Antenna system for narrowband communications systems and method of operation
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United States of America Patent
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Nov 25, 2003
Issued Date -
N/A
app pub date -
Jul 31, 2000
filing date -
Dec 31, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
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.
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