INSPIRE Lab
INtelligent, High-SPeed & Integrated Radio Electronics
JOURNAL
[J23] J. Guo, Y. Cao, and K. Chen, “One-Dimensional Reconfigurable Pseudo-Doherty Load Modulated Balanced Amplifier with Intrinsic VSWR Resilience across Wide Bandwidth,” to appear in IEEE Transactions on Microwave Theory Techniques.
[J22] H. Lyu, Y. Cao, and K. Chen, “Highly efficient and linear quasi-balanced Doherty power amplifier at 3.5GHz,” to appear in IEEE Microwave Magazine. (1st-Place Winner of IEEE MTT-S 17th High-Efficiency Power Amplifier Design Competition)
[J21] H. Lyu and K. Chen, “Analysis and Design of Reconfigurable Multi-Band Mismatch-Resilient Quasi-Balanced Doherty Power Amplifier for Massive MIMO Systems,” IEEE Transactions on Microwave Theory Techniques, vol. 70, no. 10, pp. 4410-4421, Oct. 2022.
[J20] Y. Cao, H. Lyu, and K. Chen, “Continuous-mode hybrid asymmetrical load-modulated balanced amplifier with three-way modulation and multi-band reconfigurability,” IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 63, no. 3, pp. 1077-1090, Mar. 2022.
[J19] H. Lyu, Y. Cao, and K. Chen, “Linearity-enhanced and highly efficient Doherty power amplifier,” IEEE Microwave Magazine, vol. 2, no. 10, pp. 62-69, Sep. 2021. (1st-Place Winner of IEEE MTT-S 16th High-Efficiency Power Amplifier Design Competition)
[J18] H. Lyu and K. Chen, “Hybrid load-modulated balanced amplifier with high linearity and extended dynamic range,” IEEE Microwave and Wireless Components Letters, vol. 31, no. 9, pp. 1067-1070, Sep. 2021.
[J17] Y. Cao and K. Chen, “Hybrid asymmetrical load modulated balanced amplifier with wide bandwidth and three-way-Doherty efficiency enhancement,” IEEE Microwave and Wireless Components Letters, vol. 31, no. 6, pp. 721-724, June 2021. (Special Issue of TOP IMS 2021 Papers)
[J16] H. Lyu, Y. Cao, and K. Chen, “Linearity-enhanced quasi-balanced Doherty power amplifier with mismatch resilience through series/parallel reconfiguration for massive MIMO,” IEEE Transactions on Microwave Theory Techniques, vol. 69, no. 4, pp. 2319-2335, Apr. 2021.
[J15] Y. Cao and K. Chen, “Asymmetrical load modulated balanced amplifier with continuum of modulation ratio and dual-octave bandwidth,” IEEE Transactions on Microwave Theory Techniques, vol. 69, no. 1, pp. 682-696, Jan 2021.
[J14] Y. Cao and K. Chen, “Pseudo-Doherty load-modulated balanced amplifier with wide bandwidth and extended power back-off range,” IEEE Transactions on Microwave Theory Techniques, vol. 68, no. 7, pp. 3172-3183, July 2020.
[J13] H. Lyu and K. Chen, “Balanced-to-Doherty mode-reconfigurable power amplifier with high efficiency and linearity against load mismatch,” IEEE Transactions on Microwave Theory Techniques, vol. 68, no. 5, pp. 1717-1728, May 2020.
[J12] Y. Cao, H. Lyu, and K. Chen, “Enhancing carrier aggregation: design of BAW quadplexer with ultrahigh cross-band isolation,” IEEE Microwave Magazine, vol. 20, no. 3, pp. 101-110, Mar. 2020
[J11] Y. Cao, E. Sunde, and K. Chen, “Multiplying channel capacity: aggregation of fragmented spectral resources,” IEEE Microwave Magazine, vol. 20, no. 1, pp. 70-77, Jan. 2019.
[J10] A. Semnani, K. Chen, and D. Peroulis, “Microwave gas breakdown in tunable evanescent-mode cavity resonators,” IEEE Microwave Wireless Components Letters, vol. 24, no. 5, pp. 351-353, May 2014.
[J9] K. Chen, E. J. Naglich, Y. C. Wu, and D. Peroulis, “Highly linear and highly efficient dual-carrier power amplifier based on low-loss RF carrier combiner,” IEEE Transactions on Microwave Theory Techniques, vol. 62, no. 3, pp. 590-599, Mar. 2014.
