# High-efficient E type power amplifier optimized design method

## A power amplifier and optimization design technology, applied in power amplifiers and other directions, can solve the problems of complicated design process, inability to guarantee performance meeting requirements, and energy consumption of matching network.

Inactive Publication Date: 2002-12-18
TSINGHUA UNIV
0 Cites 5 Cited by

## AI-Extracted Technical Summary

### Problems solved by technology

[0017] 1. Due to C 1 The selection of the value is somewhat arbitrary, and it cannot guarantee that the performance obtained in step (5) meets the requirements. Therefore, the actual design process often requires repeated attempts to make the PA meet the performance index requirements
The design process is more complicated
[0018] 2. Even if a solution that meets the performance requirements is obtained through repeated attempts, th...
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## Abstract

This invention relates to high efficiency class E power amplifier optimizing design method including: a given system parameter: output power Pout, power voltage Vdd, working frequency f and output Q value OL(=2 pi F*/RL) and setting RL* the largest value (RL): to calculate elements C1, L1, and RL to get value C1*, L1* and RL*, then further calculate L2, C2, with numerical analysis method calculating reactance element value jx to simplify class E PA traditional design to get the largest optimizing load so as to reduce the matched network loss in creasing the entire efficiency of PA.

Application Domain

Power amplifiers

Technology Topic

Numeric ValueVoltage +5

## Examples

• Experimental program(1)

### Example Embodiment

[0037] The embodiment of the optimized design method of the high efficiency class E power amplifier of the present invention is described as follows:
[0038] 1) Assumed output power P out =150mW, power supply voltage V dd =1.5v, working frequency f=2.4GHz, output Q value
[0039] = 10
[0040] 2) Calculate according to (Formula 6~8):
[0041] L 1 =9.91nH C 1 = 2.22pF R L = 20.45 ohm
[0042] 3)L 2 = 13.56nH, C 2 = 0.324pF
[0043] 4) The theoretical calculation of X is more complicated. In the actual simulation process, another method can be used: gradually change the value of X until the waveform of each node meets the working conditions of class E PA, and then determine the value of X.

## Description & Claims & Application Information

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