Patents by Inventor Sadao Matsushima

Sadao Matsushima 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: 11187781
    Abstract: A pulse generating device of an in-vehicle radar configured to output a high frequency pulse including a main lobe and a side lobe includes a high frequency oscillator that generates a carrier wave of a predetermined frequency, an output variable device that adjusts an output of the high frequency oscillator, a power measuring unit that measures the output of the high frequency oscillator, a temperature measuring unit that measures an ambient temperature, a baseband pulse generating unit that generates a signal of a pulse shape, and a modulator that modulates the output of the high frequency oscillator with the signal of the pulse shape, and, when the ambient temperature is a first threshold value or less, the output or the pulse shape is adjusted so that the side lobe is a predetermined output or less.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: November 30, 2021
    Assignees: FURUKAWA ELECTRIC CO., LTD., FURUKAWA AUTOMOTIVE SYSTEMS INC.
    Inventors: Kei Takahashi, Taishi Kagimoto, Sadao Matsushima
  • Publication number: 20210033718
    Abstract: To detect an object present in the vicinity.
    Type: Application
    Filed: February 28, 2019
    Publication date: February 4, 2021
    Applicants: FURUKAWA ELECTRIC CO., LTD., FURUKAWA AUTOMOTIVE SYSTEMS INC.
    Inventors: Hiroyuki KOBAYASHI, Taishi KAGIMOTO, Tadataka WAKABISHI, Sadao MATSUSHIMA, Hajime NAMIKI, Jun MIURA, Tomoki KAWAMURA, Noriyuki SHOJI
  • Publication number: 20200072960
    Abstract: [OBJECT] To provide a radar device capable of detecting a position of a target in a direction orthogonal to a viewing angle. [ORGANIZATION] In a radar device which detects a target by using a radio wave, the radar device includes: a receiving array antenna (receiving array antenna 17) where a plurality of receiving antenna elements (first receiving antenna 17-1 to eighth receiving antenna 17-8) each having a predetermined length in a first direction are arranged to be disposed in a second direction almost orthogonal to the first direction; a dispersion part (dispersion part 31) which is disposed in a vicinity of the receiving array antenna, and dispersion properties of the radio wave change with respect to the first direction; and a detection part (control and process part 15) which detects the position of the target in the first direction based on the radio wave reflected by the dispersion part.
    Type: Application
    Filed: February 22, 2018
    Publication date: March 5, 2020
    Applicants: FURUKAWA ELECTRIC CO., LTD., FURUKAWA AUTOMOTIVE SYSTEMS INC.
    Inventors: Taishi KAGIMOTO, Hiroyuki KOBAYASHI, Takeo OKANIWA, Tadataka WAKABISHI, Sadao MATSUSHIMA
  • Publication number: 20190293754
    Abstract: A pulse generating device of an in-vehicle radar configured to output a high frequency pulse including a main lobe and a side lobe includes a high frequency oscillator that generates a carrier wave of a predetermined frequency, an output variable device that adjusts an output of the high frequency oscillator, a power measuring unit that measures the output of the high frequency oscillator, a temperature measuring unit that measures an ambient temperature, a baseband pulse generating unit that generates a signal of a pulse shape, and a modulator that modulates the output of the high frequency oscillator with the signal of the pulse shape, and, when the ambient temperature is a first threshold value or less, the output or the pulse shape is adjusted so that the side lobe is a predetermined output or less.
    Type: Application
    Filed: June 11, 2019
    Publication date: September 26, 2019
    Applicants: FURUKAWA ELECTRIC CO., LTD., FURUKAWA AUTOMOTIVE SYSTEMS INC.
    Inventors: Kei TAKAHASHI, Taishi KAGIMOTO, Sadao MATSUSHIMA
  • Patent number: 9423491
    Abstract: A radar device that transmits a high frequency signal and detects an object by a reflected wave that is reflected by the object includes a transmitting antenna that transmits the high frequency signal, a receiving antenna that receives a reflected wave that is transmitted by the transmitting antenna and reflected by the object, and a dummy antenna that attenuates a reflected wave that is reflected by a structure arranged on a transmission path of the high frequency signal. The dummy antenna is configured be selectable as an antenna having another function.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: August 23, 2016
    Assignees: Furukawa Electric Co., Ltd., Furukawa Automotive Systems Inc.
    Inventors: Yoshiyuki Ishida, Sadao Matsushima
  • Publication number: 20150378006
    Abstract: A radar device that transmits a high frequency signal and detects an object by a reflected wave that is reflected by the object includes a transmitting antenna that transmits the high frequency signal, a receiving antenna that receives a reflected wave that is transmitted by the transmitting antenna and reflected by the object, and a dummy antenna that attenuates a reflected wave that is reflected by a structure arranged on a transmission path of the high frequency signal. The dummy antenna is configured be selectable as an antenna having another function.
