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Digital transmitter and method for compensating for the mismatch of the digital transmitter

A transmitter, digital technology, used in digital-to-analog converters, digital/coded signal control, amplifiers with semiconductor devices/discharge tubes, etc. Low area and power consumption, precise and high-resolution effects

Inactive Publication Date: 2018-02-09
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a digital transmitter and a method for compensating the mismatch of the digital transmitter, so as to solve the problem caused by the area mismatch between the unit circuits of the digital transmitter in the prior art

Method used

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  • Digital transmitter and method for compensating for the mismatch of the digital transmitter
  • Digital transmitter and method for compensating for the mismatch of the digital transmitter
  • Digital transmitter and method for compensating for the mismatch of the digital transmitter

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Embodiment Construction

[0038] Certain terms are used throughout the specification and following claims to refer to particular elements. It should be understood by those skilled in the art that hardware manufacturers may refer to the same element by different terms. This description and the following claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a criterion for distinguishing. The "comprising" mentioned throughout the specification and subsequent claims is an open term, so it should be interpreted as "including but not limited to". In addition, the term "coupled" here includes any direct and indirect electrical connection means, therefore, if it is described in the text that a first device is coupled to a second device, it means that the first device can be directly electrically connected to the second device. The second device, or indirectly electrically connected to the second device through other devices or connect...

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Abstract

The present invention provides a digital transmitter and a method for compensating the mismatch of the digital transmitter. The digital transmitter includes: a plurality of conversion elements for generating a plurality of conversion signals according to a plurality of digital input signals; A compensation element is used to generate at least one compensation signal according to the plurality of digital input signals; and a combination circuit is used to output an amplified output signal according to the plurality of conversion signals and the at least one compensation signal. The invention also provides a method for compensating a digital transmitter. The method includes: using a plurality of conversion elements to generate a plurality of conversion signals according to a plurality of digital input signals; generating at least one compensation signal according to the plurality of digital input signals; and generating at least one compensation signal according to the plurality of conversion signals and the at least one compensation signal to output an amplified output signal. The present invention can effectively solve the non-linear problem caused by the mismatch between the areas of multiple conversion elements.

Description

technical field [0001] The present invention provides a digital transmitter and a method for compensating the mismatch of the digital transmitter, especially a low-noise, low-cost digital transmitter and related methods. Background technique [0002] In a wireless communication system, using a digital transmitter to digitally amplify and transmit a radio frequency signal can save most of the area, and can also improve the efficiency of the transmitter. In general, there are currently two ways of implementing a digital transmitter. The first way is temperature coding (Thermo-coding), and the second way is binary coding (Binary-coding). Taking the temperature-encoded digital transmitter as an example, its output power is synthesized by multiple unit powers output by multiple unit circuits. Therefore, a temperature-encoded digital transmitter would require a large number of unit circuits to generate an output signal with high power. On the other hand, a binary-coded digital ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M1/66
CPCH03F3/2178H03F3/24H03G3/002H03F1/02H04B1/0475H04L25/08H04B2001/045
Inventor 王琦学陈仰鹃张湘辉赖力新柯尔拉·穆罕默德
Owner MEDIATEK INC
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