Patents by Inventor Kuan-Ta Chen

Kuan-Ta Chen 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: 11309839
    Abstract: A multi-stage amplifier with a high signal-to-noise ratio is introduced. Multiple amplification stages are cascaded between an input terminal and an output terminal of the amplifier. A controller switches the output stage among the multiple amplification stages from a normal mode to an attenuation mode in response to the amplifier input being lower than the threshold. In the attenuation mode, the output stage provides an attenuation resistor coupled in series with the load resistor of the amplifier. Noise is successfully attenuated by the attenuation-mode output stage.
    Type: Grant
    Filed: February 18, 2020
    Date of Patent: April 19, 2022
    Assignee: MEDIATEK INC.
    Inventors: Sung-Han Wen, Kuan-Ta Chen
  • Publication number: 20220048012
    Abstract: A catalyst is illustrated, which has 70-90 parts by weight of mica, 1-10 parts by weight of zeolite, 5-15 parts by weight of titanium dioxide, 1-10 parts by weight of aluminum oxide, 1-5 parts by weight of sodium oxide and 1-5 parts by weight of potassium oxide. The present disclosure also illustrates a pyrolysis device using the catalyst, and further illustrates a pyrolysis method using the catalyst and/or the pyrolysis device for thermally cracking an organic polymer.
    Type: Application
    Filed: August 13, 2021
    Publication date: February 17, 2022
    Inventors: KUAN-HSIN CHEN, CHIEN-FA HUANG, KUAN-YU CHEN, KUAN-TA CHEN
  • Publication number: 20220045647
    Abstract: An amplifier circuit includes a voltage-to-current conversion circuit and a current-to-voltage conversion circuit. The voltage-to-current conversion circuit generates a current signal according to an input voltage signal, and includes an operational transconductance amplifier (OTA) used to output the current signal at an output port of the OTA. The current-to-voltage conversion circuit generates an output voltage signal according to the current signal, and includes a linear amplifier (LA), wherein an input port of the LA is coupled to the output port of the OTA, and the output voltage signal is derived from an output signal at an output port of the LA.
    Type: Application
    Filed: July 5, 2021
    Publication date: February 10, 2022
    Applicant: MEDIATEK INC.
    Inventors: Shih-Hsiung Chien, Sung-Han Wen, Kuan-Ta Chen
  • Patent number: 11223117
    Abstract: An electronic package includes: a carrier structure; a first electronic component disposed on the carrier structure; a first insulating layer formed on the carrier structure; a first antenna structure coupled to the first insulating layer and electrically connected to the first electronic component; and a second antenna structure embedded in the carrier structure. As such, the electronic package provides more antenna functions within a limited space so as to improve the signal quality and transmission rate of electronic products. An electronic device having the electronic package is also provided. The electronic device is applicable to an electronic product having an antenna function.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: January 11, 2022
    Assignee: Siliconware Precision Industries Co., Ltd.
    Inventors: Bo-Siang Fang, Kuan-Ta Chen, Chia-Chu Lai, Ying-Wei Lu
  • Patent number: 11205999
    Abstract: The present invention provides an amplifier including a DAC, an analog signal processing circuit, a digital signal processing circuit, a signal detector and a driving stage is disclosed. The DAC is configured to perform a digital-to-analog conversion operation on a digital input signal to generate an analog input signal. The analog signal processing circuit is configured to generate a first processed signal according to the analog input signal and a feedback signal. The digital signal processing circuit is configured to process the digital input signal to generate a second processed signal. The signal detector is configured to detect strength of the digital input signal to generate a mode selection signal. The driving stage is configured to refer to the mode selection signal to receive one of the first processed signal and the second processed signal to generate an output signal, wherein the feedback signal is generated by the output signal.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: December 21, 2021
    Assignee: MEDIATEK INC.
    Inventors: Sung-Han Wen, Kuan-Ta Chen
  • Patent number: 11193972
    Abstract: An inspection equipment is used for inspecting an antenna, and includes a testing device having a first circuit structure, a carrier, a supporting part and a second circuit structure detachably stacked on one another sequentially. Therefore, the carrier, the first circuit structure, the second circuit structure or the supporting part can be detached when different devices under test are inspected, without replacing the whole testing device, thereby achieving effects of modular replacing and cost saving.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: December 7, 2021
    Assignee: Siliconware Precision Industries Co., Ltd.
