CN-224204363-U - Directional antenna for Internet of things communication and Internet of things communication device

Abstract

The utility model relates to a radio antenna technology and discloses a directional antenna for Internet of things communication and an Internet of things communication device, wherein the directional antenna comprises an artificial magnetic conductor reflecting surface positioned at an upper layer and a gradient metamaterial layer positioned at a lower layer, the artificial magnetic conductor reflecting surface comprises metamaterial units which are arranged in a 5 multiplied by 5 array, in each metamaterial unit, the upper layer is a metamaterial patch covering a 2.4GHz frequency band, the lower layer is a slot coupling antenna covering a Sub-1GHz frequency band, and the central axis of the central aperture of an upper fractal opening resonance ring coincides with the central axis of the central aperture of a lower nested hexagonal ring. The utility model aims to provide a directional antenna which has low power consumption and strong interference resistance and can be used for communication of the long-distance and high-penetration Internet of things.

Inventors

• WEI YINYU
• XIAO JUNYI
• HUANG JINJUN

Assignees

• 深圳市新蕾电子有限公司

Dates

Publication Date

20260505

Application Date

20250618

Claims (9)

1. 1. The directional antenna for the communication of the Internet of things is characterized by comprising an artificial magnetic conductor reflecting surface positioned at an upper layer and a gradient metamaterial layer positioned at a lower layer, wherein the artificial magnetic conductor reflecting surface comprises metamaterial units distributed in a 5 multiplied by 5 array; In each metamaterial unit, the upper layer is a metamaterial patch covering a 2.4GHz frequency band, the lower layer is a slot coupling antenna covering a Sub-1GHz frequency band, and the central axis of the central aperture of the upper layer fractal split resonant ring coincides with the central axis of the central aperture of the lower layer nested hexagonal ring.
2. 2. The directional antenna for internet of things communication of claim 1, wherein the metamaterial patch is a fractal split ring.
3. 3. The directional antenna for internet of things communication of claim 1, wherein the slot-coupled antenna is a nested hexagonal ring.
4. 4. The communication device of the Internet of things is characterized by comprising a main control module and a radio frequency module, wherein the radio frequency module comprises a directional antenna and a feed network, and the directional antenna is electrically connected with the main control module through the feed network; the directional antenna is the directional antenna of the internet of things communication of any one of claims 1-3.
5. 5. The internet of things communication device according to claim 4, wherein duplex filters adapted to 2.4GHz band and Sub-1GHz band are integrated in the feed network.
6. 6. The internet of things communication device of claim 4, wherein the directional antenna is electrically connected to a feed network through a Sub-1GHz front end, and a SX1262 chip is integrated in the Sub-1GHz front end.
7. 7. The internet of things communication device of claim 4, wherein an NB-IoT module is further provided in the radio frequency module.
8. 8. The internet of things communication device of claim 4, wherein the radio frequency module is of an integrated module design, incorporating a noise amplifier and a power amplifier.
9. 9. The internet of things communication device of claim 4, wherein the master control chip configured by the master control module is an nRF9160 chip.

Description

Directional antenna for Internet of things communication and Internet of things communication device Technical Field The utility model relates to the technical field of radio antennas, in particular to a directional antenna for internet of things communication and an internet of things communication device. Background Currently, in internet of things communication, in order to ensure accurate transmission and reception of wireless signals, an omni-directional antenna is generally used for performing large-range signal coverage. However, the omnidirectional antenna has low radiation efficiency, so that more energy is required to ensure enough signal coverage, which directly results in shortening the endurance time of the communication device of the internet of things, and in a complex electromagnetic environment, the omnidirectional antenna is susceptible to multipath effect and common-frequency interference (the multipath effect can cause signals to reach a receiving end through different paths to cause signal fading and distortion, the common-frequency interference can be mutually overlapped with useful signals to reduce signal quality), and the omnidirectional antenna adopts a non-directional transmission mode, so that the communication requirements of long-distance and high-penetrability scenes (such as the need of signal coverage of a large-area farmland in smart agriculture, the need of signal penetration of pipeline walls in underground pipe network monitoring and the like) are difficult to meet. The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present utility model and is not intended to represent an admission that the foregoing is prior art. Disclosure of utility model The utility model provides a directional antenna for Internet of things communication and an Internet of things communication device, and aims to provide a directional antenna which has low power consumption and strong interference resistance and can be used for long-distance and high-penetration Internet of things communication. In order to achieve the above purpose, the utility model provides a directional antenna for communication of the Internet of things, which comprises an artificial magnetic conductor reflecting surface positioned at the upper layer and a gradient metamaterial layer positioned at the lower layer, wherein the artificial magnetic conductor reflecting surface comprises metamaterial units which are arranged in a 5 multiplied by 5 array; In each metamaterial unit, the upper layer is a metamaterial patch covering a 2.4GHz frequency band, the lower layer is a slot coupling antenna covering a Sub-1GHz frequency band, and the central axis of the central aperture of the upper layer fractal split resonant ring coincides with the central axis of the central aperture of the lower layer nested hexagonal ring. Optionally, the metamaterial patch is a fractal split ring. Optionally, the slot coupled antenna is a nested hexagonal ring. The utility model further provides an Internet of things communication device, which comprises a main control module and a radio frequency module, wherein the radio frequency module comprises a directional antenna and a feed network, and the directional antenna is electrically connected with the main control module through the feed network; the directional antenna is the directional antenna for communication of the Internet of things. Optionally, duplex filters adapting to the 2.4GHz frequency band and the Sub-1GHz frequency band are integrated in the feed network. Optionally, the directional antenna is electrically connected to the feed network through a Sub-1GHz front end, and an SX1262 chip is integrated in the Sub-1GHz front end. Optionally, the radio frequency module is further provided with an NB-IoT module. Optionally, the radio frequency module adopts an integrated module design, and integrates a noise amplifier and a power amplifier. Optionally, the main control chip set by the main control module is an nRF9160 chip. The technical scheme of the utility model has the beneficial effects that the directional antenna adopts the unique design of the upper artificial magnetic conductor reflecting surface and the lower gradient metamaterial layer, so that the radiation efficiency is greatly improved, wireless signals can be accurately transmitted and received, the energy consumption in the communication process of the Internet of things can be effectively reduced compared with the omnidirectional antenna, the endurance time is remarkably prolonged, the problem that the omnidirectional antenna is easy to suffer from multipath effect and common-frequency interference is avoided on the anti-interference performance, the signal quality of the communication of the Internet of things is greatly improved, and the communication requirement of the Internet of things based on the directional antenna can be well met by virtue of a directional