Publications

N. Ha*, M. M. Tentzeris, and S. Kim, "From Additive Manufacturing to 4D-Printed RF Systems: Origami- and Kirigami-Inspired Mechanically Reconfigurable RF Front Ends," Under Review.

H. Kim, G. Kim, N. Ha, J. Cho, K. Park, and S. Kim, "A Lightweight, Broadband, Additively Manufactured Dual-CP Waveguide Active Phased Array for Ku-Band SATCOM," Under Review.

H. Ryu, N. Ha, and S. Kim, "Transformer-Hypernetwork-Controlled Deep-Unfolded Phase-Aware Channel Estimation Refinement for Phase-Drift-Robust Backscatter Links," Under Review.

E. Park, N. Ha, S. Kim, H.-C. Bae, J.-Y. Kwon, S. Kim, "1×8 Dipole Array Antenna with a Compact Waveguide-to-Microstrip Transition for Sub-THz Characterization," J. Electromagn. Eng. Sci., Under Review.

S. H. Kim*, N. Ha*, J. Kim, S. Kwon, H. Lee, B. Park, and S. Kim, "A Ferrite-Based Metasurface for Interference Mitigation and Ghost Target Suppression in W-Band Automotive Radar and Vehicular IoT Networks," Under Review.

E. Park*, N. Ha*, G. Kim, H. Jeong and S. Kim,"Dual-Polarized Reconfigurable Reflectarray Fed by a Bull’s Eye Aperture Antenna With Continuous Reflection-Type Phase Shifter," IEEE Trans. Antennas Propag., Accepted, Sep. 2026.

N. Ha*, H. Ryu, H. Jeong, H. Kim, G. Kim, A. Georgiadis, M. M. Tentzeris, and S. Kim, "Integrated Sensing and Backscatter Communication (ISABC): Toward Self-Sustainable Autonomous IoT Networks," IEEE Microw. Mag., Accepted, Jul. 2026.

N. Ha*, H. Lim, M. Jang, G. Kim, H. Kim, B. Park, M. M. Tentzeris, and S. Kim, "Multi-Functional Metasurfaces with M-Type Ferrites: Shaping the Future of mmWave Absorption and Beam Steering," IEEE Internet Things J., vol. 13, no. 16, pp., Aug.36482-36505, 2026.

S. H. Kim, N. Ha, S. Kwon, B. Park and S. Kim, "Design of a Magnetic Composite-Based Ultrawideband Absorber Using a Reactance Compensation Strategy for Ku-/Ka-Band Applications," Adv. Mater. Sci. Eng., vol. 2025, 8881902, Sep. 2025.

S. An, J. E. Byun, Y. Kang, J.-W. Jeong, N. Ha, S. H. Kim, S.- S. Yang, S. Kim, J. W. Lee, Y.-T. Kwon, "Glass-confined, ultrafine nanocrystalline core/shell microwires with enhanced giant magneto-impedance performances," J. Alloys Compd., vol.1038, no.182624, Aug. 2025.

G. Kim, H. Kim, N. Ha, J. Cho, K. Park, and S. Kim, "Theoretical Analysis and Design of Metasurface Antennas for Wide Beamwidth and Dual-Circularly-Polarized High Gain," IEEE Trans. Antenna Propag., vol.73, no.8, pp.5154-5165, Aug. 2025.

N. Ha*, H. Kim, G. Kim and S. Kim, "A 3D-Printed Dual-Band Waveguide-Fed Hexagonal Cavity Slot Array for mmWave Applications," IEEE Trans. Antennas Propag., vol.73, no.8, pp.5545-5467, Aug. 2025.

N. Ha*, G. Kim, H.-C. Bae and S. Kim, "Compact Dual-Band, Dual-Circular Polarized Microstrip Antenna Array for K/Ka-Band Application," IEEE Open J. Antennas Propag., vol.6, no.2, pp.372-382, Apr. 2025.

A. Parameswaran, N. Ha, S. Kim, S. Kwon, B. Park, and S. Kim, "Design and Analysis of an Ultra-Wideband Multi-Pyramidal Magnetic Absorber Using an Equivalent Circuit Model," IEEE Open J. Antennas Propag., vol.6, no.1, pp.88-97, Feb. 2025.

