IEICE Technical Report

Online edition: ISSN 2432-6380

Antennas and Propagation

Workshop Date : 2026-02-19 - 2026-02-20 / Issue Date : 2026-02-12

AP2025-209
Preliminary Study on Adaptive Beamspace Method for Single-Snapshot Direction-of-Arrival Estimation
Yuji Tanaka, Nobuyoshi Kikuma, Yoshiki Sugimoto, Kunio Sakakibara (NITech)
pp. 1 - 5

AP2025-210
Study on FDTD Analysis of Moving Media Using One-Dimensional Problem
Takuichi Hirano, Nana Matsumoto (Tokyo City Univ.)
pp. 6 - 9

AP2025-211
A Study on Inter-Cell Interference Suppression and Frequency Allocation in Multi-Cell HAPS System Employing Conformal Array Antenna
Haruto Okada (Science Tokyo), Yoshichika Ohta (SoftBank/Science Tokyo)
pp. 10 - 15

AP2025-212
[Invited Lecture] Demonstration Experiment of Beam Tracking in HAPS Feeder Link
Kazuki Matsuura, Yuki Takagi, Yoshichika Ohta (SoftBank)
pp. 16 - 21

AP2025-213
[Invited Lecture] Design of Sub-Terahertz Band Antenna Using Plating on Resin
Takayoshi Sasaki, Syunta Ichikawa, Ichiro Oshima (DKK)
pp. 22 - 25

AP2025-214
[Invited Lecture] A Study and Field Evaluation of the Vertical-Plane Directivity of Transmit Array Antennas for Outdoor mmWave Band Base Stations
Shumpei Tabuchi, Toshiki Hozen, Kazuma Tomimoto, Ryo Yamaguchi (Softbank), Keisuke Arai, Toshiki Sayama, Osamu Kagaya (AGC)
pp. 26 - 30

AP2025-215
[Invited Lecture] Study of Transmissive Metasurfaces for Transmit Array Antenna for Outdoor Base Station at mm-Wave Band
Keisuke Arai, Toshiki Sayama, Osamu Kagaya (AGC), Shumpei Tabuch, Toshiki Hozen, Kazuma Tomimoto, Ryo Yamaguchi (SoftBank)
pp. 31 - 35

AP2025-216
Wide-Angle Beam-Scanning Dual-Polarization Dielectric Lens Antenna Fed by Semicircular Parallel-Plate Horn with Simultaneously Separated Phase Centers
Shota Takada (NItech), Yoshiki Sugimoto (NITech), Kunio Sakakibara (NItech), Takanori Narita, Yuji Tanaka (NITech), Nobuyoshi Kikuma (NItech)
pp. 36 - 41

AP2025-217
Design of Planar Aperture Antenna with X-Shaped Patch Fed by Parallel Differential Lines Configured in IC-mounted Substrate in 300-GHz Band
Taisuke Uemura, Yoshiki Sugimoto, Kunio Sakakibara, Yuji Tanaka, Nobuyoshi Kikuma (NITech)
pp. 42 - 45

AP2025-218
Low-Loss and Compact Design of Rotman Lens for Feeding Multibeam Microstrip Array in 300-GHz Band
Kenta Nishimura, Yoshiki Sugimoto, Kunio Sakakibara, Motoko Sakamoto, Yuji Tanaka, Nobuyoshi Kikuma (NITech)
pp. 46 - 51

AP2025-219
Design of a Low-Grating-Lobe SIW Endfire Interpolating Fed Phased Array in 300 GHz Band
Daisuke Sakai, Yoshiki Sugimoto, Kunio Sakakibara (NIT), Yoshihiro Kanasaki (PSNRD), Yuji Tanaka, Nobuyoshi Kikuma (NIT)
pp. 52 - 56

AP2025-220
[Invited Lecture] A Study on a Lens-Type CATR System Using Serrated Structure
Genma Hattori, Sou Ema, Yuta Horie, Takehiro Miyamoto, Takanobu Nahata, Masaki Sakuraba (MWF)
pp. 57 - 62

AP2025-221
[Invited Lecture] Evaluation of a composite antenna with omnidirectional and bidirectional antennas
Takashi Yanagi, Satoshi Yamaguchi, Yasuhiro Nishioka, Toru Takahashi (Mitsubishi Electric Corp.)
pp. 63 - 68

AP2025-222
[Invited Lecture] Design and Performance Evaluation of Dielectric Waveguides in the Millimeter-Wave Band -- Toward Practical Applications --
Hiroki Hagiwara, Uichiro Azuma, Yuko Rikuta (Nihon Dengyo Kosaku)
pp. 69 - 72

AP2025-223
[Invited Lecture] Broadband VNA System Covering 100kHz to 250 GHz Using Newly Developed 0.5 mm Coaxial Connectors: Overview and Applications
Taro Matsumura (Keysight)
pp. 73 - 77

Note: Each article is a technical report without peer review, and its polished version will be published elsewhere.

The Institute of Electronics, Information and Communication Engineers (IEICE), Japan