Akihira Miyachi

(宮地晃平)

Profile Information

Affiliation: Associate Senior Researcher, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency

Degree: 修士(材料科学)(北陸先端科学技術大学院大学)
博士(工学)(群馬大学)

J-GLOBAL ID: 200901022558054044
researchmap Member ID: 5000057252

Research Interests

Research Areas

Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Electronic devices and equipment /

Research History

Mar, 2025 - Present

Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency
Apr, 2017 - Feb, 2025

National Astronomical Observatory of Japan, National Institutes of Natural Sciences
Dec, 2013 - Mar, 2017

Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency
Nov, 2008 - Oct, 2013

National Astronomical Observatory of Japan, National Institutes of Natural Sciences
Apr, 2008 - Jul, 2008

National Institute for Materials Science

Education

- 2006

Gunma University
- 2002

Japan Advanced Institute of Science and Technology
- 1999

Physics, Faculty of Science, Division 2, Tokyo University of Science

Committee Memberships

Jun, 2017 - Mar, 2019

運営委員会委員, 自然科学研究機構分子科学研究所装置開発室

Papers

Fabrication and Evaluation of Waveguide Josephson Array Oscillators at Millimeter-Wave Lengths for SIS Mixer-Based Amplifiers

Yosuke Murayama, Akira Kawakami, Wenlei Shan, Shohei Ezaki, Akihira Miyachi, Sho Masui, Takafumi Kojima, Yoshinori Uzawa

IEEE Transactions on Applied Superconductivity, 35(5), Aug, 2025
Development of a Waveguide Josephson Oscillator for SIS Mixer-Based Amplifiers

Yoshinori Uzawa, Akira Kawakami, Takafumi Kojima, Kazumasa Makise, Sho Masui, Akihira Miyachi, Yosuke Murayama, Yuto Kozuki, Wenlei Shan

IEEE Transactions on Applied Superconductivity, 34(3), May, 2024
Development of an SIS mixer-based amplifier for large-scale multipixel heterodyne receivers

Yoshinori Uzawa, Akira Kawakami, Takafumi Kojima, Kazumasa Makise, Sho Masui, Yosuke Murayama, Akihira Miyachi, Wenlei Shan

MILLIMETER, SUBMILLIMETER, AND FAR-INFRARED DETECTORS AND INSTRUMENTATION FOR ASTRONOMY XII, PT 1, 13102, 2024
ALMA Band 8 version2 receiver upgrade project

Takafumi Kojima, Tetsuhiro Minamidani, Ryo Sakai, Hiroaki Imada, Keiko Kaneko, Sho Masui, Kazunori Uemizu, Kazumasa Makise, Akihira Miyachi, Shohei Ezaki, Tomonori Tamura, Shun Ishii, Bunyo Hatsukade

MILLIMETER, SUBMILLIMETER, AND FAR-INFRARED DETECTORS AND INSTRUMENTATION FOR ASTRONOMY XII, PT 1, 13102, 2024
Development of superconducting devices supporting radio astronomy

Yoshinori Uzawa, Matthias Kroug, Takafumi Kojima, Masanori Takeda, Kazumasa Makise, Shohei Ezaki, Wenlei Shan, Akihira Miyachi, Yasunori Fujii, Hirotaka Terai

IEICE Transactions on Electronics, E104C(9) 411-421, Sep 1, 2021
Superconducting Receiver Technologies Supporting ALMA and Future Prospects

Uzawa, Y., Fujii, Y., Kojima, T., Kroug, M., Shan, W., Ezaki, S., Miyachi, A., Kiuchi, H., Gonzalez, A.

Radio Science, 56(5), 2021
Wideband technology development to increase the RF and instantaneous bandwidth of ALMA receivers

Takafumi Kojima, Kazunori Uemizu, Hitoshi Kiuchi, Tomonori Tamura, Keiko Kaneko, Ryo Sakai, Akihira Miyachi, Wenlei Shan, Yoshinori Uzawa, Alvaro Gonzalez, Matthias Kroug, Takeshi Sakai

Proceedings of SPIE - The International Society for Optical Engineering, 11453, 2020
A horn-coupled 4-beam dual-polarization balanced sis mixer based on planar-integrated circuits

