Isao Ohta

According to our database, Isao Ohta authored at least 21 papers between 2005 and 2023.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of five.

2023

Design and Fabrication of PTFE Substrate-Integrated Waveguide Butler Matrix for Short Millimeter Waves.

Mitsuyoshi Kishihara, Kaito Fujitani, Akinobu Yamaguchi, Yuichi Utsumi, Isao Ohta

IEICE Trans. Electron., March, 2023

2021

Design and Fabrication of PTFE Substrate Integrated Waveguide Coupler by SR Direct Etching.

Mitsuyoshi Kishihara, Masaya Takeuchi, Akinobu Yamaguchi, Yuichi Utsumi, Isao Ohta

IEICE Trans. Electron., 2021

2018

Fabrication of Integrated PTFE-Filled Waveguide Butler Matrix for Short Millimeter-Wave by SR Direct Etching.

Mitsuyoshi Kishihara, Masaya Takeuchi, Akinobu Yamaguchi, Yuichi Utsumi, Isao Ohta

IEICE Trans. Electron., 2018

Improvement of Isolation Characteristics of Multi-Way Power Divider Using TE₁₀-TE_<i>p</i>0 Mode Transducer.

Mitsuyoshi Kishihara, Isao Ohta

IEICE Trans. Electron., 2018

2016

Left-Handed Waveguide Using Cutoff TM-Mode.

Mitsuyoshi Kishihara, Yuki Mizutani, Isao Ohta, Kensuke Okubo, Hironori Takimoto

IEICE Trans. Electron., 2016

2014

Parallel Ring-Line Rat-Race Circuit with Very Loose Coupling Utilizing Composite Right-/Left-Handed Transmission Lines.

Tadashi Kawai, Yuma Sumitomo, Akira Enokihara, Isao Ohta, Kei Satoh, Yasunori Suzuki, Hiroshi Okazaki, Shoichi Narahashi

IEICE Trans. Electron., 2014

2013

Design methods for broadband 3dB branch-line and rat-race hybrids.

Tadashi Kawai, Isao Ohta, Akira Enokihara

IEICE Electron. Express, 2013

Compact wideband rat-race hybrid utilizing composite right/left-handed transmission lines.

Yuma Sumitomo, Tadashi Kawai, Akira Enokihara, Isao Ohta, Kei Satoh, Yasunori Suzuki, Hiroshi Okazaki, Shoichi Narahashi

Proceedings of the 2013 IEEE Radio and Wireless Symposium, 2013

2012

Design and Fabrication of PTFE-Filled Waveguide Components by SR Direct Etching.

Mitsuyoshi Kishihara, Hiroaki Ikeuchi, Yuichi Utsumi, Tadashi Kawai, Isao Ohta

IEICE Trans. Electron., 2012

2011

Design of a Broadband Cruciform Substrate Integrated Waveguide Coupler.

Mitsuyoshi Kishihara, Isao Ohta, Kensuke Okubo

IEICE Trans. Electron., 2011

Design of an H-Plane Waveguide Intersection with High Isolation.

Hiroaki Ikeuchi, Tadashi Kawai, Mitsuyoshi Kishihara, Isao Ohta

IEICE Trans. Electron., 2011

2010

Shielded Structure of Composite Right/Left-Handed Transmission Line Using Substrate Integrated Waveguide and Floating-Conductor.

Kensuke Okubo, Mitsuyoshi Kishihara, Akifumi Ikeda, Jiro Yamakita, Isao Ohta

IEICE Trans. Electron., 2010

Band-Broadening Design Technique of CRLH-TLs Dual-Band Branch-Line Couplers Using CRLH-TLs Matching Networks.

Tadashi Kawai, Miku Nakamura, Isao Ohta, Akira Enokihara

IEICE Trans. Electron., 2010

2009

Analysis of Post-Wall Waveguide Based on H-Plane Planar Circuit Approach.

Mitsuyoshi Kishihara, Isao Ohta, Kensuke Okubo, Jiro Yamakita

IEICE Trans. Electron., 2009

2008

Dual-Band Wilkinson Power Dividers Using a Series RLC Circuit.

Tadashi Kawai, Yasuaki Nakashima, Yoshihiro Kokubo, Isao Ohta

IEICE Trans. Electron., 2008

Parallel Coupled Microstrip Couplers Compensated with Periodic Floating-Conductors on Coupled Edges.

Takao Fujii, Isao Ohta, Tadashi Kawai, Yoshihiro Kokubo

IEICE Trans. Electron., 2008

2007

Cruciform Directional Couplers in E-Plane Rectangular Waveguide.

Mitsuyoshi Kishihara, Isao Ohta, Kuniyoshi Yamane

IEICE Trans. Electron., 2007

Miniature Broad-Band CPW 3-dB Branch-Line Couplers in Slow-Wave Structure.

Takao Fujii, Isao Ohta, Tadashi Kawai, Yoshihiro Kokubo

IEICE Trans. Electron., 2007

2006

Multi-Stage, Multi-Way Microstrip Power Dividers with Broadband Properties.

Mitsuyoshi Kishihara, Isao Ohta, Kuniyoshi Yamane

IEICE Trans. Electron., 2006

2005

Design of Quadrature Hybrids and Directional Couplers Based on the Equivalent Admittance Approach.

Isao Ohta, Tadashi Kawai

IEICE Trans. Electron., 2005

Broadband Multi-Way Microstrip Power Dividers.

Mitsuyoshi Kishihara, Kuniyoshi Yamane, Isao Ohta, Tadashi Kawai

IEICE Trans. Electron., 2005