~Journals~

• H.J. Lee, I.S. Han, and I. Ju, “A Highly Efficient, Linear Ka-Band SiGe HBT Cascode Power Amplifier With a Compact Lumped Element Coupled Line Impedance Inverting Balun,” IEEE Transactions on Microwave Theory and Techniques, Accepted in March 2024.

• I. Ju, S. Lee, and J.D. Cressler, “An Efficient, Broadband SiGe HBT Non-Uniform Distributed Power Amplifier Leveraging a Compact, Two-Section λ/4 Output Impedance Transformer,” IEEE Transactions on Microwave Theory and Techniques, Vol. 70, No. 7, pp. 3524~3533, July 2022.

• I. Ju, C. Cheon, and J.D. Cressler, “A New Emitter-Base-Collector-Base-Emitter SiGe HBT for High Power, Single-Pole Double-Throw X-Band Switches,” IEEE Electron Device Letters, Vol. 42, No. 4, pp. 465~468, April 2021.

• I. Ju, Y. Gong, and J.D. Cressler, “A Highly Linear High-Power 802.11ac/ax WLAN SiGe HBT Power Amplifiers With a Compact 2nd-Harmonic-Shorted Four-Way Transformer and a Thermally Compensating Dynamic Bias Circuit,” IEEE Journal of Solid-State Circuits, Vol. 55, No. 9, pp. 2356~2370, May 2020.

• I. Ju and J.D. Cressler, “A Highly Efficient X-band Inverse Class-F SiGe HBT Cascode Power Amplifier With Harmonic-tuned Wilkinson Power Combiner,” IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 65, Issue 11, pp. 1609-1613, Nov. 2018.

• I. Ju, C. Cheon, and J.D. Cressler, “A Compact, Highly Efficient High Power Ka-band SiGe HBT Cascode Frequency Doubler With Four-Way Input Transformer Balun,” IEEE Transactions on Microwave Theory and Techniques, vol. 6, Issue 6, pp. 2879-2887, Mar. 2018.

• I. Song, M.-K. Cho, M. Oakley, A. Ildefonso, I. Ju et al, “On the Application of Inverse-Mode SiGe HBTs in RF Receivers for the Mitigation of Single-Event Transients,” IEEE Transactions on Nuclear Science, vol. 64, Issue 5, pp. 1142-1150, April 2017.

• M.-K. Cho, I. Song, I. Ju, and J.D. Cressler, “A Compact, Active SiGe Power Divider With Multi-Octave Bandwidth,” IEEE Microwave and Wireless Components Letters, vol. 26, Issue 11, pp. 945-947, Oct. 2016.

• I. Ju, M.-K. Cho, I. Song, and J.D. Cressler, “A Compact, Wideband Lumped-Element Wilkinson Power Divier/Combiner Using Symmetric Inductors with Embedded Capacitors,” IEEE Microwave and Wireless Components Letters, vol. 26, Issue 8, pp. 595-597, July. 2016.

• I. Ju et al, “V-band Beam-Steering ASK Transmitter and Receiver Using BCB-based System-on-Package Technology on Silicon Mother Board,” IEEE Microwave and Wireless Components Letters, vol. 21, Issue 11, pp. 619-621, Nov. 2011.

• I. Ju et al, “High Power GaN-based Light-Emitting-Diodes Using Thermally Stable and Highly Reflective Nano-Scaled Ni-Ag-Ni-Au Mirror,” IEEE Photonics Technology Letters, vol. 23, Issue 22, pp. 1685-1687, Nov. 2011.