MULTI-WAY DOHERTY AMPLIFIER

• US 20100188147A1
• Filed: 09/02/2008
• Published: 07/29/2010
• Est. Priority Date: 09/03/2007
• Status: Active Grant

• Current Assignee: Ampleon Netherlands B.V. (Ampleon Coöperatief UA)
• Original Assignee: NXP B.V. (NXP Semiconductors NV)
• Inventors: Van Der Zanden, Josephus H. B., Blednov, Igor
• Granted Patent: US 9,325,280 B2
• Time in Patent Office: Days
• US Class Current: 330/124.R
• CPC Class Codes: H03F 1/0288 using a main and one or several auxiliary peaking amplifiers whereby the load is connected to the main amplifier using an impedance inverter, e.g. Doherty amplifiers
• CPC Class Codes: H03F 1/08 Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements wide-band amplifiers with inter-stage coupling networks incorporating these impedances H03F1/42
• CPC Class Codes: H03F 2200/408 the output amplifying stage of an amplifier comprising three power stages

Abstract

An electronic circuit has a multi-way Doherty amplifier. The multi-way Doherty amplifier comprises a two-way Doherty amplifier with a main stage and a first peak stage that are integrated in a semiconductor device; and at least one further peak stage implemented with a discrete power transistor.

Claims

1. An electronic circuit with a multi-way Doherty amplifier, wherein the multi-way Doherty amplifier comprises:

a two-way Doherty amplifier comprising a main stage and a first peak stage that are integrated in a semiconductor device; and

at least one further peak stage implemented in a separate semiconductor device.

2. The circuit of claim 1, wherein the further peak stage is implemented with a discrete power transistor.

3. The circuit of claim 1, wherein the semiconductor device and the separate semiconductor device are arranged together on a metal flange of a push-pull package.

4. The device of claim 1, comprising an additional further peak stage implemented in a further separate semiconductor device, wherein the further peak stage and the additional further peak stage have different sizes.