A ring-VCO-based injection-locked frequency multiplier using a new pulse generation technique in 65 nm CMOS. - Norifumi Kanemaru; Sho Ikeda; Tatsuya Kamimura; Sang-yeop Lee; Satoru Tanoi; Hiroyuki Ito; Noboru Ishihara; Kazuya Masu (ISOCC, 2011)

Injection-locked fractional frequency multiplier with automatic reference pulse-selection technique. - Sang-yeop Lee; Hiroyuki Ito; Satoru Tanoi; Noboru Ishihara; Kazuya Masu (IEICE Electron. Express, 2012)

A Ring-VCO-Based Injection-Locked Frequency Multiplier with Novel Pulse Generation Technique in 65 nm CMOS. - Sang-yeop Lee; Norifumi Kanemaru; Sho Ikeda; Tatsuya Kamimura; Satoru Tanoi; Hiroyuki Ito; Noboru Ishihara; Kazuya Masu (IEICE Trans. Electron., 2012)

A 950μW 5.5-GHz low voltage PLL with digitally-calibrated ILFD and linearized varactor. - Sho Ikeda; Tatsuya Kamimura; Sang-yeop Lee; Hiroyuki Ito; Noboru Ishihara; Kazuya Masu (ASP-DAC, 2014)

A 0.52-V 5.7-GHz low noise sub-sampling PLL with dynamic threshold MOSFET. - Sho Ikeda; Sang-yeop Lee; Hiroyuki Ito; Noboru Ishihara; Kazuya Masu (A-SSCC, 2014)

A Sub-1mW Class-C-VCO-Based Low Voltage PLL with Ultra-Low-Power Digitally-Calibrated ILFD in 65nm CMOS. - Sho Ikeda; Sang-yeop Lee; Tatsuya Kamimura; Hiroyuki Ito; Noboru Ishihara; Kazuya Masu (IEICE Trans. Electron., 2014)

A 0.5-V 5.8-GHz low-power asymmetrical QPSK/OOK transceiver for wireless sensor network. - Sho Ikeda; Sang-yeop Lee; Shin Yonezawa; Yiming Fang; Motohiro Takayasu; Taisuke Hamada; Yosuke Ishikawa; Hiroyuki Ito; Noboru Ishihara; Kazuya Masu (ASP-DAC, 2015)

A 0.5-V 1.56-mW 5.5-GHz RF transceiver IC module with J-shaped folded monopole antenna. - Yosuke Ishikawa; Sang-yeop Lee; Shin Yonezawa; Sho Ikeda; Yiming Fang; Taisuke Hamada; Hiroyuki Ito; Noboru Ishihara; Kazuya Masu (ISCAS, 2015)

RC-Oscillator-Based Battery-Less Wireless Sensing System Using RF Resonant Electromagnetic Coupling. - Zixuan Li; Sang-yeop Lee; Noboru Ishihara; Hiroyuki Ito (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2024)

A Capacitor-Less Divide-by-18 Injection-Locked Frequency Divider Using a Harmonic-Boosted Gating Technique. - Sang-yeop Lee; Motohiro Takayasu (ICEIC, 2025)