Guidance on the use of coaxial connectors in radio frequency and microwave circuits

It is suggested that coaxial connectors are widely misused and their electrical and mechanical performance taken for granted. Coaxial connectors are often the most mistreated part of a measurement system. The author deals with the following topics associated with the use of coaxial connectors: connector repeatability; repeatability assessment; standard specifications for coaxial connectors; interface dimensions and gauging; and connector cleaning. It is recommended that all instruments fitted with connectors submitted for calibration should be adequately tested to ensure compliance to their mechanical specifications. All terminations mismatches, inter-series connectors and adaptors, etc., should also be tested. Calibration work should not be commenced if a connector is found to be outside the mechanical compliance limits.<>