Publications

[130] Hyunwoong Shin and Hyeongdong Kim, "Enhancing Efficiency for Wideband Antennas by Controlling the Parasitic Resonance of the Feed Structure," Journal of Electromagnetic Engineering and Science, vol. 22, no. 4, pp. 399-402, Jul. 2022

[129] Hyunwoong Shin and Hyeongdong Kim, "Wideband Mobile Antenna Design Using a Resonant Feeding Structure," Journal of Electromagnetic Engineering and Science, vol. 22, no. 3, pp. 252-255, May. 2022

[128] Hyunwoong Shin and Hyeongdong Kim, "MIMO antenna for IOT devices with reconfigurable radiation pattern," Electronics Letters, vol. 58, no. 7, pp. 286-287, Mar. 2022

[127] Hoseung Lee, Jihwan Jeon, Donghee Park, Hyunwoong Shin and Hyeongdong Kim, "MIMO antenna performance with isolator," Microwave and Optical Technology Letters, vol. 64, no. 5, pp. 946-952, Feb. 2022

[126] Hyunwoong Shin, Shan Jiang, Jaeseong Yang, Hyung-hoon Kim and Hyeongdong Kim, "A new ultra-wideband miniaturized antenna with a double-branch radiator," Microwave and Optical Technology Letters, vol. 62, no. 5, pp. 2085-2089, Feb 2020

[125] Donghee Park, Jihwan Jeon, and Hyeongdong Kim, "Antenna sensitivity variation depending on the installation of a shield can," Microwave and Optical Technology Letters, vol. 62, no. 6, pp. 2311-2315, Jun. 2020

[124] Donghee Park, Longyue Qu, and Hyeongdong Kim, "A simple and efficient technique to improve the performance of compact circular-polarized slot antenna," Microwave and Optical Technology Letters, vol. 62, no. 2, pp. 852-859, Feb. 2020

[123] Min-Gi Kim and Hyeongdong Kim, "Miniaturized dual-band loop-type ground radiation antenna with enhanced bandwidth for mobile devices", Microwave and Optical Technology Letters, vol. 62, no. 1, pp. 239 - 243, Jan. 2020.

[122] Zeeshan Zahid and Hyeongdong Kim, "Coupling mechanism of a loop-type ground radiation antenna", ETRI Journal, Vol. 41, No. 4, pp. 528-535, Aug. 2019

[121] Sungjin Moon and Hyeongdong Kim, "Bandwidth enlargement of low-profile slot antenna using ground resonance mode", Micowave and Optical Technology Letters, vol. 61, no. 2, Feb. 2019

[120] Longyue Qu, Yunxue Xu, Haiyan Piao, and Hyeongdong Kim, “Antenna performance improvement by utilizing a small parasitic slot in stacked PCBs for IoT devices,” Journal of Electromagnetic Waves and Applications, vol. 33, no. 17, pp. 2287–2295, Oct. 2019

[119] Donghee Park, Longyue Qu, and Hyeongdong Kim, "Compact circularly polarised antenna utilising the radiation of the ground plane based on the theory of characteristic modes," IET Microwaves, Antennas & Propagation, Vol. 13, No. 10, pp.1509 – 1514, Aug. 2019 (SCI)

[118] Longyue Qu, Haiyan Piao, and Hyeongdong Kim, “Compact wideband MIMO mobile-antenna system design using mode-based decoupling techniques,” International Journal of RF and Microwave Computer-Aided Engineering, vol. 29, no. 8, Aug. 2019

[117] Zeeshan Zahid, Hongkoo Lee, Mingi Kim, Hyung-Hoon Kim, and Hyeongdong Kim, "Antenna design using speaker wire for a Bluetooth ear set", Microwave and Optical Technology Letters, Vol. 61, Iss. 3, pp. 747-752, Mar. 2019 (SCIE)

[116] Zeeshan Zahid, Longyue Qu, Hyung-Hoon Kim, Hyeongdong Kim, "Circularly Polarized Loop-Type Ground Radiation Antenna for IoT Applications", Journal of Electromagnetic Engineering and Science, Vol.19, No.3, pp153-158, Jul.2019

[115] Hongkoo Lee, Zeeshan Zahid, Hyeongdong Kim, "Loop-type ground radiation antenna for a C-shaped ground plane", Journal of Electromagnetic Engineering and Science, Vol.19, No.1, pp.1-5, Jan.2019

[114] Zeeshan Zahid, Longyue Qu, Hyung Hoon Kim, and Hyeongdong Kim, "Decoupler Design for MIMO Antennas of USB Dongle Applications Using Ground Mode Coupling Analysis", Progress In Electromagnetics Research M, Vol. 76, 113-122, 2018.(non-SCI)

