| 摘要 |
A receiving antenna for receiving tire pressure signal which is fixed on the chassis of a car consists of a pedestal, a circuit board and a cover. The circuit board includes a substrate which is fixed on the chassis and whose topside is one centimetre far away from the underside of the pedestal and a receiving circuit which is made of metal and is mounted on the topside of the substrate. The receiving circuit includes a receiving member which is the rectangular shape circled from inside to outside for preconcerted distance and is located on one side of the topside of the substrate, an extending member which extends from the outer end of the receiving member to the other side of the topside of the substrate for preconcerted distance, and connecting member which extends from the extending member to the opposite side of the receiving member, and the width of the extending member is smaller than the width of the connecting member. The cover covers the pedestal to occlude the circuit board between the cover and the pedestal to improve the accuracy of the receiving tire pressure signal. |