Wenlei Shan, Shohei Ezaki, Keiko Kaneko, Akihira Miyachi, Takafumi Kojima, Yoshinori Uzawa

Proceedings of the 31st Symposium on Space Terahertz Technology, ISSTT 2020, 67, 2020
An SIS-mixer-based amplifier for multi-pixel heterodyne receivers

Yoshinori Uzawa, Takafumi Kojima, Yuto Kozuki, Yasunori Fujii, Akihira Miyachi, Tomonori Tamura, Shohei Ezaki, Wenlei Shan

Proceedings of SPIE - The International Society for Optical Engineering, 11453, 2020
Experimental Study of a Planar-Integrated Dual-Polarization Balanced SIS Mixer

Wenlei Shan, Shohei Ezaki, Keiko Kaneko, Akihira Miyachi, Takafumi Kojima, Yoshinori Uzawa

IEEE Transactions on Terahertz Science and Technology, 9(6) 549-556, Nov, 2019
Performance of a 275-500 GHz SIS mixer with 3-22 GHz IF

Takafumi Kojima, Matthias Kroug, Kazunori Uemizu, Yasutaka Niizeki, Akihira Miyachi, Keiko Kaneko, Yoshinori Uzawa

ISSTT 2019 - 30th International Symposium on Space Terahertz Technology, Proceedings Book, 34, 2019
Experimental Study of a Monolithic Planar-integrated Dual Polarization Balanced SIS Mixer

Wenlei Shan, Shohei Ezaki, Akihira Miyachi, Takafumi Kojima, Yoshinori Uzawa

ISSTT 2019 - 30th International Symposium on Space Terahertz Technology, Proceedings Book, 35, 2019
275-500-GHz wideband waveguide SIS mixers

Kojima, T., Kroug, M., Gonzalez, A., Uemizu, K., Kaneko, K., Miyachi, A., Kozuki, Y., Asayama, S.

IEEE Transactions on Terahertz Science and Technology, 8(6) 638-646, 2018
Hybrid Semiconductor Integrated Recitifer for Wireless Power Transmission into Spacecraft

Ryoko Kishikawa, Harunobu Seita, Akihira Miyachi, Yuki Furuse, Toshiya Nakaoka, Satoshi Yoshida, Kenjiro Nishikawa, Masahiro Horibe, Shigeo Kawasaki

2017 IEEE WIRELESS POWER TRANSFER CONFERENCE (WPTC 2017), 2017
Design of Concurrent Dual-Band Rectifier with Harmonic Signal Control

Koshi Hamano, Ryuya Tanaka, Satoshi Yoshida, Akihira Miyachi, Kenjiro Nishikawa, Shigeo Kawasaki

2017 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM (IMS), 1038-1041, 2017
C Band GaN Diode Rectifier with 3W DC Output for High Power Microwave Power Transmission Applications

Satoshi Yoshida, Akihira Miyachi, Ryoko Kishikawa, Masahiro Horibe, Kenjiro Nishikawa, Shigeo Kawasaki

2016 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM (IMS), 2016
Design of C-band Rectitler with Watt-Class DC Output Using 0.18μm CMOS and GaN Diode

Takana Kaho, Ryoko Kishikawa, Akihira Miyachi, Shigeo Kawasaki

2016 IEEE WIRELESS POWER TRANSFER CONFERENCE (WPTC), 2016
Uncertainty Estimation for Gallium Nitride Diode Model based on VNA Measurement at 5.8 GHz

Ryoko Kishikawa, Masahiro Horibe, Akihira Miyachi, Makoto Matsunoshita, Shigeo Kawasaki

2016 CONFERENCE ON PRECISION ELECTROMAGNETIC MEASUREMENTS (CPEM 2016), 2016
Design of corrugated-horn-coupled MKID focal plane for CMB B-mode polarization

Yutaro Sekimoto, Shigeyuki Sekiguchi, Shibo Shu, Masakazu Sekine, Tom Nitta, Masato Naruse, Agnes Dominjon, Takashi Hasebe, Wenlei Shan, Takashi Noguchi, Akihira Miyachi, Makoto Mita, Shigeo Kawasaki

MILLIMETER, SUBMILLIMETER, AND FAR-INFRARED DETECTORS AND INSTRUMENTATION FOR ASTRONOMY VIII, 9914, 2016
Design of Dual-Band Rectifier Using Microstrip Spurline Notch Filter

