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Kyung-Sik Choi
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A 5.5-dBm, 31.9% Efficiency 915-MHz Transmitter Employing Frequency Tripler and 207- W Synthesizer
KS Choi, KM Kim, SB Kim, BH Yun, J Ko, J Kim, SG Lee
IEEE Microwave and Wireless Components Letters 30 (1), 90-93, 2019
112019
A 915 MHz, 499 μW,–99 dBm, and 100 kbps BFSK direct conversion receiver
KM Kim, ER Jeong, KS Choi, S Kim, B Yun, H Jung, W Oh, J Ko, SG Lee
ESSCIRC 2019-IEEE 45th European Solid State Circuits Conference (ESSCIRC …, 2019
112019
A fully integrated 490-GHz CMOS heterodyne imager adopting second subharmonic resistive mixer structure
KS Choi, DR Utomo, SG Lee
IEEE Microwave and Wireless Components Letters 29 (10), 673-676, 2019
102019
An LPWAN radio with a reconfigurable data/duty-cycled-wake-up receiver
KM Kim, KS Choi, H Jung, B Yun, S Kim, W Oh, ES Lee, S Park, ER Jeong, ...
2022 IEEE International Solid-State Circuits Conference (ISSCC) 65, 404-406, 2022
92022
A sub-nW single-supply 32-kHz sub-harmonic pulse injection crystal oscillator
KM Kim, S Kim, KS Choi, H Jung, J Ko, SG Lee
IEEE Journal of Solid-State Circuits 56 (6), 1849-1858, 2020
82020
29.7 a 490GHz 32mw fully integrated CMOS receiver adopting dual-locking FLL
KS Choi, DR Utomo, KM Kim, BH Yun, SG Lee, IY Lee
2020 IEEE International Solid-State Circuits Conference-(ISSCC), 452-454, 2020
82020
A–123-dBm sensitivity split-channel BFSK reconfigurable data/wake-up receiver for low-power wide-area networks
KM Kim, HG Seok, OY Jung, KS Choi, B Yun, S Kim, W Oh, ER Jeong, ...
IEEE Journal of Solid-State Circuits 56 (9), 2656-2667, 2021
72021
Analysis and design of inductorless transimpedance amplifier employing nested feedforward noise-canceling amplifiers
H Jung, KS Choi, J Kim, SG Lee
IEEE Transactions on Microwave Theory and Techniques 70 (8), 3923-3932, 2022
62022
A 0.3-to-1-GHz IoT transmitter employing pseudo-randomized phase switching modulator and single-supply class-G harmonic rejection PA
KS Choi, J Ko, KM Kim, J Kim, SG Lee
IEEE Journal of Solid-State Circuits 57 (3), 892-905, 2021
52021
A Low-Noise and Fast-Settling UHF RFID Receiver With Digitally Controlled Leakage Cancellation
S Kim, KS Choi, KM Kim, J Ko, J Kim, SG Lee
IEEE Transactions on Circuits and Systems II: Express Briefs 68 (8), 2810-2814, 2021
52021
A 915 MHz IoT transmitter employing frequency tripler and digitally controlled duty-cycle/phase calibration
KS Choi, KM Kim, J Ko, SG Lee
IEEE Journal of Solid-State Circuits 57 (11), 3336-3347, 2022
42022
An active leakage canceller adopting switched-capacitor digital power amplifier for UHF-RFID transceiver
KS Choi, S Kim, J Ko, SG Lee
IEEE Microwave and Wireless Components Letters 31 (6), 604-607, 2021
42021
A 5 dBm 30.6% Efficiency 915 MHz Transmitter with ULP PLL Employing Frequency Tripler and Digitally Controlled Duty/Phase Calibration Buffer
KS Choi, KM Kim, J Ko, SG Lee
2020 IEEE Asian Solid-State Circuits Conference (A-SSCC), 1-4, 2020
42020
A 250 GHz Wideband Direct-Conversion CMOS Receiver Adopting Baseband Equalized Low-Loss Resistive Passive Mixer
HR Jeon, BH Yun, HK Lee, SG Lee, KS Choi
IEEE Transactions on Circuits and Systems II: Express Briefs, 2023
32023
245/243GHz, 9.2/10.5 dBm Saturated Output Power, 4.6/2.8% PAE, and 28/26dB Gain Power Amplifiers in 65nm CMOS Adopting 2-and 4-way Power Combining
B Yun, DW Park, KS Choi, HJ Song, SG Lee
2021 IEEE Asian Solid-State Circuits Conference (A-SSCC), 1-3, 2021
32021
A single-supply single-core inverse class-D digital power amplifier with enhanced power back-off efficiency adopting output power scaling technique
KS Choi, J Ko, SG Lee
2021 Symposium on VLSI Circuits, 1-2, 2021
32021
500 GHz CMOS heterodyne imager adopting fourth subharmonic passive mixer
KS Choi, DW Park, DR Utomo, SG Lee
Microwave and Optical Technology Letters 62 (2), 683-687, 2020
32020
A -Band Wideband Low-Noise Amplifier Adopting Pseudo-Simultaneous Noise and Input Matched Dual-Peak -Core
H Lee, B Yun, H Jeon, W Keum, SG Lee, KS Choi
IEEE Transactions on Microwave Theory and Techniques, 2023
22023
A 124-dBm Sensitivity Interference-Resilient Direct-Conversion Duty-Cycled Wake-Up Receiver Achieving 0.114 mW at 1.966-s Wake-Up Latency
KM Kim, KS Choi, H Jung, B Yun, J Xu, J Ko, SG Lee
IEEE Journal of Solid-State Circuits, 2022
22022
A Fully Integrated 490-GHz CMOS Receiver Adopting Dual-Locking Receiver-Based FLL
KS Choi, KM Kim, DR Utomo, IY Lee, SG Lee
IEEE Journal of Solid-State Circuits 57 (9), 2626-2639, 2022
22022
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