Publications

 

2022

[J27] A. Mitra, K. Xu, K. Payne, J. H. Choi, and J-B. Lee, Fabrication of a multilayer X-band band-pass metasurface using liquid metal, IEEE Electron Device Lett., accepted for publication.
[J26] A. Mitra, K. Xu, S. Babu, J. H. Choi, and J-B. Lee, Liquid-metal-enabled flexible metasurface with self-healing characteristics, Advanced Material Interfaces., vol. 9, no. 12, pp. 2102141Dec. 2021.
[C51] J. Furgal, J. H. Choi, and J. Lee, Bandwidth enhanced equal-split planar Knochel-Mayer power divider capable of high power handling for antenna feed applications, in IEEE Antennas Propag. Soc. Int. Symp. (APSURSI), Jul. 2022.
[C50] K. Xu, Z. Li, and J. Choi, A flexible liquid-metal-tuned absorber, in IEEE Antennas Propag. Soc. Int. Symp. (APSURSI), Jul. 2022.
[C49] N. Chordas-Ewell, Z. Li, J. H. Choi, D. Ren, and R. Wu, A W-band rectifier design based on GCPW, in IEEE MTT-S Int. Microw. Symp. Dig., Jun. 2022.

2021

[J25] K. Payne, K. Xu, J. H. Choi, and J. K. Lee, Mutiphysics analysis of plasma-based tunable absorber for high power microwave applications, IEEE Trans. Antennas Propag., accepted for publication.
[C48] K. Xu and J. Choi, Liquid-Metal-Tuned Patch Element for Flexible and Reconfigurable Reflectarrays/Intelligent Surfaces, in IEEE Antennas Propag. Soc. Int. Symp. (APSURSI), Dec. 2021.
[C47] J. Furgal, H. Lee, J. Choi, and J. Lee, Multi-Band Array Using a Multiplexed Antenna Feed Composed of CRLH Transmission Line-Based Dual Band Isolation Circuits, in IEEE Antennas Propag. Soc. Int. Symp. (APSURSI), Dec. 2021.
[C46] K. Xu, N. Chordas-Ewell, Z. Li, and J. H. Choi, Frequency scanning reflectarray based on composite right/left-handed transmission lines, in IEEE MTT-S Int. Microw. Symp. Dig., Jun. 2021.
[C45] Z. Li, N. Chordas-Ewell, J. H. Choi, D. Ren, R. Wu, Z. Qamar, N. Aboserwal, and J. L. Salazar-Cerreno, Stripline-based W-band frequency scanning composite right/left-handed leaky-wave antenna with a tapered aperture for narrow bandwidth, in IEEE MTT-S Int. Microw. Symp. Dig., Jun. 2021.
[C44] A. Mitra, K. Xu, N. S. Babu, J. H. Choi, and J-B, Bong, Liquid metal-based flexible band-stop frequency selective surface, in IEEE 34th International Conference on Micro Electro Mechanical Systems (MEMS)., Jan. 2021.
[C43] Z. Li, K. Xu, N. Chordas-Ewell, D. Ren, J. H. Choi, and R. Wu, Via-less waveguide-to-stripline transition using 2D electromagnetic bandgap structure, in European Microwave Conference., Jan. 2021.
[C42] J. Furgal, K. Xu, J. H. Choi, and J. K. Lee, Broadband equal-split planar 4-way power divider/combiner suitable for high power applications, in European Microwave Conference., Jan. 2021.
[C41] N. Chordas-Ewell, K. Xu, R. Kadlimatti, A. T. Fam, and J. H. Choi, Vibrating antenna Doppler radar, in European Microwave Conference., Jan. 2021.

