US 11,955,690 B2
Radar level gauging apparatus
Kyung Sub Oh, Hwaseong-si (KR); and Yong Jae Kim, Yongin-si (KR)
Assigned to SMART RADAR SYSTEM, INC., Seongnam-si (KR)
Filed by SMART RADAR SYSTEM, INC., Seongnam-si (KR)
Filed on May 20, 2021, as Appl. No. 17/326,275.
Claims priority of application No. 10-2020-0152610 (KR), filed on Nov. 16, 2020; and application No. 10-2021-0023442 (KR), filed on Feb. 22, 2021.
Prior Publication US 2022/0158324 A1, May 19, 2022
Int. Cl. H01Q 1/22 (2006.01); G01F 23/284 (2006.01); G01S 13/88 (2006.01); G01S 7/02 (2006.01)
CPC H01Q 1/225 (2013.01) [G01F 23/284 (2013.01); G01S 13/88 (2013.01); G01S 7/028 (2021.05)] 7 Claims
OG exemplary drawing
 
6. A radio detection and ranging (RADAR) level gauging apparatus comprising:
an antenna configured to emit a RADAR signal to a level interface and receive the RADAR signal reflected from the level interface; and
a controller configured to perform transmission control for the RADAR signal emitted by the antenna, reception control for the RADAR signal received by the antenna, and level measurement control using the received RADAR signal,
wherein the antenna includes:
a lens through which the RADAR signal is transmitted or received in a direction perpendicular to the level interface; and
an absorber configured to reduce a side lobe of the RADAR signal transmitted or received through the lens,
wherein the antenna further includes a cylindrical body to constitute an exterior of the antenna and surround internal components of the antenna to protect the internal components.