    Inventors: Bo-Siang Fang, Kuan-Ta Chen, Hsinjou Lin
  • Publication number: 20210265959
    Abstract: A class-D amplifier with low pop-click noise is shown. A loop filter, a control signal generator, a first power driver, and a first feedback circuit are provided within the class-D amplifier to establish a first loop for signal amplification. The class-D amplifier further has a settling circuit and a pre-charging circuit. The settling circuit is configured to be combined with the loop filer and the control signal generator to establish a second loop to settle the loop filter and the control signal generator before the first loop is enabled. The pre-charging circuit is configured to pre-charge a positive output terminal and a negative output terminal of the first power driver.
    Type: Application
    Filed: December 23, 2020
    Publication date: August 26, 2021
    Inventors: Fong-Wen LEE, Kuan-Ta CHEN
  • Patent number: 11081776
    Abstract: An electronic package is provided. A functioning member having a concave portion and a second antenna portion is disposed on a carrier having a first antenna portion. The concave portion and the carrier form a functioning space. The first antenna portion and the second antenna portion are disposed in a projection space of the functioning space. The first antenna portion induces the second antenna portion.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: August 3, 2021
    Assignee: Siliconware Precision Industries Co., Ltd.
    Inventors: Ying-Wei Lu, Bo-Siang Fang, Kuan-Ta Chen, Chia-Chu Lai
  • Publication number: 20210119589
    Abstract: The present invention provides an amplifier including a DAC, an analog signal processing circuit, a digital signal processing circuit, a signal detector and a driving stage is disclosed. The DAC is configured to perform a digital-to-analog conversion operation on a digital input signal to generate an analog input signal. The analog signal processing circuit is configured to generate a first processed signal according to the analog input signal and a feedback signal. The digital signal processing circuit is configured to process the digital input signal to generate a second processed signal. The signal detector is configured to detect strength of the digital input signal to generate a mode selection signal. The driving stage is configured to refer to the mode selection signal to receive one of the first processed signal and the second processed signal to generate an output signal, wherein the feedback signal is generated by the output signal.
    Type: Application
    Filed: July 21, 2020
    Publication date: April 22, 2021
    Inventors: Sung-Han Wen, Kuan-Ta Chen
  • Publication number: 20210075386
    Abstract: An operational amplifier includes a single-stage amplifier and a current controller. The single-stage amplifier receives an input signal, and amplifies the input signal to generate an output signal, wherein the single-stage amplifier includes a voltage controlled current source circuit that operates in response to a bias voltage input. The current controller receives the input signal, and generates the bias voltage input according to the input signal.
    Type: Application
    Filed: July 6, 2020
    Publication date: March 11, 2021
    Inventors: Yu-Hung Lin, Kuan-Ta Chen
  • Publication number: 20210072307
    Abstract: An inspection equipment is used for inspecting an antenna, and includes a testing device having a first circuit structure, a carrier, a supporting part and a second circuit structure detachably stacked on one another sequentially. Therefore, the carrier, the first circuit structure, the second circuit structure or the supporting part can be detached when different devices under test are inspected, without replacing the whole testing device, thereby achieving effects of modular replacing and cost saving.
    Type: Application
    Filed: January 6, 2020
    Publication date: March 11, 2021
    Inventors: Bo-Siang Fang, Kuan-Ta Chen, Hsinjou Lin
  • Patent number: 10903547
    Abstract: An electronic package includes an antenna structure and an adjustment structure arranged on a carrier structure. The antenna structure includes an antenna body and a feed line that are disposed on different layers and a conductive pillar that interconnects the layers to electrically connect the antenna body and the feed line. The adjustment structure extends from the feed line to improve the bandwidth of the antenna body.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: January 26, 2021
    Assignee: Siliconware Precision Industries Co., Ltd.
    Inventors: Ying-Wei Lu, Bo-Siang Fang, Kuan-Ta Chen
  • Publication number: 20210013583
    Abstract: An electronic package is provided. A functioning member having a concave portion and a second antenna portion is disposed on a carrier having a first antenna portion. The concave portion and the carrier form a functioning space. The first antenna portion and the second antenna portion are disposed in a projection space of the functioning space. The first antenna portion induces the second antenna portion.
    Type: Application
    Filed: August 29, 2019
    Publication date: January 14, 2021
    Inventors: Ying-Wei Lu, Bo-Siang Fang, Kuan-Ta Chen, Chia-Chu Lai
  • Patent number: 10879844
    Abstract: An oscillation device includes an oscillator and a logic circuit. The oscillator generates an output oscillation signal. The logic circuit controls the oscillator according to the output oscillation signal, such that the output oscillation signal includes two different oscillation periods. The oscillation device may be used as a temperature-to-frequency converter without any bandgap reference circuit.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: December 29, 2020
    Assignee: MEDIATEK INC.