[113] Jihoon Kim, Hyunwoong Shin, Mingi Kim, Hyeongdong Kim "Performance enhancement of mobile antenna by ground decomposition," Microwave and Optical Technology Letters, Vol. 60, Iss. 12, pp. 3006-3009, Dec. 2018 (SCIE)

[112] Sungjin Moon, Jihwan Jeon, Hyunwoong Shin, Hyung Hoon Kim, and Hyeongdong Kim, "Performance enhancement of ground radiation antenna by coupling with ground body," Microwave and Optical Technology Letters, Vol. 60, Iss. 12, pp. 3085-3087, Dec. 2018 (SCIE)

[111] Longyue Qu, and Hyeongdong Kim, "A Novel Single-Feed Dual-Element Antenna Using Phase Compensation and Magnitude Regulation to Achieve Circular Polarization,"IEEE Transactions on Antennas and Propagation, Vol. 66, No. 10, pp. 5098-5108, Oct. 2018 (SCI)

[110] Yunxue Xu, Longyue Qu, Hyung-Hoon Kim, and Hyeongdong Kim, "Improvement of Ground Radiation Antenna Performance Using Compact EBG in the Presence of Battery Effects," Electronics Letters, Vol. 54, No. 13, pp. 798-800, Jun. 2018 (SCI)

[109] Jongin Ryu, and Hyeongdong Kim, "Compact MIMO antenna for application to smart glasses using T-shaped ground plane," Microwave and Optical Technology Letters, Vol. 60, No. 8, pp. 2010-2013, Aug. 2018 (SCIE)

[108] Hongkoo Lee, Longyue Qu, and Hyeongdong Kim, "Antenna Sensitivity Enhancement using Ground Shorting Pin," Microwave and Optical Technology Letters, Vol. 60, No. 7, pp. 1630-1632, Jul. 2018 (SCIE)

[107] Longyue Qu, Zeeshan Zahid, Hyung-hoon Kim and Hyeongdong Kim, "Circular Polarized Ground Radiation Antenna for Mobile Applications," IEEE Transactions on Antennas and Propagation, Vol. 66, No. 5, pp. 2655-2660, May. 2018 (SCI)

[106] Longyue Qu,Haiyan Piao, Yunhao Qu, Hyung-hoon Kim and Hyeongdong Kim, "Dual-resonance based wideband antenna for integrated module applications," Electronics Letters, Vol 54, No 8, pp. 474–476, 19 Apr. 2018 (SCI)

[105] Jihwan Jeon, Longyue Qu, Hongkoo Lee, and Hyeongdong Kim “Ground Radiation Antenna for Mobile Devices Using Controlled Endless Metal Rim Mode,” ETRI Journal, Vol 40, No 2, Apr. 2018 (SCI)

[104] Zeeshan Zahid, Longyue Qu, Hyung-hoon Kim, and Hyeongdong Kim, "Circularly polarized loop-type ground radiation antenna for mobile devices using a resonance inductor and capacitor," Electronics Letters, Vol. 54, No. 5, pp. 262–264, Mar. 2018 (SCI)

[103] Longyue Qu,Haiyan Piao, Yunhao Qu, Hyung-hoon Kim and Hyeongdong Kim, "Circularly polarised MIMO ground radiation antennas for wearable devices," Electronics Letters, Vol. 54, No. 4, pp.189–190, 22 Feb. 2018 (SCI)

[102] Longyue Qu, Jihwan Jeon, Donghee Park ; Hyeongdong Kim, "Antenna Design Based on Quasi-Degenerate Characteristic Modes of Unbroken Metal Rim," IET Microwaves, Antennas & Propagation, Vol. 11, No. 15, pp. 2168 –2173, Dec. 2017 (SCI)

[101] Zeeshan Zahid, and Hyeongdong Kim, "Loop-type ground radiation antenna for a discontinuous square ring-shaped ground plane,"Electronics Letters, Vol. 53, No. 12, pp.760-762, Jun. 2017 (SCI)

[100] Sangmoon Yoo, Longyue Qu, Joonchul Kim and Hyeongdong Kim, "Mobile Antenna Performance Improvement by Ground Mode Tuning Using a Closed Loop," IET Microwaves, Antennas & Propagation, Vol. 11, No. 8, pp. 1121 – 1126, Jun. 2017 (SCI)

