Patents by Inventor Meng-Hua TSAI

Meng-Hua TSAI 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).

  • Publication number: 20250210851
    Abstract: A wireless communication device includes an antenna module and a flexible substrate. The antenna module includes an antenna structure and a control chip. The control chip is configured to use an antenna structure to perform wireless communication. The flexible substrate is used to carry the antenna module and includes two substrate regions. The antenna structure includes a first antenna radiation plate and a second antenna radiation plate. An open slot is extended from an edge of the first antenna radiation plate to a center of the first antenna radiation plate. The second antenna radiation plate is disposed under the first antenna radiation plate to overlap the first antenna radiation plate. There is a distance between the first antenna radiation plate and the second antenna radiation plate, thus the second antenna radiation plate is coupled to the first antenna radiation plate.
    Type: Application
    Filed: October 29, 2024
    Publication date: June 26, 2025
    Inventors: Chih Yang LOU, Meng-Hua TSAI, Sin-Siang WANG, Wei Ting LEE
  • Patent number: 12294153
    Abstract: An array antenna includes a flexible substrate formed by stacked liquid crystal polymer (LCP) layers and has at least one feed point. At least one serial antenna is arranged on the flexible substrate, and a microstrip is extended from the feed point to connect a plurality of radiating elements in series to form the serial antenna. The tail end one of the radiating elements of the serial antenna is connected to one end of a ground microstrip, and another end of the ground microstrip is short-circuited to the ground. The length of the ground microstrip is approximately one fourth of the wavelength of the center frequency of the array antenna. Feeding sections where microstrips feeding to the radiating elements are in a horn and/or groove shape. Desired frequency and bandwidth may be obtained by adjusting lengths and widths of feeding sections respectively.
    Type: Grant
    Filed: October 24, 2022
    Date of Patent: May 6, 2025
    Assignee: QUANTUMZ INC.
    Inventors: Chih-Yang Lou, Meng-Hua Tsai, Wei-Ting Lee, Sin-Siang Wang
  • Patent number: 12270847
    Abstract: An antenna test system includes a box body, a supporting device, at least one probe device, a signal measuring device, and a moving device. The box body has at least an operation side configured to be opened to allow access to devices inside the box body. The supporting device is disposed in the box body and the antenna circuit to be tested is arranged thereon. The probe device is disposed in the box body and configured to apply an antenna testing signal to the antenna circuit to emit an antenna working signal. The signal measuring device is disposed in the box body to receive the antenna working signal emitted from the antenna circuit. The moving device is disposed in the box body and configured to carry the signal measuring device to maneuver in three directions of X-axis, Y-axis, and Z-axis to receive the antenna working signal in different positions.
    Type: Grant
    Filed: May 10, 2023
    Date of Patent: April 8, 2025
    Assignee: QuantumZ Inc.
    Inventors: Meng-Hua Tsai, Wei-Ting Lee, Chun-Yen Wang, Wei-Cheng Lin
  • Publication number: 20250080211
    Abstract: An antenna structure includes an upper patch antenna, a lower patch antenna, a grounding layer, a transmission line layer, and a first feeding line and a second feeding line passing through the grounding layer. Each of the first feeding line and the second feeding line includes a first portion, a second portion and a third portion. The first portion is disposed between the lower patch antenna and the grounding layer and is perpendicular to the grounding layer. The second portion is disposed between the grounding layer and the transmission line layer and is perpendicular to the grounding layer. The third portion is disposed within the grounding layer and is parallel to the grounding layer. The third portion is coupled between the first portion and the second portion.
    Type: Application
    Filed: June 20, 2024
    Publication date: March 6, 2025
    Inventors: Kun Yen TU, Meng-Hua TSAI, Sin-Siang WANG, Wei Ting LEE, Ming-Hsiang HUANG
  • Patent number: 12191900
    Abstract: A millimeter wave radio frequency (RF) structure uses a substrate including a liquid-crystal polymer material, at least one dual-polarized antenna, a RF transceiver module, and a switching module electrically connected to the at least one dual-polarized antenna and the RF transceiver module, where the switching module includes a first switching element and a second switching element electrically connected to the at least one dual-polarized antenna, and a third switching element electrically connected to the first switching element and the second switching element, to enhance characteristics of a liquid-crystal polymer (LCP) substrate for millimeter waves, and implement high-frequency, high-speed transmission while ensuring high reliability.
    Type: Grant
    Filed: July 25, 2022
    Date of Patent: January 7, 2025
    Assignee: QUANTUMZ INC.
