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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| MW, ED | 2025-01-23 13:00 |
Tokyo | fukaya-kouminkan (Primary: On-site, Secondary: Online) |
A Frequency-agile Beam-steerable Microstrip Filtering Array Antenna Kazusa Watanabe (Saitama Univ.), Masataka Ohira (Doshisha Univ.), Zhewang Ma (Saitama Univ.) |
[more] | |
| MW, ED | 2025-01-23 13:25 |
Tokyo | fukaya-kouminkan (Primary: On-site, Secondary: Online) |
Designs of Two-Layer Filtering Antenna Array with Transmission Zeros Using only Adjacent Couplings Chiharu Ikeda (Saitama Univ.), Masataka Ohira (Doshisha Univ.), Zhewang Ma (Saitama Univ.) |
[more] | |
| MW | 2024-12-19 15:30 |
Aichi | Toyohashi University of Technology (Primary: On-site, Secondary: Online) |
A New Coupling Configuration of Reflectionless Bandpass Filters and Its Microstrip Filter Design Koya Hirota (Saitama Univ.), Masataka Ohira (Doshisha Univ.), Zhewang Ma (Saitama Univ.), Hiroyuki Deguchi (Doshisha Univ.)  MW2024-147 |
(To be available after the conference date) [more] | MW2024-147 pp.18-23 |
| EMT, IEE-EMT | 2024-11-28 10:00 |
Shizuoka | Shizuoka Convestion & Arts Center | Improvement of Characteristics of a Dual-Band Orthogonally Polarized Single-Layer Reflectarray with Region Segmentation for Mutual Coupling Suppression Haruki Tanaka, Masataka Ohira, Hiroyuki Deguchi (Doshisha Univ.) EMT2024-81 |
[more] | EMT2024-81 pp.117-122 |
| EMT, IEE-EMT | 2024-11-28 10:50 |
Shizuoka | Shizuoka Convestion & Arts Center | Optimization for Low Cross-Polarization Multimode Horn with Spherical Wavefront Hiroyuki Deguchi, Masataka Ohira (Doshisha Univ.) EMT2024-83 |
This paper presents a design method for a wideband multimode primary horn by controlling the wavefront on the aperture. ... [more] | EMT2024-83 pp.127-132 |
| MW, EMT, OPE, MWPTHz, EST, IEE-EMT [detail] | 2024-07-12 10:30 |
Hokkaido | otaru-shimin-kaikan (Primary: On-site, Secondary: Online) |
On the Multi-Band Operation of 7.1/8.5/20/30-GHz Spline-Taper Horn Antenna with Coaxial-Groove Walls Hideyuki Nanno, Hiroki Nishida, Masataka Ohira, Hiroyuki Deguchi (Doshisha Univ.) EMT2024-49 MW2024-73 OPE2024-52 EST2024-50 MWPTHz2024-56 |
This paper proposes a single circular waveguide feed horn antenna operating in four frequency bands. A spline taper and ... [more] | EMT2024-49 MW2024-73 OPE2024-52 EST2024-50 MWPTHz2024-56 pp.213-218 |
| MW, EMT, OPE, MWPTHz, EST, IEE-EMT [detail] | 2024-07-12 10:55 |
Hokkaido | otaru-shimin-kaikan (Primary: On-site, Secondary: Online) |
Multimode Transmission Equation using Line-Integral Formulation for Taper Waveguide with Straight Axis Hiroyuki Deguchi, Masataka Ohira (Doshisha Univ.) EMT2024-50 MW2024-74 OPE2024-53 EST2024-51 MWPTHz2024-57 |
This paper proposes a detailed process for converting an area integral into a line integral using Stokes' theorem and Ga... [more] | EMT2024-50 MW2024-74 OPE2024-53 EST2024-51 MWPTHz2024-57 pp.219-224 |
| MW | 2024-06-14 10:55 |
Tokyo | Hachijomachi-shoko-kai (Primary: On-site, Secondary: Online) |
[Special Talk]
Fundamentals of Microwave Filter Design Masataka Ohira, Hiroyuki Deguchi (Doshisha Univ.) MW2024-25 |
The purpose of this paper is to provide the basic principles and the fundamentals of microwave filter design so that stu... [more] | MW2024-25 pp.34-39 |
| EMT, IEE-EMT | 2024-05-27 13:30 |
Tokyo | The Institute of Electrical Engineers of Japan | Two-band Independent Control of Orthogonal Polarization Single-layer Reflectarray with Arbitrarily Shaped Elements Haruki Tanaka, Yuya Makino, Masataka ohira, Hiroyuki Deguchi (Doushisha Univ) EMT2024-3 |
[more] | EMT2024-3 pp.13-18 |
| EST | 2024-05-17 11:25 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Design of Compact Wideband BPFs Using Microstrip Triple-Mode Resonators with Lumped Chip Elements Kota Matsuzaki, Zhewang Ma, Masataka Ohira (Saitama Univ.) EST2024-3 |
In this paper, a novel microstrip triple-mode resonator with lumped chip elements is proposed, and is use to design a co... [more] | EST2024-3 pp.13-18 |
| MW | 2024-05-17 10:00 |
Osaka | Osaka University Toyonaka Campus (Primary: On-site, Secondary: Online) |