    Inventors: Wei-Lin Chen, Kuan-Ta Chen
  • Patent number: 10840581
    Abstract: An electronic package is provided with a first substrate having a first antenna portion that is stacked on a second substrate having a second antenna portion via an antenna component. During a packaging process, a gap between the first substrate and the second substrate is held constantly by the antenna component. At the same time, the antenna component is regarded as a third antenna portion of the electronic package. The performance of the antennae is not adversely affected by the antenna component despite the fact that the antenna component is in close proximity to the first and second antenna portions.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: November 17, 2020
    Assignee: Siliconware Precision Industries Co., Ltd.
    Inventors: Bo-Siang Fang, Kuan-Ta Chen, Chia-Chu Lai
  • Patent number: 10840965
    Abstract: A testing system includes: a bilinear polarized antenna for receiving and dividing a circularly polarized radio wave associating with a horizontal and a vertical polarization path of an object-to-be-tested into a first and a second high frequency signal; a phase retarder for delaying a phase of the first high frequency signal by 90 degrees to form a first high frequency signal with a phase delay of 90 degrees; a power splitter for receiving or synthesizing the first high frequency signal with the phase delay of 90 degrees and the second high frequency signal; and a high frequency signal transceiver for measuring power of the first high frequency signal with the phase delay of 90 degrees and the second high frequency signal and determining states of the horizontal and vertical polarization paths of the object-to-be-tested based on the power. Therefore, the testing system can speed up testing of the object-to-be-tested.
    Type: Grant
    Filed: April 8, 2020
    Date of Patent: November 17, 2020
    Assignee: Siliconware Precision Industries Co., Ltd.
    Inventors: Bo-Siang Fang, Kuan-Ta Chen, Ying-Wei Lu, Chia-Chu Lai, Cheng-Tsai Hsieh
  • Publication number: 20200357375
    Abstract: The present invention provides a device including a sound detector and a noise cancellation component. In the operations of the device, the sound detector is configured to receive an environment sound obtained from a microphone, and determine if the environment sound has a meaningful signal or not to generate a detection result; and the noise cancellation component is configured to perform a noise cancellation operation based on the detection result to generate an output signal to a speaker.
    Type: Application
    Filed: March 30, 2020
    Publication date: November 12, 2020
    Inventors: Kuan-Ta Chen, Nien-Hui Kung, Jing-Meng Liu
  • Publication number: 20200358400
    Abstract: A multi-stage amplifier with a high signal-to-noise ratio is introduced. Multiple amplification stages are cascaded between an input terminal and an output terminal of the amplifier. A controller switches the output stage among the multiple amplification stages from a normal mode to an attenuation mode in response to the amplifier input being lower than the threshold. In the attenuation mode, the output stage provides an attenuation resistor coupled in series with the load resistor of the amplifier. Noise is successfully attenuated by the attenuation-mode output stage.
    Type: Application
    Filed: February 18, 2020
    Publication date: November 12, 2020
    Inventors: Sung-Han WEN, Kuan-Ta CHEN
  • Patent number: 10823776
    Abstract: A testing fixture used in an antenna testing process is provided. A cover unit having a second antenna portion is arranged on a base unit configured for an electronic structure having a first antenna portion to be placed thereon. The cover unit includes a non-metal interposing portion configured for pressing the electronic structure to separate the second antenna portion from the first antenna portion. Therefore, when the antenna testing process is performed on the electronic structure, a metal shielding effect is avoided, and an over the air testing environment is provided.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: November 3, 2020
    Assignee: Siliconware Precision Industries Co., Ltd.
    Inventors: Bo-Siang Fang, Cheng-Tsai Hsieh, Kuan-Ta Chen, Ying-Wei Lu
  • Publication number: 20200304165
    Abstract: A testing system includes: a bilinear polarized antenna for receiving and dividing a circularly polarized radio wave associating with a horizontal and a vertical polarization path of an object-to-be-tested into a first and a second high frequency signal; a phase retarder for delaying a phase of the first high frequency signal by 90 degrees to form a first high frequency signal with a phase delay of 90 degrees; a power splitter for receiving or synthesizing the first high frequency signal with the phase delay of 90 degrees and the second high frequency signal; and a high frequency signal transceiver for measuring power of the first high frequency signal with the phase delay of 90 degrees and the second high frequency signal and determining states of the horizontal and vertical polarization paths of the object-to-be-tested based on the power. Therefore, the testing system can speed up testing of the object-to-be-tested.
    Type: Application
    Filed: April 8, 2020
    Publication date: September 24, 2020
    Inventors: Bo-Siang Fang, Kuan-Ta Chen, Ying-Wei Lu, Chia-Chu Lai, Cheng-Tsai Hsieh