Publication > International Journal

[140] W. Lee, H. Kang, H. Lee, J. Bae, S. Oh, H. Oh, H. Koo, J. Yoon, K. C. Hwang, K.-Y. Lee, Y. Yang, "High-Efficiency Stacked Power Amplifier IC With 23% Fractional Bandwidth for Average Power Tracking Application", IEEE Access, vol. 7, pp. 176658-176667, Dec. 2019. [SCIE]

[139] H. Oh, W. Lee, H. Koo, J. Bae, K. C. Hwang, K.-Y. Lee, Y. Yang, "6.78 MHz Wireless Power Transmitter Based on a Reconfigurable Class-E Power Amplifier for Multiple Device Charging", IEEE Trans. Power Electron., pp. 1-1, Nov. 2019. [SCIE]

[138] S. Kim, J.-H. Cheon, D. Lee, Y. Pu, S.-S. Yoo, M. Lee, K. C. Hwang, Y. Yang, K.-Y. Lee, "A design of a 5.6 GHz frequency synthesizer with switched bias LIT VCO and low noise on‐chip LDO regulator for 5G applications" Int. J. Circuit Theory Appl., vol. 47, no. 11, pp. 1856-1868, Nov. 2019. [SCIE]

[137] H. Abbasizadeh, S. Y. Kim, B. S. Rikan, A. Hejazi, D. Khan, Y. G. Pu, K. C. Hwang, Y. Yang, D. I. Kim, K.-Y. Lee, "Design of a 900 MHz Dual-Mode SWIPT for Low-Power IoT Devices", Sensors, vol. 19, no. 21, pp. 4676, Oct. 2019. [SCIE]

[136] S. Trinh-Van, O. H. Kwon, E. Jung, J. Park, B. Yu, K. Kim, J. Seo, and K. C.  Hwang, “A low-profile high-gain and wideband log-periodic meandered dipole array antenna with a cascaded multi-section artificial magnetic conductor structure,” Sensors, vol. 19, no. 20, p. 4404, Oct. 2019. [SCIE]

[135] J. Yun, J.-Y. Park and K. C. Hwang, “Optimization of a Subarray Structure to Improve the G/T of an Active Array Antenna,” IEEE Antennas Wirel. Propag. Lett., vol. 18, no. 10, pp. 2214-2218, Sep. 2019. [SCIE]

[134] W. Lee, H. Kang, H. Lee, W. Lim, J. Bae, H. Koo, J. Yoon, K. C. Hwang, K.-Y. Lee, Y. Yang, "Broadband InGaP/GaAs HBT Power Amplifier Integrated Circuit Using Cascode Structure and Optimized Shunt Inductor", IEEE Trans. Microw. Theory Techn., vol. 67, no. 12, pp. 5090-5100, Sep. 2019. [SCIE]

[133] S. Trinh-Van, J. M. Lee, Y. Yang, K.-Y. Lee, and K. C. Hwang, “A Sidelobe-Reduced, Four-Beam Array Antenna Fed by a Modified 4 × 4 Butler Matrix for 5G Applications,” IEEE Trans. Antennas Propag., vol. 67, no 7, pp. 4528-4536, Jul. 2019. [SCI]

[132] D. Khan, S. J. Oh, K. Shehzad, D. Verma, Z. H. N. Khan, Y. G. Pu, M. Lee, K. C. Hwang, Y. Yang, K.-Y. Lee, "A CMOS RF Energy Harvester With 47% Peak Efficiency Using Internal Threshold Voltage Compensation", IEEE Microw. Compon. Lett., vol. 29, no. 6, pp. 415-417, Apr. 2019. [SCIE]

[131] S. Trinh-Van, Y. Yang, K.-Y. Lee, Y. S. Kim, and K. C. Hwang, “Bandwidth-enhanced circularly polarized crescent-shaped slot antenna via circular-patch loading,” Appl. Sci., vol. 9 no. 6, pp. 1117-1125, Mar. 2019. [SCIE]

[130] S. Trinh-Van, T. Nguyen Thi, Y. Yang, K.-Y. Lee, K.-Y. Jung, and K. C. Hwang, “High-gain waveguide-fed circularly polarized Spidron fractal aperture antenna,” Appl. Sci., vol. 9 no. 4, pp. 691-702, Feb. 2019. [SCIE]

[129] S.-Y. Kim, H. Abbasizadeh, B. S. Rikan, S. J. Oh, B. Jang, Y.-J. Park, D. Khan, T. T. K. Nga, K.T. Kang, Y.G. Pu, S.-S. Yoo, S.H. Lee, S.-C. Lee, M. Lee, K. C. Hwang, Y. Yang, K.-Y. Lee, “A-20 to 30 dBm input power range wireless power system with a MPPT-based reconfigurable 48% efficient RF energy harvester and 82% efficient A4WP wireless power receiver with open loop delay compensation,” accepted for publication in IEEE Trans. Power Electron., 2018. [SCI]

[128] H. Kang, H. Lee, W. Lee, H. Oh, W. Lim, H. Koo, C.-S. Park, K. C. Hwang, K.-Y. Lee, Y. Yang, “Octave bandwidth doherty power amplifier using multiple resonance circuit for the peaking amplifier,” IEEE Trans. Circuits Syst. I, Reg. Papers, vol. 66, no. 2, pp. 583-593, Feb. 2019. [SCI]

[127] J. Bae, S.-H. Yi, W. Choi, H. Koo, K. C. Hwang, K.-Y. Lee, Y. Yang, "5.8 GHz High-Efficiency RF–DC Converter Based on Common-Ground Multiple-Stack Structure", Sensors, vol. 19, no. 15, pp. 3257, Jan. 2019. [SCIE]

[126] S. J. Kim, D. G. Kim, S. J. Oh, D. S. Lee, Y. G. Pu, K. C. Hwang, Y. Yang, K.-Y. Lee, "A Fully Integrated Bluetooth Low-Energy Transceiver with Integrated Single Pole Double Throw and Power Management Unit for IoT Sensors" Sensors, vol. 19, no. 10, pp. 2420, Jan. 2019. [SCIE] [SCIE]