[99] Longyue Qu, Hoogkoo Lee, Hyunwoong Shin, Min-gi Kim, and Hyeongdong Kim, "MIMO Antennas Using Controlled Orthogonal Characteristic Modes by Metal Rims," IET Microwaves, Antennas & Propagation, Vol. 11, No. 7, pp. 1009 – 1015, 02 Jun. 2017. (SCI)

[98] Zeeshan Zahid, and Hyeongdong Kim, "Performance evaluation of loop-type ground radiation antenna based on its optimum impedance level" Electronics Letters, Vol. 53, No. 7, Mar. 2017 (SCI)

[97] Jihoon Kim, Longyue Qu, Haseok Jo, Rui Zhang, and Hyeongdong Kim, "A MIMO Antenna Design Based on the Characteristic Mode," Microwave and Optical Technology Letters, Vol. 59, No. 4, Apr. 2017 (SCIE)

[96] Longyue Qu, Rui Zhang, Hyunwoong Shin, Jihoon Kim and Hyeongdong Kim, "Mode-Controlled Wideband Slot-Fed Ground Radiation Antenna Utilizing Metal Loads for Mobile Applications," IEEE Transactions on Antennas and Propagation, Vol. 65, No. 2, pp. 867-872, Feb. 2017 (SCI)

[95] Zeeshan Zahid, and Hyeongdong Kim, "Enhancement technique for loop type ground radiation antenna using ground mode tuning structure," Microwave and Optical Technology Letters, Vol. 59, No. 2, Feb. 2017, pp. 476–478 (SCIE)

[94] Longyue Qu, Rui Zhang, Hyunwoong Shin, Jihoon Kim, and Hyeongdong Kim, "Performance Enhancement of Ground Radiation Antenna for Z-Wave Applications Using Tunable Metal Loads," Electronics Letters, Vol. 52, No. 22, pp. 1827-1828, Sep. 2016 (SCI)

[93] Min-gi Kim, Longyue Qu, Sungjin Moon, and Hyeongdong Kim, "Mobile Antenna Design Based on Controlling Current Distributions," Microwave and Optical Technology Letters, Vol. 58, No. 12, pp. 2937–2940, Sep.2016 (SCIE)

[92] Zeeshan Zahid, and Hyeongdong Kim, "Analysis of a Loop Type Ground Radiation Antenna Based on Equivalent Circuit Model," IET Microwaves, Antennas & Propagation, Vol.11, No. 1, pp. 23-28, Jun. 2016 (SCI)

[91] Hongkoo Lee, Jihwan Jeon, Longyue Qu, Hyunwoong Shin and Hyeongdong Kim, "Reduction of the head effect in mobile devices," Microwave and Optical Technology Letters, Vol. 58, No. 8, pp. 1806–1808, Aug. 2016 (SCIE)

[90] Longyue Qu, Rui Zhang, Hongkoo Lee, and Hyeongdong Kim, "Compact triple-band ground radiation antenna using two inner rectangular loops enclosed by two outer loops," Electronics Letters, Vol. 52, No. 10, pp. 790-792, May. 2016 (SCI)

[89] Jihwan Jeon, Zeeshan Zahid, Hyeongdong Kim, "Dual band loop-type ground radiation antenna for mobile devices," Microwave and Optical Technology Letters, Vol. 58, No. 3, Jan. 2016 (SCIE)

[88] Hyunwoong Shin, Jihwan Jeon and Hyeondong Kim, "Efficiency enhancement of wideband mobile antenna," Electronics Letters, Vol. 52, No. 3, pp. 179–181, Feb. 2016 (SCI)

[87] J. Cho, H. Kim, and K.-Y. Jung, “Simple transmission line model suitable for the electromagnetic pulse coupling analysis of twisted-wire pairs above ground,” IEICE Electronics Express, Vol. 13, No. 7, pp. 1-6, Apr. 2016

[86] Longyue Qu, Rui Zhang, Hyeongdong Kim, "Decoupling between ground radiation antennas with ground-coupled loop-type isolator for WLAN applications," IET Microwaves, Antennas & Propagation, Vol. 10, No. 5, pp. 546–552, Apr. 2016 (SCI)

[85] Hongkoo Lee, Jaesuk Lee, Sungjin Moon, Mingi Kim, and Hyeongdong Kim, "Multiband planar monopole antenna using coupling control feed structure for mobile handsets," Microwave and Optical Technology Letters, Vol. 57, No. 4, pp. 823–826, Apr. 2015 (SCIE)

[84] Rui Zhang, Hyunghoon Kim, and Hyeongdong Kim, “Triple-band ground radiation antenna for GPS, WiFi 2.4 and 5 GHz band applications," Electronics Letters, Vol. 51, No. 25, pp. 2082–2084, Dec. 2015 (SCI)