Koshi Hamano, Ryuya Tanaka, Satoshi Yoshida, Akihira Miyachi, Kenjiro Nishikawa, Shigeo Kawasaki

2016 IEEE INTERNATIONAL SYMPOSIUM ON RADIO-FREQUENCY INTEGRATION TECHNOLOGY (RFIT), 2016
Development for Germanium Blocked Impurity Band Far-Infrared Image Sensors with Fully-Depleted Silicon-On-Insulator CMOS Readout Integrated Circuit

Wada, T., Arai, Y., Baba, S., Hanaoka, M., Hattori, Y., Ikeda, H., Kaneda, H., Kochi, C., Miyachi, A., Nagase, K., Nakaya, H., Ohno, M., Oyabu, S., Suzuki, T., Ukai, S., Watanabe, K., Yamamoto, K.

Journal of Low Temperature Physics, 184(1-2), 2016
The dawn of the new RF-HySIC semiconductor integrated circuits: An initiative for hybrid ICs consisting of Si and compound semiconductors

Kawasaki, S., Miyachi, A.

IEICE Transactions on Electronics, E99C(10) 1085-1093, 2016
Development of Superconducting THz Receivers for Radio Astronomy

Yoshinori Uzawa, Yasunori Fujii, Matthias Kroug, Kazumasa Makise, Alvaro Gonzalez, Keiko Kaneko, Takafumi Kojima, Akihira Miyachi, Shingo Saito, Hirotaka Terai, Zhen Wang

2016 41ST INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ), 2016 Peer-reviewed
Tuning circuit material for mass-produced terahertz SIS receivers

Y. Uzawa, Y. Fujii, A. Gonzalez, K. Kaneko, M. Kroug, T. Kojima, A. Miyachi, K. Makise, S. Saito, H. Terai, Z. Wang

IEEE Transactions on Applied Superconductivity, 25(3), Jun 1, 2015
The X-band High Gain and Radiation-Hardness Low-Noise GaAs MMIC Amplifier with Cryogenic Temperature for X-ray Astronomy

Takumasa Noji, Akihira Miyachi, Takahiro Kikuchi, Noriko Y. Yamasaki, Kazuhisa Mitsuda, Shigeo Kawasaki

2014 ASIA-PACIFIC MICROWAVE CONFERENCE (APMC), 114(391(ED2014 117-137)) 160-162, 2014
ALMA Band 10 (787-950 GHz): Summary of the production of 73 receivers and first light results

Alvaro Gonzalez, Yasunori Fujii, Keiko Kaneko, Matthias Kroug, Takafumi Kojima, Koichi Kuroiwa, Akihira Miyachi, Kazumasa Makise, Zhen Wang, Shin'ichiro Asayama, Yoshinori Uzawa

MILLIMETER, SUBMILLIMETER, AND FAR-INFRARED DETECTORS AND INSTRUMENTATION FOR ASTRONOMY VII, 9153, 2014 Peer-reviewed
Optical Efficiencies of Lens-Antenna Coupled Kinetic Inductance Detectors at 220 GHz

Masato Naruse, Yutaro Sekimoto, Takashi Noguchi, Akihira Miyachi, Kenichi Karatsu, Tom Nitta, Masakazu Sekine, Yoshinori Uzawa, Tohru Taino, Hiroaki Myoren

IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY, 3(2) 180-186, Mar, 2013
Development and testing of Band 10 receivers for the ALMA project

Uzawa, Y., Fujii, Y., Gonzalez, A., Kaneko, K., Kroug, M., Kojima, T., Kuroiwa, K., Miyachi, A., Saito, S., Makise, K., Wang, Z., Asayama, S.

