Multi-channel digital transceiver and method
First Claim
1. A multi-channel digital receiver comprising:
- a plurality of antennae for receiving radio frequency signals;
a plurality of radio frequency converters each coupled to one of the plurality of antennae and operable to convert the radio frequency signals to intermediate frequency signals;
a plurality of analog-to-digital converters coupled to each of the radio frequency converters for converting the intermediate frequency signals to digital signals;
a plurality of switched digital down converters coupled to the analog-to-digital converters and operable for coupling to receive one of the digital signals and converting the digital signal to a baseband intermediate frequency signal; and
a plurality of channel processors coupled to the plurality of switched digital down converters for recovering one of a plurality of communication channels contained within the baseband intermediate frequency signal, the plurality of channel processors being operable to select one of the plurality of digital down converters for coupling to one of the plurality of analog-to-digital converters.
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Accused Products
Abstract
A multi-channel digital transceiver (400) receives uplink radio frequency signals and converts these signals to digital intermediate frequency signals. Digital signal processing, including a digital converter module (426), is employed to select digital intermediate frequency signals received at a plurality of antennas (412) and to convert these signals to baseband signals. The baseband signals are processed to recover a communication channel therefrom. Downlink baseband signals are also processed and digital signal processing within the digital converter module (426) up converters and modulates the downlink baseband signals to digital intermediate frequency signals. The digital intermediate frequency signals are converted to analog radio frequency signals, amplified and radiated from transmit antennas (420).
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Citations
31 Claims
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1. A multi-channel digital receiver comprising:
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a plurality of antennae for receiving radio frequency signals; a plurality of radio frequency converters each coupled to one of the plurality of antennae and operable to convert the radio frequency signals to intermediate frequency signals; a plurality of analog-to-digital converters coupled to each of the radio frequency converters for converting the intermediate frequency signals to digital signals; a plurality of switched digital down converters coupled to the analog-to-digital converters and operable for coupling to receive one of the digital signals and converting the digital signal to a baseband intermediate frequency signal; and a plurality of channel processors coupled to the plurality of switched digital down converters for recovering one of a plurality of communication channels contained within the baseband intermediate frequency signal, the plurality of channel processors being operable to select one of the plurality of digital down converters for coupling to one of the plurality of analog-to-digital converters. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus for receiving radio frequency communications comprising:
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a plurality of antennae for receiving radio frequency signals; means for converting the radio frequency signals to intermediate frequency signals; means for converting the intermediate frequency signals to digital signals; means for digitally down converting one of the digital signals to a baseband intermediate frequency signal, the means for digitally down converting comprises a plurality of digital down converters, each being coupled to the means for converting the intermediate frequency signals to digital signals and including means for coupling to one of the digital signals; and means for processing the baseband intermediate frequency signal operable to select one of the plurality of digital down converters for receiving one of the digital signals from the means for converting the intermediate frequency signals, for receiving a baseband intermediate frequency signal from the means for digitally down converting, and to recover a communication channel contained therein. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method of receiving radio frequency communications comprising the steps of:
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receiving radio frequency signals at a plurality of antennae; converting the radio frequency signals to intermediate frequency signals; converting the intermediate frequency signals to digital signals; digitally down converting one of the digital signals to a baseband intermediate frequency signal; processing the baseband intermediate frequency signal to recover one of a plurality of communication channels contained therein; and selecting one of a plurality of digital down converters for receiving one of the digital signals. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31)
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Specification