H. Jeong, N. Ha, A. Georgiadis, M. M. Tentzeris, and S. Kim, "Polarization Diversity and Transfer Learning Based Modulation Optimization for High-Speed Dual Channel MIMO Backscatter Communication," IEEE Internet Things J., vol.11, no.23, pp.21857-21871, Jun. 2024.

N. Ha*, G. Kim, H. Kim, S. Kwon, B. Park, and S. Kim, "Design and Analysis of Ultra-Wideband Multi-layered Electromagnetic Absorber using Carbonyl Iron Magnetic Substrate and Planar Periodic Conductive Structure for mmWave Applications," IEEE Trans. Antennas Propag., vol.72, no.2, pp.1648-1660, Feb. 2024.

N. Ha*, G. Kim, S. J. Kwon, S. H. Ryu, B. Park, and S. Kim, "A Hole-Patterned Carbonyl Iron Powder/Epoxy Composite Millimeter-Wave Electromagnetic Absorber Operating at the Ka-Band," IEEE Trans. Electromagn. Compat., vol.65, no.4, pp.997-1007, Aug. 2023.

N. Ha*, G. Kim, N. Jeong, and S. Kim, "Design of mmWave Foldable Vertically Stacked Yagi-Uda Antenna Inspired by Origami and Kirigami Theory," IEEE Antennas Wirel. Propag. Lett., vol.21, no.21, pp.1634-1638, May 2022.

N. Ha*, "Numerical Analysis of Fast Phase Calibration for Large-scale Phased Array Antenna," to be prepared.

J. Kim*, N. Ha*, and S. Kim, "Multi-Functional Metasurfaces with W-Type Ferrites: Magnetic Backscatter and Passive Reflector," to be prepared.

J. Kim*, N. Ha*, and S. Kim, "Multi-Functional Metasurfaces with W-Type Ferrites: Multi-beam Reflectarray, Transmission, and Absorption for Satellite Applications," to be prepared.

E. Park*, N. Ha*, and S. Kim, "LTCC-based Miniaturized Metasurface Antenna Array for 6G Application within Upper Mid-band," to be prepared.

E. Park*, N. Ha*, and S. Kim, "LTCC-based Tightly Coupled Dipole Antenna (TCDA) Array for 6G Application within Upper Mid-band," to be prepared.

S. Ohm, M. Jeon, and N. Ha† "Analysis of Total Radiated Power with Antenna Switching Diversity for 5G NR FR1 User Terminals," J. Korea Inst. Inf. Commun. Eng., Acceted, Set. 2026.

S. Kim, N. Ha, and S. Kim, "Design of a 24 GHz Band Rasorber with High Frequency Selectivity and Broadband Absorption Performance," J. Korean Inst. Electromagn. Eng. Sci., vol.36, no.4, pp.362-373, Apr. 2025.

J. Jo, N. Ha, and S. Kim, "Design of a High-gain Patch Antenna Integrated with a 3D Printed Inverted Pyramidal GRIN Lens for mmWave Communications," J. Korean Inst. Electromagn. Eng. Sci., vol.35, no.4, Apr. 2024.

(국내출원: P2026-0116361, HSC) 능동위상 대배열 안테나 고속 보정 알고리즘

(국내출원: P2025-0090751, HSC) 이중 원형 편파 안테나 장치

(국내등록, P2026-0057885, HSC) 안테나 소자, 안테나 모듈 및 안테나 장치

(국내출원, PNU) 전자기파 흡수/방사 성능 동시구현을 위한 방법 및 제조: 흡반사체

(국제출원: 미국, PNU) Electromagnetic wave absorber, method of manufacturing electromagnetic wave absorber, and method of designing electromagnetic wave absorber

(국내출원: 10-2025-0058351, PNU) 전자기파 흡수체, 전자기파 흡수체 제조 방법 및 전자기파 흡수체 설계 방법, May. 2025.

(국내등록: 10-2787598, PNU) 고분자 자성 복합소재 및 이의 제조방법, Mar. 2025.