Journal papers

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  1. T. Tomura, J. Hirokawa, M. Ali, and G. Carpintero, “Millimeter-wave multiplexed wideband wireless link using rectangular-coordinate orthogonal multiplexing (ROM) antennas,” J. Lightw. Technol., pp. 1--1, Dec. 2021. [ DOI ]
  2. A. Hirata, K. Itakura, T. Higashimoto, Y. Uemura, T. Nagatsuma, T. Tomura, J. Hirokawa, N. Sekine, I. Watanabe, and A. Kasamatsu, “Transmission characteristics control of 120 GHz-band bandstop filter by coupling alignment-free lattice pattern,” IEICE Trans. Electron., vol. E104-C, no. 10, pp. 1745--1353, Oct. 2021. [ DOI ]
  3. S. Sakurai, J. G. N. Rahmeier, T. Tomura, J. Hirokawa, and S. Gupta, “Millimeter-wave Huygens' transmit-arrays based on coupled metallic resonators,” IEEE Trans. Antennas Propag., vol. 69, no. 5, pp. 2686--2696, May 2021. [ DOI ]
  4. K. Omoto, T. Tomura, and H. Sakamoto, “Proof-of-concept on misalignment compensation for 5.8-GHz-band reflectarray antennas by varactor diodes,” IEEE Access, vol. 9, pp. 54101--54108, Apr. 2021. [ DOI ]
  5. N. J. G. Fonseca, S. Gomanne, P. Castillo-Tapia, O. Quevedo-Teruel, T. Tomura, and J. Hirokawa, “Connecting networks for two-dimensional butler matrices generating a triangular lattice of beams,” IEEE J. Microw., vol. 1, no. 2, pp. 646--658, Apr. 2021. [ DOI ]
  6. K. Itakura, A. Hirata, M. Sonoda, T. Higashimoto, T. Nagatsuma, T. Tomura, J. Hirokawa, N. Sekine, I. Watanabe, and A. Kasamatsu, “Control of 120-GHz-band split ring resonator filter by coupling lattice pattern substrate,” IEICE Trans. Electron., vol. E104-C, no. 3, pp. 102--111, Mar. 2021. [ DOI ]
  7. K. Jitosho, T. Tomura, and J. Hirokawa, “Improvement of isolation between transmitting and receiving antennas of e-plane arranged waveguide slot arrays by using layers of slit pairs with half-wavelength spacing,” IEICE Commun. Express, vol. 10, no. 2, pp. 93--98, Feb. 2021. [ DOI ]
  8. T. Tomura, J. Hirokawa, M. Furukawa, T. Fujiwara, and N. Shinohara, “Eight-port feed radial line slot antenna for wireless power transmission,” IEEE Open J. Antennas Propag., vol. 2, pp. 170--180, Feb. 2021. [ DOI ]
  9. T. Tomura and J. Hirokawa, “Anisotropic conductivity measurements by two kinds of multimode rectangular plate-laminated cavities,” IEEE Trans. Microw. Theory Techn., pp. 1--1, 2021. [ DOI ]
  10. M. K. Emara, T. Tomura, J. Hirokawa, and S. Gupta, “All-dielectric Fabry-Perot based compound Huygens' structure for millimeter-wave beam-forming,” IEEE Trans. Antennas Propag., pp. 1--1, 2021. [ DOI ]
  11. M. K. Emara, T. Tomura, J. Hirokawa, and S. Gupta, “Fabry-Perot based compound all-dielectric Huygens' structure for circularly-polarized millimeter-wave beamforming,” IEEE Antennas Wireless Propag. Lett., vol. 19, no. 10, pp. 1784--1788, Oct. 2020. [ DOI ]
  12. T. Ruckkwaen, T. Tomura, K. Araki, J. Hirokawa, and M. Ando, “Experimental evaluation of intersymbol interference in non -far region transmission using a large array antenna in the millimeter wave band,” IEICE Trans. Commun., vol. E103-B, no. 10, pp. 1136--1146, Oct. 2020. [ DOI ] [PDF]
