Apparatus and methods for envelope tracking
US-8981847-B2 · Mar 17, 2015 · US
Bi-directional power supply signal based linear amplifier
US9178472B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9178472-B2 |
| Application number | US-201414176611-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 10, 2014 |
| Priority date | Feb 8, 2013 |
| Publication date | Nov 3, 2015 |
| Grant date | Nov 3, 2015 |
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Abstract
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Circuitry, which includes a linear amplifier, is disclosed. The linear amplifier has a linear amplifier output and includes an input amplifier stage and an output amplifier stage. The output amplifier stage at least partially provides an envelope power supply voltage to a radio frequency (RF) power amplifier (PA) via an envelope power supply output using a selected one of a group of linear amplifier power supply signals. The group of linear amplifier power supply signals includes at least a first bi-directional power supply signal. The input amplifier stage selects the one of the group of linear amplifier power supply signals based on the envelope power supply voltage and a setpoint of the envelope power supply voltage.
First claim
Opening claim text (preview).
What is claimed is: 1. Circuitry comprising: an output amplifier stage configured to at least partially provide an envelope power supply voltage to a radio frequency (RF) power amplifier (PA) via an envelope power supply output using a selected one of a plurality of linear amplifier power supply signals, such that the plurality of linear amplifier power supply signals includes at least a first bi-directional power supply signal; and an input amplifier stage configured to select…
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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 US9178472B2 cover?
- Circuitry, which includes a linear amplifier, is disclosed. The linear amplifier has a linear amplifier output and includes an input amplifier stage and an output amplifier stage. The output amplifier stage at least partially provides an envelope power supply voltage to a radio frequency (RF) power amplifier (PA) via an envelope power supply output using a selected one of a group of linear ampl…
- Who is the assignee on this patent?
- Rf Micro Devices Inc
- What technology area does this patent fall under?
- Primary CPC classification H03F1/0222. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Nov 03 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).