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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 85件中 1~20件目  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
MW 2019-11-15
09:55
Okinawa Minami Daido Villa. Tamokuteki Koryu Center Design of Wideband Microstrip Filtering Antenna with Transmission Zeros
Ilsub Song, Masataka Ohira, Zhewang Ma (Saitama Univ.) MW2019-112
In this paper, we propose and design a new structure of microstrip filtering antenna having both a wideband and flat in-... [more] MW2019-112
pp.71-76
MW 2019-11-15
10:20
Okinawa Minami Daido Villa. Tamokuteki Koryu Center On the Relationship between Direct Source/Load Coupling and Higher-order Resonances in Microwave Bandpass Filter
Masataka Ohira, Ryo Mikase, Zhewang Ma (Saitama Univ.) MW2019-113
It is well known that a direct source/load coupling contributes to the generation of transmission zeros at stopbands in ... [more] MW2019-113
pp.77-80
MW, AP
(Joint)
2019-09-20
13:10
Kanagawa JAXA (Sagamihara) Design and Experimental Evaluation of Wideband Microstrip Filtenna Based on Wideband Transmission Line Bandpass Filter
Masataka Ohira, Yusuke Suzuki, Zhewang Ma (Saitama Univ.) MW2019-58
In recent years, a filtering antenna or filtenna is becoming one of the attractive circuits that can be designed with a ... [more] MW2019-58
pp.17-22
MW
(2nd)
2019-06-26
- 2019-06-28
Overseas RUS, Bangkok, Thailand Design of Compact Wideband Bandstop Filters Using Microstrip Ring Structures
Toshiki Tabei, Zhewang Ma, Masataka Ohira (Saitama Univ.)
A novel compact wideband bandstop filter (BSF) is proposed by using microstrip ring structure with stepped impedance lin... [more]
MW, ICD 2019-03-15
14:55
Okinawa   An Automated Design Method of Microstrip BPF with Transmission Zeros Using Both Forward and Inverse Models of Neural Network
Ao Yamashita, Masataka Ohira, Zhewang Ma (Saitama Univ.) MW2018-178 ICD2018-122
A forward model of neural-network (NN) using poles and residues in rational function of S parameters has already been pr... [more] MW2018-178 ICD2018-122
pp.121-126
MW, ED 2019-01-18
14:00
Tokyo Hitachi, Central Research Lab. Design of Wideband Bandpass Filters with Quasi-Elliptic Characteristics Using Coupled Short-Circuited Stub
Kosuke Keima, Zhewang Ma, Masataka Ohira (Saitama Univ.) ED2018-85 MW2018-152
In this paper, based on the analysis of the transmission line equivalent circuits of the wideband bandpass filters (BPFs... [more] ED2018-85 MW2018-152
pp.85-90
MW, ED 2019-01-18
14:25
Tokyo Hitachi, Central Research Lab. Design and Fabrication of Microstrip Reconfigurable Bandpass Filter Using Transversal Resonator Array
Shuma Hashimoto, Masataka Ohira, Zhewang Ma (Saitama Univ.) ED2018-86 MW2018-153
 [more] ED2018-86 MW2018-153
pp.91-96
MW, ED 2019-01-18
14:50
Tokyo Hitachi, Central Research Lab. Design of Microstrip Tunable Filtering Antenna with Constant Absolute Bandwidth
Tomoyasu Soma, Masataka Ohira, Zhewang Ma (Saitama Univ.) ED2018-87 MW2018-154
A tunable antenna that can change its resonant frequency electronically is one of promising components for future wirele... [more] ED2018-87 MW2018-154
pp.97-102
MW, ED 2019-01-18
15:15
Tokyo Hitachi, Central Research Lab. Design of Quasi-Millimeter-Wave SIW Bandpass Filter with Transmission Zeros Using TE102 Mode for Negative Coupling
Yuta Shimizu, Masataka Ohira, Zhewang Ma (Saitama Univ) ED2018-88 MW2018-155
A quasi-millimeter-wave band substrate integrated waveguide (SIW) bandpass filter with a fractional bandwidth greater th... [more] ED2018-88 MW2018-155
pp.103-108
MW 2018-12-13
10:10
Kanagawa Kanagawa Univ. A High-order Cul-de-Sac Coupling Bandpass Filter Design Using Even/Odd-mode Stepped Impedance Resonators
Ryo Mikase, Masataka Ohira, Zhewang Ma (Saitama Univ.) MW2018-115