  13. K. Wada, T. Tomura, and J. Hirokawa, “Dual-polarized two-dimensional beam mode orthogonal multiplexing antenna system for the non-far region,” IEEE Trans. Antennas Propag., vol. 68, no. 9, pp. 6614--6623, Sep. 2020. [ DOI ]
  14. M. K. Emara, S. K. Stuhec-Leonard, T. Tomura, J. Hirokawa, and S. Gupta, “Laser-drilled all-dielectric Huygens’transmit-arrays as 120 GHz band beamformers,” IEEE Access, vol. 8, pp. 153815--153825, Sep. 2020. [ DOI ]
  15. H. Arakawa, T. Tomura, and J. Hirokawa, “Sidelobe suppression in both the e and h planes using slit layers over a corporate-feed waveguide slot array antenna consisting of 2×2-element radiating units,” IEICE Trans. Commun., vol. E103-B, no. 9, pp. 960--968, Sep. 2020. [ DOI ] [PDF]
  16. K. Ikeya, H. Sakamoto, H. Nakanishi, H. Furuya, T. Tomura, R. Ide, R. Iijima, Y. Iwasaki, K. Ohno, K. Omoto, T. Furuya, T. Hayashi, M. Kato, S. Koide, M. Kurosaki, Y. Nakatsuka, S. Okuyama, R. Kashiyama, J. Nakamura, W. Nio, T. Tsunemitsu, Y. Yamazaki, K. Taga, B. Hohmann, T. Amamoto, T. Chubachi, S. Tamura, H. Okada, A. Watanabe, N. Kawabata, T. Hori, H. Ito, T. Kuratomi, Y. Shimoda, N. Hidaka, K. Watanabe, A. Torisaka, and M. Yamazaki, “Significance of 3U CubeSat OrigamiSat-1 for space demonstration of multifunctional deployable membrane,” Acta Astronautica, vol. 173, pp. 363--377, Aug. 2020. [ DOI ]
  17. B. Pyne, H. Saito, P. R. Akbar, J. Hirokawa, T. Tomura, and K. Tanaka, “Development and performance evaluation of small SAR system for 100kg class satellite,” IEEE J. Sel. Topics Appl. Earth Observ., vol. 13, pp. 3879--3891, Jul. 2020. [ DOI ]
  18. A. Gomez-Torrent, T. Tomura, W. Kuramoto, J. Hirokawa, I. Watanabe, A. Kasamatsu, and J. Oberhammer, “A 38 dB gain, low-loss, flat array antenna for 320–400 GHz enabled by silicon-on-insulator micromachining,” IEEE Trans. Antennas Propag., vol. 68, no. 6, pp. 4450--4458, Jun. 2020. [ DOI ]
  19. T. Tomura, Y. Saito, and J. Hirokawa, “8×2-element 60-GHz-band circularly polarized post-wall waveguide slot array antenna loaded with dipoles,” IEEE Access, vol. 8, pp. 85950--85957, May 2020. [ DOI ]
  20. R. Ohashi, T. Tomura, and J. Hirokawa, “Transmission enhancement in rectangular-coordinate orthogonal multiplexing by excitation optimization of slot arrays for a given distance in the non-far region communication,” IEICE Trans. Commun., vol. E103-B, no. 2, pp. 130--138, Feb. 2020. [ DOI ] [PDF]
  21. N. Matsumura, K. Nishimori, R. Taniguchi, T. Hiraguri, T. Tomura, and J. Hirokawa, “Novel unmanned aerial vehicle based line-of-sight MIMO configuration independent of transmitted distance using millimeter wave,” IEEE Access, vol. 8, pp. 11679--11691, Jan. 2020. [ DOI ]
  22. T. Tomura, D. Kim, M. Wakasa, Y. Sunaguchi, J. Hirokawa, and K. Nishimori, “A 20-GHz-band 64×64 hollow waveguide two-dimensional Butler matrix,” IEEE Access, vol. 7, pp. 164080--164088, Nov. 2019. [ DOI ]
