Title:
LOW FREQUENCY BROADBAND ABSORBER
Document Type and Number:
WIPO Patent Application WO/2023/163363
Kind Code:
A1
Abstract:
An embodiment of the present invention provides a low frequency broadband absorber which may be realized to have a thin thickness and able to absorb broadband low frequencies. Here, the low frequency broadband absorber includes a reflection layer, a first dielectric layer, a first absorption layer, a second dielectric layer, and a second absorption layer. The first dielectric layer is provided on one surface of the reflection layer. The first absorption layer is provided on one surface of the first dielectric layer and causes a first frequency band of an electromagnetic wave to resonate so as to be lost. The second dielectric layer is provided on one surface of the first absorption layer. In addition, the second absorption layer is provided on one surface of the second dielectric layer and causes a second frequency band of an electromagnetic wave to resonate so as to be lost. Here, a first thickness of the first dielectric layer is smaller than a second thickness of the second dielectric layer, and the first frequency band is greater than the second frequency band.
Inventors:
LEE CHANG HYEONG (KR)
KIM KI CHUL (KR)
CHOI TAE IN (KR)
LEE HAK JOO (KR)
KIM KI CHUL (KR)
CHOI TAE IN (KR)
LEE HAK JOO (KR)
Application Number:
PCT/KR2023/000015
Publication Date:
August 31, 2023
Filing Date:
January 02, 2023
Export Citation:
Assignee:
CT ADVANCED META MAT (KR)
International Classes:
H01Q17/00
Foreign References:
| JP2020191398A | 2020-11-26 | |||
| KR102127364B1 | 2020-06-26 | |||
| CN113423257A | 2021-09-21 | |||
| CN107394414A | 2017-11-24 | |||
| KR20070000483A | 2007-01-02 |
Attorney, Agent or Firm:
KIM, Tae Wan (KR)
Download PDF: