The X-WR90-3f is a recently introduced calibration kit for WR90 / WG16 / R100 waveguide at X-band (8.2 to 12.4 GHz). This support page will be expanded later to cover this recently introduced model in more details. Sorry it is so brief, but we will provide full support by email and phone, to enable you to use the X-WR90-3f waveguide calibration kit with almost any vector network analyzer capable of operation at X-band, and capable of waveguide calibration.
The VNA calibration kit includes all the components necessary to calibrate a VNA when the test ports are connected via cables and adapters to WR90 waveguide, which is also known as WG16 and R100. The kit includes a λ/4 (quarter wave) shim/spacer, a flush short, and a load. All components are new. Note, that no 'open' standard is supplied, because it is impossible to make a useful waveguide open, so an offset short is used. This provides a reflection standard which is approximately 180° different in phase from the flush short.
The following process is required for a single-port calibration.
For a two port calibration, the above should be repeated at the second port, then the two waveguide transitions joined for a zero length thru.