Design and Experiments of Circularly Polarized Wideband Filtering Antenna with 20% Fractional Bandwidth Ken Sakiyama (Saitama Univ.), Masataka Ohira (Doshisha Univ.), Zhewang Ma (Saitama Univ.) MW2024-12 |
In this paper, we propose a new structure of circularly polarized wideband filtering antenna (filtenna) that realizes a ... [more] | MW2024-12 pp.23-28 |
| ED, MW | 2024-01-26 10:10 |
Tokyo | Kikai-Shinko-Kaikan Bldg. (Primary: On-site, Secondary: Online) |
Design of Novel Box-type Coupling Microstrip Diplexer with Transmission Zeros Yudai Nishiyama, Masataka Ohira, Zhewang Ma (Saitama Univ.) ED2023-72 MW2023-164 |
This paper proposes a new box-type coupling microstrip diplexer that can place transmission zeros at arbitrary frequenci... [more] | ED2023-72 MW2023-164 pp.29-34 |
| MW | 2023-06-22 14:00 |
Kanagawa | Yugawara-machi Shou-Kou-Kai Bldg. (Primary: On-site, Secondary: Online) |
Design of Fourth-order Symmetric Box-Coupling Microstrip Bandpass Filters with Transmission Zeros for Asymmetric Frequency Responses Koya Hirota, Masataka Ohira, Zhewang Ma (Saitama Univ.) MW2023-21 |
Bandpass filters (BPFs) composed of four resonators as a basic component have been proposed so far, such as CQ filters. ... [more] | MW2023-21 pp.7-12 |
| MW, ED | 2023-01-27 10:00 |
Tokyo | Kikai-Shinko-Kaikan Bldg. (Primary: On-site, Secondary: Online) |
Design of Parasitic-Element Loaded Wideband Filtering Antenna with Unidirectional Radiation Pattern over 30% Frequency Bandwidth Ken Sakiyama, Masataka Ohira, Zhewang Ma (Saitama Univ.) ED2022-87 MW2022-146 |
In this paper, we propose a new structure of wideband filtering antenna that realizes a very flat in-band gain and unidi... [more] | ED2022-87 MW2022-146 pp.7-12 |
| MW, ED | 2023-01-27 10:25 |
Tokyo | Kikai-Shinko-Kaikan Bldg. (Primary: On-site, Secondary: Online) |
A Reinforcement Learning Approach Enabling Automatic Microstrip BPF Design for Multiple Specifications Yuto Asai, Masataka Ohira, Zhewang Ma (Saitama Univ.) ED2022-88 MW2022-147 |
[more] | ED2022-88 MW2022-147 pp.13-18 |
| EMT, IEE-EMT | 2022-11-17 11:05 |
Tokyo | Kikai-Shinko-Kaikan Bldg. (Primary: On-site, Secondary: Online) |
[Invited Lecture]
A Neural-Network Assisted Microwave Filter Design Masataka Ohira, Zhewang Ma (Saitama Univ.) EMT2022-46 |
A surrogate-based electromagnetic (EM) optimization method using neural networks (NNs) is presented for computationally ... [more] | EMT2022-46 pp.12-17 |
| ED, MW | 2022-01-27 15:05 |
Online | Online | [Invited Lecture]
A Compact 26 GHz Filtering Antenna with Cross Coupling Using LTCC Substrate Kaoru Sudo, Ryo Mikase, Yoshinori Taguchi, Koichi Takizawa, Natsumi Minamitani, Kengo Onaka, Saneaki Ariumi, Hisao Hayafuji (Murata), Masataka Ohira (Saitama Univ.) ED2021-66 MW2021-108 |
This paper proposes a compact 26 GHz filtering antenna with cross coupling using LTCC substrate. The cross coupling betw... [more] | ED2021-66 MW2021-108 pp.22-27 |
| MW | 2021-12-17 09:55 |
Kanagawa | Kawasaki City Industrial Promotion Hall (Primary: On-site, Secondary: Online) |
Precise Design of an 11-Pole BPF Using TM010 Mode Dielectric Ring Resonators with Novel Capacitive Coupling Structures Fan Liu, Zhewang Ma, Weihao Zhang, Masataka Ohira (Saitama Univ.), Dongchun Qiao, Guosheng Pu, Masaru Ichikawa (HUAWEI Technologies) MW2021-96 |
[more] | MW2021-96 pp.67-72 |
| MW | 2021-12-17 10:20 |
Kanagawa | Kawasaki City Industrial Promotion Hall (Primary: On-site, Secondary: Online) |
A Novel Design of Wideband Impedance Transformers Weihao Zhang, Zhewang Ma, Fan Liu, Masataka Ohira (Saitama Univ.), Xiaolong Wang (JLU) MW2021-97 |
[more] | MW2021-97 pp.73-78 |
| MW | 2021-12-17 11:15 |
Kanagawa | Kawasaki City Industrial Promotion Hall (Primary: On-site, Secondary: Online) |
Building Surrogate Model Using Convolutional Autoencoder for Fast Frequency Response Calculation of Planar BPFs Ren Shibata, Masataka Ohira, Ma Zhewang (Saitama Univ.) MW2021-99 |
Recently, surrogate models using deep learning are introduced to speed up electromagnetic (EM) analysis. For instance, a... [more] | MW2021-99 pp.85-90 |
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