Temperature compensated power detector

Details Temperature compensated power detector Temperature compensated power detector

G - Physics

01

R

G01R 21/14 (2006.01) G01R 21/10 (2006.01) H03F 1/34 (2006.01) H03G 3/00 (2006.01)

Patent

CA 2298926

A temperature compensated power detector generally comprises a detector circuit portion, which includes a detector diode, and a temperature compensation circuit portion, which includes a temperature compensation diode, that is operably connected to the detector circuit portion. The detector diode and the temperature compensation diode are connected in DC series with each other and develop substantially identical voltage drops. The detector circuit portion operates to detect a voltage from a power input. However, the detected voltage is subject to alteration due to temperature variations. The temperature compensation circuit portion develops a voltage that is also subject to alteration due to temperature variations. The temperature altered voltage of the temperature compensation circuit portion is used to cancel out the temperature altered voltage of the detector circuit portion allowing the power detector to produce a true voltage output.

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