首页>
外国专利>
METHOD AND DEVICE FOR THE PREDICTABLE MANAGEMENT OF DIVERSITY ANTENNAS IN THE EVENT OF A SIGNAL FAILURE
METHOD AND DEVICE FOR THE PREDICTABLE MANAGEMENT OF DIVERSITY ANTENNAS IN THE EVENT OF A SIGNAL FAILURE
展开▼
机译:发生信号故障时可预测地管理多样性天线的方法和设备
展开▼
页面导航
摘要
著录项
相似文献
摘要
A low-cost diversity antenna switching system and method is realized by controlling bias voltages on PIN diodes. By increasing the reverse bias voltage impressed upon a PIN diode, an RF signal impressed upon the diode is increasingly attenuated. As the PIN diode is forward biased to conduct in the forward direction, RF attenuation decreases. Two or more PIN diodes are used to increasingly attenuate signals from one antenna as attenuation of signals from another antenna is gradually decreased. The progression of the bias voltages is accomplished using a microprocessor that monitors a received signal strength indicator (RSSI) signal from a radio receiver. The RSSI is used to control which of two antennas are coupled into the receiver by predicting a signal fade.
展开▼