Title:
REFLECT ARRAY
Document Type and Number:
WIPO Patent Application WO/2014/054444
Kind Code:
A1
Abstract:
One aspect of the present invention relates to a reflect array having a plurality of elements arranged in an array form, wherein each of the elements has an H-shaped patch provided apart from a ground plate, the H-shaped patch is configured by outer four apexes of the H-shaped patch, which are formed by two rectangular outer patches, and inner four apexes formed by an inner patch, in order to change the reflection phase of an electric field incident parallel to a first direction, the length of the inner patch in the first direction determined by the positions of the four apexes of the inner patch is determined while the positions of the four apexes of the outer patch and the size of the outer patch are kept constant, and in order to change the reflection phase of an electric field incident parallel to a second direction, the length in the second direction determined by the positions of the four apexes of the outer patches of the H-shaped patch regarding the second direction is determined.
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Inventors:
MARUYAMA TAMAMI (JP)
ODA YASUHIRO (JP)
SHEN JIYUN (JP)
TRAN NGOC HAO (JP)
ODA YASUHIRO (JP)
SHEN JIYUN (JP)
TRAN NGOC HAO (JP)
Application Number:
PCT/JP2013/075527
Publication Date:
April 10, 2014
Filing Date:
September 20, 2013
Export Citation:
Assignee:
NTT DOCOMO INC (JP)
International Classes:
H01Q15/22; H01Q15/14
Foreign References:
| JP2007096868A | 2007-04-12 | |||
| JP2010062689A | 2010-03-18 | |||
| JP2008252046A | 2008-10-16 | |||
| JP2012034331A | 2012-02-16 |
Other References:
FAN YANG; ANG YU; ATEF ELSHERBENI; JOHN HUANG: "Single-Layer Multi-band Circularly Polarized Reflect array Antenna: Concept, Design and Measurement", URSI GENERAL ASSEMBLY, CHICAGO, ILLINOIS, 7 August 2008 (2008-08-07)
D. M. POZAR; T. S. TARGONSKY; H. D. SYRIGOS: "Design of millimeter wave microstrip reflectarrays", IEEE TRANS. ANTENNAS PROPAGAT., vol. 45, no. 2, 1997, pages 287 - 295
T. MARUYAMA; T. FURUNO; T. OHYA; Y. ODA; Q. CHEN; K. SAWAYA: "Dual Frequency Selective Reflectarray for Propagation Improvement", IEEE IWAT, March 2010 (2010-03-01), pages 1 - 4,5464764
L. LI; Q. CHEN; Q. YUAN; K. SAWAYA; T. MARUYAMA; T. FURUNO; S UEBAYASHI: "Frequency Selective Reflectarray using Crossed-Dipole Elements with Square Loops for Wireless Communication Applications", IEEE TRANS. ANTENNAS PROPAGAT., vol. AP-59, no. 1, 2011, pages 89 - 99
T. MARUYAMA; T. FURUNO; Y. ODA; J. SHEN; T. OHYA: "Capacitance value control for metamaterial reflectarray using multi-layer mushroom structure with parasitic patches", ACES JOURNAL, vol. 27, no. 1, January 2012 (2012-01-01), pages 28 - 41
T. MARUYAMA; J. SHEN; N. TRAN; Y. ODA: "Multi-band Reflectarray using Mushroom Structure", IEEE ICWITS, 2012
T. MARUYAMA; Y. ODA; J. SHEN; N. TRAN; H. KAYAMA: "Design of wide angle reflection reflectarray using multi-layer mushroom structure to improve propagation", IEEE URSI GENERAL ASSEMBLY AND SCIENTIFIC SYMPOSIUM, 2011 XXXTH URSI, August 2011 (2011-08-01)
J. SHEN; Y. ODA; T. FURUNO; T. MARUYAMA; T. OHYA: "VTC2011", May 2011, SPRING, article "A novel approach for capacity improvement of 2x2 MIMO in LOS channel using reflectarray"
PAYAM NAYERI; FAN YANG; ATEF Z. ELSHERBENI: "Single-Feed Multi-Beam Reflectarray Antennas", IEEE AP-S, 2010
D. M. POZAR; T. S. TARGONSKY; H. D. SYRIGOS: "Design of millimeter wave microstrip reflectarrays", IEEE TRANS. ANTENNAS PROPAGAT., vol. 45, no. 2, 1997, pages 287 - 295
T. MARUYAMA; T. FURUNO; T. OHYA; Y. ODA; Q. CHEN; K. SAWAYA: "Dual Frequency Selective Reflectarray for Propagation Improvement", IEEE IWAT, March 2010 (2010-03-01), pages 1 - 4,5464764
L. LI; Q. CHEN; Q. YUAN; K. SAWAYA; T. MARUYAMA; T. FURUNO; S UEBAYASHI: "Frequency Selective Reflectarray using Crossed-Dipole Elements with Square Loops for Wireless Communication Applications", IEEE TRANS. ANTENNAS PROPAGAT., vol. AP-59, no. 1, 2011, pages 89 - 99
T. MARUYAMA; T. FURUNO; Y. ODA; J. SHEN; T. OHYA: "Capacitance value control for metamaterial reflectarray using multi-layer mushroom structure with parasitic patches", ACES JOURNAL, vol. 27, no. 1, January 2012 (2012-01-01), pages 28 - 41
T. MARUYAMA; J. SHEN; N. TRAN; Y. ODA: "Multi-band Reflectarray using Mushroom Structure", IEEE ICWITS, 2012
T. MARUYAMA; Y. ODA; J. SHEN; N. TRAN; H. KAYAMA: "Design of wide angle reflection reflectarray using multi-layer mushroom structure to improve propagation", IEEE URSI GENERAL ASSEMBLY AND SCIENTIFIC SYMPOSIUM, 2011 XXXTH URSI, August 2011 (2011-08-01)
J. SHEN; Y. ODA; T. FURUNO; T. MARUYAMA; T. OHYA: "VTC2011", May 2011, SPRING, article "A novel approach for capacity improvement of 2x2 MIMO in LOS channel using reflectarray"
PAYAM NAYERI; FAN YANG; ATEF Z. ELSHERBENI: "Single-Feed Multi-Beam Reflectarray Antennas", IEEE AP-S, 2010
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
Tadashige Ito (JP)
Tadashige Ito (JP)
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