초록 ▼

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 pl

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).

대표청구항 ▼

A multi-channel wideband frequency transceiver comprising: a plurality of receive antennas for receiving radio frequency signals; a plurality of radio frequency converters coupled to each of the plurality of receive antennas and operable to convert the radio frequency signals to intermediate frequen

A multi-channel wideband frequency transceiver comprising: a plurality of receive antennas for receiving radio frequency signals; a plurality of radio frequency converters coupled to each of the plurality of receive antennas 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 switched digital down converter coupled to the analog-to-digital converters and operable for selecting one of the digital signals and converting the one of the digital signals to a baseband intermediate frequency signal; a plurality of channel processors coupled to the switched digital down converter for recovering one of a plurality of communication channels contained within the baseband intermediate frequency signal and for communicating the recovered communication channel to a network interconnect of a communication system; the plurality of channel processors being further operable to receive digital downlink communication signals from the network interconnect and for processing the digital downlink communication signals for transmission on one of the plurality of communication channels; a plurality of up converters/modulators respectively associated with each of the plurality of communication channels and connected to the channel processors for up converting and modulating the digital downlink communication signals to digital intermediate frequency signals; a plurality of digital summers connecting the up converters/modulators for summing the digital intermediate frequency signals into digital intermediate frequency signal sub-groups; a plurality of digital-to-analog converters for converting the digital intermediate frequency signal sub-groups into analog signals; an analog summer selectively connected to the digital-to-analog converters for summing a sub-set of the analog signals into an analog intermediate frequency signal; a radio-frequency up converter coupled to the analog summer for converting the analog intermediate frequency signal to a radio frequency signal; and a power amplifier coupled to the radio-frequency up converter for amplifying the radio frequency signal and for communicating the radio frequency signal to a transmit antenna.