[125] W. B. Park, J. M. Lee, S. Lee, Y. M. Park, and K. C. Hwang, “A 18-40 GHz substrate integrated waveguide (SIW) H-plane horn antenna,” IEEE Trans. Antennas Propag., vol. 66, no 11, pp. 6322-6327, Nov. 2018. [SCI]

[124] W. Lim, H. Kang, W. Lee, J. Bae, S. Oh, H. Oh, S. Chae, K. C. Hwang, K.-Y. Lee, and Y. Yang, “Dual-mode CMOS power amplifier based on load-impedance modulation,” IEEE Microw. Compon. Lett., vol. 28, no. 11, pp. 1041-1043, Nov. 2018. [SCI]

[123] T. T. K. Nga, D. S. Lee, S. J. Kim, M. Lee, K. C. Hwang, Y. Yang, and K.-Y. Lee “40 dB-isolation, 1.85 dB-insertion loss full CMOS SPDT switch with body-floating technique and ultra-small active matching network using on-chip solenoid inductor for BLE applications,” Electronics, vol. 7, no. 11, p. 297, Nov. 2018. [SCIE]

[122] H. Koo, H. Kang, W. Lee, H. Lee, K.-Y Lee, K. C. Hwang, and Y. Yang, “GaN-HEMT asymmetric three-way Doherty power amplifier using GPD,” IET Microw. Antennas Propag., vol. 12, no. 13, pp. 2115-2121, Oct. 2018. [SCIE]

[121] B. Rikan, S.-Y. Kim, H. Abbasizadeh, A. Hejazi, R. Rad, K. Shehzad, K. C. Hwang, Y. Yang, M. Lee, and K.-Y. Lee, “A 10-and 12-bit Multi-channel hybrid type successive approximation register analog-to-digital converter for wireless power transfer system,” Energies, vol. 10, no. 10, p. 2673, Oct. 2018. [SCIE]

[120] S. J Oh, S. J Kim, I. Ali, T. T. K. Nga, D. S Lee, Y. G Pu, S.-S. Yoo, M. Lee, K. C. Hwang, Y. Yang, and K.-Y. Lee, “A 3.9 mW bluetooth low-energy transmitter using all-digital PLL-based direct FSK modulation in 55 nm CMOS,” IEEE Trans. Circuits Syst. I, Reg. Papers, vol. 65, no. 9, pp. 3037-3048, Sep. 2018. [SCI]

[119] D. S. Lee, S. H. Cho, H. Ryu, Y. G. Pu, S. S. Yoo, M. Lee, K. C. Hwang, Y. Yang, and K.-Y. Lee, “A highly linear, AEC-Q100 compliant signal conditioning IC for automotive piezo-resistive pressure sensors,” IEEE Trans. Ind. Electron., vol. 65, no. 65, pp. 7363-7373, Sep. 2018. [SCIE]

[118] S. Lee, Y. Yang, K.-Y. Lee, K.-Y. Jung, and K. C. Hwang, "Robust design of 3D-printed 6-18 GHz double-ridged TEM horn antenna," Appl. Sci., vol. 8 no. 9, pp. 1582-1581, Sep. 2018. [SCIE]

[117] A. Altaf, J.-W. Jung, Y. Yang, K.-Y. Lee, S.-H. Yi, and K. C. Hwang, "A 3-D meandered probe-fed dual-band circularly polarized dielectric resonator antenna," Sensors, vol. 18, no. 8, pp. 2421-2431, Jul. 2018. [SCIE]

[116] S. Y. Kim, S. H. Cho, Y. G. Pu, S.-S. Yoo, M. Lee, K. C. Hwang, Y. Yang, and K.-Y. Lee, “A 39.5-dB SNR, 300-Hz frame-rate, 56×70-channel read-out IC for electromagnetic resonance touch panels,” IEEE Trans. Ind. Electron., vol. 65, no. 6, pp. 5001-5011, Jun. 2018. [SCIE]

[115] H. Abbasizadeh, I. Ali, B. S. Rikan, D.-S. Lee, Y. Pu, S.-S. Yoo, M. Lee, K. C. Hwang, Y. Yang, and K.-Y. Lee, “260-μW DCO with constant current over PVT variations ising FLL and adjustable LDO,” IEEE Trans. Circuits Syst. II, Exp. Briefs, vol. 65, no. 6, pp. 739-743, Jun. 2018. [SCIE]

[114] D.-S. Lee, S.-J. Kim, D. Kim, Y. Pu, S. S. Yoo, M. Lee, K. C. Hwang, Y. Yang, and K.-Y. Lee, “A design of fast-settling, low-power 4.19-MHz real-time clock generator with temperature compensation and 15-dB noise reduction,” IEEE Trans. Very Large Scale Integr. (VLSI) Syst., vol. 26, no. 6, pp. 1151-1158, Jun. 2018. [SCIE]

[113] S. J. Kim, D.-G. Kim, C. Kim, D. Lee, B. S. Rikan, Y. G. Pu, S. S. Yoo, M. Lee, K. C. Hwang, Y. Yang, and K.-Y. Lee, “A design of small area, 0.95 mW, 612–1152 MHz open loop injection-locked frequency multiplier for IoT sensor applications,” Sensors, vol. 18, no. 6, pp. 1777-1789, Jun. 2018. [SCIE]

[112] T. T. K. Nga, S.-M. Park, Y.-J. Park, S.-H. Park, S. Y. Kim, T. V. C. Thuong, M. Lee, K. C. Hwang, Y. Yang, and K.-Y. Lee, “A wide input range buck-boost DC–DC converter using hysteresis triple-mode control technique with peak efficiency of 94.8% for rf energy harvesting applications,” Energies, vol. 11, no. 7, p. 1618, Jun. 2018. [SCIE]

