Title:
REAL-TIME TRANSMISSION/RECEPTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/176845
Kind Code:
A1
Abstract:
The purpose of the present invention is to prevent generation of noise due to direct reception of an electromagnetic wave transmitted from a transmission antenna in a real-time transmission/reception device for transmitting and receiving in real time the electromagnetic wave having high frequency equal to or larger than a mm-wave region, and to thereby obtain the real-time transmission/reception device capable of transmitting and receiving the electromagnetic wave at high accuracy. Provided is a real-time transmission/reception device 100 that comprises a transmission antenna 20 and a reception antenna 30, and simultaneously performs transmission and reception using an electromagnetic wave having high frequency equal to or larger than the mm-wave region. Between an arrangement position of the transmission antenna and an arrangement position of the reception antenna, an electromagnetic-wave absorbing body 40 that absorbs an electromagnetic wave having frequency equal to or larger than the mm-wave region is arranged. A gap D between an antenna element 21 of the transmission antenna and the electromagnetic-wave absorbing body with respect to frequency λ of the electromagnetic wave absorbed by the electromagnetic-wave absorbing body satisfies a relation of D > (λ/2π).
Inventors:
FUJITA MASAO
HIROI TOSHIO
HIROI TOSHIO
Application Number:
PCT/JP2019/009641
Publication Date:
September 19, 2019
Filing Date:
March 11, 2019
Export Citation:
Assignee:
MAXELL HOLDINGS LTD (JP)
International Classes:
G01S7/03; H01Q1/52; H01Q17/00
Domestic Patent References:
| WO2015079812A1 | 2015-06-04 | |||
| WO2018016522A1 | 2018-01-25 |
Foreign References:
| JP2010210297A | 2010-09-24 | |||
| US6100840A | 2000-08-08 | |||
| JP2005249659A | 2005-09-15 | |||
| JP2004325160A | 2004-11-18 |
Attorney, Agent or Firm:
IKEUCHI & PARTNERS (JP)
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