[83] Longyue Qu, Rui Zhang, Hyunghoon Kim, and Hyeongdong Kim, "Compact dual-band antenna using inverted-L loop and inner rectangular loop for WLAN applications,“ Electronics Letters, Vol. 51, No. 23, pp. 1843–1844, Nov. 2015 (SCI)

[82] Rui Zhang, Yang Liu, and Hyeongdong Kim, “Effect of capacitor position on radiation patterns of ground radiation antenna,” Electronics Letters, Vol. 51, No. 23, pp. 1844–1846, Nov. 2015 (SCI)

[81] Longyue Qu, Rui Zhang, and Hyeongdong Kim, “High-sensitivity ground radiation antenna system using an adjacent slot for Bluetooth headsets,” IEEE Transactions on Antennas and Propagation, Vol. 63, No. 12, pp. 5903–5907, Sep. 2015 (SCI)

[80] Rui Zhang, Yang Liu, Hyunghoon Kim, and Hyeongdong Kim, "Design of a high-sensitivity ground radiation antenna for wireless headsets," Microwave and Optical Technology Letters, Vol. 57, No. 9, pp. 2104-2108, Sep. 2015 (SCIE)

[79] Rui Zhang, Yang Liu, Hyeonghun Kim, and Hyeongdong Kim, "PIFA using series-resonant feed structure for wide-band operations," Electronics Letters, Vol. 51, No. 8, pp. 606–608, Apr. 2015 (SCI)

[78] Hongkoo Lee, Jongin Ryu, and Hyeongdong Kim, "Ground Radiation Antenna for Wi-Fi service in USB," Microwave and Optical Technology Letters, Vol. 56, No. 6, pp. 1400-1403, Jun. 2015 (SCIE)

[77] Jaesuk Lee, Yang Liu, and Hyeongdong Kim, "Mobile antenna using multi-resonance feed structure for wideband operation," IEEE Transactions on Antennas and Propagation, Vol. 62, No. 11, pp. 5851-5855, 08 Aug. 2014 (SCI)

[76] Sungjin Moon, Hongkoo Lee and Hyeongdong Kim, "A wideband loop-type antenna," Microwave and Optical Technology Letters, Vol. 57, No. 7, pp. 1742–1744, Jul. 2015 (SCIE)

[75] Kyoungnam Park, Jaesuk Lee, Yang Liu and Hyeongdong Kim, "Antenna using feed structure for wide impedance bandwidth," Microwave and Optical Technology Letters, Vol. 56, No. 7, pp. 1645-1647, Jul. 2014 (SCIE)

[74] J. Cho, S.-G Ha, Y. B. Park, H. Kim, and K.-Y. Jung,“On the numerical stability of finite-difference time-domain for wave propagation in dispersive media using quadratic complex rational function,” Electromagnetics, Vol. 34, No. 8, pp. 625-632, Oct. 2014.

[73] Jaesuk Lee, and Hyeongdong Kim, "Miniaturized WLAN antenna in mobile handset with wide impedance bandwidth characteristic," Microwave and Optical Technology Letters, Vol. 55, No. 12, pp. 2841-2844, Dec. 2013 (SCIE)

[72] Jaesuk Lee, Yang Liu, Hyung-Hoon Kim, and Hyeongdong Kim, "PIFA with a dual resonance feed structure for enhancement of impedance bandwidth," IET Electronics Letters, Vol. 49, No. 15, pp. 921-922, 25 Jul. 2013 (SCI)

[71] Yang Liu, Hyung-Hoon Kim, and Hyeongdong Kim, "Loop-type ground radiation antenna for dual-band WLAN applications," IEEE Transactions on Antennas and Propagation, Vol. 61, No. 9, pp. 4819-4823, 11 Jun. 2013 (SCI)

[70] Jaekyu Yu, Rui Zhang, Yang Liu, Hyung-Hoon Kim, and Hyeongdong Kim, "Dual-Band Wlan Antenna Design by Controlling Higher Order Mode Characteristic," Microwave and Optical Technology Letters, Vol. 55, No. 8, Aug. 2013 (SCIE)

[69] Yang Liu, Jaeseok Lee, Sinhyung Jeon, Kyung-Young Jung, Hyunghoon Kim, and Hyeongdong Kim, "Miniaturization of Dual-Band PIFA for Wireless LAN Communication," ETRI Journal, Vol. 35, No. 3, Jun. 2013 (SCI)