[111] Y.-J. Park, Z. H. N. Khan, S. J. Oh, B. G. Jang, N. Ahmad, D. Khan, H. Abbasizadeh, S. A. A. Shah, Y. G. Pu, K. C. Hwang, Y. Yang, M. Lee, and K.-Y. Lee, “Single inductor-multiple output DPWM DC-DC boost converter with a high efficiency and small area,” Energies, vol. 11, no. 4, p. 725, Mar. 2018. [SCIE]

[110] I. Ali, B. S. Rikhan, D.-G. Kim, D.-S. Lee, M. R. U. Rehman, H. Abbasizadeh, M. Asif, M. Lee, K. C. Hwang, Y. Yang, and K.-Y. Lee, “Design of a low-power, small-area AEC-Q100-compliant SENT transmitter in signal conditioning IC for Automotive pressure and temperature complex sensors in 180 Nm CMOS technology,” Sensors, vol. 18, no. 5, p. 1555, May. 2018. [SCIE]

[109] D. Khan, H. Abbasizadeh, S.-Y. Kim, Z. H. N. Khan, S. A. A. Shah, Y. G. Pu, K. C. Hwang, Y. Yang, M. Lee, and K.-Y. Lee, “A design of ambient RF energy harvester with sensitivity of− 21 dBm and power efficiency of a 39.3% using internal threshold voltage compensation,” Energies, vol. 11, no. 5, p. 1258, May. 2018. [SCIE]

[108] S. Y. Kim, B. S. Rikan, Y. G. Pu, S.-S. Yoo, M. Lee, K. C. Hwang, Y. Yang, and K.-Y. Lee, “A high noise immunity, 28×16-channel finger touch sensing IC using OFDM and frequency translation technique,” Sensors, vol. 18, no. 5, p. 1652, May. 2018. [SCIE]

[107] O. H. Kwon, S. Lee, J. M. Lee, and K. C. Hwang, "A compact, low-profile log-periodic meandered dipole array antenna with an artificial magnetic conductor," Int. J. Antennas Propag., Article ID 7261076, 10 pages, 2018. [SCIE]

[106] S. Trinh-Van, Y. Yang, K.-Y. Lee, and K. C. Hwang, "Broadband circularly polarized slot antenna loaded by a multiple-circular-sector patch," Sensors, vol. 18, no. 5, p. 1576, May 2018. [SCIE]

[105] Y.-J. Park, B.G. Jang, S.-M. Park, H.-C. Ryu, S. J. Oh, S.-Y. Kim, Y.G. Pu, S.-S Yoo, K. C. Hwang, Y. Yang, M. Lee, and K.-Y. Lee, "A triple-mode wireless power-receiving unit with 85.5% system efficiency for A4WP, WPC and PMA applications," IEEE Trans. Power Electron., vol. 33, no. 4, pp. 3141-3156, Apr. 2018. [SCI]

[104] B. S. Rikan, H. Abbasizadeh, S.-H. Cho, S.-Y. Kim, I. Ali, S. Kim, D.S. Lee, Y.G. Pu, M. Lee, K. C. Hwang, Y. Yang, and K.-Y. Lee, "A 6-bit 4 MS/s 26fJ/conversion-step segmented SAR ADC with reduced switching energy for BLE," Int. J. Circuit Theory Appl., vol. 46, no. 3, Mar. 2018. [SCI]

[103] S. Trinh-Van, J. M. Lee, Y. Yang, K.-Y. Lee, and K. C. Hwang, "Improvement of RF wireless power transmission using a circularly polarized retrodirective antenna array with EBG structures," Appl. Sci., vol. 8, no. 3, p. 324, Feb. 2018. [SCIE]

[102] Z. H. N. Khan, Y.-J. Park, S. J. Oh, B. G. Jang, S.-M. Park, H. Abbasizadeh, Y. G. Pu, K. C. Hwang, Y. Yang, M. Lee, and K.-Y. Lee, “Design of peak efficiency of 85.3% WPC/PMA wireless power receiver using synchronous active rectifier and multi feedback low-dropout regulator,” Energies, vol. 11, no. 3, p. 479, Feb. 2018. [SCIE]

[101] S. Lee, J. M. Lee, K. C. Hwang, S. Park, and S. Lee, "Hybrid robust optimization for the design of a smartphone metal frame antenna," Int. J. Antennas Propag., Article ID 6325806, 8 pages, 2018. [SCIE]

[100] W. Lee, H. Lee, H. Kang, W. Lim, J. Han, K. C. Hwang, K. Lee, and Y. Yang "X-band two-stage Doherty power amplifier based on pre-matched GaN-HEMTs," IET Microw. Antennas Propag., vol. 12, no. 2, pp. 179-184, Feb. 2018. [SCI]

[99] S.-Y. Kim, Y.-J. Park, I. Ali, T. T. K. Nga, H.-C. Ryu, Z. H. N. Khan, S.-M. Park, Y. G. Pu, M. Lee, K. C. Hwang, Y. Yang, and K.-Y. Lee,  "Design of a high efficiency DC–DC buck converter with two-step digital PWM and low power self-tracking zero current detector for IoT applications," IEEE Trans. Power Electron., vol. 33, no. 2, pp. 1428-1439, Feb. 2018. [SCI]

[98] T. Kim, H. Lee, W. Lim, S. Oh, H. Oh, K. C. Hwang, K.-Y. Lee, C. Park, and Y. Yang, "A compact single-stage wide-band balun: a 4:1 wide-band transmission-line balun based on a combination of two different ferrite cores," IEEE Microw. Mag., vol. 19, no. 1, pp. 78-83, Jan.-Feb. 2018. [SCIE]

[97] C. M. Song, G. Kwon, J. M. Lee, K.-Y. Lee, Y. Yang, and K. C. Hwang, "Theoretical computation of the capacitance of an asymmetric coplanar waveguide," J. Electr. Eng. Technol., vol. 13, no. 1, pp. 393-399, Jan. 2018. [SCIE]

