SQDfpgaVNAswitch

Switching module to expand the number of ports in a Vector Network Analyser. Specifically:

• This project takes a typical 4-port VNA with input and output triggers (e.g. Agilent N5232A, Keysight PNA-L series etc.) and multiplexes the output port into 3 ports.
• Thus, one can measure a full 3x3 s-parameter matrix in 3 rapid switching cycles (with the main bottleneck being the VNA acquisition time).
• The module operates via a simple serial USB COM port to a PC. It is thus, compatible with the drivers in SQDToolz.

The implementation utilises:

• DE0-Nano FPGA
• High speed RF-Lambda RFSP3TR0208G triple-throw RF switch
• USB COM port

Two documentation classes exist for this project:

• User Documentation
• Developer Documentation