[68] Jaesuk Lee, Yang Liu, and Hyeongdong Kim. "Miniaturized Dual-Band Antenna for Wireless Local Area Network," Microwave and Optical Technology Letters, Vol. 55, No. 4, Apr. 2013 (SCIE)

[67] Y. Liu, J. Lee, H.H. Kim, and H. Kim "Ground radiation method using slot with coupling capacitors," IET Electronics Letters, Vol. 49, No. 7, pp. 447-448, 23 Apr. 2013 (SCI)

[66] R. Zhang, Y. Liu, H.H. Kim, and H. Kim "Bandwidth enhancement of ground antenna using resonant feeding circuit," IET Electronics Letters, Vol. 49, No. 7, pp. 441-442, 23 Apr. 2013 (SCI)

[65] Sang-Gyu Ha, Jaehoon Cho, Jaehoon Choi, Hyeongdong Kim, and Kyung-Young Jung, "FDTD Dispersive Modeling of Human Tissues Based on Quadratic Complex Rational Function," IEEE Transactions on Antennas and Propagation, Vol. 61, No. 2, 09 Oct. 2013 (SCI)

[64] Saewon Oh, and Hyeongdong Kim. "Small Wi-Fi chip antenna using a backside ground capacitance," Microwave and Optical Technology Letters, Vol. 55, No. 3, pp. 580-582, Mar. 2013 (SCIE)

[63] Hyengcheul Choi, Kyung-Young Jung, Hyeongdong, Kim. "Miniaturized Antenna with High Radiation Efficiency Using Ground and Chip Capacitors," IEICE Transactions on Communications, Vol. 95, No.10, pp. 3328-3331, 01 Oct. 2012 (SCI)

[62] Sinhyung Jeon and Hyeongdong Kim,“Mobile terminal antenna using a planar inverted-E (PIE) feed structure for enhanced impedance bandwidth,” Microwave and Optical Technology Letters, Vol. 54, No. 9, pp. 2133-2139, Sep. 2012 (SCIE)

[61] S. Jeon, S. Oh, H.H. Kim and H. Kim, "Mobile handset antenna with double planar inverted-E (PIE) feed structure," Electronics Letters, Vol. 48, No. 11, pp. 612-614, 30 May. 2012. (SCI)

[60] Sinhyung Jeon, Yang Liu, Seahoon Ju and Hyeongdong Kim "PIFA with a parallel resonance feed structure for wide-band operation," IET Electronics Letters, Vol. 47, No. 23, pp.1263-1265, 18 Nov. 2011 (SCI)

[59] Yang Liu, Jaeseok Lee, Kyung-Young Jung, and Hyeongdong Kim "Dual-band PIFA using resonated loop feed structure," IET Electronics Letters, Vol. 48, No. 6, pp. 309-310, 19 Mar. 2012 (SCI)

[58] Joonchul Kim, and Hyeongdong Kim, "Analysis of Coupling Between Digital Signal on FPCB and Mobile Handset Antenna," Microwave and Optical Technology Letters, Vol. 53, No. 10, pp. 2318-2321, Oct. 2011 (SCIE)

[57] Y. Liu, X. Lu, H. Jang, H. Choi, K. Jung, and H. Kim, "Loop-type ground antenna using resonated loop feeding, intended for mobile devices," IET Electronics Letters, Vol. 47, No. 7, pp. 426-427, 05 Apr. 2011 (SCI)

[56] Yang Liu and Hyeongdong Kim, "Analysis of Ground Layout Effect in CMOS Concurrent Dual-band LNA," Microwave and Optical Technology Letters, Vol. 53, No.7, pp. 1674-1677, 2011 (SCIE)

[55] Joonchul Kim, Jaeseok Lee, Byungjae Nam and Hyeongdong Kim, "A Miniature CMOS VCO with Symmetric Trace Differential Stacked Spiral Inductor," Microwave and Optical Technology Letters, Vol. 53, Issue 7, pp. 1588-1591, 2011 (SCIE)

[54] Hyengcheul Choi, and Hyeongdong Kim, "Internal Wideband Loop Antenna Using an LC Resonator," IEICE Transaction on Communications, Vol. E94-B No.4 pp 1081-1084, 2011 (SCI)

[53] Hyengcheul Choi, Sinhyung Jeon, Junghwan Yeom, Oul Cho and Hyeongdong Kim, "Controlling Resonances for a Multi-wideband Antenna by Inserting Reactive Components," IEEE Transaction on Antennas and Propagation, Vol. 59, Issue 8, pp. 3040 - 3045, 2011 (SCI)

