A simple and efficient waveguide calibration procedure for a vector network analyzer

Modern vector network analyzers (VNA) can be calibrated for measuring scatt ering parameters of waveguide circuits without the need for an expensive ki t of standard waveguide components. It is possible to specify the quality o f a low reflection load bu using a sliding matched lend of lower quality an d, therefore use it as a standard circuit. Similarly, the VNA can be used a s a transmitter/receiver for measuring geometrical parameters of a referenc e circuit from which a standard open circuit can be specified.