~International Conferences~
Y. Kang, H. Lee, and I. Ju, “A 5/6 GHz Compact, Dual-Band, and Highly Linear Wi-Fi 6E SiGe HBT Power Amplifier Using Q-Modulated Switched Capacitor Interstage Matching Network and Optimized Output Stage,” Accepted, IEEE Radio Frequency Integrated Circuits Symposium (RFIC), June 2025.
K. Choi, S. Moon, D. Jang, and I. Ju, “A 22-30 GHz Ultra Low RMS Phase Error SiGe HBT BiCMOS Active Vector Modulator Phase Shifter with A Tunable Two-Section Lumped Element Differential Quadrature Hybrid,” Accepted, IEEE International Microwave Symposium (IMS), June 2025.
I. Han, H. Lee, and I. Ju, “Fully Integrated SiGe HBT BiCMOS Transmit-Receive Front-End IC for 5G mmW Radio with A Reconfigurable Built-In Diode RF Switch,” IEEE Radio Frequency Integrated Circuits Symposium (RFIC), June 2024.
H. Lee, I. Han, J. Hwang, and I. Ju, “An Efficient, High Power Q-Band SiGe HBT Power Amplifier With A Compact Four-Way Wilkinson Power Combiner Balun for Emerging Very Low-Earth-Orbit SATCOM,” IEEE Radio Frequency Integrated Circuits Symposium (RFIC), June 2024.
B. Yoon, I. Han, J. Kim, and I. Ju, “A Compact, Highly Linear Ku-Band SiGe HBT Power Amplifier Using Shared Single Center-Tap Four-Way Output Transformer Balun for Emerging Low Earth Orbit SATCOM Phased-Array Transmitter,” IEEE Radio Frequency Integrated Circuits Symposium (RFIC), June 2024.
S. Kim, K. Choi, J. Kim, and I. Ju, “Compact, Low Loss 4-Bit Ku-band Hybrid Passive Phase Shifter Realized in 0.13-μm SiGe HBT BiCMOS for LEO SATCOM,” IEEE International Microwave Symposium (IMS), June 2024.
I. Ju and J.D. Cressler, “A Compact, Low Loss, and Broadband Two-Section Lumped-Element Wilkinson Power Combiner Using 130 nm SiGe HBT BiCMOS Technology,” IEEE Global Symposium on Millimeter-Wave (GSMM), May 2022.
S. Lee, I. Ju et al, “A 2-24 GHz SiGe HBT Cascode Non-uniform Distributed Power Amplifier Using A Compact, Wideband Two-Section Lumped Element Output Impedance Transformer,” IEEE International Microwave Symposium (IMS), June 2021.
S. Lee, I. Ju et al, “Design of an 18-50 GHz SiGe HBT Cascode Non-uniform Distributed Power Amplifier,” IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium (BCICTS), Nov. 2020.
I. Ju et al, “A Highly Linear, High-Power 802.11ac/ax WLAN SiGe HBT Power Amplifier Using a Compact 2nd-harmonic-Shorting Four-Way Transformer and Integrated Thermal Sensors,” IEEE International Solid-State Circuits Conference (ISSCC), Feb. 2019.
I. Ju and J.D. Cressler, “An X-band Inverse Class-F SiGe HBT Cascode Power Amplifier With Harmonic-tuned Output Transformer,” IEEE Radio Frequency Integrated Circuits Symposium (RFIC), June 2017.
I. Ju et al, “Co-design of a SiGe BiCMOS X-Band, Asymmetric, Low Insertion Loss, High Power Handling SPDT Switch and an Ultra Low Noise LNA for Next-Generation T/R Module,” IEEE International Microwave Symposium (IMS), May 2016.