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Systems, methods and devices for digital multilevel envelope tracking

An envelope tracking and digital control technology, applied in the field of envelope tracking, can solve problems such as lower efficiency, narrow bandwidth application, and increased solution cost

Active Publication Date: 2018-10-16
INTEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the bandwidth limitation of DC-DC converters, conventional power supply control schemes may be limited to narrow bandwidth applications (e.g., a few MHz)
ET solutions today can include "hybrid" architectures with DC-DC and fast linear regulators, resulting in complex systems that reduce efficiency
Additionally, the systems of these schemes include external components such as inductors, which add to the cost of the solution

Method used

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  • Systems, methods and devices for digital multilevel envelope tracking
  • Systems, methods and devices for digital multilevel envelope tracking
  • Systems, methods and devices for digital multilevel envelope tracking

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0062] Example 1 is a system for envelope tracking, the system including a digital control assembly configured to generate a digital control for switching a resistor between a power amplifier and a selected one of a plurality of supply voltages code in order to generate the envelope voltage supplied to the power amplifier. The driver assembly is configured to selectively provide one of the plurality of supply voltages to generate an envelope voltage to the power amplifier based on the digital control code.

example 2

[0063] Example 2 includes the subject matter of Example 1, wherein the digital control assembly is further configured to switch from a first supply voltage to a second supply voltage of the plurality of supply voltages according to the digital control code, wherein the first supply voltage and the second supply voltage are different from each other .

example 3

[0064] Example 3 includes the subject matter of any of Examples 1 and 2, including or omitting optional elements, and further comprising a plurality of transistors configured to operate based on a combination of one or more activated transistors selected according to a digital control code. Define the resistance.

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Abstract

The present disclosure relates to digital multilevel envelope tracking for wide bandwidth signals. Perform multilevel supply voltage digital envelope tracking for wide bandwidth signals. The digital control component generates digital control code that facilitates switching of resistor values ​​of one or more resistors coupled between the power amplifier and supply voltages of the plurality of supply voltages. The driver assembly supplies an envelope voltage of a plurality of supply voltages of the power amplifier according to the digital control code.

Description

technical field [0001] The present disclosure relates to envelope tracking for wide bandwidth signals, and more particularly to digital multilevel envelope tracking. Background technique [0002] High-efficiency power amplifiers (PAs) provide valuable solutions in mobile wireless communication devices. With modern wireless systems, the modulation format has a high envelope peak-to-average ratio (PAR) and the linear PA has low average efficiency. Power supply control schemes such as envelope tracking provide a high probability of high average efficiency operation for high PAR signals (eg, up to a factor of two). However, due to the bandwidth limitation of DC-DC converters, conventional power supply control schemes may be limited to narrow bandwidth applications (eg, a few MHz). ET solutions today can include "hybrid" architectures with DC-DC and fast linear regulators, resulting in complex systems that reduce efficiency. In addition, the systems of these solutions include ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03F1/07H03F1/32H03F3/20
CPCH03F1/025H03F1/0233H03F3/21H03F2200/102
Inventor 伊曼纽尔·科恩
Owner INTEL CORP
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