JP2004125810A5 - - Google Patents

Claims (5)

A structure of a millimeter wave unit in a radar device that transmits a frequency modulation signal, receives a signal reflected back from a target, and mixes it with a transmission signal to measure the distance from the beat signal to the target There,
The millimeter wave unit is composed of an electric circuit part, a base chassis, and an antenna,
The main part of the electric circuit unit that transmits the frequency modulation signal and mixes the reception signal received by the antenna with the transmission signal is configured by an integrated circuit, and the integrated circuit is mounted on the base chassis. ,
Electrically connecting a ground pattern of the integrated circuit to the base chassis;
Of the electric circuit portion, a circuit other than the main portion is mounted on an electric circuit board and attached to the periphery of the base chassis,
A structure of a millimeter wave unit, wherein at least a portion of the ground pattern of the electric circuit board in the vicinity of the integrated circuit is electrically connected to the base chassis.   The structure of the millimeter wave unit according to claim 1, wherein the electric circuit board and the base chassis are attached via a conductive adhesive.   The site | part which opposes the said electroconductive adhesive material among the ground patterns in the surface on the opposite side to the attachment surface to the said base chassis of the said electric circuit board was connected by the through hole. The structure of the millimeter wave unit.   The mounting portion of the electric circuit board of the base chassis is depressed by a predetermined thickness to form a stepped portion, and a step between the surface of the electric circuit board attached to the stepped portion and the surface of the integrated circuit mounted on the base chassis. The structure of the millimeter wave unit according to any one of claims 1 to 3, wherein the structure is reduced. A radar apparatus including a millimeter wave unit including a mixer that transmits a frequency modulation signal, receives a signal reflected back from a target, and generates a beat signal obtained by mixing with a transmission signal;
  The millimeter wave unit is composed of an electric circuit part, a base chassis, and an antenna,
  Of the electric circuit portion, the main portion for transmitting the frequency modulation signal and mixing the reception signal received by the antenna with the transmission signal is constituted by an integrated circuit, and this integrated circuit is mounted on the base chassis. ,
  Electrically connecting a ground pattern of the integrated circuit to the base chassis;
  Of the electric circuit portion, a circuit other than the main portion is mounted on an electric circuit board and attached to the periphery of the base chassis,
  A radar apparatus comprising: a millimeter wave unit that electrically connects at least a portion of the ground pattern of the electric circuit board in the vicinity of the integrated circuit to the base chassis.