2020

[J24] Y. Dong, Z. Wang, Y. Pan, and J. H. Choi, Characterization of shorted dipole antennas for low cost RFID reader applications, IEEE Trans. Antennas Propag., vol. 68, no. 11, pp. 7297–7308, Nov. 2020.
[J23] Z. Li, S. Scheers, L. An, A. Chivate, S. Khuje, K. Xu, Y. Hu, Y. Huang, S. Chang, K. Olenick, J. Olenick, J. H. Choi, C. Zhou, and S. Ren, All-printed conformal high-temperature electronics on flexible ceramics, ACS Applied Electronic Materials., vol. 2, no. 2, pp. 556-562, Jan. 2020.
[C40] K. Xu and J. H. Choi, Flexible liquid-metal-tuned higher-order bandpass frequency selective surfaces, in IEEE Asia Pacific Microwave Conference., Dec. 2020.
[C39] K. Xu, J. H. Choi, K. Payne, J. Lee, and J-B Lee, Flexible liquid metal frequency selective surface with tunable second-order bandpass response, in IEEE Antennas Propag. Soc. Int. Symp. (APSURSI), Jul. 2020.
[C38] D. Ren, Z. Li, J. H. Choi, and R. Wu, 1D & 2D W-band frequency scanning metamaterial antenna and array, in IEEE Antennas Propag. Soc. Int. Symp. (APSURSI), Jul. 2020.
[C37] H. Lee, D. Jung, D. Ren, and J. H. Choi, Frequency-tunable dual-band and polarization-flexible CRLH SIW resonant antenna, in IEEE Antennas Propag. Soc. Int. Symp. (APSURSI), Jul. 2020.

2019

[J22] A. Soleimani, A. Jafargholi, A. Jafargholi, J. H. Choi, and M. Veysi, Microstrip patch back radiation using metamaterial superstrate, IET Microw. Antenna Propag., vol. 14, no. 2, pp. 158-164, Oct. 2019.
[J21] H. Lobato-Morales, J. H. Choi, H. Lee, and J. Medina-Monroy, Compact dielectric-permittivity sensors of liquid samples based on substrate-integrated-waveguide with negative-order-resonance, IEEE Sensors J., vol. 19, no. 19, pp. 8694-8699, Jun. 2019.
[J20] K. Payne, K. Xu, J. H. Choi, and J. K. Lee, Electrically tunable microwave absorber based on discrete plasma-shells, IEEE Trans. Antennas Propag., IEEE Trans. Antennas Propag., vol. 67, no. 10, pp. 6523-6531, Jul. 2019.
[J19] A. Jafargholi, A. Jafargholi, and J. H. Choi, Mutual coupling reduction in an array of patch antennas using capacitively loaded loop metamaterial superstrate for MIMO applications, IEEE Trans. Antennas Propag., vol. 67, no. 1, pp. 179-189, Jan. 2019.
[C36] K. Payne, J. K. Lee, K. Xu, and J. H. Choi, Higher order plasma-based tunable absorber using magneto-dielectric substrates, in IEEE Antennas Propag. Soc. Int. Symp. (APSURSI), Jul. 2019.
[C35] K. Xu, N. Chordas-Ewell, and J. H. Choi, Planar vertically polarized quasi-yagi antennas using magnetic current loops, in IEEE Antennas Propag. Soc. Int. Symp. (APSURSI), Jul. 2019.
[C34] K. Xu, D. Koshen, M. Abdirash, and J. H. Choi, A retrodirective microwave barcode, in IEEE MTT-S Int. Microw. Symp. Dig., Jun. 2019.
[C33] D. Ren and J. H. Choi, Full-sphere frequency scanning array antenna based on passive dual-band CRLH series integrated feeding network, in IEEE MTT-S Int. Microw. Symp. Dig., Jun. 2019.