[52] Joonchul Kim, Byungjae Nam and Hyeongdong Kim, "A New Differential Stacked Spiral Inductor with Improved Self Resonance Frequency," Microwave and Optical Technology Letters, Vol. 53, Issue 5, pp. 1024-1026, 2011 (SCIE)

[51] Sinhyung Jeon and Hyeongdong Kim, "Critical coupling of the inverted-F antenna by increasing effective inductance," Microwave and Optical Technology Letters, Vol. 53, Issue 4, pp. 737-740, 2011 (SCIE)

[50] Joonchul Kim and Hyeongdong Kim, "Decoupling Method Between Digital Signals on FPCB and Mobile Handset Antenna," ETRI Journal, Vol. 33, No. 1, pp. 121-124, 2011 (SCI)

[49] Yang Liu, Jeongeo Lee, Sungju Choi and Hyeongdong Kim, "Full-wave Simulation Examining Layout Effect in CMOS RF Amplifier Design," Microwave and Optical Technology Letters, Vol. 52, Issue 12, pp. 2738-2470, 2010 (SCIE)

[48] Oul Cho, Hyengcheul Choi and Hyeongdong Kim, "Loop-type ground antenna using capacitor," IET Electronics Letters, Vol. 47, Issue 1, pp. 11-12, 2011 (SCI)

[47] Junghwan Yeom., Sinhyung Jeon, and Hyeongdong Kim. "Compact Hybrid DRA Combined with PIFA." IEICE Transactions on Communications 93.10 : 2781-2783, 2010 (SCI)

[46] Sinhyung Jeon, and Hyeongdong Kim. "Planar inverted-E (PIE) antenna for a wide impedance bandwidth." IEICE Transactions on Communications 93.11 : 3173-3175., 2010

[45] Kim K., S. Jeon, and Hyoengdong Kim. "Bandwidth improvement method using extended ground." Electronics Letters Vol. 46, No.17 : 1176-1177. ,2010

[44] Kim, J., and Hyeongdong Kim. "CMOS symmetric trace differential stacked spiral inductor." Electronics Letters Vol.46, No.14 : 1005-1006. , 2010

[43] Lee Sangho, Choi, Sanghyun, Jaeseok Lee, jihyun Park, and Hyeongdong Kim. et al. "CMOS multi-band wireless direct-conversion receiver for SDR." Microwave and Optical Technology Letters Vol.52, No.3 : 718-721., 2010

[42] Hojeong Kim, Sinhyung Jeon, Hyengcheul Choi, and Hyeongdong Kim., et al. "Critical coupling of a planar inverted F-antenna using a ferrite sheet." Microwave and Optical Technology Letters Vol.52, No.2 : 400-403., 2010

[41] Sinhyung jeon, Hyengcheul Choi, and Hyeongdong Kim. "Circular polarization dielectric resonator antenna excited by single loop feed." ETRI Journal 2009

[40] Hyengcheul Choi, Hyeongdong Kim, "DUAL-BAND CHIP ANTENNA DESIGN USING INTERCOUPLING CAPACITANCE" MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, Vol.51, No.6 : 1467 - 1470., 2009

[39] Sinhyung Jeon, Hyengcheul Choi, and Hyeongdong Kim. "Hybrid planar inverted-F antenna with a T-shaped slot on the ground plane." ETRI Journal 31.5 : 616-618., 2009

[38] Hyengcheul CHOI , Hyeongdong Kim. "Design of a Dual-Band Chip Antenna Using a Gap-Fed Branch." IEICE Transactions on Communications 92.8 : 2759-2761., 2009

[37] H. Choi, S. Jeon, S. Kim, Hyungdong Kim, et al. "Controlling resonance frequencies in antennas to achieve wideband operation." Electronics Letters 45.14 : 716-717.,2009

[36] Sangho Lee, Jaehyuk Lee, Jihyun Park, Hyeongdong Kim, "MULTIBAND (WiBro/WCDMA/CDMA 2000 1x) VOLTAGE-CONTROLLED OSCILLATOR FOR MOBILE COMMUNICATION" MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, Vol.51, 416-418, 2009

[35] Ying Liu, Shuxi Gong, Hyengcheul Choi, Hyeongdong KIM. "A Novel Low Profile Chip Antenna for GSM/DCS/PCS Mobile Phone," Journal of Electromagnetic Waves and Applications, 22.7, 933-940, 2008

[34] Sangho Lee, Hyeongdong Kim, "A 0.855 ~ 1.342 GHz octa-phase LC VCO for multimode direct conversion receiver in 0.18-um CMOS." Microwave and Optical Technology Letters, vol. 50, no.7, pp. 1717-1986, Jul 2008

