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Power amplifier bias protection circuit and circuit board using same

A power amplifier and protection circuit technology, applied in the field of circuits, can solve problems such as the power amplifier being easily damaged, and achieve the effect of solving the problem of being easily damaged

Pending Publication Date: 2021-12-17
DXY TECH SHENZHENCO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a power amplifier bias protection circuit and a circuit board using the circuit, which effectively solves the technical problem that the existing power amplifier is easily damaged

Method used

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  • Power amplifier bias protection circuit and circuit board using same
  • Power amplifier bias protection circuit and circuit board using same
  • Power amplifier bias protection circuit and circuit board using same

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Embodiment Construction

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0030] Directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", "top" Words such as "bottom" and "bottom" only refer to the orientation of the drawings, and the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention.

[0031] Words such as "first" and "second" in the terminology of the present invention are only used for des...

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Abstract

The invention provides a power amplifier bias protection circuit. The power amplifier bias protection circuit comprises a voltage conversion module, a driving module, a voltage generation module and a signal generation module. The voltage conversion module converts a first voltage input by an external power supply into a second voltage. Based on the second voltage, the voltage generation module generates a driving voltage and outputs the driving voltage to the input end of the corresponding power amplifier, and the voltage generation module further comprises a delay energy storage unit for performing delay operation on the driving voltage. The driving module generates a control signal based on the driving voltage and the first voltage. Based on the control signal and the first voltage, the signal generation module generates a driving signal and outputs the driving signal to the control end of the corresponding power amplifier. When the power amplifier is started, the time that the driving signal drives the control end is later than the time that the driving voltage drives the input end. When the power amplifier is turned off, the time when the driving signal stops driving the control end is earlier than the time when the driving voltage stops driving the input end. The invention also provides a corresponding circuit board.

Description

technical field [0001] The invention relates to the field of circuits, in particular to a power amplifier bias protection circuit. Background technique [0002] In modern society, power amplifiers are used in fields such as wireless communication and microwave heating. The power amplifier can work normally only through a specific power-on sequence and power-off sequence. Otherwise, the internal current of the power amplifier is easy to increase instantaneously, and the power amplifier is easy to be damaged. There is a technical problem that existing power amplifiers are easily damaged. [0003] Therefore, it is necessary to provide a power amplifier bias protection circuit and a circuit board using the circuit to solve the above technical problems. Contents of the invention [0004] The invention provides a power amplifier bias protection circuit and a circuit board using the circuit, which effectively solves the technical problem that the existing power amplifier is ea...

Claims

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Application Information

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IPC IPC(8): H03F1/52H03F3/213
CPCH03F1/52H03F3/213
Inventor 卓龙声张国庆侯红亮丁耀君
Owner DXY TECH SHENZHENCO LTD
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