2018

[J18] M. Enders, J. H. Choi, and J. K. Lee, Integrated full hemisphere space-to-frequency mapping antenna with CRLH stripline feed network, IEEE Trans. Microw. Theory Tech., vol. 66, no. 11, pp. 4765-4772, Nov. 2018.
[J17] K. Payne, K. Xu, and J. H. Choi, Generalized synthesized technique for the design of thickness customizable high-order bandpass frequency selective surface, IEEE Trans. Microw. Theory Tech., vol. 66, no. 11, pp. 4783-4793, Nov. 2018.
[J16] H. Lee, D. Ren, and J. H. Choi, Dual-band and polarization-flexible CRLH substrate integrated waveguide resonant antenna, IEEE Antennas Wireless Propag. Lett., vol. 17, no. 8, pp. 1469-1472, Aug. 2018.
[J15] K. Sun, S. Han, J. H. Choi, and J. K. Lee, Miniaturized active metamaterial resonant antenna with improved radiation performances based on negative-resistance-enhanced CRLH transmission lines, IEEE Antennas Wireless Propag. Lett., vol. 17, no. 7, pp. 1162-1165, May. 2018.
[J14] H. Lee, D. Jung, D. Ren, and J. H. Choi, L-section matching with notches and its application for composite low pass filter with spurious signal suppression, Electron. Lett., vol. 54, no. 10, pp. 636-638, May. 2018.
[J13] K. Payne, K. Xu, J. H. Choi, and J. K. Lee, Plasma enabled adaptive absorber for high power microwave applications, IEEE Trans. Plasma Sci., vol. 46, no. 4, pp. 934-942, Apr. 2018. (Selected as Highlight Paper).
[J12] J. H. Choi, Prof. Itoh's contributions to antennas, IEEE Micro. Mag., vol. 19, no. 2, pp. 92-93, Mar. 2018.
[J11] Y. Dong, J. Choi, and T. Itoh, Vivaldi antenna with pattern diversity for 0.7 to 2.7 GHz cellular band applications, IEEE Antennas Wireless Propag. Lett., vol. 17, no. 2, pp. 247-250, Feb. 2018.
[C32] K. Payne, J. K. Lee, K. Xu, and J. Choi, Compact third-order bandpass frequency selective surface with wide spurious-suppression bandwidth, in IEEE Antennas Propag. Soc. Int. Symp. (APSURSI), Jul. 2018.
[C31] K. Payne, J. K. Lee, K. Xu, and J. Choi, Low-profile plasma-based tunable absorber, in IEEE Antennas Propag. Soc. Int. Symp. (APSURSI), Jul. 2018.
[C30] D. Ren, K. Xu, and J. Choi, Tunable leaky wave antenna based on bidirectional amplifier enhanced composite right/left handed transmission line, in IEEE MTT-S Int. Microw. Symp. Dig., Jun. 2018.

2017

[J10] D. Ren, J. H. Choi, and T. Itoh, Series feed networks for dual-polarized frequency scanning phased array antenna based on composite right/left handed transmission line, IEEE Trans. Microw. Theory Tech., vol. 65, no. 12, pp. 5133-5143, Dec. 2017.
[J9] J. M. Kovitz, J. Choi, and Y. Rahmat-Samii, Supporting wide-band circular polarization: CRLH networks for high-performance CP antenna arrays, IEEE Micro. Mag., vol. 18, no. 5, pp. 91-104, Jun., 2017.
[C29] K. Payne, J. Choi, E. Peters, D. Wedding, and C. Wedding, Plasma-tunable electronic protection for high-power microwave applications, in IEEE Antennas Propag. Soc. Int. Symp. (APSURSI), Jul. 2017.
[C28] K. Payne, J. Choi, and T. Jang, Ultra-low profile tri-polarized antenna for WLAN/MIMO application in IEEE Antennas Propag. Soc. Int. Symp. (APSURSI), Jul. 2017.
[C27] T. Jang, K. Payne, and J. Choi, Half-mode hexagonal substrate integrated waveguide (SIW) structure and its application, in IEEE MTT-S Int. Microw. Symp. Dig., Jun. 2017.
[C26] D. Ren, J. Choi, and T. Itoh, Dual-polarized frequency-scanning phased-array antenna based on composite right/left handed serial feed network, in IEEE MTT-S Int. Microw. Symp. Dig., Jun. 2017.
[C25] D. Ren, J. Choi, and T. Itoh, Dual-polarized directivity enhanced active metamaterial antenna for polarimetric radar applications, in IEEE Int. Conf. on Micro. for Intelligent Mobility, Mar. 2017.