[33] Seungheon Hyeon, Yusuk Yun, Hyeongdong Kim and Seungwon Choi, "Phase Diversity for an Antenna Array System with a Short Inter-Element Separation," IEEE Transactions on Vehicular Technology, vol. 57, no.1, pp. 206-214, Jan 2008

[32] Ying Liu, Antao Bu, Shuxi Gong, Hyeongcheul Choi, Dongsoo Shin and Hyeongdong Kim, "Realization of Gain Improvement Using Helix-Monopole Antenna for Two-Way Portable Radio," IEICE Transactions on Communications, vol. E90-B, no.12, pp. 3738-3741, Dec 2007

[31] Ying Liu, Antao Bu, Shuxi Gong and Hyeongdong Kim, "A novel internal antenna with high gain for wireless phone, "Microwave and Optical Technology Letters, vol. 49, no. 9, pp. 2055-2317, Sep 2007

[30] Saehoon Ju, Kyung-Hoon Lee, In-Ho Hwang, Hyung-Hoon Kim and Hyeongdong Kim, "Implementation of local boundary conditions in two ADI-FDTDupdating schemes," IEICE Transactions on Communications, vol. E90-B, no.5, pp. 1286-1289, May 2007

[29] Hyung-Hoon Kim, Saehoon Ju, Seungwon Choi, Jong-Il Park and Hyeongdong Kim, "An Efficient Time-Domain Electromagnetic Solution Using the Time-Domain Variable Resolution Concept," IEICE Transactions on Communications, vol. E89-B, no.12, pp. 3487-3490, DEC 2006

[28] Hyung-Hoon Kim, Saehoon Ju, Seungwon Choi, Jong-Il Park and Hyeongdong Kim, "Compact representation of Green function using discrete wavelet concept for fast field analysis," IEICE Transactions on Communications, vol. E89-B, no. 12, pp. 3491-3493, Dec 2006

[27] Saehoon Ju, Woonsik Yeo and Hyeongdong Kim, "An Efficient Analysis of Thin-Film Bulk Acoustic Wave Resonators Using FDTD Method with ADI Time-Marching Scheme," IEICE Transactions on Communications, vol. E88-B, no. 6, pp. 2681-2684, Jun 2006

[26] Jeongheum Lee, Yongbeum Lee and Hyeongdong Kim, "Decision of Error Tolerance in Array Elements by the Monte-Carlo Method," IEEE Transactions on Antennas and Propagation, vol. 53, no. 4, pp. 1325-1331, April 2005

[25] Jeongheum Lee, Jaeyong Jung, Jong-Il Park and Hyeongdong Kim, "Extraction of Material Parameters in Film Bulk Acoustic Resonator (FBAR) using Genetic Algorithm," IEEE Electron Device Letters, vol. 25, no. 2, pp. 67-69, Feb 2004

[24] Saehoon Ju, Kyung-Young Jung and Hyeongdong Kim, "Investigation on the characteristics of the envelope FDTD based on the alternating direction implicit scheme," IEEE Microwave and Wireless Components Letters, vol. 13, no. 9, pp. 414-416, Sep 2003

[23] Saehoon Ju, Hyeongdong Kim and Hyung-Hoon Kim, "A study of the numerical dispersion relation for the 2-D ADI-FDTD method," IEEE Microwave and Wireless Components Letters, vol. 13, no. 9, pp. 405-407, Sep 2003

[22] Jeongheum Lee and Hyeongdong Kim, "Thin-film bulk acoustic resonator RF bandpass filter design technique using genetic algorithm," Electronics Letters, vol. 39, no. 5, pp. 1-2, Mar 2003

[21] Sergei V. Zagriadski, Jaehoon Choi and Hyeongdong Kim, "Electrodynamic theory of multiport structures using magnetostatic waves in ferrite films and its applications," IEEE Transacations on Microwave Theory and Techiques, vol. 51, no. 3, pp. 744-751, Mar 2003

[20] Ki-wone Seo, Saehoon Ju and Hyeongdong Kim, "The modeling of thin-film bulk acoustic wave resonators using the finite-difference time-domain method," IEEE Electron Device Letters, vol. 23, no. 6, pp. 327-329, Jun 2002

[19] Heung-Jae Im, Seungwon Choi, Byungcho Choi, Hyeongdong Kim and Jaehoon Choi, "A survey of essential problems in the design of smart antenna system," Microwave and Optical Technology Letters, vol. 33, no. 1, pp. 31-34, Apr 2002

