Journal papers

Google Scholar, Web of Science, ORCID, T2R2, researchmap.
  1. S. Chen, T. Tomura, J. Hirokawa, K. Itou, M. Suga, Y. Shirato, D. Uchida, and N. Kita, “Design for operation in two frequency bands by division of the coupled region in a waveguide 2-plane coupler,” IEICE Trans. Electron., vol. E105-C, no. 12, pp. 729-739, Dec. 2022. [ DOI ]
  2. Y. Sunaguchi, T. Tomura, and J. Hirokawa, “Control of radiation direction in an aperture array excited by a waveguide 2-plane hybrid coupler,” IEICE Trans. Commun., vol. E105-B, no. 8, pp. 906-912, Aug. 2022. [ DOI ]
  3. S. Ji, T. Tomura, and J. Hirokawa, “A wideband and high-gain all-metallic perpendicular-corporate-fed multi-layered parallel-plate slot array antenna,” IEEE Access, vol. 10, pp. 38000-38011, Apr. 2022. [ DOI ]
  4. S. Ji, T. Tomura, and J. Hirokawa, “Fast analysis and bandwidth enhancement of the radiating subarray by method of moments for a parallel-plate slot array antenna with perpendicular-corporate feed,” IEEE Trans. Antennas Propag., vol. 70, no. 4, pp. 2645-2655, Apr. 2022. [ DOI ]
  5. 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. 7821-7830, Dec. 2021. [ DOI ]
  6. 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 ]
  7. 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 ]
  8. 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 ]
  9. 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 ]
  10. 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 ]
  11. 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 ]
  12. 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 ]
  13. T. Tomura and J. Hirokawa, “Anisotropic conductivity measurements by two kinds of multimode rectangular plate-laminated cavities,” IEEE Trans. Microw. Theory Techn., pp. 170-178, 2021. [ DOI ]
  14. 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. 1784-1788, 2021. [ DOI ]
  15. 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 ]
  16. 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]
  17. 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 ]
  18. 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 ]
  19. 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]
  20. 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 ]
  21. 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 ]
  22. 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 ]
  23. 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 ]
  24. 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]
  25. 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 ]
  26. 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 ]
  27. 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 ]
  28. 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]
  29. 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]
  30. 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 ]
  31. 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 ]
  32. 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 ]
  33. 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 ]
  34. 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 ]
  35. 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 ]
  36. 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 ]
  37. 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 ]
  38. 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 ]

Letters

  1. J. Shuang, J. Hirokawa, T. Tomura, and H. Saito, “X-band grating-loaded parallel-plate slot array antenna with low reflection,” IEICE Commun. Express, vol. X12-B, no. 6, pp. 1--1, Jun. 2023 (to be published). [ DOI ]
  2. M. Machida, R. Mizokuchi, J. Yoneda, T. Tomura, and T. Kodera, “Mixed-mode rf reflectometry of quantum dots for reduction of crosstalk effects,” Japanese Journal of Applied Physics, vol. 62, no. SC, p. SC1086, Mar. 2023. [Online]. Available: https://dx.doi.org/10.35848/1347-4065/acbb0eDOI | http ]
  3. T. Ruckkwaen, T. Tomura, and J. Hirokawa, “Short-range transmission improvement by dog-bone cross-slot feed in radial line slot antenna,” IEICE Commun. Express, vol. 11, no. 6, pp. 257--262, Jun. 2022. [ DOI ]
  4. 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 ]
This list was generated by bibtex2html 1.98.