-
公开(公告)号：US20230187825A1
公开(公告)日：2023-06-15
申请号：US18073720
申请日：2022-12-02
Applicant: Korea Electronics Technology Institute
Inventor： Soo Chang CHAE , Ki Jin KIM , Kwang Ho AHN
CPC classification number: H01Q3/36 , G01S13/4463
Abstract: There is provided a feeding network device for improved direction estimation. The feeding network device according to an embodiment of the disclosure includes a first coupler, a second coupler, a first delay, a second delay, a crossover, a third coupler, a fourth coupler, a third delay, and a fourth delay. Accordingly, one sum beam and a plurality of difference beams are emitted through the feeding network device of the array antenna, and improved direction estimation is possible through a plurality of monopulse ratios, and accordingly, improvement of direction estimation in a monopulse radar device is expected.
-
公开(公告)号：US20230171335A1
公开(公告)日：2023-06-01
申请号：US17877194
申请日：2022-07-29
Applicant: Korea Electronics Technology Institute
Inventor： Soo Chang CHAE , Ki Jin KIM , Kwang Ho AHN
CPC classification number: H04M1/026 , H01Q3/22 , G01R29/08 , H01Q1/2283
Abstract: There is provided a self-diagnostic apparatus of a magnetic coupling type. The self-diagnostic apparatus according to an embodiment includes: a signal detection line which is magnetic-coupled with an RF signal line through a magnetic coupling loop; and a signal detector configured to detect a size and a phase of an RF signal by detecting a current flowing through the signal detection line. Accordingly, the apparatus grasps and diagnoses respective operation states of channels by itself in a beamforming system, without increasing and a size of the system and degrading performance.
-
Patent Agency Ranking
公开(公告)号：US20230111667A1
公开(公告)日：2023-04-13
申请号：US17877165
申请日：2022-07-29
Applicant: Korea Electronics Technology Institute
Inventor： Ki Jin KIM , Kwang Ho AHN , Soo Chang CHAE
Abstract: There is provided an ultra-small size broadband coupler. A Lange coupler according to an embodiment includes: first lines which are formed in a spiral shape, and have a first port and a second port formed at one end thereof and have connection ends formed at the other end thereof; and second lines which are formed in a spiral shape, and have connection ends formed at one end thereof to be connected to the connection ends of the first lines, and have a third port and a fourth port formed at the other end thereof. Accordingly, the Lange coupler maintains broadband characteristics while minimizing its area, so that it is possible to design a small component for mobile communication and to noticeably reduce an insertion loss.
-
公开(公告)号：US20230025634A1
公开(公告)日：2023-01-26
申请号：US17623093
申请日：2020-12-22
Applicant: Korea Electronics Technology Institute
Inventor： Ki Jin KIM , Kwang Ho AHN , Soo Chang CHAE
Abstract: Provided is a 5G dual port beamforming antenna. The beamforming antenna according to an embodiment of the present disclosure includes a plurality of patch antennas, and the patch antenna includes: a first patch positioned on an upper portion; a second patch positioned on a left side under the first patch and having a plurality of feeding ports formed thereon; a third patch positioned on an upper portion of a right side of the second patch; and a fourth patch positioned on a lower portion of the right side of the second patch. Accordingly, 3D wide angle beamforming is possible in an antenna to be used in 5G mobile communication systems, military radar systems, etc.
-
公开(公告)号：US20240178123A1
公开(公告)日：2024-05-30
申请号：US18521056
申请日：2023-11-28
Applicant: Korea Electronics Technology Institute
Inventor： Soo Chang CHAE , Ki Jin KIM , Kwang Ho AHN
CPC classification number: H01L23/49838 , H01L23/34 , H01L24/48 , H01Q1/02 , H01Q9/0457 , H05K1/0206 , H01L2224/48091 , H01L2224/48227
Abstract: There is provided a communication chip package integrating an antenna and a heat dissipation ground. In the integrated package according to an embodiment, a heat dissipation ground is coupled to a high frequency communication chip package, an antenna patch is directly disposed on an upper portion of a mold of a ceramic material, changes are made to the structure of the ceramic mold to minimize a wire bonding length to a communication chip, a capacitive power feeding method is applied through a sidewall of the ceramic mold, and heat is discharged through a lower portion of the package and also through a PCB or an additional heat dissipation structure of a lower portion of the PCB. Accordingly, an insertion loss may be minimized and an effect of heat dissipation may be maximized.
-
公开(公告)号：US20230112914A1
公开(公告)日：2023-04-13
申请号：US17563257
申请日：2021-12-28
Applicant: Korea Electronics Technology Institute
Inventor： Ki Jin KIM , Kwang Ho AHN , Soo Chang CHAE
Abstract: There is provided a quasi-circulator. The quasi-circulator includes: a first coupler having an input end connected to a transmission end; a first amplifier having an input end connected to an output end of the first coupler; a second amplifier having an input end connected to the output end of the first coupler; a second coupler having one end connected to an output end of the first amplifier and an output end of the second amplifier, and the other end connected to an antenna; and a third coupler having one end connected to the output end of the first amplifier and the output end of the second amplifier, and the other end connected to a reception end. Accordingly, a loss occurring at the quasi-circulator is minimized, and eventually, efficiency of an RF FEM employed in an ultrahigh frequency radar system is enhanced.
-
公开(公告)号：US20220271749A1
公开(公告)日：2022-08-25
申请号：US17623040
申请日：2019-12-12
Applicant: Korea Electronics Technology Institute
Inventor： Ki Jin KIM , Kwang Ho AHN , Soo Chang CHAE
IPC: H03K17/693 , H03K17/687
Abstract: Provided is a switch having a structure having an excellent isolation characteristic even without a limiter in an ultrahigh frequency hand used for a military component. A switch according to an embodiment of the present invention comprises: multiple transistors which are connected in parallel to a path from an input terminal toward an output terminal and perform switching; and a first transmission line provided between the input terminal and a node on a path to which a first transistor is connected. By the present invention, switching can be performed in an ultrahigh frequency such as W-band while a GaN transistor is used, an insertion loss is low, an isolation characteristic is excellent, and eventually efficiency of an ultrahigh frequency circuit can be further enhanced.
-
-
-
-
-
-
Search Results
7
records
(took 0.015 seconds)
