You are here: Home / Products / Antenna / Spring Antenna / 2.4Ghz Spring Antenna for Wi-Fi/Bluetooth/Zigbee Applications

Product Detail


Share to:
sharethis sharing button

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

2.4Ghz Spring Antenna for Wi-Fi/Bluetooth/Zigbee Applications, with high gain and compact size
  • 50Ω

  • DL-T021-2.4G

  • 2.4~2.5GHz

  • 1W


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 do

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


 Medical automation

 Wireless module

Electrical Test Report:

Frequency 2400~2500MHz
Impedance 50Ω
V.S.W.R ≦1.5
Band Width 100MHz
Gain 3dBi
Linear polarization Vertical
Power 1W
Material Phosphor bronze; Gold-plated
Operating temperature -40 ~ 85 °C
Storage temperature -40 ~ +85℃