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Doherty power amplifier, and method and device for improving power amplification efficiency of Doherty power amplifier
US8994450B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8994450-B2 |
| Application number | US-201414289295-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 28, 2014 |
| Priority date | Nov 28, 2011 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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Abstract
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One aspect of the present invention provides a method for improving power amplification efficiency of a Doherty power amplifier. The method is applied to a Doherty power amplifier that has two paths of Doherty circuit units connected in parallel. The method includes: when output power of the Doherty power amplifier is within a low out power range, adjusting, by a bias circuit, gate voltages of main power amplifiers and peak power amplifiers in the two paths of Doherty circuit units connected in parallel, in order to cause the peak power amplifiers to be in an off state, and the main power amplifiers in the two paths of Doherty circuit units connected in parallel to be in a main power amplification state and a peak power amplification state respectively.
First claim
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What is claimed is: 1. A method for improving power amplification efficiency of a Doherty power amplifier, wherein the method is applied to the Doherty power amplifier that has two paths of Doherty circuit units connected in parallel, each of the Doherty circuit units comprises a main power amplifier and a peak power amplifier, the main power amplifier and the peak power amplifier are connected in parallel, and the method comprises: when output power of the Doherty power amplifier…
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Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US8994450B2 cover?
- One aspect of the present invention provides a method for improving power amplification efficiency of a Doherty power amplifier. The method is applied to a Doherty power amplifier that has two paths of Doherty circuit units connected in parallel. The method includes: when output power of the Doherty power amplifier is within a low out power range, adjusting, by a bias circuit, gate voltages of …
- Who is the assignee on this patent?
- Huawei Tech Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H03F3/245. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 31 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).