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Magnetic resonance imaging device, radio frequency amplification system and method

A technology of radio frequency amplification and digital radio frequency, which is applied in the field of radio frequency, can solve the problems of complex circuit design and many electronic components, and achieve the effect of simple structure, simple circuit design and few electronic components

Active Publication Date: 2018-08-21
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the traditional radio frequency amplification system, there are technical problems such as many electronic components and complicated circuit design.

Method used

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  • Magnetic resonance imaging device, radio frequency amplification system and method
  • Magnetic resonance imaging device, radio frequency amplification system and method
  • Magnetic resonance imaging device, radio frequency amplification system and method

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Embodiment Construction

[0016] Specific implementations of the present invention will be described below. It should be noted that in the process of specific descriptions of these implementations, for the sake of concise description, it is impossible for this specification to describe all the features of the actual implementations in detail. It should be understood that, in the actual implementation process of any embodiment, just like in the process of any engineering project or design project, in order to achieve the developer's specific goals and to meet system-related or business-related constraints, Often a variety of specific decisions are made, and this can vary from one implementation to another. In addition, it will be appreciated that while such development efforts may be complex and lengthy, the technology disclosed in this disclosure will be Some design, manufacturing or production changes based on the content are just conventional technical means, and should not be interpreted as insuffic...

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Abstract

A radio frequency amplification method, comprising modulating a first digital carrier signal with a digital envelope signal to generate a digital radio frequency pulse signal with a first frequency, converting the digital radio frequency pulse signal into an analog radio frequency pulse signal, and converting the analog radio frequency pulse signal Amplify to generate a radio frequency output signal, convert the analog feedback signal sampled from the radio frequency output signal into a digital feedback signal; use the second digital carrier signal to demodulate the digital feedback signal to generate an I signal and a Q signal, and generate according to the I signal and the Q signal The amplitude setting signal and the phase setting signal, the amplitude setting signal is used to adjust the amplitude of the digital envelope signal, and the phase setting signal is used to adjust the phase of the first digital carrier signal. The second digital carrier signal has a predetermined frequency offset and a predetermined phase offset relative to the first digital carrier signal. The invention also provides a radio frequency amplification system and a magnetic resonance imaging device.

Description

technical field [0001] The invention relates to the field of radio frequency technology, in particular to a magnetic resonance imaging device, a radio frequency amplification system and a method. Background technique [0002] Many forms of wireless communication employ radio frequency transmissions. A radio frequency carrier signal can be modulated to carry information. The modulated RF carrier signal can be amplified and transmitted. In order to prevent the information carried by the modulated radio frequency carrier signal from being distorted, generally, it is necessary to maintain the relative linearity of the amplification process. [0003] For example, a Magnetic Resonance Imaging (MRI) apparatus typically has a radio frequency amplification system that utilizes radio frequency amplifiers to drive radio frequency coils located within its primary magnetic structure. The radio frequency amplifier receives a series of pulses generated by an external radio frequency sou...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R33/36
CPCG01R33/3614G01R33/36H03F1/3247H03F3/189H03F2200/165H03F2200/336H03F2200/451H03F2200/471
Inventor 蒋鑫宋婷婷陈基锋
Owner GENERAL ELECTRIC CO
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