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Method and apparatus for calibrating an envelope tracking system
US9118366B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9118366-B2 |
| Application number | US-201313798099-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 13, 2013 |
| Priority date | Sep 12, 2012 |
| Publication date | Aug 25, 2015 |
| Grant date | Aug 25, 2015 |
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Abstract
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A method of calibrating an envelope tracking system for a supply voltage for a power amplifier module within a radio frequency (RF) transmitter module of a wireless communication unit. The method includes, within at least one signal processing module of the wireless communication unit, applying a training signal having an envelope that varies with time to an input of the RF transmitter module, receiving at least an indication of instantaneous output signal values for the power amplifier module in response to the training signal, calculating instantaneous gain values based at least partly on the received output power values, and adjusting a mapping function between an instantaneous envelope of a waveform signal to be amplified by the power amplifier module and the power amplifier module supply voltage to achieve a constant power amplifier module gain.
First claim
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What is claimed is: 1. A method of calibrating an envelope tracking system for a supply voltage for a power amplifier module within a radio frequency (RF) transmitter module of a wireless communication unit; the method comprising, within at least one signal processing module of the wireless communication unit: calibrating a mapping function between at least one instantaneous envelope of a waveform signal to be amplified and the power amplifier module supply voltage by setting an e…
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Electricity · mapped topic
Electricity · mapped topic
- H04B1/0475Primary
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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- What does patent US9118366B2 cover?
- A method of calibrating an envelope tracking system for a supply voltage for a power amplifier module within a radio frequency (RF) transmitter module of a wireless communication unit. The method includes, within at least one signal processing module of the wireless communication unit, applying a training signal having an envelope that varies with time to an input of the RF transmitter module, …
- Who is the assignee on this patent?
- Mediatek Singapore Pte Ltd
- What technology area does this patent fall under?
- Primary CPC classification H04B1/0475. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Aug 25 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).