Leistungsdetektor

Details

Veröffentlichungs-Nr.

EP4737914

Anmeldetag

24. Juni 2024

Veröffentlichung

2. Januar 2025

Rechtsraum

EP

Abstract

A power detector according to an aspect of the present invention includes a main current mirror circuit that outputs a detection current indicating power of a high-frequency signal from an output end, a reference current mirror circuit that is the same as the main current mirror circuit, a current mirror circuit for connection that has an input end connected to an output end of the reference current mirror circuit and has an output end connected to the main output end to output a reference current, and a differential amplifier that generates a power detection signal based on an input voltage of an initial-stage transistor, to which the high-frequency signal is input, in the main current mirror circuit and an input bias voltage of a corresponding transistor, which corresponds to the initial-stage transistor, in the reference current mirror circuit, in which the input bias voltage of the initial-stage transistor in the main current mirror circuit is set based on a first reference current, and the input bias voltage of the corresponding transistor in the reference current mirror circuit is set based on a total current of a deviation current between the detection current and the reference current and a second reference current.

Anmelder

Firma

Fujikura Ltd.

Land

🇯🇵 Japan