ISM Wireless Adapter (Dongle)

The application of ISM wireless adapter Dongle in many IoT devices cannot be ignored. This ISM wireless adapter is designed based on the integration of USB interface chip and wireless chip. Users can connect the wireless adapter to the USB interface of the computer and use it as a gateway. They can also purchase the wireless module and assemble it as a wireless adapter for design and production. At the same time, they can also purchase and customize the existing ISM wireless adapter as required. What should be considered when purchasing?

When purchasing or designing the ISM wireless adapter, it should be clear that it is based on the wireless chip to complete the design, so we should also pay attention to the parameter configuration of the specific chip. For example, many ISM wireless adapters integrate TI CC1312 chip as a gateway. In this case, we still need to determine the parameters of TI CC1312 chip. Take TI CC1312 as an example, its operating frequency band is 169M, 433M, 860MHz-960MHz, and supports ISM frequency band. The maximum transmission power rate is+14 dBm, the acceptance sensitivity is - 124 dBm, and the wireless communication rate is 0.3-2000 kbps. Of course, we can also understand the actual measurement situation, such as antenna gain 3dBi, The antenna is 2.5 meters above the ground, the air speed is 1.2 kbps, and the distance is about 500 meters. This can reflect its application, and then the hardware parameters can not be ignored, because the size of CC1312 chip is 7 x 7mm, its communication interface is serial port or SPI, while the wireless interface supports IPEX, spring antenna and patch antenna, and the packaging method is still U-like disk.

When designing the ISM wireless adapter (dongle) based on a specific chip, we should pay attention to the parameters just mentioned, and then consider other requirements. For example, some wireless adapters should not exceed the size of business cards, while others should pay attention to applications. After all, the high-power ISM wireless adapter (dongle) can be applied to various medium-long distance signal transmission devices, such as home smart home devices, online meter reading devices, POS machines and other devices, which should be considered.