Frequency modulation

  • No Comments

A Fast-Settling mm-Wave LO With I/Q-Calibrated SSB Mixer and Frequency-Tuned ILO Filter Achieving Sub-ns Settling Time and −56 dBc Spur

A Fast-Settling mm-Wave LO With I/Q-Calibrated SSB Mixer and Frequency-Tuned ILO Filter Achieving Sub-ns Settling Time and −56 dBc Spur 150 150
Author(s): Jaewon Oh, Cheol So, Hyojun Kim, Songcheol Hong, SeongHwan Cho

Abstract:

This article presents a fast-settling 60-GHz local oscillator (LO) for stepped-carrier orthogonal frequency-division multiplexing (OFDM), employing an I/Q-calibrated single-sideband (SSB) mixer with a frequency-tuned injection-locked oscillator (ILO) filter. The SSB mixer enables instantaneous frequency hopping, while the ILO acts as a high- $Q$ bandpass filter that suppresses mixer-induced spurs. …

Published in: IEEE Journal of Solid-State Circuits
Page(s): 1 – 14
Year of Publication: 2025
Electronic ISSN: 1558-173X
DOI: 10.1109/JSSC.2025.3634591
Publisher: IEEE

View on IEEE Xplore

  • No Comments

An Energy-Efficient CNN Processor Supporting Bi-Directional FPN for Small-Object Detection on High-Resolution Videos in 16-nm FinFET

An Energy-Efficient CNN Processor Supporting Bi-Directional FPN for Small-Object Detection on High-Resolution Videos in 16-nm FinFET 150 150
Author(s): Yu-Chun Ding, Chia-Yu Chang, Hui-Yun Tsai, Chun-Yeh Lin, Hao-Jiun Tu, Yu-Ching Su, Kai-Feng Chang, Tsung-Han Hsieh, Wen-Ching Chen, Nian-Shyang Chang, Chun-Pin Lin, Chi-Shi Chen, Chao-Tsung Huang

Abstract:

The capability to detect small objects precisely in real time is essential for intelligent systems, particularly in advanced driver assistance systems (ADASs), as it ensures continuous awareness of distant obstacles for enhanced safety. However, achieving high detection precision for small objects requires high-resolution input inference on deep convolutional neural network (…

Published in: IEEE Journal of Solid-State Circuits
Page(s): 1 – 12
Year of Publication: 2025
Electronic ISSN: 1558-173X
DOI: 10.1109/JSSC.2025.3628249
Publisher: IEEE

View on IEEE Xplore

  • No Comments

A 0.4-V 32-kHz Pulse-Injection Temperature-Compensated Crystal Oscillator With Sub-Cycle CL Modulation and DLL-Reused Temperature Sensor

A 0.4-V 32-kHz Pulse-Injection Temperature-Compensated Crystal Oscillator With Sub-Cycle CL Modulation and DLL-Reused Temperature Sensor 150 150
Author(s): Haihua Li, Pui-In Mak, Rui P. Martins, Ka-Meng Lei

Abstract:

This article presents a 0.4-V 32 kHz pulse-injection (PI) temperature-compensated crystal oscillator (TCXO) that incorporates subcycle capacitive load ( $C_{\text {L}}$ ) modulation for frequency compensation. The proposed TCXO compensates for the crystal’s frequency deviation ( $\Delta f$ ) by dynamically adjusting the enabling duration of the additional $C_{\text {L}}$ within each …

Published in: IEEE Journal of Solid-State Circuits
Page(s): 1 – 13
Year of Publication: 2025
Electronic ISSN: 1558-173X
DOI: 10.1109/JSSC.2025.3620824
Publisher: IEEE

View on IEEE Xplore

  • No Comments

A Battery-Free BLE Backscatter Communication Chip for Wearable Systems

A Battery-Free BLE Backscatter Communication Chip for Wearable Systems 150 150
Author(s): Yongling Zhang, Ji Xiong, Junzai Chen, Xiaoyu Li, Jinrui Zuo, Yan Wang, Xiaoyi Wang, Miao Meng

Abstract:

This letter presents a backscatter chip that features bidirectional communication with commodity bluetooth low-energy (BLE) transceivers. For uplink, the chip reflects a reverse-whitened BLE tone into single-sideband (SSB) GFSK-modulated BLE packets via a proposed replica VCO-based GFSK modulator and an inductor-free SSB reflector. For downlink, the BLE packets are frequency …

Published in: IEEE Solid-State Circuits Letters
Page(s): 297 – 300
Year of Publication: 2025
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2025.3612423
Publisher: IEEE

View on IEEE Xplore

  • No Comments

A Fully-Dynamic Capacitive Touch Sensor With Tri-level Energy Recycling and Compressive Sensing Technique

A Fully-Dynamic Capacitive Touch Sensor With Tri-level Energy Recycling and Compressive Sensing Technique 150 150
Author(s): Xiangdong Feng, Zhiyu Wang, Haoyang Li, Jiaqing Li, Wei-Chin Lin, Xin Hu, Zhong Tang, Yuyan Liu, Qinwen Fan, Yuxuan Luo, Bo Zhao

Abstract:

Capacitive touch screens have become the dominant user interface over the past decade. Achieving high framerates with low power consumption remains a critical design goal for touch systems. The conventional charge-recycling technique reduces driving power by 64%, but it relies on off-chip capacitors. To address this issue, we propose a tri-level …

Published in: IEEE Solid-State Circuits Letters
Page(s): 1 – 1
Year of Publication: 2025
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2025.3612093
Publisher: IEEE

View on IEEE Xplore

Search this website