Physica C: Superconductivity and its Applications, 494, 2013
The First Six ALMA Band 10 Receivers

Yasunori Fujii, Alvaro Gonzalez, Matthias Kroug, Keiko Kaneko, Akihira Miyachi, Takao Yokoshima, Koichi Kuroiwa, Hideo Ogawa, Kazumasa Makise, Zhen Wang, Yoshinori Uzawa

IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY, 3(1) 39-49, Jan, 2013
Frequency bandwidth adjustment by precision post-processing for a 0.78-0.95 THz band sis mixer

Akihira Miyachi, Kojima Takafumi, Yasunori Fujii, Masanori Takeda, Yoshinori Uzawa, Matthias Kroug, Takashi Noguchi

Key Engineering Materials, 643 157-163, 2013 Peer-reviewed
Performance of the ALMA Band 10 SIS Receiver Prototype Model

Yasunori Fujii, Matthias Kroug, Keiko Kaneko, Alvaro Gonzalez, Yoshinori Uzawa, Takafumi Kojima, Koich Kuroiwa, Akihira Miyachi, Kazumasa Makise, Zhen Wang, Wenlei Shan

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 21(3) 606-611, Jun, 2011 Peer-reviewed
A Low-Noise Terahertz SIS Mixer Incorporating a Waveguide Directional Coupler for LO Injection

Takafumi Kojima, Kouichi Kuroiwa, Yoshinori Uzawa, Matthias Kroug, Masanori Takeda, Yasunori Fujii, Keiko Kaneko, Akihira Miyachi, Zhen Wang, Hideo Ogawa

JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES, 31(11) 1321-1330, Nov, 2010 Peer-reviewed
Nano-dot and -pit arrays with a pitch of 25 nm × 25 nm fabricated by EB drawing, RIE and nano-imprinting for 1 Tb/in2 storage

Sumio Hosaka, Zulfakri Mohamad, Masumi Shirai, Hirotaka Sano, You Yin, Akihira Miyachi, Hayato Sone

Microelectronic Engineering, 85(5-6) 774-777, May, 2008
Ultrahigh Vacuum Non-Contact Atomic Force Microscope Observation of Reconstructed Si(110) Surface

宮地晃平, 曾根逸人, 保坂純男

日本金属学会誌, 72(4) 290-294, Apr, 2008 Peer-reviewed
Extremely small proximity effect in 30 keV electron beam drawing with thin Calixarene Resist for 20 × 20 nm2 pitch dot arrays

Sumio Hosaka, Zulfakri Mohamad, Masumi Shira, Hirotaka Sano, You Yin, Akihira Miyachi, Hayato Sone

Applied Physics Express, 1(2) 027003 1-3, Feb, 2008
Growth control of self-assembled ErSi2 nanowires on Si(0 0 1) and Si(1 1 0) surfaces

Hayato Sone, Terukazu Mishima, Akihira Miyachi, Takuya Fukuda, Sumio Hosaka

Microelectronic Engineering, 84(5-8) 1491-1495, May, 2007
Prototypical lateral multi-state phase-change memory with a multi-layer media

Y. Yin, N. Higano, K. Ohta, A. Miyachi, M. Asai, H. Sone, S. Hosaka

Proceeding of 2007 IEEE International Conference on Electron Devices and Solid-State Circuits, 149-152, 2007
Characteristics of N-doped Sb2Te3 films by X-ray diffraction and resistance measurement for phase-change memory

You Yin, Naoya Higano, Kazuhiro Ohta, Akihira Miyachi, Masahiro Asai, Daisuke Niida, Hayato Sone, Sumio Hosaka

MATERIALS AND PROCESSES FOR NONVOLATILE MEMORIES II, 997 287-+, 2007 Peer-reviewed
In situ SEM observation of grain formation and growth induced by electrical pulses in lateral Ge(2)Sb(2)Tes phase-change memory

You Yin, Daisuke Niida, Kazuhiro Ohta, Akihira Miyachi, Masahiro Asai, Naoya Higano, Hayato Sone, Sumio Hosaka

MATERIALS AND PROCESSES FOR NONVOLATILE MEMORIES II, 997 331-+, 2007
Ultrahigh vacuum non-contact atomic force microscope observation of reconstructed Si(110) surface

Akihira Miyachi, Hayato Sone, Sumio Hosaka

MATERIALS TRANSACTIONS, 47(10) 2595-2598, Oct, 2006 Peer-reviewed
A novel lateral phase-change random access memory characterized by ultra low RESET current and power consumption

You Yin, Akihira Miyachi, Daisuke Niida, Hayato Sone, Sumio Hosaka

Japanese Journal of Applied Physics, Part 2: Letters, 45(24-28) L726-L729, Jul 14, 2006
Electrical properties of phase change and channel current control in ultrathin phase-change channel transistor memory by annealing