[96] B. S. Rikan, H. Abbasizadeh, Y.-J. Park, H.-Y. Kang, S.Y. Kim, Y.G. Pu, M. Lee, K. C. Hwang, Y. Yang, and K.-Y. Lee, "A 10-bit 1 MS/s segmented dual- sampling SAR ADC with reduced switching energy," Microelectron. J., vol. 70, pp. 89-96, Dec. 2017. [SCIE]

[95] G. Kwon, J. Y. Park, D. H. Kim, and K. C. Hwang, "Optimization of a shared-aperture dual-band transmitting/receiving array antenna for radar applications," IEEE Trans. Antennas Propag., vol. 65, no. 12, pp. 7038-7051, Dec. 2017. [SCI]

[94] J. Bae, H. Koo, H. Lee, W. Lim, W. Lee, H. Kang, K. C. Hwang, K.-Y. Lee, and Y. Yang, "High-efficiency rectifier (5.2 GHz) using a Class-F Dickson charge pump", Microw. Opt. Technol. Lett., vol. 59, no. 12, pp. 3018-3023, Dec. 2017. [SCIE]

[93] H. Lee, W. Lim, J. Bae, W. Lee, H. Kang, K. C. Hwang, K.-Y. Lee, C.-S. Park, and Y. Yang, "Highly efficient fully integrated GaN-HEMT Doherty power amplifier based on compact load network", IEEE Trans. Microw. Theory Techn., vol. 65, no. 12, pp. 5203-5211, Dec. 2017. [SCI]

[92] H. Oh, H. Kang, H. Lee, H. Koo, M. Kim, W. Lee, W. Lim, C.-S. Park, K. C. Hwang, K.-Y. Lee, and Y. Yang, "Doherty power amplifier based on the fundamental current ratio for asymmetric cells", IEEE Trans. Microw. Theory Techn., vol. 65, no. 11, pp. 4190-4197, Nov. 2017. [SCI]

[91] T. Nguyen Thi, S. Trinh-Van, K.-Y. Lee, Y. Yang, and K. C. Hwang, "Dual-band circularly polarized four-arm Spidron fractal antenna for Ku-band satellite communication," Electromagnetics, vol. 37, no. 8, pp. 550-560, Nov. 2017. [SCI]

[90] O. H. Kwon, W. B. Park, S. Lee, J. M. Lee, Y. M. Park, and K. C. Hwang, "3D-printed super-wideband Spidron fractal cube antenna with laminated copper," Appl. Sci., vol. 7, no. 10, p. 979, Sep. 2017. [SCIE]

[89] H. Lee, W. Lim, J. Bae, W. Lee, H. Kang, K.-Y. Lee, K. C. Hwang, and Y. Yang "VHF/UHF broadband four-way power combiner/divider using 0° hybrid and impedance transformer based on transmission lines," IET Microw. Antennas Propag., vol. 11, no. 12, pp. 1748-1753, Sep. 2017. [SCI]

[88] Y.-J. Park, J.-H. Park, H.-J. Kim, H. Ryu, S. Y. Kim, Y. G. Pu, K. C. Hwang, Y. Yang, M. Lee, and K.-Y. Lee, "A design of a 92.4% efficiency triple-mode control DC-DC buck converter with low power retention mode and adaptive zero current detector for IoT/wearable applications," IEEE Trans. Power Electron., vol. 32, no. 9, pp. 6946-6960, Sep. 2017. [SCI]

[87] A. Altaf, J.-W. Jung, Y. Yang, K.-Y. Lee, and K. C. Hwang, "Vertical-strip-fed broadband circularly polarized dielectric resonator antenna," Sensors, vol. 17, no. 8, p. 1911, Aug. 2017. [SCIE]

[86] H. Kang, H. Lee, H. Oh, W. Lee, C.-S. Park, K. C. Hwang, K. Y. Lee, and Y. Yang, "Symmetric three-way Doherty power amplifier for high efficiency and linearity," IEEE Trans. Circuits Syst. II, Exp. Briefs, vol. 64, no. 8, pp. 862-866, Aug. 2017. [SCI]

[85] S. Lee, Y. Yang, K.-Y. Lee, and K. C. Hwang, "Circularly polarized CHANEL-logo antenna for GNSS applications," J. Electromagn. Waves Appl., vol. 31, no. 14, pp. 1434-1443, 2017. [SCIE]

[84] A. S. Hayder, Y.-J. Park, S. Y Kim., Y.-G. Pu, S.-S. Yoo, Y. Yang, M. Lee, K. C. Hwang, and K.-Y. Lee "Digitally controlled single-inductor multiple-output synchronous DC-DC boost converter with smooth loop handover using 55 nm process," J. Power Electron., vol. 17, no. 3, pp. 821-834, May 2017. [SCIE]

[83] S. Y. Kim, H. Abbasizadeh, I. Ali, H. Kim, S. H. Cho, Y. G. Pu, S.-S. Yoo, M. Lee, K. C. Hwang, Y. Yang, and K.-Y. Lee, "An inductive 2-D position detection IC with 99.8% accuracy for automotive EMR gear control system," IEEE Trans. Very Large Scale Integr. (VLSI) Syst., vol. 25, no. 5, pp. 1731-1741, May 2017. [SCI]

[82] A. Altaf, Y. Yang, K.-Y. Lee, and K. C. Hwang, "Wideband circularly polarized spidron fractal slot antenna with an embedded patch," Int. J. Antennas Propag., Article ID 3595620, 7 pages, 2017. [SCIE]

[81] B. G. Jang, A. S. Hayder, S. H. Do, S. H. Cho, D. S. Lee, Y. G. Pu, K. C. Hwang, Y. Yang, and K.-Y. Lee, "A design of 10-bit, 10 MS/s pipelined ADC with time-interleaved SAR," Microelectron. J., vol. 62, pp. 79-84, Apr. 2017. [SCI]

