Kazumasa Tanaka

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Effect of lens and receiver apertures on the encircled energy of a diffracted Gaussian beam

Applied Optics (1988)

Kazumasa Tanaka Osamu Kanzaki Mitsuo Taguchi

Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text Kazumasa Tanaka, Osamu Kanzaki, and Mitsuo Taguchi, "Effect of lens and receiver apertures on the encircled energy of a diffracted Gaussian beam," Appl. Opt. 27, 1380-1381 (1988) Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article

Gaussian beam

10.1364/ao.27.001380

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Cavity-backed Resistance-loaded Monopole Antenna for Impulse Radar(2) ((放送方式、放送現業、無線・光伝送)2000 Asia-Pacific Symposium on Broadcasting and Communications)

映像情報メディア学会技術報告 (2000)

Mitsuo Taguchi Yoshitaka Matsuoka Yoichi Toguchi Kazumasa Tanaka

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Analysis of circular microstrip antenna with perturbation segments

Takafumi Fujimoto Kazumasa Tanaka Mitsuo Taguchi

The wall admittance of circular microstrip antennas with perturbation segments is evaluated by using Green's functions in the spectral domain. The wall susceptance can be regarded as the LC parallel circuit. In the neighborhood of the resonant frequency, the wall susceptance of the primary mode is inductive at the aperture of the perturbation segment and is capacitive at the aperture except the perturbation segment. The input impedances and axial ratios are calculated by the cavity model with these wall admittances and the geometry of the patch to radiate circular polarization is determined.

Susceptance

Aperture (computer memory)

Patch antenna

10.1109/aps.1998.690857

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Consideration on the suppression of the side lobes of diffraction field.

IEICE technical report. Microwaves (1993)

Kouichi Sakamoto Toshiyuki Tanaka Mitsuo Taguchi Kazumasa Tanaka

Side lobe

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[A case of biloma: complication of percutaneous ethanol injection therapy for hepatocellular carcinoma].

PubMed (1992)

Eiji Kohno S Chen Kazushi Numata Seiji Nakamura Kazumasa Tanaka

Percutaneous ethanol injection

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Heterodyne detection of optical signals propagating through the atmosphere in the presence of scattering and turbulence

Optics Communications (1985)

Nobuhiro Saga Kazumasa Tanaka

Heterodyne (poetry)

Heterodyne detection

Atmospheric optics

Forward scatter

10.1016/0030-4018(85)90250-0

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[A clinical experience of ofloxacin in patients with respiratory infection].

PubMed (1989)

Kazumasa Tanaka Hiroshi Suzuki Seiitsu Shimizu Hiromi OTSUKA H Takagi

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Numerical Analysis of Inverted-F Antenna on Side of Small Rectangular Conducting Plate in Vicinity of B5-sized Conducting Plate

Mitsuo Taguchi Yoshifumi Yanagisako Kazumasa Tanaka

The inverted-F antenna on side of rectangular conducting plate of 182mm by 18mm is analyzed by using WIPL-D and IE3D based on the method of moment. This antenna is located in the vicinity of the B5-sized conducting plate. The numerical results by both simulators are compared.

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Focusing of a Gaussian beam through a finite aperture lens

Applied Optics (1985)

Kazumasa Tanaka Nobuhiro Saga Koji Hauchi

The diffraction field through a finite aperture lens is obtained by using the Kirchhoff-Huygens formula. The most focused point of the diffraction field differs depending on the definition of it. The positions of the maximum axial intensity, the minimum field spread, and the maximum encircled energy are calculated and compared. They vary depending on the incidence conditions, aperture radius, and the focal length.

Aperture (computer memory)

Gaussian beam

Ptychography

Angular aperture

Beam divergence

Fresnel number

Geometrical optics

10.1364/ao.24.001098

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Citations (29)

Kazumasa Tanaka

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