Thermal isolation around the RF load cuts parasitic heat loss, so more RF power heats the coolant for more accurate calorimetric measurement.
A solenoid control module measures current parameters to determine switch status and detect obstructions.
A microfabricated calorimeter measures RF power using a thermal medium and variable low-frequency bias to calculate average source power.
An RF calorimeter uses an integrated low-frequency reference source and high thermal efficiency load for precise power measurement.