Onboard PCB inverted-F antenna 2.4 GHz radio frequency communication module

Abstract

The invention discloses an onboard PCB inverted-F antenna 2.4 GHz radio frequency communication module. The module comprises a PCB antenna connected with a matching circuit and is an inverted-F antenna; the inverted-F antenna comprises a radiation body 3, a grounded end 1 and a feed-in end 2. The ground end extends downwards from one end of the radiation body. One end of the feed-in end is connected with the radiation body, and the other end of the feed-in end is connected with a radio frequency module. The onboard PCB inverted-F antenna 2.4 GHz radio frequency communication module has the advantages that cost is low, power consumption is low and long-distance transmission is achieved, the problem that communication performance of nodes in industrial internet-of-things communication is poor is solved, and the special requirements for a micro type, low cost, low power consumption and long-distance transmission of the wireless communication nodes are met.

Description

technical field [0001] The invention relates to the field of industrial wireless Internet of Things communication, in particular to a 2.4GHz radio frequency communication module with PCB inverted F on board. Background technique [0002] With the development of wireless communication technology, industrial wireless sensor network puts forward new requirements for miniaturization of wireless communication nodes. Generally speaking, the communication module in a wireless communication node is mainly composed of two parts: a radio frequency chip and its peripheral circuit and an antenna. The performance of the antenna directly determines the quality of the node and even the entire wireless communication network. At present, traditional radio frequency communication modules often use external antennas, and these external antennas have the problem of inconsistent matching circuits between the power amplifier and the antenna, and the large size of the antenna is not conducive to t...

AI Technical Summary

Problems solved by technology

[0005] The research on printed inverted F (IFA) antennas at home and abroad has gone through several years, but most of the PCB inverted F antennas designed by researchers in the past have shortcomings such as insufficient gain, excessive return loss, and narrow effective bandwidth. For these shortcomings, many researchers at home and abroad have conducted in-depth research on the printed inverted F antenna from the aspects of antenna polarization, impedance mechanism, and current characteristics. In-Depth Analysis of Printed Inverted-F Antennas

However, although the printed inverted-F antenna they designed has a large enough gain, its return loss is -30dB and -16dB respectively, which still has the disadvantage of relatively large return loss

The application of these antennas makes the wireless communication module still have communication problems such as short transmission distance and low receiving sensitivity.

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