公开(公告)号：US20210149038A1

公开(公告)日：2021-05-20

申请号：US17161891

申请日：2021-01-29

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Atsuyuki YUASA ,  Katsuhisa KASHIWAGI

IPC: G01S13/44 ,  G01S7/35

Abstract: A radar device includes plural transmit antennas, plural receive antennas, a local oscillator that oscillates a local signal, a transmit processor that sends transmit signals based on the local signal from the transmit antennas, a receive processor that outputs beat signals from the local signal and echo signals generated as a result of the transmit signals being reflected by a target and received by the receive antennas, and a signal processor that executes signal processing on the beat signals. The transmit processor sends the transmit signals from the plural transmit antennas at different timings and also simultaneously sends the transmit signals which are combinable with each other from the plural transmit antennas.

公开(公告)号：US20200217924A1

公开(公告)日：2020-07-09

申请号：US16808640

申请日：2020-03-04

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Katsuhisa KASHIWAGI ,  Atsuyuki YUASA

IPC: G01S7/35 ,  G01S13/931 ,  G01S13/58

Abstract: A radar apparatus and an automobile including the radar apparatus are provided. The radar apparatus may measure the elevation/declination angle of a target with high accuracy by using simple circuits at low cost without use of a detection circuit and an AD conversion circuit having high time resolution. A transmit antenna transmits transmit signal waves modulated through the multilevel FSK, and receive antennas receive reflected waves obtained by reflecting, off a target, the transmit signal waves which return. The multilevel FSK is used as a modulation method so that the beat frequency between the receive signal waves from the target and the transmit signal waves serves as the Doppler frequency. Thus, the elevation/declination angle φ of the target is calculated by a computing unit, not from the frequencies of the receive signal waves as in the related art, but from the frequency of the transmit signal waves.

公开(公告)号：US20150212194A1

公开(公告)日：2015-07-30

申请号：US14681163

申请日：2015-04-08

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hidenori OBIYA ,  Ryuken MIZUNUMA ,  Shinya MIZOGUCHI ,  Atsuyuki YUASA ,  Shinya HITOMI ,  Hisao HAYAFUJI

IPC: G01S7/02 ,  G01S13/02

CPC classification number: G01S7/02 ,  G01S7/038 ,  G01S13/02 ,  H04B1/525

Abstract: A reflected signal detector (12) detects the amplitude and the phase of a reflected signal and outputs detection signals. A control circuit (13) adjusts first control signals and second control signals on the basis of the detection signals. A first cancel signal output portion (9) adjusts a first cancel signal so that the first cancel signal has a phase opposite to that of the reflected signal and has the same amplitude as that of the reflected signal using the first control signals. A second cancel signal output portion (10) adjusts a second cancel signal so that the second cancel signal has a phase opposite to that of a leakage signal and has the same amplitude as that of the leakage signal using the second control signals. A combining portion (11) combines a reception signal including noise signals with the first and second cancel signals.

Abstract translation: 反射信号检测器（12）检测反射信号的幅度和相位，并输出检测信号。 控制电路（13）根据检测信号调整第一控制信号和第二控制信号。 第一消除信号输出部分（9）调整第一消除信号，使得第一消除信号具有与反射信号相反的相位，并且具有与使用第一控制信号的反射信号相同的幅度。 第二消除信号输出部分（10）调整第二消除信号，使得第二消除信号具有与泄漏信号相反的相位，并且具有与使用第二控制信号的泄漏信号相同的幅度。 组合部分（11）将包括噪声信号的接收信号与第一和第二消除信号组合。

公开(公告)号：US20200379086A1

公开(公告)日：2020-12-03

申请号：US16997605

申请日：2020-08-19

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Takuya MAEKAWA ,  Atsuyuki YUASA ,  Kazunari KAWAHATA

IPC: G01S7/41 ,  G01S7/35 ,  G01S7/02 ,  G01S13/42 ,  G01S13/931

Abstract: Provided is an object shape detection apparatus that can detect the shape of a raised or depressed portion on the surface of an object. In accordance with a comparison result obtained by a reflection intensity comparator with regard to intensity of a horizontally polarized wave component and a vertically polarized wave component of a reflected wave, the object shape determiner detects the shape of the raised portion and the shape of the depressed portion of a detection target object. The object locator detects the position of the raised portion and the position of the depressed portion of the detection target object by measuring the distance to the raised portion and the distance to the depressed portion of the detection target object detected by the object shape determiner.

公开(公告)号：US20150303987A1

公开(公告)日：2015-10-22

申请号：US14788918

申请日：2015-07-01

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Makoto YASUTAKE ,  Atsuyuki YUASA

IPC: H04B1/69 ,  H04L27/20 ,  H04B1/02

CPC classification number: H04B1/69 ,  H04B1/02 ,  H04B1/707 ,  H04L27/20 ,  H04L27/2035 ,  H04L2027/0018 ,  H04L2027/0051 ,  H04L2027/0083

Abstract: A microprocessor includes a memory, an input/output port and a switch controller. Transmission data, a spread code and an inverted code are stored in the memory. The switch controller generates a spread spectrum signal by calling up either of the spread code or the inverted code in accordance with a bit of the transmission data. A switch connected to the input/output port is switched on and off based on the spread spectrum signal. In addition, an antenna is connected to the input/output port via a coupler. An oscillation circuit includes a reference oscillator and a BPF and inputs a harmonic of a reference signal to the coupler as a carrier wave.

Abstract translation: 微处理器包括存储器，输入/输出端口和开关控制器。 发送数据，扩展码和反相码存储在存储器中。 开关控制器根据传输数据的位调用扩展码或反相码中的任何一个产生扩频信号。 连接到输入/输出端口的开关基于扩频信号而被接通和断开。 此外，天线通过耦合器连接到输入/输出端口。 振荡电路包括参考振荡器和BPF，并将参考信号的谐波作为载波输入到耦合器。