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Controllable gain amplifier and control method

A technology of gain amplifier and gain amplification, which is applied in the direction of gain control, amplification control, improving the amplifier to expand the bandwidth, etc. It can solve the problems of small bandwidth range, single gain control mode, and low precision, and reach the operating frequency bandwidth range big effect

Pending Publication Date: 2019-10-22
XIAMEN UNIV TAN KAH KEE COLLEGE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The controllable gain amplifiers currently on the market have problems such as single gain control mode, low precision, and small bandwidth range.

Method used

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  • Controllable gain amplifier and control method
  • Controllable gain amplifier and control method
  • Controllable gain amplifier and control method

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] Please refer to figure 1 , the present invention provides a controllable gain amplifier, including MSP540 single-chip microcomputer, power supply module, keyboard module, display module, gain amplification module, button module and DIP switch module; described MSP540 single-chip computer and gain amplification module, power supply module, keyboard module and The display module is connected separately; the gain amplification module is also connected with the button module and the DIP switch module respectively.

[0034] In this example, refer to figure 2 , The controllable gain amplifier has differential input and differential output of channels A and B, and channels A and B have independent power-down functions. Transformers T1-T4 in the system can provide both impedance matching and single-ended to differential conversion. , The turns ratio ...

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Abstract

The invention relates to a controllable gain amplifier, which is characterized by comprising a single-chip microcomputer module, a power supply module, a keyboard module, a display module, a gain amplification module, a key module and a DIP switch module. The single-chip microcomputer module is connected with the gain amplification module, the power supply module, the keyboard module and the display module. And the gain amplification module is also connected with the key module and the DIP switch module respectively. According to the gain amplifier, different gain modes can be adjusted according to actual conditions.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a controllable gain amplifier and a control method. Background technique [0002] With the rapid development of electronic technology and the continuous improvement of modern communication and communication technology, wireless communication technology is becoming more and more mature. In recent years, the application of wireless communication in various fields has become more and more common, and people require more accurate signal conditioning, low power consumption, high frequency and high bandwidth. The controllable gain amplifiers currently on the market have problems such as single gain control mode, low precision, and small bandwidth range. Contents of the invention [0003] In view of this, the object of the present invention is to provide a controllable gain amplifier and a control method, which can realize adjusting different gain modes according to ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03G3/20H03F1/42H03K17/16
CPCH03G3/20H03F1/42H03K17/16
Inventor 任欢郑琳潇张亮烽
Owner XIAMEN UNIV TAN KAH KEE COLLEGE
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