[80] H. Lee, W. Lim, W. Lee, H. Kang, J. Bae, C.-S. Park, K. C. Hwang, K.-Y. Lee, and Y. Yang, "Compact load network for GaN-HEMT Doherty power amplifier IC using left-handed and right-handed transmission lines," IEEE Microw. Compon. Lett., vol. 27, no. 3, pp. 293-295, Mar. 2017. [SCI]

[79] D. Hwang, K. C. Hwang, D. I. Kim, and T.-J. Lee, "Self-energy recycling for RF powered multi-antenna relay channels," IEEE Trans. Wireless Commun., vol. 16, no. 2, pp. 812-824, Feb. 2017. [SCI]

[78] T. Nguyen-Trung, Y. Yang, K.-Y. Lee, and K. C. Hwang, "Dual circularly-polarized Spidron fractal slot antenna," Electromagnetics, vol. 37, no. 1, pp. 40-48, 2017. [SCI]

[77] H. Lee, J. Kwon, W. Lim, W. Lee, H. Kang, K. C. Hwang, K.-Y. Lee, C.-S. Park, and Y. Yang, "Optimized current of the peaking amplifier for two-stage Doherty power amplifier," IEEE Trans. Microw. Theory Techn., vol. 65, no. 1, pp. 209-217, Jan. 2017. [SCI]

[76] S. Trinh-Van, Y. Yang, K.-Y. Lee, and K. C. Hwang, "A wideband circularly polarized antenna with a multiple-circular-sector dielectric resonator," Sensors, vol. 16, no. 11, p. 1849, Nov. 2016. [SCIE]

[75] H. Kim, Y.-J. Park, J.-H. Park, H.-C. Ryu, Y.-G. Pu, M. Lee, K. Hwang, Y. Yang, and K.-Y. Lee, "A wide input range, 95.4% power efficiency DC-DC buck converter with a phase-locked loop in 0.18 μm BCD," J. Power Electron., vol. 16, no. 6, pp. 2024-2034, Nov. 2016. [SCIE]

[74] S. Lee, J. M. Lee, J. Yun, O. H. Kwon, H. J. Lim, W. B. Park, and K. C. Hwang, "Dual circularly polarized falcate-shaped slot antenna," Microw. Opt. Technol. Lett., vol. 58, no. 9, pp. 2245-2250, Sep. 2016. [SCIE]

[73] S. Trinh-Van, Y. Yang, K.-Y. Lee, and K. C. Hwang, "A wideband circularly polarized pixelated dielectric resonator antenna," Sensors, vol. 16, no. 9, p. 1349, Sep. 2016. [SCIE]

[72] W. Lim, H. Lee, H. Kang, W. Lee, K.-Y. Lee, K. C. Hwang, Y. Yang, and C.-S. Park, "2.6 GHz GaN-HEMT power amplifier MMIC for LTE small-cell applications," J. Semicond. Technol. Sci., vol. 16, no. 3, pp. 339-345, Jun. 2016. [SCIE]

[71] S. Cho, D. S. Lee, J. Lee, H.-G. Park, Y. G. Pu, S.-S. Yoo, K. C. Hwang, Y. Yang, C.-S. Park, and K.-Y. Lee, "A 4-Channel multi-rate VCSEL driver with automatic power, magnitude calibration using high-speed time-interleaved flash-SAR ADC in 0.13 μm CMOS," J. Semicond. Technol. Sci., vol. 16, no. 3, pp. 274-286, Jun. 2016. [SCIE]

[70] H.-G. Park, J.-H. Jang, H.-J. Kim, Y.-J. Park, S. J. Oh, Y. G. Pu, K. C. Hwang, Y. Yang, and K.-Y. Lee, "A design of a wireless power receiving unit with high efficiency 6.78 MHz active rectifier using shared DLLs for magnetic resonant A4WP applications," IEEE Trans. Power Electron., vol. 31, no. 6, pp. 4484-4498, Jun. 2016. [SCI]

[69] Y.-J. Park, J.-H. Park, H. Kim, Y. G. Pu, K. C. Hwang, Y. Yang, C.-S. Park, and K.-Y. Lee, "A design of power managements IC with peak efficiency of 92.8 % step-up converter and peak efficiency of 93.8 % step-down converter for power transmitting unit of A4WP applications in 0.18 μm BCD," Analog Integr. Circuits Process., vol. 88, no. 1, pp. 115-125,  May 2016. [SCI]

[68] G. Kwon, J.-Y. Park, and K. C. Hwang, "Design of a subarray configuration for multifunction radars using a nested optimization scheme," Electromagnetics, vol. 36, no. 4, pp. 276-285, 2016. [SCI]

[67] D.-S. Lee, S.H. Cho, S. Y. Kim, J. Y. Lee, K. C. Hwang, Y. Yang, M.-K. Seo, Y.G. Pu, and K.-Y. Lee, "A low phase noise 30-GHz frequency synthesizer with linear transconductance VCO and dual-injection-locked frequency divider," Analog Integr. Circuits Process., vol. 86, no. 3, pp. 365-376, Mar. 2016. [SCI]

[66] D. S. Lee, J. Lee, H.-G. Park, J. W. Choi, S. H. Park, I. S. Kim, Y. G. Pu, J. Y. Kim, K. C. Hwang, Y. Yang, M. Seo, and K.-Y. Lee, "Design of a wide-frequency-range, low-power transceiver with automatic impedance-matching calibration for TV-white-space application," J. Semicond. Technol. Sci., vol. 16, no. 1, pp. 126-142, Feb. 2016. [SCIE]

[65] Y.-J. Park, H.-G. Park, J. Lee, S. J. Oh, J. H. Jang, S. Y. Kim, Y. G. Pu, K. C. Hwang, Y. Yang, M. Seo, and K.-Y. Lee, "A design of wide input range triple-mode active rectifier with peak efficiency of 94.2 % and maximum output power of 8 W for wireless power receiver in 0.18 µM BCD," Analog Integr. Circuits Process., vol. 86, no. 2, pp. 255-265, Feb. 2016. [SCI]

