Title:
CIRCUIT AND WIRELESS DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/172026
Kind Code:
A1
Abstract:
Provided is a circuit comprising: a first substrate provided with a first input/output unit to which a current, a voltage or an electromagnetic wave (hereinafter referred to as "current etc.") is applied, a second input/output unit to which a current etc. is applied, and a matrix circuit which is formed by a first line that is connected to the first input/output unit at one end and distal-end open at the other end and which has a 90-degree hybrid circuit and a delay line; a second substrate provided with a second line that is connected to the second input/output unit at one end and distal-end open at the other end; and a shield plate having an opening, wherein the shield plate causes the current etc. directed from the one end of the first line, which is the distal-end open, toward the shield plate to propagate through the opening to the one end of the second line, which is the distal-end open, and causes the current etc. directed from the one end of the second line, which is the distal-end open, toward the shield plate to propagate through the opening to the one end of the first line, which is the distal-end open.
Inventors:
KAHO TAKANA (JP)
LEE DOOHWAN (JP)
SASAKI HIROFUMI (JP)
YAGI YASUNORI (JP)
SHIMIZU TAKASHI (JP)
LEE DOOHWAN (JP)
SASAKI HIROFUMI (JP)
YAGI YASUNORI (JP)
SHIMIZU TAKASHI (JP)
Application Number:
PCT/JP2019/007403
Publication Date:
September 12, 2019
Filing Date:
February 26, 2019
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
H01P5/02; H01P5/16; H01Q3/26
Foreign References:
| JPH09298409A | 1997-11-18 | |||
| JPH0993008A | 1997-04-04 | |||
| US20150349421A1 | 2015-12-03 |
Other References:
I. E. TELATAR: "Capacity of Multi-antenna Gaussian Channels", EUROPEAN TRANSACTIONS ON TELECOMMUNICATIONS, vol. 10, 1999, pages 585 - 595, XP000912993
R. KATAOKA ET AL.: "Analog Decoding Method for Simplified Short-Range MIMO Transmission", IEICE TRANS. COMMUN., vol. E97-B, no. 3, March 2014 (2014-03-01)
KIYOMICHI ARAKI ET AL.: "OAM transmission as spatial multiplexing", ELECTRONIC INFORMATION COMMUNICATION ENGINEERS, vol. 100, no. 8, 1 August 2017 (2017-08-01), pages 854 - 858
B. PALACIN: "An 8x8 Butler Matrix for Generation of Waves Carrying Orbital Angular Momentum (OAM", THE 8TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION (EUCAP 2014, 2014, pages 2814 - 2818, XP032642836, DOI: 10.1109/EuCAP.2014.6902412
B. CETINONERI: "An 8x8 Butler Matrix in 0.13-um CMOS for 5-6-GHz Multibeam Applications", IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, vol. 59, no. 2, February 2011 (2011-02-01)
See also references of EP 3764459A4
R. KATAOKA ET AL.: "Analog Decoding Method for Simplified Short-Range MIMO Transmission", IEICE TRANS. COMMUN., vol. E97-B, no. 3, March 2014 (2014-03-01)
KIYOMICHI ARAKI ET AL.: "OAM transmission as spatial multiplexing", ELECTRONIC INFORMATION COMMUNICATION ENGINEERS, vol. 100, no. 8, 1 August 2017 (2017-08-01), pages 854 - 858
B. PALACIN: "An 8x8 Butler Matrix for Generation of Waves Carrying Orbital Angular Momentum (OAM", THE 8TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION (EUCAP 2014, 2014, pages 2814 - 2818, XP032642836, DOI: 10.1109/EuCAP.2014.6902412
B. CETINONERI: "An 8x8 Butler Matrix in 0.13-um CMOS for 5-6-GHz Multibeam Applications", IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, vol. 59, no. 2, February 2011 (2011-02-01)
See also references of EP 3764459A4
Attorney, Agent or Firm:
SHIGA INTERNATIONAL PATENT OFFICE (JP)
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