You Yin, Akihira Miyachi, Daisuke Niida, Hayato Sons, Sumio Hosaka

Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, 45(4 B) 3238-3242, Apr 25, 2006
Formation of very fine pit and dot arrays using EB writing for ultrahigh density storage toward 1 Tb/in(2)

S. Hosaka, H. Sano, A. Miyachi, K. Itoh, H. Sone

2005 IEEE CONFERENCE ON ELECTRON DEVICES AND SOLID-STATE CIRCUITS, PROCEEDINGS, 343-346, 2005 Peer-reviewed
Thickness dependences of phase change and channel current control in phase-change channel transistor

Y. Yin, A. Miyachi, D. Niida, H. Sone, S. Hosaka

2005 IEEE CONFERENCE ON ELECTRON DEVICES AND SOLID-STATE CIRCUITS, PROCEEDINGS, 617-620, 2005 Peer-reviewed

Misc.

アルマバンド8v2受信機アップグレードプロジェクトの概要

小嶋崇文, 南谷哲宏, 坂井了, 今田大皓, 金子慶子, 増井翔, 上水和典, 牧瀬圭正, 宮地晃平, 江崎翔平, 田村友範

日本天文学会年会講演予稿集, 2024, 2024
Evaluation of a 150 GHz Josephson Array Oscillator Using Balanced SIS Mixers

村山洋佑, 川上彰, 鵜澤佳徳, 鵜澤佳徳, SHAN Wenlei, SHAN Wenlei, 牧瀬圭正, 牧瀬圭正, 牧瀬圭正, 増井翔, 小嶋崇文, 小嶋崇文, 宮地晃平, 江崎翔平

応用物理学会秋季学術講演会講演予稿集(CD-ROM), 85th, 2024
150 GHz Josephson array oscillator for SIS-mixer-based amplifier

川上彰, 村山洋佑, 鵜澤佳徳, 鵜澤佳徳, 牧瀬圭正, 牧瀬圭正, 牧瀬圭正, 増井翔, 小嶋崇文, 小嶋崇文, 宮地晃平, SHAN Wenlei, 江崎翔平

応用物理学会秋季学術講演会講演予稿集(CD-ROM), 85th, 2024
Research and development of high-sensitivity receivers and SIS-based devices for (sub-)millimeter-wave ratio astronomy in the 2030s

小嶋崇文, 牧瀬圭正, 江崎翔平, 田村友範, 宮地晃平, SHAN Wenlei, 金子慶子, 坂井了, 今田大皓, 上水和典, 増井翔, 増井翔, 鵜澤佳徳

応用物理学会春季学術講演会講演予稿集(CD-ROM), 70th, 2023
野辺山45m電波望遠鏡搭載用100-GHz帯109素子電波カメラの開発:実験室における雑音評価

村山洋佑, 新田冬夢, 永井誠, 鈴木隆司, 樋川遼太朗, 鈴木理花子, 野地涼平, 宮澤啓, 青木美和, 久野成夫, 中井直正, 関本裕太郎, 松尾宏, 江崎翔平, 宮地晃平, SHAN Wenlei, 都築俊宏, 野口卓, 成瀬雅人

日本天文学会年会講演予稿集, 2022, 2022

Professional Memberships

- Dec, 2025

薄膜表面分科会
THE JAPANESE SOCIETY FOR QUALITY CONTROL
日本金属学会
応用物理学会
日本天文学会

Research Projects

Wireless Safety Monitoring Sensor System for a Reusable Spacecraft Using the Wireless Information Energy Transmission Technology

Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, Apr, 2011 - Mar, 2015

KAWASAKI Shigeo, INATANI Yoshifumi, NARUO Yoshihiro, MITA Makoto, MARU Yusuke, YOSHIDA Satoshi, MIYAJI Akihira, NISHIKAWA Kenjiro, ITOH Tatsuo
半導体材料のナノメートルスケールの表面形状と機械的電子的物性の研究

その他の研究制度, 2003
UHV-NC-AFM Observation

The Other Research Programs
UHV-NC-AFM Observation

New Program for the Promotion of Basic Reseach by Public Corporation

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