Antenna status remote monitoring system
First Claim
Patent Images
1. An antenna monitoring unit comprising:
- an antenna having a resistor connected to ground;
a monitoring module;
a DC injector for injecting a DC signal into the antenna, wherein the antenna is DC isolated from an RF transmission line through the DC injector;
the monitoring module having a saved code associated with the monitoring module which receives a DC coded signal transmitted along the RF transmission line and compares the received DC coded signal with the saved code.
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Abstract
An antenna monitoring unit for monitoring an RF transmission line and RF signal path to an antenna unit used in a distributed antenna system in a structure. The antenna is DC isolated from the RF transmission line through a current injector, allowing testing by sending a code from a base station to a remote antenna location and using a monitoring module to confirm reception of the code and transmit data to the base station relating to the antenna unit.
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Citations
12 Claims
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1. An antenna monitoring unit comprising:
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an antenna having a resistor connected to ground; a monitoring module; a DC injector for injecting a DC signal into the antenna, wherein the antenna is DC isolated from an RF transmission line through the DC injector; the monitoring module having a saved code associated with the monitoring module which receives a DC coded signal transmitted along the RF transmission line and compares the received DC coded signal with the saved code. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for monitoring an antenna used in an antenna system comprising the steps of:
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connecting an RF path of an antenna to ground through a resistor; connecting the RF path of the antenna to a RF transmission line through a capacitor; connecting a monitoring module to the RF path of the antenna through a first inductor; injecting a DC signal into the RF path of the antenna; measuring the DC signal; comparing the DC signal to a stored value; receiving a DC coded signal transmitted along an RF transmission line; and comparing the received DC coded signal with a saved code associated with the monitoring module. - View Dependent Claims (8, 9)
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10. In a distributed antenna system including a transceiver connected to a building-wide distributed antenna system having a plurality of antennas, an antenna monitoring unit comprising:
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an antenna; a current injector coupled to the antenna and to an RF transmission line; wherein the antenna is DC isolated from the RF transmission line through the current injector; a monitoring module coupled to the current injector; wherein a master controller transmits a DC coded signal to the monitoring module via the RF transmission line, and the monitoring module compares the DC coded signal with saved information to determine if the DC coded signal matches the saved information and the monitoring module transmits a confirmation signal to the master controller when the DC coded signal is determined to match the saved information. - View Dependent Claims (11, 12)
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Specification