Patents by Inventor Chul Hwang

Chul Hwang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12542361
    Abstract: Presented is a multi-band antenna module in which antennas having different polarization characteristics are coupled to prevent deterioration in isolation caused by interference between the antennas. The presented multi-band antenna module comprises: a patch antenna for transmitting/receiving a signal of a first frequency band; and a circuit board which has the patch antenna mounted on the top surface thereof, and which has a conductor pattern for transmitting/receiving a signal of a second frequency band while feeding the patch antenna.
    Type: Grant
    Filed: August 16, 2022
    Date of Patent: February 3, 2026
    Assignee: AMOTECH CO., LTD.
    Inventor: Chul Hwang
  • Patent number: 12482936
    Abstract: Proposed is a multi-band antenna module in which antennas having different polarization characteristics are coupled so as to prevent deterioration in isolation caused by interference between the antennas. The proposed multi-band antenna module comprises a circuit board. On the top surface of the circuit board, a first upper clearance area, a second upper clearance area, an upper radiator, and an upper ground are defined so as to operate as a PIFA antenna resonating in a first frequency band. On the first upper clearance area and the second upper clearance area, a first conductor area and a second conductor area operating as a monopole antenna resonating in a second frequency band are defined.
    Type: Grant
    Filed: October 7, 2022
    Date of Patent: November 25, 2025
    Assignee: AMOTECH CO., LTD.
    Inventor: Chul Hwang
  • Patent number: 12407108
    Abstract: Provided is a multi-band patch antenna which has, on a base substrate, a feeding patch and radiation patches, which are formed apart from an upper patch, so as to resonate with a first frequency band and a second frequency band. The provided multi-band patch antenna comprises: a base substrate having an upper surface, a lower surface, and a plurality of sides; an upper patch disposed on the upper surface of the base substrate; a lower patch disposed on the lower surface of the base substrate; a feeding patch disposed on the upper surface and a first side of the base substrate and disposed to be apart from the upper patch; and a first radiation patch disposed on the upper surface and a second side of the base substrate and disposed to be apart from the upper patch and the feeding patch on the upper surface of the base substrate.
    Type: Grant
    Filed: March 17, 2022
    Date of Patent: September 2, 2025
    Assignee: AMOTECH CO., LTD.
    Inventor: Chul Hwang
  • Patent number: 12294164
    Abstract: Proposed is an RFID antenna module in which feed pins of a patch antenna are connected to a first coupler and a second coupler so that the patch antenna operates as a left hand circular polarization antenna and a right hand circular polarization antenna. The proposed RFID antenna module comprises first to fourth feed pins penetrating through a laminate in which a dielectric, an upper patch, and a lower patch are laminated, and the first to fourth feed pins are spaced apart from each other.
    Type: Grant
    Filed: June 23, 2021
    Date of Patent: May 6, 2025
    Assignee: AMOTECH CO., LTD.
    Inventor: Chul Hwang
  • Patent number: 12272885
    Abstract: Disclosed is a lightweight patch antenna having grooves formed in a dielectric, an upper patch, and a lower patch so as to maintain antenna performance while being lightweight. The disclosed lightweight patch antenna comprises: a dielectric; an upper patch layered on the dielectric; a lower patch layered under the dielectric; and a plurality of lightweight grooves formed by removing a portion of a stack from the outside of the stack in which the dielectric, the upper patch, and the lower patch are stacked.
    Type: Grant
    Filed: June 21, 2021
    Date of Patent: April 8, 2025
    Assignee: AMOTECH CO., LTD.
    Inventor: Chul Hwang
  • Publication number: 20240421479
    Abstract: Proposed is a multi-band antenna module in which antennas having different polarization characteristics are coupled so as to prevent deterioration in isolation caused by interference between the antennas. The proposed multi-band antenna module comprises a circuit board. On the top surface of the circuit board, a first upper clearance area, a second upper clearance area, an upper radiator, and an upper ground are defined so as to operate as a PIFA antenna resonating in a first frequency band. On the first upper clearance area and the second upper clearance area, a first conductor area and a second conductor area operating as a monopole antenna resonating in a second frequency band are defined.
    Type: Application
    Filed: October 7, 2022
    Publication date: December 19, 2024
    Applicant: AMOTECH CO., LTD.
    Inventor: Chul HWANG
  • Publication number: 20240396219
    Abstract: Presented is a multi-band antenna module in which antennas having different polarization characteristics are coupled to prevent deterioration in isolation caused by interference between the antennas. The presented multi-band antenna module comprises: a patch antenna for transmitting/receiving a signal of a first frequency band; and a circuit board which has the patch antenna mounted on the top surface thereof, and which has a conductor pattern for transmitting/receiving a signal of a second frequency band while feeding the patch antenna.