    Inventors: Kun-Yen Tu, Meng-Hua Tsai, Wei-Ting Lee, Sin-Siang Wang, Gang-Lin Zhang
  • Publication number: 20250007168
    Abstract: A dual-polarized patch antenna includes a radiator layer, at least one middle layer disposed below the radiator layer, a ground plane layer disposed below the middle layer to provide a reference potential, and a feed layer disposed below the ground plane layer. The radiator layer includes an insulation substrate that has a top surface and a bottom surface, a base patch that is disposed on the bottom surface, and a top patch that is disposed on the top surface, and that is spaced apart from the base patch by a patch distance. The top patch includes a center portion and an annular portion that encircles and is spaced apart from the center portion. The feed layer includes a feed substrate and two feed lines. The two feed lines are arranged substantially perpendicular to each other for feeding electrical signals.
    Type: Application
    Filed: June 27, 2024
    Publication date: January 2, 2025
    Inventors: Cheng-Yi LIN, Meng-Hua TSAI, Wei-Ting LEE, Sin-Siang WANG
  • Publication number: 20240405490
    Abstract: A high-frequency connector includes a plurality of connection terminal groups, at least one first metal part, a plurality of second metal parts and an insulating shell. Each connection terminal group includes a male terminal and a female terminal, the male terminal is in contact with the female terminal to transmit signals, and the connection terminal groups are arranged along a first direction; the at least one first metal part extends along the first direction; the second metal parts are disposed between the plurality of connection terminal groups and extend along a second direction, in which each second metal part includes at least two metal pieces, and the at least two metal pieces are not connected to each other; the insulating shell carries the second metal parts, so that the at least one first metal part and the second metal parts are not in contact with each other.
    Type: Application
    Filed: December 20, 2023
    Publication date: December 5, 2024
    Inventors: He-Tsung HUNG, Meng-Hua TSAI, Wei Ting LEE, Sin-Siang WANG
  • Publication number: 20240329195
    Abstract: An electric device and a method for utilizing millimeter wave communication and radar sensing are provided. The electric device includes an antenna module, a millimeter wave communication module, a radar sensing module and a control module. The millimeter wave communication module and the radar sensing module share a sine-wave generator circuit, a frequency upconverter and a frequency downconverter, and respectively perform a millimeter wave communication operation and a radar sensing operation in accordance with an operation indicator signal transmitted by the control module. The method includes: using an operation indicator signal transmitted by a control module to control a millimeter wave communication module and a radar sensing module to perform a millimeter wave communication operation and a radar sensing operation in a predetermined work period.
    Type: Application
    Filed: February 22, 2024
    Publication date: October 3, 2024
    Inventors: Chih Yang LOU, Meng-Hua TSAI, Wei Ting LEE, Sin-Siang WANG
  • Publication number: 20240223150
    Abstract: A Balun filter is disposed on a circuit board, and includes a first wire, a second wire, a third wire and a ground plane. The first wire has one end for disposing a first feeding point. The second wire has one end for disposing a second feeding point. The third wire is configured for disposing a third feeding point and includes a first coupling section, a second coupling section, a first central section and a second central section. The third feeding point is located between the first central section and the second central section, and the first coupling section, the first central section, the second central section and the second coupling section are electrically connected in sequence. In a parallel direction of the first wire, the first feeding point and the second feeding point are located in two opposite directions, respectively, relative to the third feeding point.
    Type: Application
    Filed: December 21, 2023
    Publication date: July 4, 2024
    Inventors: Kun Yen TU, Meng-Hua TSAI, Wei Ting LEE, Sin-Siang WANG
  • Publication number: 20240154629
    Abstract: A 24 GHz band-pass filter includes a step impedance resonator, a first U-shape feeding portion, a second U-shape feeding portion, short-circuit stubs and open-circuit stubs. The step impedance resonator includes a first main portion, a second main portion, and a connection portion for connecting the main portions to each other. The first main portion and the second main portion are electrically connected to a first signal input/output port and a second signal input/output port. The first U-shape feeding portion is electrically connected between the first main portion and the first signal input/output port. The second U-shape feeding portion is electrically connected between the second main portion and the second signal input/output port. The short-circuit stubs are electrically connected to coupling segments of the step impedance resonator. The open-circuit stubs are electrically connected to the first U-shape feeding portion and the second U-shape feeding portion.