[64] S. Trinh-Van, S. C. Song, S.-H. Seo, and K. C. Hwang, "Waveguide slot array antenna with a hybrid-phase feed for grating lobe reduction," Int. J. Antennas Propag., Article ID 4825924, 8 pages, 2016. [SCIE]

[63] J. Ham, J. Bae, H. Kim, M. Seo, H. Lee, K. C. Hwang, K.-Y. Lee, C.-S. Park, D. Heo, and Y. Yang, "CMOS power amplifier integrated circuit with dual-mode supply modulator for mobile terminals," IEEE Trans. Circuits Syst. I, Reg. Papers, vol. 63, no. 1, pp. 157-167, Jan. 2016. [SCI]

[62] M. Kim, W. Lee, J. Bae, H. Lee, K. C. Hwang, K.-Y. Lee, C.-S. Park, and Y. Yang, "Balanced/unbalanced wideband: a wideband, bifilar transmission-line balun," IEEE Microw. Mag., vol. 17, no. 1, pp. 65-69, Jan. 2016. [SCIE]

[61] S. Trinh-Van, G. Kwon, and K. C. Hwang, "Planar super-wideband loop antenna with asymmetric coplanar strip feed," Electron. Lett., vol. 52, no. 2, pp. 96-98, Jan. 2016. [SCI]

[60] J. M. Lee, S.-J. Kim, G. Kwon, C. M. Song, Y. Yang, K.-Y. Lee, and K. C. Hwang, "Circularly polarized semi-eccentric annular dielectric resonator antenna for X-band applications," IEEE Antennas Wireless Propag. Lett., vol. 14, pp. 1810-1813, 2015. [SCIE]

[59] A. Altaf, Y. Yang, K.-Y. Lee, and K. C. Hwang, "Circularly polarized Spidron fractal dielectric resonator antenna," IEEE Antennas Wireless Propag. Lett., vol. 14, pp. 1806-1809, 2015. [SCIE]

[58] H. Kim, J. Bae, J. Ham, J. Gu, M. Seo, K. C. Hwang, K.-Y. Lee, C.-S. Park, and Y. Yang, "Efficiency enhanced CMOS digitally controlled dynamic bias switching power amplifier for LTE," Microw. Opt. Technol. Lett., vol. 57, no. 10, pp. 2315-2321, Oct. 2015. [SCIE]

[57] C. M. Song, G. Kwon, J. M. Lee, Y. Yang, K.-Y. Lee, and K. C. Hwang, "Electrostatic field penetration through a slot on a conducting half-plane," J. Electrost., vol. 77, pp. 21-26, Oct. 2015. [SCIE]

[56] J. M. Lee, G. Kwon, C. M. Song, K.-Y. Lee, Y. Yang, and K. C. Hwang, "Wideband circularly polarized Spidron fractal slot antenna with a grooved dielectric resonator," J. Electromagn. Waves Appl., vol. 29, no. 14, pp. 1942-1951, Sep. 2015. [SCIE]

[55] S. Trinh-Van and K. C. Hwang, "Miniaturized broadband top-loaded planar monopole antenna with binary-encoded sleeves," Electron. Lett., vol. 51, no. 13, pp. 968-970, Jun. 2015. [SCI]

[54] J.-H. Kwon, M.-C. Seo, H.-S. Lee, J.-H. Gu, J.-H. Ham, K. C. Hwang, K.-Y. Lee, C.-S. Park, and Y. Yang, "Broadband Doherty power amplifier based on an asymmetric load matching networks," IEEE Trans. Circuits Syst. II, Exp. Briefs, vol. 62, no. 6, pp. 533-537, Jun. 2015. [SCI]

[53] J. Ham, J. Bae, M. Seo, H. Lee, K. C. Hwang, K.-Y. Lee, and Y. Yang, "Dual-mode supply modulator for CMOS envelope tracking power amplifier integrated circuit," Microw. Opt. Technol. Lett., vol. 57, no. 6, pp. 1338-1343, Jun. 2015. [SCIE]

[52] S. Kim, J. Lee, S. Oh, I. Kim, Y.-J. Park, H. D. Tiwari, H.-G. Park, Y. G. Pu, K. C. Hwang, Y. Yang, M. Seo, and K.-Y. Lee, "A 1.248-2.918 Gb/s low-power transmitter for MIPI M-PHY with 2-step impedance calibration loop in 0.11 um CMOS," Analog Integr. Circuits Process., vol. 83, no. 2, pp. 129-142, May 2015. [SCI]

[51] D.-S. Lee, J.-H. Jang, H.-G. Park, Y. Pu, K. C. Hwang, Y. Yang, M.-K. Seo, and K.-Y. Lee, "A wide-locking-range dual injection-locked frequency divider with an automatic frequency calibration loop in 65-nm CMOS," IEEE Trans. Circuits Syst. II, Exp. Briefs, vol. 62, no. 4, pp. 327-331, Apr. 2015. [SCI]

[50] S. Trinh-Van, K. C. Hwang, Y. Yang, and K.-Y. Lee, "A printed quasi-Yagi antenna with a coupled slotline feed," J. Electromagn. Waves Appl., vol. 29, no. 3, pp. 402-409, Feb. 2015. [SCIE]

[49] J. Lee, H. G. Park, I. S. Kim, Y. G. Pu, K. C. Hwang, Y. Yang, K.-Y. Lee, and M. Seo, "A 6 Gb/s low power transimpedance amplifier with inductor peaking and gain control for 4-channel passive optical network in 0.13 μm CMOS," J. Semicond. Technol. Sci., vol. 15, no. 1, pp. 122-130, Feb. 2015. [SCIE]

[48] J. Ham, H. Jung, J. Bae, W. Lim, K. C. Hwang, K.-Y. Lee, C.-S. Park, and Y. Yang, "Dual bias modulator for envelope tracking and average power tracking modes for CMOS power amplifier," J. Semicond. Technol. Sci., vol. 14, no. 6, pp. 802-809, Dec. 2014. [SCIE]

