REFLECTOR ANTENNA DEVICE - MITSUBISHI ELECTRIC CORP

Title:

REFLECTOR ANTENNA DEVICE

Document Type and Number:

WIPO Patent Application WO/2021/106093

Kind Code:

A1

Abstract:

A reflector antenna device (100, 100a, 100b) comprises: a primary radiator (110, 110b) which radiates a first radio wave of a first frequency band and a second radio wave of a second frequency band, the frequency of which is lower than that of the first frequency band; and a reflector (120, 120a, 120b) having a reflection surface which reflects the first radio wave and the second radio wave radiated by the primary radiator (110, 110b). The reflection surface of the reflector (120, 120a, 120b) includes: a first region (121) including a central point of the reflection surface; and a second region (122, 122b1), which is a region at the outer circumference of the first region (121), and is provided with a plurality of recessed portions (123, 123b1). Each of the plurality of recessed portions (123, 123b1) allows the first radio wave to enter, restricts entry of the second radio wave, and reflects the first radio wave entering the recessed portion (123, 123b1) by a bottom surface (125, 125b1) of the recessed portion (123, 123b1).

Inventors:

NAKAJIMA HIROMASA (JP)
YAMAMOTO SHINICHI (JP)
TAKIKAWA MICHIO (JP)
NUIMURA SHUJI (JP)

Application Number:

PCT/JP2019/046266

Publication Date:

June 03, 2021

Filing Date:

November 27, 2019

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)

International Classes:

H01Q19/19

Domestic Patent References:

WO2018109837A1

2018-06-21

Foreign References:

JPS5944108A	1984-03-12
JPH05251925A	1993-09-28
US20050195120A1	2005-09-08
US7737903B1	2010-06-15
JPS5592002A	1980-07-12

Other References: