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Cascode RF Power Amplifier Based on Closed-loop Power Control

A closed-loop power control, cascode technology, used in power amplifiers, high-frequency amplifiers, amplifiers, etc., can solve the problems of difficult to achieve temperature compensation, sacrificing the efficiency of the power amplifier system, and reducing the overall efficiency of the system by the power controller. Enhanced stability control and reduced effects

Active Publication Date: 2017-06-09
ETRA SEMICON SUZHOU CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This power control method can achieve linear power control with a large dynamic range and a simple structure; but this power control method will sacrifice the efficiency of the power amplification system
[0006] In summary, although the above three methods can control the power of the power amplifier, it is difficult to realize the temperature compensation of the power control of the power amplifier, and the power controller will reduce Overall efficiency of the system

Method used

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  • Cascode RF Power Amplifier Based on Closed-loop Power Control
  • Cascode RF Power Amplifier Based on Closed-loop Power Control
  • Cascode RF Power Amplifier Based on Closed-loop Power Control

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Embodiment 1

[0038] Such as Figure 4 As shown, the enhanced pHEMT transistor 403 and the enhanced pHEMT transistor 404 form a basic cascode structure: the gate of the transistor 403 is connected to the input signal port RFin through the input matching network 401, and the source of the transistor 403 is connected to the ground. The drain of the transistor 403 is connected to the source of the transistor 404, the drain of the transistor 404 is connected to the supply voltage port Vcc of the radio frequency power amplifier through the choke inductor 408, and the drain of the transistor 404 is also connected to the radio frequency power amplifier through the output matching network 410 The output signal port RFout. The supply voltage port Vcc of the RF power amplifier is connected to one end of the decoupling capacitor 409, and the other end of the decoupling capacitor 409 is connected to the ground. The gate of the transistor 403 is also connected to the output terminal of the bias circuit...

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Abstract

The invention discloses a cascode radio frequency power amplifier based on closed-loop power control. The cascode radio frequency power amplifier comprises at least one cascode transistor pair composed of a first radio frequency transistor and a second radio frequency transistor and a nominal cascode transistor pair which corresponds to the cascode transistor pair and is composed of a third radio frequency transistor and a fourth radio frequency transistor. The cascode transistor pairs are connected in parallel. The third radio frequency transistor and the fourth radio frequency transistor serve as nominal transistors of the first radio frequency transistor and the second radio frequency transistor, so that temperature compensation and technology deviation compensation of power control over the power amplifier can be achieved.

Description

technical field [0001] The invention belongs to the technical field of radio frequency integrated circuits, and specifically relates to a cascode radio frequency power amplifier based on closed-loop power control and a power control method thereof, which have a temperature compensation function and a process deviation correction function and can improve the efficiency of the radio frequency power amplifier. Background technique [0002] The RF power amplifier is an indispensable key component in various wireless communication applications. It is used to amplify the power of the modulated RF signal output by the transceiver to meet the power requirements of the RF signal required for wireless communication. Due to the performance requirements of modern wireless communication, the power amplifier needs to be controlled, and the control accuracy needs to reach ±1dB. At present, the power control methods of power amplifiers mainly include the following types: [0003] 1. Power ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03F1/30H03F3/20H03F3/189
CPCH03F1/30H03F3/193
Inventor 刘磊徐志伟路宁
Owner ETRA SEMICON SUZHOU CO LTD
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