RADIO FREQUENCY POWER MEASUREMENT

摘要

An unknown RF power is converted to a voltage by a detector 11. The voltage is converted to a number by a digitiser 12. A separate and fixed RF power reference 14 drives a second detector 15, whose voltage output is also converted to a number by the digitiser 12. The RF detectors are thermally coupled. Temperature variations in the RF power to voltage characteristic of the detector 11 are corrected by measuring the RF power reference 14 via the detector 15.