    Type: Application
    Filed: September 3, 2015
    Publication date: December 31, 2015
    Inventors: Yoshiyuki ISHIDA, Sadao MATSUSHIMA
  • Patent number: 9082785
    Abstract: A high-frequency circuit board capable of easily forming a bias line whose resonance frequency is sufficiently separated from operating frequency is provided. On a high-frequency circuit board 100, by electrically connecting a bias line 11 to a high-frequency circuit 10 using blind via holes 106 and 107, it is possible to limit the route that has a possibility of producing resonance only to the bias line connecting the ends 106a and 107a of the blind via holes 106 and 107 to the bias line 11. By adjusting the route length from the end 106a to the end 107a, it is possible to prevent production of resonance in the vicinity of the operating frequency.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: July 14, 2015
    Assignees: FURUKAWA ELECTRIC CO., LTD., FURUKAWA AUTOMOTIVE SYSTEMS INC.
    Inventors: Yoshiyuki Ishida, Sadao Matsushima, Toshihide Fukuchi
  • Patent number: 8643535
    Abstract: A radar device capable of removing noise signals before digital conversion and detecting an object with high precision by a simple configuration is provided. In a transmitting RF unit 110, a signal switch 141 is switched so that the noise signal generated by the operation of a first switch 111 passes through a signal delaying device 142. The signal switch 141 is switched so that the noise signal generated by the operation of a second switch 112 passes through a signal delaying device 143. Furthermore, the signal switch 141 is switched so that a baseband pulse signal obtained when the first switch 111 and the second switch 112 are operated at the same time passes through a signal delaying device 144. In a signal synthesizer 145, synthesizing is carried out so that the noise signals mixed in pulse signals are cancelled out.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: February 4, 2014
    Assignees: Furukawa Electric Co., Ltd., Furukawa Automotive Systems Inc.
    Inventors: Sadao Matsushima, Toshihide Fukuchi
  • Publication number: 20130000956
    Abstract: A high-frequency circuit board capable of easily forming a bias line whose resonance frequency is sufficiently separated from operating frequency is provided. On a high-frequency circuit board 100, by electrically connecting a bias line 11 to a high-frequency circuit 10 using blind via holes 106 and 107, it is possible to limit the route that has a possibility of producing resonance only to the bias line connecting the ends 106a and 107a of the blind via holes 106 and 107 to the bias line 11. By adjusting the route length from the end 106a to the end 107a, it is possible to prevent production of resonance in the vicinity of the operating frequency.
    Type: Application
    Filed: September 14, 2012
    Publication date: January 3, 2013
    Applicants: Furukawa Automotive Systems Inc., Furukawa Electric Co., Ltd.
    Inventors: Yoshiyuki ISHIDA, Sadao Matsushima, Toshihide Fukuchi
  • Patent number: 7596361
    Abstract: A low noise amplification circuit comprises a low noise amplifier and a filter coupled to the input terminal of the low noise amplifier. The low noise amplifier comprises an amplifying element and a matching input circuit coupled to the input terminal of the amplifying element. When gamma.sub.s shows a reflection factor in the case that signals flow from the input terminal of the amplifying element to the output terminal of the matching input circuit, impedance conversion for setting the gamma.sub.s at a desired value is made entirely or in part by means of setting the output impedance of the filter at the value different from that of characteristic impedance.
    Type: Grant
    Filed: May 30, 2006
    Date of Patent: September 29, 2009
    Assignees: The Furukawa Electric Co., Ltd., Denso Corporation
    Inventors: Sadao Matsushima, Toshihide Fukuchi, Yuji Nakagawa, Shiro Koide
  • Publication number: 20060270380
    Abstract: A low noise amplification circuit comprises a low noise amplifier and a filter coupled to the input terminal of the low noise amplifier. The low noise amplifier comprises an amplifying element and a matching input circuit coupled to the input terminal of the amplifying element. When gamma.sub.s shows a reflection factor in the case that signals flow from the input terminal of the amplifying element to the output terminal of the matching input circuit, impedance conversion for setting the gamma.sub.s at a desired value is made entirely or in part by means of setting the output impedance of the filter at the value different from that of characteristic impedance.
    Type: Application
    Filed: May 30, 2006
    Publication date: November 30, 2006
    Applicants: THE FURUKAWA ELECTRIC CO., LTD., DENSO CORPORATION
    Inventors: Sadao Matsushima, Toshihide Fukuchi, Yuji Nakagawa, Shiro Koide