Patent ID: 11949381
Assignee: ICEYE OY
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. A method of operating a power amplifier supplying power to an antenna, the method comprising:
in a first mode of operation, supplying switched power to the power amplifier via a driver circuit and one or more switches to switch the supply of power to the power amplifier on and off under the control of a first periodic switching signal; and
in a second mode of operation, calibrating the power amplifier, wherein the calibrating comprises supplying voltage to the power amplifier via the same driver circuit and one or more switches under the control of a second switching signal comprising a pulse with a duration longer than the period of the first periodic switching signal,
wherein:
the one or more switches comprise a pair of switches arranged one each side of a power output to the amplifier between a power source and ground,
a capacitor is used to switch on the high side transistor, and
the capacitance of the capacitor is sufficient to keep the high side transistor switched on for the calibration pulse duration.