Calibration

  • No Comments

248-GHz Subharmonic Mixer Last Transmitter With I/Q Imbalance and LO Feedthrough Calibration
248-GHz Subharmonic Mixer Last Transmitter With I/Q Imbalance and LO Feedthrough Calibration 150 150
Author(s): Seunghoon Lee, Junhyeong Kim, Kangseop Lee, Ho-Jin Song

Abstract:

This letter presents a 248 GHz compact direct-conversion transmitter with IQ and LO feedthrough (LOFT) calibration capability, which can achieve a data rate of 20-Gb/s with 16-QAM. The transmitter design incorporates a subharmonic double-balanced mixer configuration, simplifying the complexity of the local oscillator (LO) chain. Furthermore, a Wilkinson power divider …

Published in: IEEE Solid-State Circuits Letters
Page(s): 159 – 162
Year of Publication: 2024
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2024.3387285
Publisher: IEEE

View on IEEE Xplore

  • No Comments

A Fully Integrated Digital LDO With Adaptive Sampling and Statistical Comparator Selection
A Fully Integrated Digital LDO With Adaptive Sampling and Statistical Comparator Selection 150 150
Author(s): Shun Yamaguchi, Takashi Hisakado, Osami Wada, Mahfuzul Islam

Abstract:

Digital LDOs are gaining attention for their operation with small output capacitance. Adaptive sampling with a large frequency scaling ratio is required for fast transient response with low-power operation. Furthermore, the design of a fluctuation detector to deal with large load steps is important. This letter describes an adaptive-sampling digital …

Published in: IEEE Solid-State Circuits Letters
Page(s): 163 – 166
Year of Publication: 2024
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2024.3385233
Publisher: IEEE

View on IEEE Xplore

  • No Comments

A Single-Ended Impedance-Matched Transmitter With Single Ring-Oscillator-Based Time-Domain ZQ Calibration for Memory Interfaces
A Single-Ended Impedance-Matched Transmitter With Single Ring-Oscillator-Based Time-Domain ZQ Calibration for Memory Interfaces 150 150
Author(s): Jaekwang Yun, Sangyoon Lee, Jaewook Kim, Joo-Hyung Chae, Suhwan Kim, Yong-Un Jeong

Abstract:

The proposed single-ended transmitter for memory interfaces is an impedance-matched transmitter that utilizes a single ring-oscillator-based time-domain ZQ calibration. This ZQ calibration technique eliminates the offsets by using a gain-controlled ring oscillator with late-case forcing, resulting in low maximum/average error rates. The transmitter incorporates a phase equalization method to …

Published in: IEEE Journal of Solid-State Circuits
Page(s): 1 – 12
Year of Publication: 2024
Electronic ISSN: 1558-173X
DOI: 10.1109/JSSC.2024.3375858
Publisher: IEEE

View on IEEE Xplore

Search this website