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Explain the relationship between WiFi signal and router and WiFi module

October 20, 2022

In the Internet age, there is no network feeling instantly out of touch with society, so you can hear the question: "Does your home have WiFi? What is the WiFi password?" Then the question is, how does the WiFi signal come from? What is the relationship between this WiFi signal and the router and WiFi module? In this article, SKYLAB will elaborate for you one by one.

First of all, let's take a look at the relationship between WiFi signal and router and WiFi module; WiFi module, also known as serial WiFi module, belongs to the transmission layer of the Internet of Things. The function is to convert the serial port or TTL level to an embedded WiFi wireless network communication standard. Module, built-in wireless network protocol IEEE802.11b.gn protocol stack and TCP/IP protocol stack. Whether it’s your own WiFi signal or a business’s WiFi signal, the router is essential. The most important role in the router is the WiFi module. Without the WiFi module, the router is an empty shell for you. It can be said that the wifi module is the key to converting wired signals into wireless signals for everyone to surf the Internet. For example: if it is AP routing, the AP WiFi module SKW71 can be used. There are 4 communication interfaces USB/WAN/LAN/UART, and the transmission distance can reach 150 meters.

Then, let’s understand what AP and AP WiFi module are; AP is a wireless switch. When the wireless AP is connected to a common Ethernet switch, the wireless network and the wired network are seamlessly combined together, usually multiple wireless Used by routers to extend signal coverage. For example, the space for network layout is relatively large, and the first one is placed as a router in a certain area, but the wireless signal will be unstable if it is far away. Then you can place a second wireless router in the adjacent area, and the second one is connected to the first through a network cable, so that the WiFi signal coverage in the entire area will be more even.

AP WiFi module

Explain the relationship between WiFi signal and router and WiFi module

AP WiFi module SKW71 is a 1T1R wireless module that complies with 802.11n Wi-Fi standard. It integrates a 24K MIPS processor, two high-speed Ethernet interfaces, a USB2.0 interface, an I2S interface and multiple GPIOs.

The main chip of SKW71 is AR9331 of Atheros. Under the 802.11n Wi-Fi standard, the 20MHz bandwidth can reach 72.2Mbps data transmission, and the 40MHz bandwidth can reach 150Mbps data transmission. The module supports AP, client and relay modes and serial WiFi.

Under what circumstances is suitable to use AP wifi module:

The communication interface with the WiFi module is the network port (WAN/LAN)

Hard AP module—module with MCU and operating system

The product is a USB interface as a slave device (such as USB 3G/4G, USB camera, etc.)

How to choose AP wifi module

Explain the relationship between WiFi signal and router and WiFi module

There are many AP WiFi modules for low-cost wireless AP solutions compatible with 802.11 n / b / g. Among them, SKYLAB has SKW71/72/73/75. It only needs 3.3V power supply equipment and receiving antenna. Simple and convenient! Therefore, in the actual selection and application, engineers can determine the final product according to the actual requirements of the product, as well as the size, packaging, frequency range, data rate, transmission power, transmission distance, communication interface, power supply voltage, antenna interface and other parameters of the WiFi module. AP WiFi module.

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Author:

Ms. Zoe Zhong

Phone/WhatsApp:

+8618617178558

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