title: Development of horn antenna mixer array with internal local oscillator module for microwave imaging diagnostics.
abstract: A new antenna array is proposed in order to improve the sensitivity and complexity of microwave imaging diagnostics systems such as a microwave imaging reflectometry, a microwave imaging interferometer, and an electron cyclotron emission imaging. The antenna array consists of five elements: a horn antenna, a waveguide-to-microstrip line transition, a mixer, a local oscillation (LO) module, and an intermediate frequency amplifier. By using an LO module, the LO optics can be removed, and the supplied LO power to each element can be equalized. We report details of the antenna array and characteristics of a prototype antenna array.
authors.affiliation: Department of Mechanical Systems Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan.
authors.forename: D
authors.initials: D
authors.lastname: Kuwahara
authors.affiliation: Department of Intelligent System Engineering, Ube National College of Technology, Ube, Yamaguchi 755-8555, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Ito
authors.affiliation: Department of Helical Plasma Research, National Institute for Fusion Science, Toki, Gifu 509-5292, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Nagayama
authors.affiliation: Department of Applied Physics, National Defense Academy, Yokosuka, Kanagawa 239-0811, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Yoshinaga
authors.affiliation: Department of Pure and Applied Physics, Kansai University, Suita, Osaka 564-8680, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Yamaguchi
authors.affiliation: Graduate School of Pure and Applied Science, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Yoshikawa
authors.affiliation: Graduate School of Pure and Applied Science, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan.
authors.forename: J
authors.initials: J
authors.lastname: Kohagura
authors.affiliation: Equipment Development Center, Institute for Molecular Science, Okazaki, Aichi 444-8585, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Sugito
authors.affiliation: Department of Information Electronics, Fukuoka Institute of Technology, Fukuoka, Fukuoka 811-0295, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Kogi
authors.affiliation: Art, Science and Technology Center for Cooperative Research, Kyusyu University, Kasuga, Fukuoka 816-8580, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Mase