WIRELESS DATA COMMUNICATION MODULE HAVING OUTDOOR AND INDOOR ANTENNA THROUGH WIRELESS DATA COMMUNICATION

摘要

PURPOSE: A wireless data communication module is provided to allow a wireless data communication module to selectively use an antenna having a function matching with a wireless communication purpose.;CONSTITUTION: A wireless data communication module includes an outer vehicle antenna(9) and an inner vehicle antenna(10). An RF(Radio Frequency) switch(8) selects the outer vehicle antenna or the inner vehicle antenna by a control signal of a CPU. The RF switch connects the selected antenna to a duplexer(7). An LNA(Low Noise Amplifier) removes a noise of the received signal.;COPYRIGHT KIPO 2012