公开(公告)号：US20150070072A1

公开(公告)日：2015-03-12

申请号：US14476978

申请日：2014-09-04

Applicant: DENSO CORPORATION ,  WASEDA UNIVERSITY

Inventor： Toshihiko YOSHIMASU ,  Takayuki SHIBATA

IPC: H03D7/14

CPC classification number: H03D7/1458 ,  H03D7/1441

Abstract: A harmonic mixer includes first through third field effect transistors. A gate electrode of the first field effect transistor is supplied with a positive-phase signal of a first signal. A gate electrode of the second field effect transistor is supplied with a negative-phase signal of the first signal. A source electrode of the second field effect transistor is short-circuited with a source electrode of the first field effect transistor and is grounded. A source electrode of the third field effect transistor is connected to a terminal at which drain electrodes of the first field effect transistor and the second field effect transistor are short-circuited. A gate electrode of the third field effect transistor is supplied with a second signal. A drain electrode of the third field effect transistor outputs a signal.

Abstract translation: 谐波混频器包括第一至第三场效应晶体管。 第一场效应晶体管的栅电极被提供有第一信号的正相信号。 第二场效应晶体管的栅电极被提供有第一信号的负相位信号。 第二场效应晶体管的源电极与第一场效应晶体管的源电极短路并接地。 第三场效应晶体管的源极连接到第一场效应晶体管和第二场效应晶体管的漏电极短路的端子。 第三场效应晶体管的栅电极被提供第二信号。 第三场效应晶体管的漏电极输出信号。

公开(公告)号：US20160305840A1

公开(公告)日：2016-10-20

申请号：US15103032

申请日：2015-01-12

Applicant: DENSO CORPORATION

Inventor： Takayuki SHIBATA ,  Kouji OOYA

IPC: G01L23/10 ,  G01L19/06

CPC classification number: G01L23/10 ,  G01L19/0681 ,  G01L23/22

Abstract: In a combustion pressure sensor having built-in charge amplifier, signal line overheating and deterioration of detection accuracy is restricted. The combustion pressure sensor includes a sensor body that includes a piezoelectric element having one end connected to chassis ground through a housing and detects pressure in a combustion chamber of engine, and a charge amplifier that includes at least a voltage converting unit converting output of the sensor body into voltage signal and a reference voltage generating unit generating reference voltage supplied to the voltage converting unit and operates on power supplied from a signal processing unit disposed outside. The reference voltage generating unit includes a voltage generating circuit having a constant current circuit and a resistor connected in series. The voltage generating circuit has one end connected to power line extending from the signal processing unit, and the other end connected to the end of the piezoelectric element.

Abstract translation: 在具有内置电荷放大器的燃烧压力传感器中，限制了信号线过热和检测精度的劣化。 燃烧压力传感器包括传感器体，该传感器主体包括压电元件，该压电元件的一端通过外壳连接到机壳接地，并且检测发动机的燃烧室中的压力;以及电荷放大器，其至少包括电压转换单元， 基准电压产生单元产生提供给电压转换单元的参考电压，并且对从设置在外部的信号处理单元提供的电力进行操作。 参考电压产生单元包括具有串联连接的恒流电路和电阻器的电压产生电路。 电压产生电路的一端连接到从信号处理单元延伸的电力线，另一端连接到压电元件的端部。

公开(公告)号：US20160025580A1

公开(公告)日：2016-01-28

申请号：US14770207

申请日：2014-02-04

Applicant: DENSO CORPORATION

Inventor： Kouji OOYA ,  Kazuhiko KANO ,  Akihiko TESHIGAHARA ,  Shinji KASHIWADA ,  Takayuki SHIBATA ,  Inao TOYODA

IPC: G01L9/00

CPC classification number: G01L9/0025 ,  G01L9/008 ,  G01L19/0681 ,  G01L19/086 ,  G01L19/143

Abstract: An antenna unit having an antenna coil pattern is disposed in a casing. A sensor unit has a surface acoustic wave detecting element including a first sensing electrode that generates and receives a surface acoustic wave and a first reflector that reflects the surface acoustic wave, which are provided on a substrate configured of a piezoelectric material, and a sensor coil pattern electrically connected to the first sensing electrode and coupled to the antenna coil pattern. The sensor unit is disposed in a pressure receiving portion, and a signal is transmitted between the sensor unit and the antenna unit by wireless communication resulting from a coil coupling.

Abstract translation: 具有天线线圈图案的天线单元设置在壳体中。 传感器单元具有表面声波检测元件，其包括生成并接收表面声波的第一感测电极和设置在由压电材料构成的基板上的反射表面声波的第一反射器，以及传感器线圈 电连接到第一感测电极并耦合到天线线圈图案。 传感器单元设置在压力接收部分中，并且通过由线圈联接产生的无线通信在传感器单元和天线单元之间传输信号。