Unlock instant, AI-driven research and patent intelligence for your innovation.

Antenna tuning control method, device and system

An antenna tuning and control method technology, applied in the field of radio frequency communication, can solve problems such as difficult implementation, difficult measurement of antenna phase, and complexity, and achieve the effects of easy implementation, reduced design cost, and fast convergence speed

Active Publication Date: 2021-10-26
BEIJING SPREADTRUM HI TECH COMM TECH CO LTD
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The phase of the complex reflection coefficient of the antenna is not easy to measure, so the existing methods are more complicated to implement and difficult to implement

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Antenna tuning control method, device and system
  • Antenna tuning control method, device and system
  • Antenna tuning control method, device and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0044] An embodiment of the present invention provides an antenna tuning control method, such as figure 1 As shown, the method includes:

[0045] S11. Obtain the transmitting power and reflected power of the antenna, and calculate the return loss;

[0046] S12. When the return loss reaches the preset threshold, use a hill-climbing algorithm...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides an antenna tuning control method, device and system. The method includes: obtaining the transmit power and reflected power of the antenna, and calculating the return loss; when the return loss reaches a preset threshold, a hill-climbing algorithm is used to search for the maximum value of the objective function of the impedance tuner until the maximum value of the objective function satisfies A preset threshold range, or the number of iterations reaches a preset upper limit, where the objective function is related to the input reflection coefficient and forward transmission gain of the impedance tuner; the maximum value of the output objective function of the control impedance tuner corresponds to impedance. The invention does not need to measure the complex reflection coefficient of the antenna during the tuning process, and the method is simple and easy to realize.

Description

technical field [0001] The present invention relates to the technical field of radio frequency communication, in particular to an antenna tuning control method, device and system. Background technique [0002] When the mobile phone is in use, due to changes in the external environment, such as the proximity of the head and hands, the impedance of the mobile phone antenna changes, causing the mobile phone to fail to radiate power effectively, the efficiency of the mobile phone decreases, and the standby time of the mobile phone decreases. In order to improve the performance of the mobile phone, it is necessary to perform impedance tuning on the impedance of the antenna. Existing antenna tuning schemes calculate the antenna impedance by calculating the complex reflection coefficient of the antenna, and then search for the optimal matching impedance of the antenna. [0003] In the process of realizing the present invention, the inventor found that there are at least the follow...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/10H04B17/12H04B17/20G01R29/10
CPCG01R29/10H04B17/10H04B17/12H04B17/20
Inventor 安斌
Owner BEIJING SPREADTRUM HI TECH COMM TECH CO LTD