    Type: Application
    Filed: November 1, 2023
    Publication date: May 9, 2024
    Inventors: Kun Yen TU, Meng-Hua TSAI, Wei Ting LEE, Sin-Siang WANG
  • Patent number: 11967762
    Abstract: An antenna structure includes a substrate, a plurality of reflective plates, a grounding plate, a radiating member, a signal feeding via and a plurality of conductive vias. The substrate has opposite first and second surfaces and comprises liquid crystal polymer. The reflective plates are arrayed on the first surface of the substrate. The grounding plate is disposed on the second surface of the substrate and overlapped with the reflective plates in a normal direction of the substrate. The grounding plate further includes an opening. The radiating member is disposed on the first surface of the substrate and physically separated from the reflective plates. The signal feeding via is coupled with the radiating member and penetrates through the substrate to be exposed in the opening of the grounding plate. The conductive vias penetrate through the substrate and respectively connect the reflective plates and the grounding plate.
    Type: Grant
    Filed: August 10, 2022
    Date of Patent: April 23, 2024
    Assignee: QuantumZ Inc.
    Inventors: Gang-Lin Zhang, Meng-Hua Tsai, Weiting Lee, Sin-Siang Wang
  • Publication number: 20240097300
    Abstract: A multi-band filter includes a circuit board, a first resonator, a second resonator, and a coupling element configured to couple the first resonator with the second resonator. The coupling element includes a first coupling capacitor, a second coupling capacitor, a first short-circuited stub and a second short-circuited stub. The first coupling capacitor has two terminals electrically connected to the first portion of the first resonator and the first portion of the second resonator respectively. The second coupling capacitor has two terminals electrically connected to the second portion of the first resonator and the second portion of the second resonator respectively. The first short-circuited stub is electrically connected to the first coupling capacitor and a ground plane. The second short-circuited stub is electrically connected to the second coupling capacitor and a ground plane.
    Type: Application
    Filed: June 20, 2023
    Publication date: March 21, 2024
    Inventors: Kun Yen TU, Meng-Hua TSAI, Weiting LEE, Sin-Siang WANG
  • Patent number: 11916313
    Abstract: An appressed antenna includes an antenna housing and a metal shell. The antenna housing comprising a housing and a planar antenna, where the planar antenna is bent with one part folded onto the inner surface of the housing and other part pressed onto the outer surface of the housing. The antenna housing is sleeve fitted to the metal shell with a gap between for the planar antenna to radiate. In this all-metal environment, the position of the antenna is close to the gap opening will increase radiation efficiency. By having at least a branch at the tail end of the appressed antenna, the appressed antenna can have a good return loss and antenna gain.
    Type: Grant
    Filed: March 29, 2022
    Date of Patent: February 27, 2024
    Assignee: QuantumZ Inc.
    Inventors: Kun-Yen Tu, Meng-Hua Tsai, Wei-Ting Lee, Sin-Siang Wang
  • Patent number: 11862869
    Abstract: An antenna structure includes a substrate, a plurality of reflective plates, a grounding plate, a radiating member and a plurality of conductive vias. The substrate contains liquid crystal polymer and has opposite first and second surfaces. The reflective plates are arranged in an array on the first surface of the substrate. The grounding plate is arranged on the second surface of the substrate and overlaps with the reflective plates in a normal direction of the substrate. The radiating member is on the second surface of the substrate and does not overlap with the reflective plates in the normal direction of the substrate. The radiating member has an open slot which is defined by a first radiating branch and a second radiating branch that generate at least two different operating frequency bands. The conductive vias respectively penetrate the substrate and connect with the reflective plates and the grounding plate.
    Type: Grant
    Filed: June 8, 2022
    Date of Patent: January 2, 2024
    Assignee: QuantumZ Inc.
    Inventors: Gang-Lin Zhang, Meng-Hua Tsai, Weiting Lee, Sin-Siang Wang
  • Patent number: 11843176
    Abstract: An array antenna of a radar includes a liquid crystal polymer (LCP) substrate with antenna transceiver circuits embedded. A plurality of patch array antennas are disposed on the LCP substrate and connected to the antenna transceiver circuit. Each patch array antenna includes a plurality of patch antennas connected in series, and the foremost patch antenna has a concave slot on the radiating surface by each side of respective feed line. By use of a LCP substrate can ensure stable material characteristics in different environments. Compared with a single patch antenna, the gain may be improved by 6 dB by connecting four patch antennas in series. A concave slot is formed on a radiating surface of a patch antenna to optimize a feed impedance, thereby to improve a working bandwidth of the antenna to alleviate an excessively narrow bandwidth of a patch antenna.
    Type: Grant
    Filed: February 25, 2022
    Date of Patent: December 12, 2023
    Assignee: QUANTUMZ INC.
