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Class AB amplifier

A technology of amplifiers and inductors, applied in the field of AB amplifiers, can solve problems such as mismatch and crossover distortion

Active Publication Date: 2015-07-22
MARVELL ASIA PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mismatch or crossover artifacts may appear when recombining the two halves of the signal

Method used

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Embodiment Construction

[0039] The following description is merely exemplary in nature and is in no way intended to limit the disclosure, its application, or uses. As used herein, the phrase at least one of A, B, and C should be construed to mean a logical (A or B or C) using a non-exclusive logical "OR". It should be understood that steps within a method may be executed in different order without altering the principles of the present disclosure.

[0040] now refer to figure 1 and figure 2 , which shows a single-ended arrangement of the push-pull class AB amplifier 50 and a single-ended arrangement of the push-pull class AB amplifier 100 . exist figure 1 In , the amplifier 50 is arranged in a common gate configuration. Amplifier 50 includes a first inductor L connected in series 1 , the first transistor T 1 , the second transistor T 2 and the second inductor L 2 . first transistor T 1 can be an NMOS transistor, and the second transistor T 2 It may be a PMOS transistor, but other types ...

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Abstract

A class AB amplifier includes a first inductor (L1) having a first terminal in communication with a voltage source terminal (Vdd). A first transistor (T1) has a drain terminal in communication with a second terminal of the first inductor (L1). A second transistor (T2) has a source terminal in communication with a source terminal of the first transistor (T2). A second inductor (L2) has a first terminal in communication with a drain terminal of the second transistor (T2) and a second terminal in communication with a reference potential (Vss). The drain terminals of the first transistor (T1) and the second transistor (T2) are capacitively coupled (Ccm) together.

Description

[0001] Description of divisional application [0002] This application is a divisional application of the Chinese invention patent application with the application number 201180019828.6 and the name "Class AB Amplifier", which was submitted on March 9, 2011 and entered the Chinese national phase on October 18, 2012. [0003] Cross References to Related Applications [0004] This application claims priority to US Patent Application No. 13 / 044,183, filed March 9, 2011, and US Provisional Application No. 61 / 312,167, filed March 9, 2010. The disclosure of the aforementioned application is hereby incorporated by reference in its entirety. technical field [0005] This disclosure relates to amplifiers and more particularly to AB amplifiers. Background technique [0006] The background description provided herein is for the purpose of generally presenting the context of the disclosure. The work of the presently named inventors is neither expressly nor impliedly admitted to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F3/191H03F3/26
Inventor S·苏塔德加F·阿拉姆
Owner MARVELL ASIA PTE LTD