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A signal amplification structure and communication equipment

A signal amplification and amplifier technology, applied in the field of wireless communication design, can solve problems such as complex circuits, unstable power amplification, redundancy, etc., and achieve the effect of suppressing oscillation frequency and improving stability

Active Publication Date: 2019-06-28
GUANGZHOU HUIZHI MICROELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One-stage power amplifiers have been difficult to meet people's needs, and multi-stage amplifiers have become a common design method
However, if each amplifier in the multi-stage amplifier is powered separately, it will cause circuit complexity and redundancy, so the usual solution to this problem is to use the same power supply (ie common source) to realize the multi-stage amplifier, for example figure 1 shown
[0003] However, using the same power supply can cause the following problems (see figure 1 Shown): 1. Due to the shared power supply between the driver stage amplifier and the power stage amplifier, a loop will be formed, which will make the driver stage amplifier and the power stage amplifier interact with each other, resulting in instability of power amplification

Method used

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  • A signal amplification structure and communication equipment
  • A signal amplification structure and communication equipment
  • A signal amplification structure and communication equipment

Examples

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Embodiment 1

[0021] An embodiment of the present invention provides a signal amplification structure. figure 2 It is a schematic diagram of the composition structure of the signal amplification structure of the embodiment of the present invention; as figure 2 As shown, the signal amplification structure includes: at least one driver amplifier 11 and a power amplifier 12; the at least one driver amplifier 11 is connected in series; the at least one driver amplifier 11 and the power amplifier 12 are connected to the same A power supply 13, making the at least one driver stage amplifier 11 respectively form a loop with the power stage amplifier 12;

[0022] The signal amplifying structure further includes a notch unit 14 for blocking the oscillation frequency in the loop; one end of the notch unit 14 is connected to the loop, and the other end of the notch unit 14 is grounded. figure 2 In the above, the signal amplification structure includes a driver amplifier 11 and a power amplifier 12...

Embodiment approach

[0026] Specifically, the notch unit 14 may be composed of a first capacitor C1 and a first inductance L1; the values ​​of the first capacitor C1 and the first inductance L1 in the notch unit 14 are determined according to the oscillation frequency generated in the loop. Specifically, the capacitance value of the first capacitor C1 and the inductance value of the first inductor L1 are adapted to the oscillation frequency in the loop. As an implementation manner, the relationship between the capacitance value of the first capacitor C1, the inductance value of the first inductor L1 and the oscillation frequency in the loop satisfies:

[0027] Wherein, f is the oscillation frequency; L is the inductance value of the first inductor L1; C is the capacitance value of the first capacitor C1.

[0028] As an implementation manner, the first low-pass filtering unit includes a second inductor L2 and the first capacitor C1; the second inductor L2 is connected in series in the first loop;...

Embodiment 2

[0033]The embodiment of the present invention also provides a communication device, the communication device includes the signal amplification structure according to the first embodiment of the present invention. Specifically, such as figure 2 As shown, the signal amplification structure includes: at least one driver amplifier 11 and a power amplifier 12; the at least one driver amplifier 11 is connected in series; the at least one driver amplifier 11 and the power amplifier 12 are connected to the same A power supply 13, making the at least one driver stage amplifier 11 form a loop with the power stage amplifier 12 respectively;

[0034] The signal amplifying structure further includes a notch unit 14 for blocking the oscillation frequency in the loop; one end of the notch unit 14 is connected to the loop, and the other end of the notch unit 14 is grounded.

[0035] In the embodiment of the present invention, in order to satisfy the wireless communication quality of the com...

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PUM

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Abstract

Embodiments of the present invention provide a signal amplification structure and communication equipment. The signal amplification structure includes: at least one driver amplifier and a power amplifier; the at least one driver amplifier is connected in series; the at least one driver amplifier and the power amplifier are connected to the same power supply, so that the at least one driver The first-stage amplifier forms a loop with the power-stage amplifier respectively; the signal amplification structure also includes a notch unit for blocking the oscillation frequency in the loop; one end of the notch unit is connected to the loop, and the The other end of the notch unit is grounded.

Description

technical field [0001] The invention designs wireless communication technology, and in particular relates to a signal amplification structure and communication equipment. Background technique [0002] As people have higher and higher requirements for wireless communication quality, the power requirements for power amplifiers used for communication signal transmission are higher and higher. One-stage power amplifiers are difficult to meet people's needs, and multi-stage amplifiers have become a common design method. However, if each amplifier in the multi-stage amplifier is powered separately, it will cause circuit complexity and redundancy, so the usual solution to this problem is to use the same power supply (ie common source) to realize the multi-stage amplifier, for example figure 1 shown. [0003] However, using the same power supply can cause the following problems (see figure 1 As shown): 1. Due to the shared power supply between the driver amplifier and the power a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03F1/26H03F3/68
CPCH03F1/26H03F3/68H03F2200/451H03F3/21H03F1/30H03F2200/411H03F2200/459H03F3/245H03F3/19
Inventor 徐柏鸣苏强彭振飞
Owner GUANGZHOU HUIZHI MICROELECTRONICS
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