    Type: Application
    Filed: August 16, 2022
    Publication date: November 28, 2024
    Applicant: AMOTECH CO., LTD.
    Inventor: Chul HWANG
  • Patent number: 12095173
    Abstract: Presented is a UWB antenna module configured to implement omni-directional characteristics with respect to bearings even when mounted on a metal ground plane. The presented UWB antenna module comprises: a base sheet; a radiation pattern formed on a front surface of the base sheet; and a ground pattern formed on the front surface of the base sheet and arranged to surround the radiation pattern.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: September 17, 2024
    Assignee: AMOTECH CO., LTD.
    Inventor: Chul Hwang
  • Patent number: 12095180
    Abstract: The present invention suggests a multi-band patch antenna in which an antenna pin is inserted into a single-band patch antenna, so that the multi-band patch antenna requires a minimum mounting space and can resonate in both the existing frequency bands and the V2X frequency band. The suggested multi-band patch antenna comprises: a base substrate through which a first through-hole and a second through-hole are formed; an upper patch and a lower patch arranged on the upper and lower surfaces of the base substrate, respectively; an inner conductor disposed on the inner wall surface of the first through-hole to electrically connect the upper patch to the lower patch; an antenna pin extending through the first through-hole, and including an end part disposed above the base substrate; and a first feed pin extending through the second through-hole.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: September 17, 2024
    Assignee: AMOTECH CO., LTD.
    Inventors: Chul Hwang, Sango Kim, Injo Jeong, Habin Bong, Yechan Choi, Injoo Kim, Hangyeul Kim, Piljung Jeong, Hong-Woo Kim
  • Publication number: 20240186706
    Abstract: Provided is a multi-band patch antenna which has, on a base substrate, a feeding patch and radiation patches, which are formed apart from an upper patch, so as to resonate with a first frequency band and a second frequency band. The provided multi-band patch antenna comprises: a base substrate having an upper surface, a lower surface, and a plurality of sides; an upper patch disposed on the upper surface of the base substrate; a lower patch disposed on the lower surface of the base substrate; a feeding patch disposed on the upper surface and a first side of the base substrate and disposed to be apart from the upper patch; and a first radiation patch disposed on the upper surface and a second side of the base substrate and disposed to be apart from the upper patch and the feeding patch on the upper surface of the base substrate.
    Type: Application
    Filed: March 17, 2022
    Publication date: June 6, 2024
    Applicant: AMOTECH CO., LTD.
    Inventor: Chul HWANG
  • Patent number: 11949151
    Abstract: Proposed is a smart antenna module for a vehicle in which a plurality of cellular antennas are mounted in a non-ground area and spaced apart from a ground pattern to minimize mutual interference. In the proposed smart antenna module for a vehicle, a first antenna is disposed in a ground area of a base substrate, the cellular antennas are disposed in a non-ground area of the base substrate, and the cellular antennas are electrically connected to the ground area of the lower surface of the base substrate.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: April 2, 2024
    Assignee: AMOTECH CO., LTD.
    Inventor: Chul Hwang
  • Publication number: 20240072444
    Abstract: This disclosure presents a multiband patch antenna which resonates in a second frequency band as well as in a first frequency band, i.e., a GNSS frequency band, by adding an antenna pin to a patch antenna. The presented multiband patch antenna includes a base substrate, an upper patch disposed on an upper surface of the base substrate, a lower patch disposed on a lower surface of the base substrate, a feed pin which passes through the base substrate, the upper patch, and the lower patch, and an antenna pin which is spaced apart from the feed pin and passes through the base substrate and the lower patch.
    Type: Application
    Filed: January 13, 2022
    Publication date: February 29, 2024
    Applicant: AMOTECH CO., LTD.
    Inventor: Chul HWANG
  • Publication number: 20240030611
    Abstract: Disclosed is a patch antenna in which coupling gaps are formed between a lower patch and feed pins so as to maximize the performance of the antenna. The disclosed patch antenna comprises: a base layer; an upper patch disposed on the upper surface of the base layer; a lower patch disposed on the lower surface of the base layer; and feed pins passing through the base layer, upper patch, and lower patch, wherein the feed pins are spaced from the upper patch and thereby form coupling gaps.
    Type: Application
    Filed: June 23, 2023
    Publication date: January 25, 2024
    Applicant: AMOTECH CO., LTD.
    Inventor: Chul HWANG
  • Publication number: 20230307838
    Abstract: Proposed is an RFID antenna module in which feed pins of a patch antenna are connected to a first coupler and a second coupler so that the patch antenna operates as a left hand circular polarization antenna and a right hand circular polarization antenna. The proposed RFID antenna module comprises first to fourth feed pins penetrating through a laminate in which a dielectric, an upper patch, and a lower patch are laminated, and the first to fourth feed pins are spaced apart from each other.
