The
high performance, wide
bandwidth multi-channel transceiver, integrating four RF sampling transmitter chains,
four RF sampling receiver chains, and two RF sampling
digitizing auxiliary chains (feedback paths). The high dynamic range of the
transmitter and receiver chains allows the device to generate and receive 3G, 4G,
and 5G signals from wireless base stations, while the wide bandwidth capability of
the
is designed for multi-band 4G
and 5G base stations.
Each receiver chain includes a 25-dB
range DSA (Digital Step Attenuator), followed by a 3-GSPS ADC (analog-to-digital
converter). Each receiver channel has an analog peak power detector and various digital power detectors to
assist an external or internal autonomous automatic gain controller, and RF overload
detectors for device reliability protection. The single or dual digital down converters (DDC) provide up to 600 MHz of combined signal
BW in dual DDC mode or 1200-MHz BW in single DDC mode. In TDD mode, the
receiver channel can be configured to dynamically switch between the traffic
receiver (TDD RX) and wideband feedback receiver (TDD FB), with the capability of
reusing the same analog input for both purposes.
Each transmitter chain includes a
single or dual digital up-converters (DUCs) supporting up to 2400 MHz for 2TX
or 1200 MHz BW for 4TX combined signal bandwidth. The output of the DUCs
drives a 12-GSPS DAC (digital-to-analog converter) with a mixed mode output option
to enhance 2nd or 3rd Nyquist operation. The DAC output includes a variable gain
amplifier (TX DSA) with 40-dB range and 1-dB analog and 0.125-dB digital steps.
The feedback path includes an 25-dB
range DSA driving a 3-GSPS RF sampling ADC, followed by a DDC with up to
1200 MHz bandwidth.
The
high performance, wide
bandwidth multi-channel transceiver, integrating four RF sampling transmitter chains,
four RF sampling receiver chains, and two RF sampling
digitizing auxiliary chains (feedback paths). The high dynamic range of the
transmitter and receiver chains allows the device to generate and receive 3G, 4G,
and 5G signals from wireless base stations, while the wide bandwidth capability of
the
is designed for multi-band 4G
and 5G base stations.
Each receiver chain includes a 25-dB
range DSA (Digital Step Attenuator), followed by a 3-GSPS ADC (analog-to-digital
converter). Each receiver channel has an analog peak power detector and various digital power detectors to
assist an external or internal autonomous automatic gain controller, and RF overload
detectors for device reliability protection. The single or dual digital down converters (DDC) provide up to 600 MHz of combined signal
BW in dual DDC mode or 1200-MHz BW in single DDC mode. In TDD mode, the
receiver channel can be configured to dynamically switch between the traffic
receiver (TDD RX) and wideband feedback receiver (TDD FB), with the capability of
reusing the same analog input for both purposes.
Each transmitter chain includes a
single or dual digital up-converters (DUCs) supporting up to 2400 MHz for 2TX
or 1200 MHz BW for 4TX combined signal bandwidth. The output of the DUCs
drives a 12-GSPS DAC (digital-to-analog converter) with a mixed mode output option
to enhance 2nd or 3rd Nyquist operation. The DAC output includes a variable gain
amplifier (TX DSA) with 40-dB range and 1-dB analog and 0.125-dB digital steps.
The feedback path includes an 25-dB
range DSA driving a 3-GSPS RF sampling ADC, followed by a DDC with up to
1200 MHz bandwidth.