Title:
METHOD FOR DETERMINING ELECTRICAL LENGTH OF COMPENSATION LINE FOR MAIN POWER AMPLIFIER IN DOHERTY ARCHITECTURE
Document Type and Number:
WIPO Patent Application WO/2024/082823
Kind Code:
A1
Abstract:
The present invention belongs to the technical field of wireless communications, and particularly relates to a method for determining the electrical length of a compensation line for a main power amplifier in a Doherty architecture. The method comprises: acquiring an optimal output impedance value of a main power amplifier, wherein the main power amplifier has a first port impedance and a second port impedance; in a simulation environment, building a simulation power amplifier circuit, the connection sequence of which is sequentially the first port impedance, an output matching circuit, a compensation line and the second port impedance; acquiring a Smith chart of the simulation power amplifier circuit, and acquiring an S parameter of the first port impedance according to the Smith chart; setting the electrical length of the compensation line to be in an adjustable state; by means of rotating a central frequency point of the Smith chart, changing the impedance value of the first port impedance corresponding to the central frequency point to be the same as the optimal output impedance value; and determining the numerical value of the electrical length of when the impedance value of the central frequency point is the optimal output impedance value, and taking the numerical value as a final electrical length value and outputting same. In the present invention, a Smith chart is used to perform graphical solution to obtain the electrical length of the compensation line for the main power amplifier, thereby improving the operating efficiency.
Inventors:
CAI LIYUAN (CN)
GUO JIASHUAI (CN)
GUO JIASHUAI (CN)
Application Number:
PCT/CN2023/115059
Publication Date:
April 25, 2024
Filing Date:
August 25, 2023
Export Citation:
Assignee:
LANSUS TECH INC (CN)
International Classes:
G06F30/36; H03F1/02; H03F1/56; H03F3/195; H03F3/213
Attorney, Agent or Firm:
SHENZHEN JUNXINCHENG INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)
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