Verstärkerschaltung und Zugehöriges Verfahren

Details

Veröffentlichungs-Nr.

EP4790894

Anmeldetag

26. Januar 2026

Veröffentlichung

12. August 2026

Rechtsraum

EP

Abstract

An amplifier circuit based on Doherty amplifier architecture comprises a first signal splitter (13₁, 100₁) coupled to an input pre-amplifier (14) and configured to receive an input signal (RF_IN). The first signal splitter (13₁, 100₁) comprises a first passive splitter network (13₁) and a first splitter amplifier (100₁). The first passive splitter network (13₁) is configured to forward a first portion (α_M) of the input signal (RF_IN) towards a first amplifier (11) and a second portion (1-α_M) of the input signal (RF_IN) towards the first splitter amplifier (100₁). One or more secondary signal splitters (300) are provided, wherein the or each secondary signal splitter (300) is configured to receive a respective input signal coming from the first splitter amplifier (100₁) in the first signal splitter (13₁, 100₁) and comprises a passive secondary splitter network (300) configured to forward a first portion (α_A1) of the respective input signal towards a respective secondary amplifier (21) and a second portion (1-α_A1) of the respective input signal towards a respective further secondary amplifier (31). Combiner circuitry (200) provides at an output node (RF_OUT) an output signal resulting from a combination of an output signal from the first amplifier (11), the respective secondary amplifier (21), and the respective further secondary amplifier (31).

Anmelder

Firma

STMicroelectronics International N.V.

Land

🇨🇭 Schweiz