Antenna module

Abstract

The invention discloses an antenna module which comprises an antenna main body, an adjustable matching circuit, a power detector and a control unit; the antenna main body is provided with a signal feed-in point; the adjustable matching circuit is electrically connected with the antenna main body and a power amplifier, is used for providing a load resistor, is provided with adjustable impedance matching assemblies which are connected mutually, and is electrically connected to the signal feed-in point; the power detector is electrically connected with the adjustable matching circuit and the power amplifier, and is used for detecting a power index; and the control unit is electrically connected with the adjustable matching circuit and the power detector, and is used for reading an output power index and a signal intensity index, generates a control signal to the adjustable matching circuit according to the operation of the output power index and the signal intensity index, so as to change the load resistor continuously to reach impedance matching.

Description

technical field [0001] The present invention relates to an antenna module, and in particular to an antenna module for dynamically adjusting load impedance. Background technique [0002] Due to the rapid development of the technology communication industry, the application of information products is also becoming more and more popular. For example, electronic products such as 3G smart phones or e-book readers are frequently carried by users in their daily surroundings. This not only greatly improves the convenience of life, but also compresses time and space, so that everyone in modern times is no longer limited to geographical boundaries, but can make each other more closely integrated and interactive. The exchange of information and knowledge optimizes the pursuit of common interests and well-being. Therefore, in wireless communication, the antenna seems to play an important role in the center, making information transmission and knowledge exchange more convenient and unim...

AI Technical Summary

Problems solved by technology

[0003] However, because today's communication products are designed to be thinner and smaller to better meet user needs and enhance their convenience, such design trends also lead to their built-in antennas being more susceptible to the impact of users and the environment.

For example, in the process of operating and holding, the user's hand, head, etc. will all have a shielding effect on the antenna, absorb part of the electromagnetic energy and change the distribution of electromagnetic energy, or because the user's hand Contact with the radiator of the antenna and its current path, which will cause the mismatch of the antenna load impedance and the change of the current path, and will cause the shift of the operating frequency

In particular, these phenomena are becoming more and more serious as communication products become shorter and thinner, resulting in deterioration of communication capabilities and instability of communication quality

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