    Inventors: Wei-Huang Chen, Meng-Hua Tsai, Wei-Ting Lee, Sin-Siang Wang
  • Patent number: 11843172
    Abstract: A patch antenna includes a dielectric substrate formed by a high dielectric coefficient material covered with a soft material. The dielectric substrate has a first surface, an opposite second surface, and surrounding side surfaces there between. The patch antenna further includes a radiating metal arm formed on at least the first surface with a thin metal layer in a specific shape, a grounding metal plate disposed on the second surface, and a parasitic metal arm extending from the grounding metal plate towards the first surface via at least one of the side surfaces. The parasitic metal arm is approximate but not connected to the radiating metal arm. The radiation metal arm further includes an enclosed slot, together with the parasitic metal arm, improve the working bandwidth and high directivity of the antenna.
    Type: Grant
    Filed: March 8, 2022
    Date of Patent: December 12, 2023
    Assignee: QUANTUMZ INC.
    Inventors: Chih-Yang Lou, Meng-Hua Tsai, Wei-Ting Lee, Sin-Siang Wang
  • Publication number: 20230366918
    Abstract: An antenna test system includes a box body, a supporting device, at least one probe device, a signal measuring device, and a moving device. The box body has at least an operation side configured to be opened to allow access to devices inside the box body. The supporting device is disposed in the box body and the antenna circuit to be tested is arranged thereon. The probe device is disposed in the box body and configured to apply an antenna testing signal to the antenna circuit to emit an antenna working signal. The signal measuring device is disposed in the box body to receive the antenna working signal emitted from the antenna circuit. The moving device is disposed in the box body and configured to carry the signal measuring device to maneuver in three directions of X-axis, Y-axis, and Z-axis to receive the antenna working signal in different positions.
    Type: Application
    Filed: May 10, 2023
    Publication date: November 16, 2023
    Inventors: Meng-Hua TSAI, Wei-Ting LEE, Chun-Yen WANG, Wei-Cheng LIN
  • Publication number: 20230299450
    Abstract: A three-dimensional (3D) filter and a fabrication method thereof are provided. The 3D filter includes a circuit board, a first ring-type resonator, a second ring-type resonator and a via structure. The circuit board includes a first circuit layer, a second circuit layer and a third circuit layer. The third circuit layer is located between the first circuit board and the second circuit board. The first ring-type resonator is disposed in the first circuit layer and has a first surrounding area corresponding to a first cut-off frequency band. The second ring-type resonator is disposed in the second circuit layer and has a second surrounding area corresponding to a second cut-off frequency band. The via structure passes through the first circuit layer, the second circuit layer and the third circuit layer, and is electrically connected to the first ring-type resonator and the second ring-type resonator.
    Type: Application
    Filed: March 14, 2023
    Publication date: September 21, 2023
    Inventors: Gang-Lin ZHANG, Meng-Hua TSAI, Weiting LEE, Sin-Siang WANG
  • Publication number: 20230231320
    Abstract: An array antenna includes a flexible substrate formed by stacked liquid crystal polymer (LCP) layers and has at least one feed point. At least one serial antenna is arranged on the flexible substrate, and a microstrip is extended from the feed point to connect a plurality of radiating elements in series to form the serial antenna. The tail end one of the radiating elements of the serial antenna is connected to one end of a ground microstrip, and another end of the ground microstrip is short-circuited to the ground. The length of the ground microstrip is approximately one fourth of the wavelength of the center frequency of the array antenna. Feeding sections where microstrips feeding to the radiating elements are in a horn and/or groove shape. Desired frequency and bandwidth may be obtained by adjusting lengths and widths of feeding sections respectively.
    Type: Application
    Filed: October 24, 2022
    Publication date: July 20, 2023
    Inventors: Chih-Yang LOU, Meng-Hua TSAI, Wei-Ting LEE, Sin-Siang WANG
  • Patent number: 11705636
    Abstract: A composite antenna and array antenna using the same. The antenna has a three-layer structure including a patch antenna, a slot antenna and a transmission line. A first layer includes a patch antenna resonating at half a wavelength, a second layer includes a slot antenna resonating at half the wavelength, and a third layer includes a transmission line and a feed point. The three layers are coupled and the entire composite antenna unit satisfies a resonance condition. A signal is fed through the transmission line and coupled to the slot antenna, and the signal from the slot antenna is further coupled to the patch antenna. This composition antenna has a desirable antenna gain, and an increased antenna bandwidth compared to a single patch antenna or slot antenna.
    Type: Grant
    Filed: January 27, 2022
    Date of Patent: July 18, 2023
    Assignee: QUANTUMZ INC.
    Inventors: Kun-Yen Tu, Meng-Hua Tsai, Wei-Ting Lee, Sin-Siang Wang