2016

[B2] J. H. Choi and T. Itoh, Beam-scanning leaky-wave antennas, in Handbook of Antenna Technologies edited by Zhi Ning Chen, Springer Science and Business Media, Oct. 2016.
[J8] Y. Dong, J. Choi, and T. Itoh, Folded strip/slot antenna with extended bandwidth for WLAN application, IEEE Antennas Wireless Propag. Lett., vol. 16, no. 10, pp. 673-676, Aug., 2016.
[C24] K. Payne and J. Choi, Development of dual-band/dual-polarized metamaterial antenna in an electrically-small form factor for efficient wireless data and power transfer, IEEE Conf. on Ant. Meas. and App., Oct. 2016.
[C23] D. Ren and J. Choi, Compact substrate integrated waveguide based active and passive circularly polarized composite right/left-handed leaky wave antennas, IEEE Conf. on Ant. Meas. and App., Oct. 2016.
[C22] K. Payne, E.F. Peter, D.K. Wedding, J. Brunett, and J. Choi, Second-order plasma enabled tunable low-profile freqeuncy selective surface based on coupling inter-layer, in Eur. Microwave. Conf., London, UK, Oct. 2016.
[C21] M. Enders and J. Choi, 3D space-to-microwave frequency mapping antenna, in IEEE Antennas Propag. Soc. Int. Symp. (APSURSI), Jun. 2016.
[C20] K. Payne and J. Choi, Third-order frequency selective surface based on inverter interlayers, in IEEE Antennas Propag. Soc. Int. Symp. (APSURSI), Jun. 2016.
[C19] K. Sun, J. Choi, and J. Lee, Miniaturized quasi-yagi antenna based on metaedge reflector, in IEEE Antennas Propag. Soc. Int. Symp. (APSURSI), Jun. 2016.
[C18] K. Payne, J. Choi, M. Ali, and C. M. Wu, Highly-selective miniaturized first-order low-profile dual-band frequency selective surface, in IEEE Antennas Propag. Soc. Int. Symp. (APSURSI), Jun. 2016.
[C17] K. Sun, J. Choi, and J. Lee, High directivity negative-resistance composite right/left-handed leaky-wave antenna, in IEEE MTT-S Int. Microw. Symp. Dig., May. 2016.
[C16] M. Enders, and J. Choi, A series feed network based on a distributed CRLH stripline for frequency scanning applications, in IEEE MTT-S Int. Microw. Symp. Dig., May. 2016.
[C15] D. Ren, H. Lee, and J. Choi, Bi-directional active and passive meandered circular polarized CRLH-inspired leaky-wave antenna based on substrate integrated waveguide, in IEEE MTT-S Int. Microw. Symp. Dig., May. 2016.
[C14] K. Payne, E.F. Peter, J. Brunett, D.K. Wedding, C.A. Wedding, and J. Choi, Novel electromagnetic radiation protection systems using contained plasma, The 15th Department of Defense Electro-Magnetic Windows Symp., May. 2016.

2015

[J7] H. Lee, J. H. Choi, C. M. Wu, and T. Itoh, A compact single radiator CRLH-inspired circularly polarized leaky-wave antenna based on substrate integrated waveguide, IEEE Trans. Antenna Propag., vol. 63, no. 10, pp. 4566-4572, Jul., 2015.
[C13] H. Lee, J. H. Choi, and T. Itoh, Active diplexer based on isolation circuits imbedded low noise amplifiers, in Eur. Microwave. Conf., Paris, France, pp. 462-465, Sep., 2015.
[C12] J. M. Kovitz, J. Choi, and Y. Rahmat-Samii, Dispersion engineering right/left-handed transmission lines enabling near-octave bandwidths for wideband CP patch antennas, in IEEE Antennas Propag. Soc. Int. Symp. (APSURSI), Vancouver, Canada, pp. 2525-2526, Jul., 2015 (Student Paper Competition Finalist - 2nd place award).