[J8] K. Chen, T.-C. Lee, and D. Peroulis, “Co-design of multi-band high-efficiency power amplifier and three-pole high-Q tunable filter,” IEEE Microwave Wireless Components Letters, vol. 23, no. 12, pp. 647-649, Dec. 2013.
[J7] K. Chen, J. Lee, W. J. Chappell, and D. Peroulis, “Co-design of highly efficient power amplifier and high-Q output bandpass filter,” IEEE Transactions on Microwave Theory Techniques, vol. 61, no. 11, pp. 3940-3950, Nov. 2013.
[J6] K. Chen and D. Peroulis, “A 3.1-GHz Class-F power amplifier with 82% power-added-efficiency,” IEEE Microwave Wireless Components Letters, vol. 23, no. 8, pp. 436-438, Aug. 2013.
[J5] K. Chen and D. Peroulis, “Design of broadband highly efficient harmonic-tuned power amplifier using in-band continuous Class-F−1/F mode-transferring,” IEEE Transactions on Microwave Theory Techniques, vol. 60, no. 12, pp. 4107-4116, Dec. 2012.
[J4] K. Chen, X. Liu, and D. Peroulis, “Widely tunable high-efficiency power amplifier with ultra-narrow instantaneous bandwidth,” IEEE Transactions on Microwave Theory Techniques, vol. 60, no. 12, pp. 3787-3797, Dec. 2012.
[J3] K. Chen and D. Peroulis, “Design of adaptive highly efficient GaN power amplifier for octave-bandwidth applications and dynamic load modulation,” IEEE Transactions on Microwave Theory Techniques, vol. 60, no. 6, pp. 1829-1839, June 2012.
[J2] K. Chen and D. Peroulis, “Design of highly efficient broadband Class-E power amplifier using synthesized low-pass matching networks,” IEEE Transactions on Microwave Theory Techniques, vol. 59, no. 12, pp. 3162-3173, Dec. 2011.
[J1] K. Chen, X. Liu, A. Kovacs, W. J. Chappell, and D. Peroulis, “Antibiased electrostatic RF MEMS varactors and tunable filters,” IEEE Transactions on Microwave Theory Techniques, vol. 58, no. 12, pp. 3971-3981, Dec. 2010.
CONFERENCE
[C22] J. Guo, Y. Cao, and K. Chen, “Reconfigurable Hybrid Asymmetrical Load Modulated Balanced Amplifier with High Linearity, Wide Bandwidth, and Load Insensitivity,” in Proc. IEEE MTT-S Int. Microwave Symposium, San Diego, June 2023.
[C21] H. Lyu, R. Lovato, S. Gowri, X. Gong, and K. Chen, “Co-Design of Doherty Power Amplifier and Post-Matching Bandpass Filter,” in Proc. IEEE Wireless and Microwave Technology Conference, 4 pages, Melbourne, FL, Apr. 2023. — Best Conference Paper Award
[C20] J. Guo and K. Chen, “Load Modulated Double-Balanced Amplifier with Quasi-Isolation to Load,” in Proc. IEEE Wireless and Microwave Technology Conference, 4 pages, Melbourne, FL, Apr. 2023.
[C19] N. B. Vangipurapu and K. Chen, “High-Power Magnetic-Less STAR Frontend using GaN-Based Quadrature Balanced Amplifier,” in Proc. IEEE Wireless and Microwave Technology Conference, 4 pages, Melbourne, FL, Apr. 2023. — Best Student Paper Award (1st Place)
[C18] N. B. Vangipurapu, Y. Cao, and K. Chen, “Intrinsically Mode-Reconfigurable Load-Modulation Power Amplifier Leveraging Transistor's Analog-Digital Duality,” in Proc. IEEE MTT-S Int. Microwave Symposium Digest (IMS), 4 pages, Denver, June 2022.
[C17] (Invited) K. Chen, “Quadrature-coupled active load modulation: a ‘grand unified’ power-amplification platform,” in IEEE MTT-S Int. Wireless Symposium Digest (IWS), May 2021.
[C16] Y. Cao and K. Chen, “Highly miniaturized and wideband 3-dB quadrature hybrid using slow-wave coupled line,” in Proc. IEEE MTT-S Int. Microwave Symposium Digest (IMS), 4 pages, Atlanta, June 2021.
