Patent ID: 7558536
Filing Date: 2009-07-07
Classification: G01S,G08G,H01Q

Abstract:
1. A sensor for obtaining vehicular traffic data, the sensor comprising: a housing having a front surface; an antenna plate disposed within the housing for transmitting radiation to a vehicle through the front surface and for receiving the radiation reflected back from the vehicle through the front surface, the antenna plate having an antenna ground surface and a radiating surface; a transceiver circuit plate disposed within the housing for electrically driving the antenna plate, the transceiver circuit plate having a component side for supporting circuit components and a circuit ground side for grounding the circuit components; a processor unit for driving and processing electrical signals from the transceiver circuit plate to obtain vehicular traffic data; wherein the antenna ground surface is between the radiating surface and the transceiver circuit plate; wherein the housing includes a first component and a second component attached together at a seal plane, the seal plane being substantially perpendicular to the radiating surface, and wherein the first component and the second component are attached together at a first seal surface and a second seal surface, the first seal surface being substantially parallel to the seal plane, and the second seal surface being oriented at a non-zero angle relative to the seal plane.