In the design of bandpass filters (BPFs), transmission zeros (TZs) can be generated at arbitrary frequency positions by ... [more] MW2018-115
pp.7-12
MW 2018-12-13
11:10
Kanagawa Kanagawa Univ. Design of Wideband Bandstop Filters Using Open-Circuited Stubs
Tianyu You, An Song, Zhewang Ma, Masataka Ohira (Saitama Univ.) MW2018-117
In this paper, an exact design method of wideband bandstop filters using open-circuited stubs is proposed. First, the va... [more] MW2018-117
pp.19-24
MW 2018-12-13
14:20
Kanagawa Kanagawa Univ. Design of Microstrip Dual-band Wilkinson Power Dividers with Large Center Frequency Ratios
An Song, Zhewang Ma (Saitama Univ.), Xiaolong Wang (Jilin Univ.), Masataka Ohira (Saitama Univ.) MW2018-121
In this paper, the design theory of a dual-band Wilkinson power divider (DBWPD) consisting of two-sections of transmissi... [more] MW2018-121
pp.43-48
MW 2018-11-16
13:15
Nagasaki Fukue Cultural Hall [Special Talk] Report on 2018 IEEE MTT-S International Microwave Symposium
Takashi Shimizu (Utsunomiya Univ.), Ryo Ishikawa (UEC), Tetsuya Ueda (Kyoto Inst. of Tech.), Masataka Ohira (Saitama Univ.), Hiroshi Okazaki (NTT DOCOMO), Yuji Komatsuzaki (Mitsubishi Electric Corp.), Tamura Masaya (TUT) MW2018-110
 [more] MW2018-110
pp.95-102
AP, MW
(Joint)
2018-09-21
15:50
Tokyo Tokyo Tech Design of Compact Wideband Bandstop Filters Using Microstrip Ring Structures
Toshiki Tabei, Zhewang Ma, Masataka Ohira (Saitama Univ.) MW2018-69
A novel compact wideband bandstop filter (BSF) is proposed by using microstrip ring structure with stepped impedance lin... [more] MW2018-69
pp.55-59
MW, WPT 2018-04-27
14:25
Tokyo Kikai-Shinko-Kaikan Building Design of Microstrip Symmetric-Coupling Quadruplet Bandpass Filters with Transmission Zeros for Symmetric and Asymmetric Frequency Responses
Ryo Mikase, Masataka Ohira, Zhewang Ma, Xiaolong Wang (Saitama Univ.) WPT2018-4 MW2018-4
Bandpass filters (BPFs) composed of four resonators as a basic component, like CQ filters, have been proposed so far. In... [more] WPT2018-4 MW2018-4
pp.13-18
ED, MW 2018-01-26
13:00
Tokyo Kikai-Shinko-Kaikan Bldg. Design of fully-canonical Cul-de-Sac coupling microstrip bandstop filter
Makoto Kanomata, Masataka Ohira, Zhewang Ma, Xiaolong Wang (Saitama Univ.) ED2017-101 MW2017-170
In the design of bandstop filter (BSF), a circuit synthesis theory of generalized Chebyshev function offers an equirippl... [more] ED2017-101 MW2017-170
pp.41-46
MW 2017-12-19
15:15
Tokyo   Design of Wideband Microstrip Filtering Antenna Using Short Stub Structure
Kazuhiro Sato, Masataka Ohira, Zhewang Ma, Xiaolong Wang (Saitama Univ.) MW2017-150
In recent years, a filtering antenna has been rapidly developed because it can be designed with a well-known filter synt... [more] MW2017-150
pp.47-52
AP, MW
(Joint)
2017-09-22
13:00
Saitama Saitama University [Tutorial Lecture] A Design Method of Filtering Antennas
Masataka Ohira (Saitama Univ.) AP2017-93
This paper summarizes a design method of filtering antenna, which is constructed by replacing the Nth resonator of an Nt... [more] AP2017-93
pp.31-36
AP, MW
(Joint)
2017-09-22
16:15
Saitama Saitama University Automatic Design of Microstrip Bandpass Filters Using Neural Networks of Forward and Inverse Models Based on Eigenmodes
Ao Yamashita, Masataka Ohira, Zhewang Ma, Xiaolong Wang (Saitama Univ.) MW2017-80
In this paper, we propose a new high-speed automatic design method of microwave bandpass filter (BPF) using neural netwo... [more] MW2017-80
pp.69-74
AP, MW
(Joint)
2017-09-22
16:40
Saitama Saitama University Design and Fabrication of Fourth-order Tunable Bandpass Filter with Absolute Bandwidth and Transmission Zeros
Shuma Hashimoto, Masataka Ohira, Zhewang Ma, Xiaolong Wang (Saitama Univ.) MW2017-81
 [more] MW2017-81
pp.75-80
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