Method and system for radio frequency/fiber optic antenna interface
First Claim
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1. An antenna system for receiving radio frequency signals and transmitting radio frequency signals over fiber optic cables comprising:
- an antenna for receiving radio frequency transmissions;
an interface box coupled to the antenna for converting a radio frequency signal to a fiber optic signal;
a fiber optic cable coupled to the interface box for transmitting the fiber optic signal;
a fiber optic converter coupled to the interface box by the fiber optic cable and operable to convert the fiber optic signal to the radio frequency signal; and
a communication base station coupled to the fiber optic converter operable to receive the radio frequency signal from the fiber optic converter and to transmit the radio frequency signal.
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Abstract
An antenna system for use with cellular and other radio frequency communications is disclosed. The system includes an antenna for receiving radio frequency transmissions as well as an interface box for converting radio frequency signals to fiber optic signals. The fiber optic signals are then transmited along fiber optic cables, eliminating the need for heavy coaxial cables. The fiber optic signal is converted to a radio frequency signal by a converter. Then, a communication base station receives the radio frequency signal from the converter and transmits that signal.
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Citations
20 Claims
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1. An antenna system for receiving radio frequency signals and transmitting radio frequency signals over fiber optic cables comprising:
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an antenna for receiving radio frequency transmissions;
an interface box coupled to the antenna for converting a radio frequency signal to a fiber optic signal;
a fiber optic cable coupled to the interface box for transmitting the fiber optic signal;
a fiber optic converter coupled to the interface box by the fiber optic cable and operable to convert the fiber optic signal to the radio frequency signal; and
a communication base station coupled to the fiber optic converter operable to receive the radio frequency signal from the fiber optic converter and to transmit the radio frequency signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A communication interface device comprising:
an uplink path operable to receiving a radio frequency signal the uplink path comprising;
a band pass filter operable to filter a radio frequency signal;
a low noise amplifier coupled to the band pass filter for amplifying the radio frequency signal; and
a first radio frequency fiber optic converter operable to convert the amplified radio frequency signal to a fiber optic signal. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 19)
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18. A method for sending a radio frequency signal over a fiber optic cable comprising:
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receiving a radio frequency signal at an antenna included as part of an integrated antenna unit;
filtering the radio frequency signal using a filter integrated with the antenna unit;
amplifying the radio frequency signal using an amplifier integrated with the antenna unit;
converting the radio frequency signal to a fiber optic signal using a radio frequency to fiber optic converter integrated with the antenna unit.
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20. An integrated fiber optic antenna comprising:
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an uplink path operable to receive a radio frequency signal, convert it to a fiber optic signal and output it to a fiber optic cable;
a downlink path operable to receive a fiber optic signal, convert it to a radio frequency signal and output it to an antenna.
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Specification