[47] H.-G. Park, J.-A Jang, S. H. Cho, J. Lee, S.-Y. Kim, H. D. Tiwari, Y. G. Pu, K. C. Hwang, Y. Yang, M. Seo, and K.-Y. Lee, "A wide output range, high power efficiency reconfigurable charge pump in 0.18 μm BCD process," J. Semicond. Technol. Sci., vol. 14, no. 6, pp. 777-788, Dec. 2014. [SCIE]

[46] G. Kwon, K. C. Hwang, Y. Yang, and K.-Y. Lee, "Mellin transform approach for the capacitance computation of asymmetric coplanar striplines," Electromagnetics, vol. 34, no. 8, pp. 617-624, Nov. 2014. [SCI]

[45] G. Kwon and K. C. Hwang, "Mellin transform solution for electrostatic field from a line charge in a slotted hollow wedge," J. Electromagn. Waves Appl., vol. 28, no. 6, pp. 729-740, Apr. 2014. [SCIE]

[44] T. Nguyen Thi, S. Trinh-Van, G. Kwon, and K. C. Hwang, "Single-feed triple band circularly polarized Spidron fractal slot antenna," Prog. Electromagn. Res., vol. 143, pp. 207-221, 2013. [SCIE]

[43] J. G. Baek, K. C. Hwang, and H. S. Kim, "Broadband circularly polarised hexagonal slot antenna excited by a tapered microstrip feeder," Int. J. Electron., vol. 100, no. 12, pp. 1667-1674, Dec. 2013. [SCI]

 

[42] J. G. Baek and K. C. Hwang, "Triple-band unidirectional circularly polarized hexagonal slot antenna with multiple L-shaped slits," IEEE Trans. Antennas Propag., vol. 61, no. 9, pp. 4831-4835, Sep. 2013. [SCI]

 

[41] G. Kwon and K. C. Hwang, "Corrugated subwavelength aperture antenna with a superstrate layer," Electromagnetics, vol. 33, no. 6, pp. 452-459, Aug. 2013. [SCI]

 

[40] S. Trinh-Van, G. Kwon, K. C. Hwang, and Y. B. Park, "Uniplanar EBG structure based on a modified Spidron fractal and meander-line configuration," IEICE Electron. Express, vol. 10, no. 17, Article ID 20130596, Aug. 2013. [SCIE]

 

[39] H. B. Kim, K. C. Hwang, and H. S. Kim, "Cavity-backed two-arm spiral antenna with a ring-shaped absorber for partial discharge diagnosis," J. Electr. Eng. Technol., vol. 8, no. 4, pp. 856-862, Jul. 2013. [SCIE]

 

[38] S. W. Jeong, K. C. Hwang, J.-Y. Park, S.-J. Kim, and D.-H. Kim, "Spidron fractal tapered slot antenna for dual-band radar applications," J. Electromagn. Waves Appl., vol. 27, no. 11, pp. 1329-1337, Jul. 2013. [SCIE]

 

[37] J. H. Kim and K. C. Hwang, "Compact folded monopole antenna excited by a conductor-backed coplanar waveguide with vias," ETRI J., vol. 35, no. 3, pp. 534-537, Jun. 2013. [SCI]

 

[36] G. Kwon, K. C. Hwang, J.-Y. Park, S.-J. Kim, and D.-H. Kim, "GA-enhanced thin square array with cyclic difference sets," IEICE Trans. Electron., vol. E96C, no. 4, pp. 612-614, Apr. 2013. [SCIE]

 

[35] T. Nguyen Thi, K. C. Hwang, and H. B. Kim, "Dual-band circularly polarised Spidron fractal microstrip patch antenna for Ku-band satellite communication applications," Electron. Lett., vol. 49, no. 7, pp. 444-445, Mar. 2013. [SCI]

 

[34] S. Trinh-Van, H. B. Kim, G. Kwon, and K. C. Hwang, "Circularly polarized Spidron fractal slot antenna arrays for broadband satellite communications in Ku-band," Prog. Electromagn. Res., vol. 137, pp. 203-218, 2013. [SCIE]

 

[33] S. Trinh-Van and K. C. Hwang, "Meandered UC-EBG structure for a reduction of the mutual coupling in a patch antenna array," IEICE Electron. Express, vol. 9, no. 22, pp. 1748-1755, Nov. 2012. [SCIE]

 

[32] S. J. Jeong and K. C. Hwang, "Stub-loaded bent monopole antenna with independent frequency tuning capability for compact wireless USB dongles," Microw. Opt. Technol. Lett., vol. 54, no. 11, pp. 2548-2552, Nov. 2012. [SCIE]

 

[31] S. J. Jeong, K. C. Hwang, and D.-I. Hwang, "Compact circularly polarized antenna with a capacitive feed for GPS/GLONASS applications," ETRI J., vol. 34, no. 5, pp. 767-770, Oct. 2012. [SCI]

 

[30] H. B. Kim and K. C. Hwang, "Dual-port Spidron fractal slot antenna for multiband gap-filler applications," IEEE Trans. Antennas Propag., vol. 60, no. 10, pp. 4940-4943, Oct. 2012. [SCI]

 

[29] J. H. Kim, K. C. Hwang, and H. S. Kim, "Ultra-wideband folded monopole antenna for WiBro/WLAN/WiMAX/UWB wireless USB dongles," IEICE Trans. Commun., vol. E95B, no. 9, pp. 2983-2986, Sep. 2012. [SCI]

 

[28] G. Kwon and K. C. Hwang, "Capacitance computation of coplanar waveguide using the Mellin transform and mode-matching," IEEE Microw. Compon. Lett., vol. 22, no. 8, pp. 385-387, Aug. 2012. [SCI]

 

[27] K. C. Hwang, "A stub-loaded perturbed monopole antenna for wireless USB dongles," Microw. Opt. Technol. Lett., vol. 53, no. 3, pp. 519-523, Mar. 2011. [SCIE]

 

