ANTENNA SYSTEM FOR NARROWBAND COMMUNICATIONS SYSTEMS AND METHOD OF OPERATION

摘要

There is disclosed an improved base station for communicating with communication units in a wireless messaging system. According to an advantageous embodiment, the base station comprises: 1) a transmitter that is capable of transmitting messages to the communication units in a forward-channel having a first frequency range; 2) a receiver that is capable of receiving messages from the communication units in a reverse-channel having a second frequency range; and 3) an antenna that is capable of transmitting the forward-channel messages at a first angle of electrical downtilt below the horizon and receiving the reverse-channel messages at a second angle of electrical downtilt, wherein the second angle of electrical downtilt is less than the first angle of electrical downtilt.