    Type: Application
    Filed: June 23, 2021
    Publication date: September 28, 2023
    Applicant: AMOTECH CO., LTD.
    Inventor: Chul HWANG
  • Publication number: 20230299487
    Abstract: Disclosed is a lightweight patch antenna having grooves formed in a dielectric, an upper patch, and a lower patch so as to maintain antenna performance while being lightweight. The disclosed lightweight patch antenna comprises: a dielectric; an upper patch layered on the dielectric; a lower patch layered under the dielectric; and a plurality of lightweight grooves formed by removing a portion of a stack from the outside of the stack in which the dielectric, the upper patch, and the lower patch are stacked.
    Type: Application
    Filed: June 21, 2021
    Publication date: September 21, 2023
    Applicant: AMOTECH CO., LTD.
    Inventor: Chul HWANG
  • Publication number: 20220376384
    Abstract: Proposed is a smart antenna module for a vehicle in which a plurality of cellular antennas are mounted in a non-ground area and spaced apart from a ground pattern to minimize mutual interference. In the proposed smart antenna module for a vehicle, a first antenna is disposed in a ground area of a base substrate, the cellular antennas are disposed in a non-ground area of the base substrate, and the cellular antennas are electrically connected to the ground area of the lower surface of the base substrate.
    Type: Application
    Filed: September 24, 2020
    Publication date: November 24, 2022
    Applicant: AMOTECH CO., LTD.
    Inventor: Chul HWANG
  • Publication number: 20220311142
    Abstract: The present invention suggests a multi-band patch antenna in which an antenna pin is inserted into a single-band patch antenna, so that the multi-band patch antenna requires a minimum mounting space and can resonate in both the existing frequency bands and the V2X frequency band. The suggested multi-band patch antenna comprises: a base substrate through which a first through-hole and a second through-hole are formed; an upper patch and a lower patch arranged on the upper and lower surfaces of the base substrate, respectively; an inner conductor disposed on the inner wall surface of the first through-hole to electrically connect the upper patch to the lower patch; an antenna pin extending through the first through-hole, and including an end part disposed above the base substrate; and a first feed pin extending through the second through-hole.
    Type: Application
    Filed: August 25, 2020
    Publication date: September 29, 2022
    Applicant: AMOTECH CO., LTD.
    Inventors: Chul HWANG, Sango KIM, Injo JEONG, Habin BONG, Yechan CHOI, Injoo KIM, Hangyeul KIM, Piljung JEONG, Hong-Woo KIM
  • Publication number: 20220255225
    Abstract: Presented is a UWB antenna module configured to implement omni-directional characteristics with respect to bearings even when mounted on a metal ground plane. The presented UWB antenna module comprises: a base sheet; a radiation pattern formed on a front surface of the base sheet; and a ground pattern formed on the front surface of the base sheet and arranged to surround the radiation pattern.
    Type: Application
    Filed: June 23, 2020
    Publication date: August 11, 2022
    Applicant: AMOTECH CO., LTD.
    Inventor: Chul HWANG
  • Publication number: 20220102861
    Abstract: Disclosed is a patch antenna in which coupling gaps are formed between a lower patch and feed pins so as to maximize the performance of the antenna. The disclosed patch antenna comprises: a base layer; an upper patch disposed on the upper surface of the base layer; a lower patch disposed on the lower surface of the base layer; and feed pins passing through the base layer, upper patch, and lower patch, wherein the feed pins are spaced from the upper patch and thereby form coupling gaps.
    Type: Application
    Filed: September 9, 2019
    Publication date: March 31, 2022
    Applicant: AMOTECH CO., LTD.
    Inventor: Chul HWANG
  • Patent number: 11189926
    Abstract: Presented is a multilayer patch antenna which prevents the occurrence of parasitic resonance by having a metal layer formed on the inner wall of a thru-hole, among a plurality of thru-holes formed in a lower patch antenna, penetrated by a power feeding pin of an upper patch antenna. The multilayer patch antenna presented herein comprises: an upper patch antenna having a first thru-hole formed therein; a lower patch antenna having a second thru-hole and a third thru-hole formed therein, away from each other; a first upper power feeding pin protruding under the lower patch antenna by penetrating the first thru-hole and the second thru-hole; a lower power feeding pin protruding under the lower patch antenna by penetrating the third thru-hole; and a metal layer formed inside the second thru-hole.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: November 30, 2021
    Assignee: AMOTECH CO., LTD.
    Inventor: Chul Hwang