Li, Eric

Antenna Specification

Shenzhen Tuojin Shidai Technology Co., Ltd A520 BlueTooth Earphone 2BEI8-A520 2BEI8A520 a520

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Document DEVICE REPORTGetApplicationAttachment.html?id=8202362 
Antenna Specification Sheet
Manufacturer:Shenzhen Tuojin Shidai Technology Co., Ltd Manufacturer add.:505B, No. 88-116 Pingxin South Road,
Xinmu Community, Pinghu Street, Longgang District, Shenzhen, China

General Specifications:
Antenna Type: PCB Antenna Frequency Range:2400-2483.5MHz Impedance:50ohm Peak Gain:0dBi
Antenna Sharp

The pcb antenna follows the reference design guidelines described in the the BGM220S module datasheet from Silicon Labs. BGM220S modules include an integral antenna on board with the characteristics detailed in the tables below.
Antenna gain and radiation patterns have a strong dependence on the size and shape of the application PCB the module is mounted on, as well as on the proximity of any mechanical design to the antenna. The typical radiation patterns of the Bluetooth module BGM220S on a 50x30mm pcba are:

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