Before 2015

[B1] J. Choi, S. Breugnot, and T. Itoh, Microwave interferometer for non-destructive testing, in Review of Quantitative Nondestructive Evaluation (ed. D. O. Thompson and D. E. Chimenti), pp. 2092-2099, vol. 29, American Institute of Physics, 2010.
[J6] J. H. Choi, P. W. C. Hon, and T. Itoh, Dispersion analysis and design of planar electromagnetic bandgap ground plane for broadband common-mode suppression, IEEE Microw. Wireless Compon. Lett., vol. 24, no. 11, pp. 772-774, Nov. 2014.
[J5] C. M. Wu, J. H. Choi, H. Lee, and T. Itoh, Magnetic-current-loop induced electric dipole antenna based on substrate integrated waveguide cavity, IEEE Antennas Wireless Propag. Lett., vol. 13, pp. 519-522, Mar. 2014.
[J4] J. H. Choi, Y. Dong, J. S. Sun, and T. Itoh, Retrodirective array immune to incident waves with arbitrary polarization, IEEE Trans. Antennas Propag., vol. 61, no. 12, pp. 6006-6013, Dec. 2013.
[J3] J. H. Choi, J. S. Sun, and T. Itoh, Frequency-scanning phased-array feed network based on composite right/left-handed transmission lines, IEEE Trans. Microw. Theory Tech., vol. 61, no. 8, pp. 3148-3157, Aug. 2013.
[J2] J. S. Sun, H. Lobato-Morales, J. H. Choi, A. Corona-Chavez, and T. Itoh, Multistage directional filter based on band-reject filter with isolation improvement using composite right-/left-handed transmission lines, IEEE Trans. Microw. Theory Tech., vol. 60, no. 12, pp. 3950-3958, Dec. 2012.
[J1] J. Choi and T. Itoh, Dual-band composite right/left-handed (CRLH) phased-array antenna, IEEE Antennas Wireless Propag. Lett., vol. 11, pp. 732-735, 2012.
[C11] J. H. Choi, C. M. Wu, H. Lee, and T. Itoh, Vialess composite right/left-handed stripline and its applications for broadband 3-dB and tunable couplers, in Eur. Microwave. Conf., Oct., 2014.
[C10] H. Lee, J. H. Choi, Y. Kasahara, and T. Itoh, A circularly polarized single radiator leaky-wave antenna based on CRLH-inspired substrate integrated waveguide, in IEEE MTT-S Int. Microw. Symp. Dig., Jun., 2014. (Student Paper Competition Finalist).
[C9] M. Duran-Sindreu, J. Choi, J. Bonache, F. Martin, and T. Itoh, Dual-band leaky wave antenna with filtering capability based on extended-composite right/left-handed transmission lines, in IEEE MTT-S Int. Microw. Symp. Dig., Jun. 2013.
[C8] J. S. Sun, A. Corona-Chavez, J. Choi, and T. Itoh, Compact 4-pole BRF-based directional filter with even-mode matching circuits for sharp cut-off, in IEEE MTT-S Int. Microw. Symp. Dig., Jun. 2013.
[C7] J. Choi, J. S. Sun, and T. Itoh, An alternative technique in designing a low-profile two-pole bandpass frequency selective surface (FSS) using aperture coupling interlayer, in IEEE MTT-S Int. Microw. Symp. Dig., Jun. 2013.
[C6] C. M. Wu, J. Choi, S. Kawasaki, and T. Itoh, A novel miniaturized polarization orthogonalizing active retrodirective antenna array for satellite use, in IEEE MTT-S Int. Microw. Symp. Dig., Jun. 2013.
[C5] J. Choi, Y. Dong, and T. Itoh, Composite right/left-handed (CRLH) phased-array feed network for frequency scanning antenna, in Eur. Microwave. Conf., Amsterdam, Netherlands, pp. 755-758, Oct. 2012.
[C4] J. Choi, Y. Dong, J. Sun, and T. Itoh, Polarization friendly retrodirective antenna array, in IEEE MTT-S Int. Microw. Symp. Dig., Jun. 2012. (Student Paper Competition Finalist - Honorable Mention Award).
[C3] J. Choi, G. Youssef, S. Breugnot, V. Gupta, and T. Itoh, Microwave interferometer for shock wave induced displacement measurement, in Review of Progress in QNDE, AIP Conference Proceeding Vol. 1335, pp. 1722-1726, San Diego, CA, 2011.
[C2] J. Choi, S. Breugnot, and T. Itoh, Microwave interferometer for non-destructive testing, in Review of Progress in QNDE, AIP Conference Proceeding Vol. 29, pp. 2096-2103, Melville, NY, 2010.
[C1] J. Choi and T. Itoh, 60-GHz leaky-wave antenna on polyimide substrate, 8th MINT Int. Millimeter-Wave Symp. Seoul, Korea, 2007.