Capacitance Value Control for Metamaterial Reflectarray using Multi-layer Mushroom Structure with Parasitic Patches

Authors

  • Tamami Maruyama NTT DOCOMO, Inc., 3-5 Hikari-no-oka, Yokosuka, Kanagawa 239-8536 Japan
  • Tatsuo Furuno NTT DOCOMO, Inc., 3-5 Hikari-no-oka, Yokosuka, Kanagawa 239-8536 Japan
  • Yasuhiro Oda NTT DOCOMO, Inc., 3-5 Hikari-no-oka, Yokosuka, Kanagawa 239-8536 Japan
  • Jiyun Shen NTT DOCOMO, Inc., 3-5 Hikari-no-oka, Yokosuka, Kanagawa 239-8536 Japan
  • Tomoyuki Ohya NTT DOCOMO, Inc., 3-5 Hikari-no-oka, Yokosuka, Kanagawa 239-8536 Japan

Keywords:

Capacitance Value Control for Metamaterial Reflectarray using Multi-layer Mushroom Structure with Parasitic Patches

Abstract

A mushroom-structure reflectarray can be designed by setting the values of inductance L and capacitance C based on LC resonant circuit theory. Since the capacitance value is determined by the gap size of mushroom patches and the range of the gap size is limited by the manufacturing process, it is difficult to adjust the capacitance value to achieve the desired reflection phase for the reflectarray design. To address this issue, this paper proposes introducing multi-layer parasitic patches on the mushroom structure and controlling the capacitance values using the number of parasitic layers based on the parallel resonant circuit theory. This paper also proposes a novel design method for mushroom reflectarrays when the incident electric field and beam control direction of the scattered waves are set parallel by focusing on the capacitance value. We measure reflected and scattered waves in an anechoic chamber. The measurement results of the direction of the reflected wave are shown compared to the results of the theoretical and simulation analyses.

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Author Biographies

Tamami Maruyama, NTT DOCOMO, Inc., 3-5 Hikari-no-oka, Yokosuka, Kanagawa 239-8536 Japan

Tamami Maruyama is a senior
research engineer at the NTT
DOCOMO Research Laboratories.
She received her B.S. and M.S.
degrees in 1985 and 1988,
respectively, from the department
of mathematics, Tsuda College,
Tokyo, Japan. In 2001, she received her Ph.D. degree from Tohoku University, Sendai,
Japan. In 1988, she joined the Nippon Telegraph and
Telephone Corporation (NTT). In 2003, she joined
NTT DOCOMO INC. In 1995, she received the Young
Engineer Award from IEEE AP-S Tokyo Chapter. In
1998, she received the Excellent Paper Award from the
IEICE. In 2008, she received the Best Paper Award
from ISAP 2008. Dr. Maruyama is a member of the
IEEE and IEICE. Hermain research interests include
the optimum antenna design method, genetic algorithm,
application of metamaterials and reflectarray to wireless
communications, design of multi-frequency antennas
for digital mobile communication base stations, small
sector antennas for indoor high-speed wireless LANs
and small multi-band antennas that employ the genetic
algorithm for handsets.

Tatsuo Furuno, NTT DOCOMO, Inc., 3-5 Hikari-no-oka, Yokosuka, Kanagawa 239-8536 Japan

Tatsuo Furuno received the B.S.
degree from Niigata University,
Japan, in 1986. He joined NTT and
engaged in the research and
development of cordless telephone
system, radio propagation
characteristics for PHS(personal
handy-phone system) and Wireless
LAN. He joined NTT DOCOMO in 1999 and engaged
in the research and development of public wireless
LAN service, indoor radiopropagation and cognitive
radio. He is currently a senior research engineer at NTT
DOCOMO Research Laboratories

Yasuhiro Oda, NTT DOCOMO, Inc., 3-5 Hikari-no-oka, Yokosuka, Kanagawa 239-8536 Japan

Yasuhiro Oda received the B.S.
degree in Physics from Nagoya
University, Nagoya, Japan, in 1990.
He joined the Nippon
Telegraph and Telephone
Corporation (NTT) Laboratories,
Kanagawa, Japan, in 1990. He has
been engaged in research on radio
propagation for land mobile communication systems,
radio link design, and positioning technologies. Since
1992, he has been with the Research and Development
Department, NTT Mobile Communication Network Inc.
He is currently an Executive Research Engineer of
Research Laboratories, NTT DOCOMO, Inc.

Jiyun Shen, NTT DOCOMO, Inc., 3-5 Hikari-no-oka, Yokosuka, Kanagawa 239-8536 Japan

Jiyun Shen was born in Shanghai,
China. He received his B.S. and
M.S. degrees in 2001 and 2003,
respectively, from the
undergraduate department of
Electrical and Electronic
Engineering and the graduate
department of Communications and
Computer Engineering, Kyoto University, Japan. From
2003, he became a research engineer of the DOCOMO Research Laboratories. In 2008, he received
the Young Researcher's Award from the IEICE. His
current main research interests include location
algorithm, global positioning system (GPS), orthogonal
frequency-division multiplexing (OFDM), multiple-
input multiple-output (MIMO), channel coding, radio
wave propagation analysis, radio wave signal
processing. He is a member of IEICE communications
society.

Tomoyuki Ohya, NTT DOCOMO, Inc., 3-5 Hikari-no-oka, Yokosuka, Kanagawa 239-8536 Japan

Tomoyuki Ohya received his B.E.
and M.E. degrees inElectronic
Engineering from Kyoto University
in 1986 and 1988 respectively, and
his M.S. degree inManagement of
Technology from Massachusetts
Institute of Technology in 2000. He
joined Nippon Telegraph and
Telephone Corporation (NTT) in 1989, and since 1992,
he has been working at NTT DOCOMO. He was
engaged in the research and development of digital
signal processing technologies and wireless
transmission technologies. He received Young
Researcher’s Award from IEICE in 1995. He is a
member of IEEE, IEICE and The Acoustical Society of
Japan.
Currently, he is a general manager of technology &
solution department in mmbi, Inc., and in charge of
standardization and development of ISDB-Tmm mobile
multimedia broadcasting technologies.

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Published

2022-05-02

How to Cite

[1]
T. . Maruyama, T. . Furuno, Y. . Oda, J. . Shen, and T. . Ohya, “Capacitance Value Control for Metamaterial Reflectarray using Multi-layer Mushroom Structure with Parasitic Patches”, ACES Journal, vol. 27, no. 1, pp. 28–41, May 2022.

Issue

2012: Vol 27 Iss 1

Section

General Submission