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WiFi antenna requirements for PCB layout and structure

November 27, 2022

As market competition intensifies, hardware devices are developing in an integrated direction. Antennas have also evolved from external evolution to embedded, and we will first introduce the types of antennas for this type of application :

WiFi antenna requirements for PCB layout and structure

(1) On Board onboard: integrated with PCB etching, limited performance, very low cost, used in Bluetooth, WIFI module integration;

(2) SMT mount type: the material is ceramic, metal sheet, PCB, and the performance cost is moderate, suitable for high-volume embedded RF modules;

(3) IPX external connection: use PCB or FPC + Cable combination, excellent performance, moderate cost, widely used in OTT, terminal equipment;

(4) External external category: plastic rod antenna, high performance, independence, high cost, applied to terminal equipment, no need to consider EMC and other issues;

Antenna type

External antennas are well known, so let's take a look at the space required for the three types of built-in antennas:

Three types of built-in antennas

Three types of built-in antennas

Pcb plug-in antenna

Bracket antenna

Connected antenna

Let's summarize the space requirements and performance indicators:

Embedded wifi antenna

The above is the antenna design reference for WIFI2.4G!

The ultimate goal of the antenna is to radiate the RF signal into free space. At this time, the antenna design is very important, but the antenna design depends largely on the characteristics of the installed platform. In addition, the antenna is sensitive to the surrounding environment. In many cases, the antenna is unique to each platform. Because the customer's consideration of the antenna design is not clear, here are some suggestions for our portable antenna design, so that customers can better design their own circuits and PCBs, increasing the chances of successful projects. But each project has its own characteristics, so there are still some issues that require specific analysis of specific issues.

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Author:

Ms. Zoe Zhong

Phone/WhatsApp:

+8618617178558

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