A gain boosting method at RF frequency using active feedback and its application to RF variable gain amplifier (VGA). - Kwang-Jin Koh; Yong-Sik Youn; Hyun-Kyu Yu (ISCAS (3), 2002)

Subharmonically pumped CMOS frequency conversion (up and down) circuits for 2-GHz WCDMA direct-conversion transceiver. - Kwang-Jin Koh; Mun-Yang Park; Cheon-Soo Kim; Hyun-Kyu Yu (IEEE J. Solid State Circuits, 2004)

An X- and Ku-Band 8-Element Linear Phased Array Receiver. - Kwang-Jin Koh; Gabriel M. Rebeiz (CICC, 2007)

0.13-µm CMOS Phase Shifters for X-, Ku-, and K-Band Phased Arrays. - Kwang-Jin Koh; Gabriel M. Rebeiz (IEEE J. Solid State Circuits, 2007)

An X- and Ku-Band 8-Element Phased-Array Receiver in 0.18-µm SiGe BiCMOS Technology. - Kwang-Jin Koh; Gabriel M. Rebeiz (IEEE J. Solid State Circuits, 2008)

A Millimeter-Wave (40-45 GHz) 16-Element Phased-Array Transmitter in 0.18-µm SiGe BiCMOS Technology. - Kwang-Jin Koh; Jason W. May; Gabriel M. Rebeiz (IEEE J. Solid State Circuits, 2009)

14.4 A Class F-1/F 24-to-31GHz power amplifier with 40.7% peak PAE, 15dBm OP1dB, and 50mW Psat in 0.13μm SiGe BiCMOS. - Seyed Yahya Mortazavi; Kwang-Jin Koh (ISSCC, 2014)

Finite Delay Response Harmonic Filters. - Kwang-Jin Koh; Seyed Yahya Mortazavi (IEEE Trans. Circuits Syst. I Regul. Pap., 2014)

Time Interleaved RF Carrier Modulations and Demodulations. - Kwang-Jin Koh; Seyed Yahya Mortazavi; Sadia Afroz (IEEE Trans. Circuits Syst. I Regul. Pap., 2014)

2-4 GHz Q-tunable LC bandpass filter with 172-dBHz peak dynamic range, resilient to +15-dBm out-of-band blocker. - Laya Mohammadi; Kwang-Jin Koh (CICC, 2015)

A 28-GHz inverse class-F power amplifier with coupled-inductor based harmonic impedance modulator. - Seyed Yahya Mortazavi; Kwang-Jin Koh (CICC, 2015)

A 0.6-V, 30-GHz six-phase VCO with superharmonic coupling in 32-nm SOI CMOS technology. - Dongseok Shin; Sanjay Raman; Kwang-Jin Koh (CICC, 2015)

A high temperature wideband low noise amplifier for downhole applications. - Michael L. Cunningham; Dong S. Ha 001; Kwang-Jin Koh (ISCAS, 2016)

2.8 A mixed-mode injection frequency-locked loop for self-calibration of injection locking range and phase noise in 0.13µm CMOS. - Dongseok Shin; Sanjay Raman; Kwang-Jin Koh (ISSCC, 2016)

Integrated Inverse Class-F Silicon Power Amplifiers for High Power Efficiency at Microwave and mm-Wave. - Seyed Yahya Mortazavi; Kwang-Jin Koh (IEEE J. Solid State Circuits, 2016)

A low-power 3.25GS/s 4th-order programmable analog FIR filter using split-CDAC coefficient multipliers for wideband analog signal processing. - Shinwoong Park; Dongseok Shin; Kwang-Jin Koh; Sanjay Raman (ISSCC, 2018)

A Fast Triple-Interferer Sensor (Detector and Digital Encoder) with In-Situ Reference Frequency Acquisition at 2.7-to-3.7GHz in 0.13μM CMOS. - Dongseok Shin; Kwang-Jin Koh (VLSI Circuits, 2018)

Power-Efficient W-Band (92-98 GHz) Phased-Array Transmit and Receive Elements With Quadrature-Hybrid-Based Passive Phase Interpolator. - Sadia Afroz; Hyunchul Kim; Kwang-Jin Koh (IEEE J. Solid State Circuits, 2018)

An Injection Frequency-Locked Loop - Autonomous Injection Frequency Tracking Loop With Phase Noise Self-Calibration for Power-Efficient mm-Wave Signal Sources. - Dongseok Shin; Kwang-Jin Koh (IEEE J. Solid State Circuits, 2018)

W-Band (92-100 GHz) Phased-Array Receive Channel With Quadrature-Hybrid-Based Vector Modulator. - Sadia Afroz; Kwang-Jin Koh (IEEE Trans. Circuits Syst. I Regul. Pap., 2018)

Integrated Synthetic Fourth-Order $Q$ -Enhanced Bandpass Filter With High Dynamic Range, Tunable Frequency, and Fractional Bandwidth Control. - Farooq Amin; Sanjay Raman; Kwang-Jin Koh (IEEE J. Solid State Circuits, 2019)

24-GHz Injection-Locked Frequency Tripler With Third-Harmonic Quadrature Phase Generator. - Dongseok Shin; Kwang-Jin Koh (IEEE Trans. Circuits Syst. I Regul. Pap., 2019)