[18] Saehoon Ju, Youngboo Vin and Hyeongdong Kim, "Modal MRTD approaches for the efficient analysis of waveguide discontinuities," IEEE Microwave and Wireless Components Letters, vol. 11, no. 8, pp. 352-354, Aug 2001

[17] Jeongnam Cheon, Saehoon Ju, Hyeongdong Kim and Kwangcheol Ko, "Analysis of the power-plane resonance using the Haar-wavelet-based MRTD," Microwave and Optical Technology Letters, vol. 30, no. 1, pp. 6-9, Jul 2001

[16] Saehoon Ju, Duck-Ho Bae and Hyeongdong Kim, "A combined MRTD/FDTD approach to analyze local characteristics of lumped elements," Microwave and Optical Technology Letters, vol. 27, no. 3, pp. 190-192, Nov 2000

[15] Kyung-Young Jung, Saehoon Ju and Hyeongdong Kim, "A finite-difference time-domain approach to waveguide discontinuities using one-dimensional modal perfectly matched layer based on diagonally anisotropic material," International Journal of RF and Microwave Computer-Aided Engineering, vol. 10, no. 4, pp. 264-270, Jul 2000

[14] Sungtek Kahng, Jaehoon Choi and Hyeongdong Kim, "Efficient improvement in the spline-type divided difference interpolation technique for impedance matrix calculation," Microwave and Optical Technology Letters, vol. 23, no. 6, pp. 361-363, Dec 1999

[13] Kyung-Young Jung and Hyeongdong Kim, "An efficient formulation of 1-D modal PML for waveguide structures," Microwave and Optical Technology Letters, vol. 21, no. 1, pp. 48-51, Apr 1999

[12] Kyung-Young Jung, Hyeongdong Kim and Kwang-Cheol Ko, "A modified perfectly matched layer (PML)for waveguide problem," vol. 18, no. 5, pp. 360-362, Aug 1998

[11] Sungtek Kahng, Saehoon Ju and Hyeongdong Kim, "Continuous Wavelet Representation of Green Functions in Layered Media," Electronics Letters, vol. 34, no. 4, pp. 378-379, Feb 1998

[10] Kyung-Young Jung, Hyeongdong Kim and Kwang-Cheol Ko, "An improved unimodal absorbing boundarycondition for waveguide problems," IEEE Microwave and Guided Wave Letters, vol. 7, no. 11, pp. 368-370, Nov 1997

[9] Hyeongdong Kim, Hao Ling and Chankil Lee, "A fast moment method algorithm using spectral domain wavelet concepts," Radio Science, vol. 31, no. 5 pp. 1253-1261, Sep 1996

[8] Hyeongdong Kim and Hao Ling, "On the efficient representation of electrodynamic Green's function using multiresolution wavelet concepts," Microwave and Optical Technology Letters, vol. 9, no. 4, pp. 183-187, Jul 1995

[7] Hao Ling and Hyeongdong Kim, "On the application of Kirhoffs approximation to scattering from discontinuities in large wavegukde ducts," Microwave and Optical Technology Letters, vol. 7, no. 4, pp. 168-17172, Mar 1994

[6] Hyeongdong Kim and Hao Ling, "On the application of fast wavelet transform to the integral equation solution of electromagnetic scattering problems," Microwave and Optical Technology Letters, vol. 6, no. 3, pp. 168-173, Mar 1993

[5] Hyeongdong Kim and Hao Ling, "Wavelet analysis of radar echo from finite-size targets," IEEE Transactions on Antennas and Propagation, vol. 41, no. 2, pp. 200-207, Feb 1993

[4] Hyeongdong Kim and Hao Ling, "Electromagnetic scattering from an inhomogeneous object by ray tracing," IEEE Transactions on Antennas and Propagation, vol 40, no. 5, pp. 517-525, May 1992

[3] Hao Ling and Hyeongdong Kim, "Wavelet analysis of backscattering data from an open-ended waveguide cavity," IEEE Microwave and Guided Wave Letters, vol 2, no. 4, pp. 140-142, Apr 1992

[2] Hao Ling, Hyeongdong Kim, Gary A. Hallock, Bjorn W. Birkner and Afroz J. M. Zaman, "Effect of an arcjet plume on satellite reflector performance," IEEE Transactions on Antennas and Propagation, vol. 39, no. 9, pp. 1412-1420, Sep 1991

[1] Bjorn W. Birkner, Gary A. Hallock, Hyeongdong Kim and Hao Ling, "Arcjet plasma plume effect on a microwave reflector antenna," Review of Scientific Instruments, vol. 61, no. 10, pp. 2978-2980, Oct 1990