Recording VNA Calibration and Reference Planes

Question I started with

Before placing simulation and instrument results in one table, I drew the calibration plane and fixture boundary.

Recording VNA Calibration and Reference Planes — concept flow — I redrew the relationships before returning to the equations.

Connecting the concepts

One-port calibration corrects directivity, source match, and reflection tracking; two-port calibration also addresses transmission errors. SOLT and TRL are different methods chosen for the DUT and standards.

VNA
SOLT
TRL
reference plane
de-embedding

Equations and assumptions

I write the reference impedance, units, and linear-versus-decibel domain before substituting numbers.

S11 = b1 / a1 at the calibrated planeS21 = b2 / a1 with port 2 matched

Worked example

If a 20 mm fixture remains beyond the calibration plane, its phase and loss appear in the DUT result. Port extension can shift delay but does not remove every mismatch.

Recording VNA Calibration and Reference Planes — calculation relationship — This is my explanatory redraw, not an imported RFDH figure or a measurement result.

Connecting it to my coursework and projects

The published Cadence screens are simulation archives. Without VNA calibration logs, cables, connectors, and fixtures, I do not label them as fabricated-circuit measurements.

High-frequency engineering course hub

What I will check next

Changing sweep points and IF bandwidth changes noise and measurement time. I record original settings rather than smoothing a notch into a better-looking result.

Pages I read

Official references I checked

Keysight: Understanding the Fundamental Principles of Vector Network Analysis