with rail-to-rail swing. The proposed pulse-tail-feedback (PTFB) VCO relies on reducing the current conduction period …

Circuits Evening Panel Discussion: Technology We Will See Coming Out of the Tokyo Olympics and Beyond Open

Masanori Natsui, Kenichi Okada, K Hamashita, Jacob K. Jensen, Intel Corp , et al. · 2019

The upcoming Olympic Games in Tokyo will feature not only the world's best athletes, but also the world's newest technologies.Many new and exciting technologies will be previewed for the world to see, including 5G, IoT, AI, autonomous vehi…

Joint Evening Panel Discussion The Semiconductor Industry at a Tipping Point: What's Next? Open

P.L. Yue, Hong Kong, Masaki Kobayashi, Kenichi Okada, Greg Yeric , et al. · 2019

The field that has transformed the world and which we have annually gathered to celebrate is undergoing a metamorphosis.Economics no longer inexorably points down Moore's curve, price per gate has leveled or is rising.The leading edge node…

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