[26] K. C. Hwang, "Two-dimensional analysis of a subwavelength aperture antenna with a grooved conducting flange," Electromagnetics, vol. 31, no. 1, pp. 18-28, Feb. 2011. [SCI]

 

[25] H. B. Kim, K. C. Hwang, and Y. B. Park, "Compact stub-loaded meander-line antenna for wireless USB dongle devices," Microw. Opt. Technol. Lett., vol. 52, no. 10, pp. 2279-2282, Oct. 2010. [SCIE]

 

[24] S. J. Jeong and K. C. Hwang, "Circular hook-shaped wireless USB dongle antenna with an open stub," IEICE Electron. Express, vol. 7, no. 18, pp. 1370-1375, Sep. 2010. [SCIE]

 

[23] S. J. Jeong and K. C. Hwang, "Novel hexaband folded meander-patch antenna for wireless USB dongles," IEICE Electron. Express, vol. 7, no. 16, pp. 1214-1219, Aug. 2010. [SCIE]

 

[22] S. J. Jeong and K. C. Hwang, "Novel shorted meander-line USB dongle antenna with a compact ground plane," ETRI J., vol. 32, no. 4, pp. 610-613, Aug. 2010. [SCI]

 

[21] K. C. Hwang, "A novel meander-grooved polarization twist reflector," IEEE Microw. Wireless Compon. Lett., vol. 20, no. 4, pp. 217-219, Apr. 2010. [SCI]

 

[20] S. J. Jeong and K. C. Hwang, "Compact loop-coupled spiral antenna for multiband wireless USB dongles," Electron. Lett., vol. 46, no. 6, pp. 388-390, Mar. 2010. [SCI]

 

[19] J. J. Kim, H. J. Eom, and K. C. Hwang, "Electromagnetic scattering from a slotted conducting wedge," IEEE Trans. Antennas Propag., vol. 58, no. 1, pp. 222-226, Jan. 2010. [SCI]

 

[18] K. C. Hwang, "Design and optimization of a broadband waveguide magic-T using a stepped conducting cone," IEEE Microw. Compon. Lett., vol. 19, no. 9, pp. 539-541, Sep. 2009. [SCI]

 

[17] K. C. Hwang and H. J. Eom, "Radiation from a slotted rectangular waveguide filled with asymmetrically biased ferrite slabs," Electromagnetics, vol. 29, no. 6, pp. 435-446, Sep. 2009. [SCI]

 

[16] K. C. Hwang, "Scattering from a grooved conducting wedge," IEEE Trans. Antennas Propag., vol. 57, no. 8, pp. 2498-2500, Aug. 2009. [SCI]

 

[15] K. C. Hwang, "Dual-wideband monopole antenna using a modified half-Sierpinski fractal gasket," Electron. Lett., vol. 45, no. 10, pp. 487-489, May 2009. [SCI]

 

[14] K. C. Hwang, "Broadband circularly-polarised Spidron fractal slot antenna," Electron. Lett., vol. 45, no. 1, pp. 3-4, Jan. 2009. [SCI]

 

[13] K. C. Hwang, "Optimization of a nonuniformly slotted rectangular waveguide antenna," Microw. Opt. Technol. Lett., vol. 50, no. 7, pp. 1935-1937, Jul. 2008. [SCIE]

 

[12] Y. B. Park and K. C. Hwang, "Electromagnetic wave scattering from annular apertures in a thick conducting plane," Electromagnetics, vol. 28, no. 4, pp. 265-282, May 2008. [SCI]

 

[11] Y. B. Park, K. C. Hwang, and I. Park, "Mode matching analysis of a tapered coaxial tip in a parallel-plate waveguide," IEEE Microw. Compon. Lett., vol. 18, no. 3, pp. 152-154, Mar. 2008. [SCI]

 

[10] K. C. Hwang, "Optimisation of broadband twist reflector for Ku-band application," Electron. Lett., vol. 44, no. 3, pp. 210-211, Jan. 2008. [SCI]

 

[9] K. C. Hwang, "A modified Sierpinski fractal antenna for multiband application," IEEE Antennas Wireless Propag. Lett., vol. 6, pp. 357-360, Oct. 2007. [SCIE]

 

[8] K. C. Hwang and H. J. Eom, "Radiation from a ferrite-loaded ground plane with multiple grooves," Int. J. Microw. Opt. Tech., vol. 1, no. 2, pp. 849-853, Aug. 2006.

 

[7] K. C. Hwang and H. J. Eom, "Capacitance of a slotted conducting wedge," IEEE Microw. Compon. Lett., vol. 16, no. 6, pp. 372-374, Jun. 2006. [SCI]

 

[6] K. C. Hwang and H. J. Eom, "Ferrite-loaded groovy antenna," IEEE Trans. Antennas Propag., vol. 53, no. 12, pp. 4172-4175, Dec. 2005. [SCI]

 

[5] K. C. Hwang and H. J. Eom, "Ferrite-filled slot array antenna with superstrate," Electron. Lett., vol. 41, no. 18, pp. 996-997, Sep. 2005. [SCI]

 

[4] Y. B. Park, H. J. Eom, and K. C. Hwang, "Analysis of coupling between array of open-ended coaxial lines in an infinite ground plane," IEEE Trans. Antennas Propag., vol. 53, no. 8, pp. 2768-2772, Aug. 2005. [SCI]

 

[3] K. C. Hwang and H. J. Eom, "Tunable notch filter of ferrite-filled grooves in parallel plates," IEEE Microw. Compon. Lett., vol. 15, no. 5, pp. 363-365, May 2005. [SCI]

 

[2] K. C. Hwang and H. J. Eom, "Radiation from a ferrite-filled rectangular waveguide with multiple slits," IEEE Microw. Compon. Lett., vol. 15, no. 5, pp. 345-347, May 2005. [SCI]

 

[1] K. C. Hwang and H. J. Eom, "Scattering analysis for a circular to rectangular T-junction," Microw. Opt. Technol. Lett., vol. 41, no. 3, pp. 231-234, May 2004. [SCIE]

 

Sungkyunkwan University

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