Waveguide Considerations; Introduction; Setup Considerations - Anritsu MS2024B Manual

VNA Measurements

4-6 Waveguide Considerations

4-6 Waveguide Considerations

Introduction

Only the MS20xxC VNA Master models accommodates waveguide measurements in addition
to the previously discussed coaxial measurements.

Setup Considerations

The primary difference between waveguide and coax measurements is the calibration. Coax is
typically calibrated by using an open, short, load, and through line. Waveguide calibration
components do not include an open because the open end of a waveguide is actually an
effective radiator and does not reflect much of the signal back to the test port. Offset shorts
are typically used to replace the open. Short, offset-Short, Load, Through (SSLT) is a common
waveguide calibration that is supported by the VNA Master. Triple offset short (SSST) is
another calibration option. Because this calibration avoids having a load standard, it can lead
to better ultimate directivity. It is, however, more band-limited and is more susceptible to
wear on the calibration components. Also refer to section "Calibration Considerations"
on page 4-16.
Vector Network Analyzer MG PN: 10580-00289 Rev. K 4-13