Patent ID: 7081868
Filing Date: 2006-07-25
Classification: B60C,H01Q

Abstract:
1. A reception antenna of a tire pressure monitoring system, the system having a sensor for measuring internal temperature and pressure of at least one tire, a transmitter for modulating data measured by the sensor into data in an Ultra High Frequency (UHF) band, and transmitting the modulated data to an outside of the tire in a wireless manner, a receiver for receiving the measured data transmitted from the transmitter in a wireless manner, and a display unit for displaying the measured data received by the receiver on a liquid crystal display (LCD) screen to allow a diver to monitor the measured data, wherein: the reception antenna is implemented using a cable-type antenna connected to the receiver, the cable-type antenna enabling a mounting position of the antenna to be freely changed and improving a reception rate for the measured data about the temperature and pressure of a tire, that is modulated into the data in the UHF band and transmitted to the outside of the tire in a wireless manner by the transmitter; wherein the cable-type antenna comprises: a radiating leakage coaxial cable, which has grooves formed at regular intervals in a corrugated outer conductor, which surrounds a dielectric, and thus operates in a wide frequency band so that the antenna receives the measured data at the tire by a wireless transmission from the transmitter while forming a gain pattern with sufficient intensity regardless of the mounting position of the antenna; and a matching terminal for performing termination impedance matching when the radiating leakage coaxial cable receives the measured data.