  23. H. Arakawa, H. Irie, T. Tomura, and J. Hirokawa, “Suppression of E-plane sidelobes using double slit-layers in a corporate-feed waveguide slot array antenna consisting of 2×2-element radiating units,” IEEE Trans. Antennas Propag., vol. 67, no. 6, pp. 3743--3751, Jun. 2019. [ DOI ]
  24. M. Wakasa, D. Kim, T. Tomura, and J. Hirokawa, “Wideband design of a short-slot 2-plane coupler by the mode matching/FEM hybrid analysis considering the structural symmetry,” IEICE Trans. Commun., vol. E102-B, no. 5, pp. 1019--1026, May 2019. [ DOI ] [PDF]
  25. T. Tomura, H. Hirayama, and J. Hirokawa, “A PCB-integratable metal cap slot antenna for 60-GHz band mobile terminals,” IEICE Trans. Commun., vol. E102-B, no. 2, pp. 317--323, Feb. 2019. [ DOI ] [PDF]
  26. H. Irie, T. Tomura, and J. Hirokawa, “Perpendicular-corporate feed in a four-layer circularly-polarized parallel-plate slot array,” IEICE Trans. Commun., vol. E102-B, no. 1, pp. 137--146, Jan. 2019. [ DOI ]
  27. X. Cheng, Y. Yao, T. Tomura, J. Hirokawa, T. Yu, J. Yu, and X. Chen, “A compact multi-beam end-fire circularly polarized septum antenna array for millimeter-wave applications,” IEEE Access, vol. 6, pp. 62784--62792, Dec. 2018. [ DOI ]
  28. X. Cheng, Y. Yao, J. Hirokawa, T. Tomura, T. Yu, J. Yu, and X. Chen, “Analysis and design of a wideband end-fire circularly polarized septum antenna,” IEEE Trans. Antennas Propag., vol. 66, pp. 5783--5793, Nov. 2018. [ DOI ]
  29. T. Nagayama, S. Akiba, T. Tomura, and J. Hirokawa, “Photonics-based millimeter-wave band remote beamforming of array-antenna integrated with photodiode using variable optical delay line and attenuator,” J. Lightw. Technol., vol. 36, no. 19, pp. 4416--4422, Oct. 2018. [ DOI ]
  30. X. Cheng, Y. Yao, T. Tomura, J. Hirokawa, T. Yu, J. Yu, and X. Chen, “Millimeter-wave frequency beam scanning array with a phase shifter based on substrate-integrated-waveguide,” IEEE Access, vol. 6, pp. 47408--47414, Aug. 2018. [ DOI ]
  31. T. Tomura, M. Takikawa, Y. Inasawa, and H. Miyashita, “Simultaneous optimal design method of primary radiator and main reflector for shaped beam antennas,” IEICE Trans. Commun., vol. E100-B, no. 2, pp. 211--218, Feb. 2017. [ DOI ]
  32. T. Tomura, J. Hirokawa, T. Hirano, and M. Ando, “A 45o linearly polarized hollow-waveguide 16×16-slot array antenna covering 71-86 GHz band,” IEEE Trans. Antennas Propag., vol. 62, no. 10, pp. 5061--5067, Oct. 2014. [ DOI ]
  33. T. Tomura, J. Hirokawa, T. Hirano, and M. Ando, “A wideband 16×16-element corporate-feed hollow-waveguide slot array antenna in the 60-GHz band,” IEICE Trans. Commun., vol. E97-B, no. 4, pp. 798--806, Apr. 2014. [ DOI ]
  34. T. Tomura, Y. Miura, M. Zhang, J. Hirokawa, and M. Ando, “A 45o linearly polarized hollow-waveguide corporate-feed slot array antenna in the 60-GHz band,” IEEE Trans. Antennas Propag., vol. 60, no. 8, pp. 3640 --3646, Aug. 2012. [ DOI ]
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