NI PXIE-3620

NI PXIE-3620 is an NI PXI Express RF upconverter and downconverter module used in the NI mmWave Transceiver System. NI identifies it both as a primary PXIe module and as the LO/IF module shared by the transmitter and receiver, placing it in the PXI baseband/IF portion of the system rather than as a passive accessory. In NI’s 71–76 GHz system documentation, the module is described as an 8.5 to 13.5 GHz I/Q (de)modulator.

For IF signal handling, NI specifies an IF output tuning range of 8.5 to 13.5 GHz with linear power from -40 to +7 dBm, and an IF input tuning range of 8.5 to 13.5 GHz with linear power from -25 to +20 dBm. NI also states that these IF interfaces are 50 Ω with SMA connectors. These details make the PXIe-3620 the RF/IF translation stage between baseband I/Q resources and the wider mmWave transceiver architecture.

The PXIe-3620 includes analog differential I and Q baseband ports that connect to the PXIe-3610 arbitrary waveform generator and PXIe-3630 digitizer in the NI mmWave Transceiver System. NI’s getting started documentation further confirms system-level interconnection context, including use of MMPX (m)-to-MMPX (m) cables when connecting the PXIe-3630 to the PXIe-3620 TX connectors. NI’s mmWave 15.3.1 Readme also explicitly lists the PXIe-3620 RF Upconverter and Downconverter Module among supported mmWave Transceiver System hardware.