[C15] H. Lyu and K. Chen, “Wideband quasi-balanced Doherty power amplifier with reciprocal main/auxiliary setting and mismatch-resilient parallel/series reconfiguration,” in Proc. IEEE MTT-S Int. Microwave Symposium Digest (IMS), 4 pages, Atlanta, June 2021.
[C14] Y. Cao and K. Chen, “Pseudo-Doherty hybrid load modulated balanced amplifier with extended dynamic power range and ultra-broad RF bandwidth,” in Proc. Government Microcircuit Applications and Critical Technology Conference (GOMACTech), 2021.
[C13] Y. Cao and K. Chen, “Dual-octave-bandwidth RF-input load modulated balanced amplifier with ≥10-dB power back-off range,” in Proc. IEEE MTT-S Int. Microwave Symposium Digest (IMS), 4 pages, Aug. 2020. — 2020 IEEE MTT-S IMS Best Paper Award (1st Place)
[C12] H. Lyu and K. Chen, “Reconfigurable quasi-balanced Doherty power amplifier with high efficiency and linearity against load mismatch for MIMO and array applications,” in Proc. Government Microcircuit Applications and Critical Technology Conference (GOMACTech), Mar. 2020.
[C11] Y. Cao, H. Lyu, and K. Chen, “Load-modulated balanced amplifier with reconfigurable phase control for extended dynamic range,” in Proc. IEEE MTT-S Int. Microwave Symposium Digest (IMS), pp. 1335-1338, June 2019.
[C10] H. Lyu, Y. Cao, and K. Chen, “Doherty-to-Balanced switchable power amplifier,” in Proc. IEEE MTT-S Int. Microwave Symposium Digest (IMS), pp. 1339-1342, June 2019.
[C9] Y. Cao, H. Lyu, and K. Chen, “Wideband Doherty power amplifier in quasi-balanced configuration,” in Proc. IEEE Wireless and Microwave Technology Conference (WAMICON), 4 pages, Apr. 2019.
[C8] K. Chen, A. Semnani, and D. Peroulis, “High-power microwave gas discharge in high-Q evanescent-mode cavity resonators and its instantaneous/long-term effects,” in Proc. IEEE MTT-S Int. Microwave Symposium Digest (IMS), 4 Pages, June 2013.
[C7] Y.-C. Wu, K. Chen, E. J. Naglich, and D. Peroulis, “A wideband 0.7–2.2 GHz tunable power amplifier with over 64% efficiency based on high-Q second harmonic loading,” in Proc. IEEE MTT-S Int. Microwave Symposium Digest (IMS), 4 Pages, June 2013.
[C6] K. Chen and D. Peroulis, “Design of broadband high-efficiency power amplifier using in-band Class-F−1/F mode-transferring technique,” in Proc. IEEE MTT-S Int. Microwave Symposium Digest (IMS), 3 Pages, June 2012.
[C5] K. Chen, H. H. Sigmarsson, and D. Peroulis, “Power handling of high-Q evanescent-mode tunable filter with integrated piezoelectric actuators,” in Proc. IEEE MTT-S Int. Microwave Symposium Digest (IMS), 3 Pages, June 2012.
[C4] D. Kim, X. Cui, A. Cherala, K. Chen, and D. Peroulis, “A two-dimensional electronically-steerable array antenna for target detection on ground,” in Proc. IEEE International Symposium on Antennas and Propagation (ISAP), pp. 734-737, July 2011.
[C3] K. Chen, X. Liu, W. J. Chappell, and D. Peroulis, “Co-design of power amplifier and narrowband filter using high-Q evanescent-mode cavity resonator as the output matching network,” in Proc. IEEE MTT-S Int. Microwave Symposium Digest (IMS), 4 Pages, June 2011.
[C2] X. Liu, K. Chen, L. P. B. Katehi, W. J. Chappell, and D. Peroulis, “System-level characterization of bias noise effects on electrostatic RF MEMS tunable filters,” in Proc. IEEE 24th International Conference on Micro Electro Mechanical Systems (MEMS), pp. 1142-1145, Jan 2011.
[C1] K. Chen, A. Kovacs, and D. Peroulis, “Anti-biased RF MEMS varactor topology for 20–25 dB linearity enhancement,” in Proc. IEEE MTT-S Int. Microwave Symposium Digest (IMS), pp. 1142-1145, May 2010.