2.4Ghz Spring Antenna for Wi-Fi/Bluetooth/Zigbee Applications

2.4~2.5GHz Spring Antenna with High Gain (3 dBi)

Antenna Introduction:

Spring coil antenna is a built-in antenna with compact size and simple structure. It has high reliability in various low-power wireless communication applications. The principle of a spring antenna is composed of a folding spring and a matching circuit. The material of our spring antenna is brass, or phosphorous copper, and some will be quipped with a heating shrink tube to prevent oxidation. All are produced from new pure copper materials and can pass the ROHS test. The diameter  of the spring and the number of coils are important parameters for controlling the antenna frequency.

The length of each coil is based on /4 units, It is the wavelength of the operating frequency. By increasing the number of coils in the spring, the frequency of the  antenna can be reduced, while reducing the number of coils can increase the frequency. The length of a spring antenna is usually multiple of /4, otherwise it will  cause reflection and waveform distortion issues. Therefore, when the spring length is not in the case of multiples of /4, a tuning component must be used to match the impedance.

Download Center:

DL-T021-2.4G Spring Antenna Specification V1.0 

Antenna Characteristics:

● High gain

● Strong compati bility

● Good stability

Application Field：

● Smart Express Cabinet

● Security alarm

● Smart buildings, smart buildings

● Smart home

● Power monitoring

● Smart Industry

● Traffic monitoring equipment

● Smart Agriculture

● Temperature and humidity monitor

● Drone

● Medical automation

● Wireless module

Electrical Test Report: