Helical Antennas

What are helical antennas?

A helical antenna is a type of antenna that is mainly made of spring coil metal wires (e.g. spring stainless steel wires, spring copper wires, etc.) wound into a helical shape that resembles a spring.

This helical structure gives it unique electrical properties that enable it to effectively transmit and receive radio waves.

The spring coil helical antenna converts high-frequency current into electromagnetic wave when transmitting, and converts electromagnetic wave into high-frequency current when receiving.

Structure and working principle of helical antennas

The working principle of the spring coil helical antenna is based on electromagnetic induction.

When the current flows along the helix, it generates a magnetic field in space, which radiates electromagnetic waves.

When received, the electromagnetic wave will generate an induction current in the spiral structure, thus realizing the reception of the signal.

Applications of spring helical antennas

Spring helical antennas are widely used in various electronic products due to their low cost and good performance.

Common spring coil antenna materials include copper spring antennas, nickel-plated spring helix antennas, and so on.

Categorized by frequency, there are 230 MHz, 315 MHz, 433 MHz, 470/510MHz, 868 MHz, 915 MHz, 2.4 GHz, and 4G LTE spring helical coil antennas, etc.

Who manufactures spring coil helical antennas?

C&T RF Antennas Inc. manufactures many types of spring coil helical antennas for your choice. Contact us for off-the-shelf internal spring coil helical antennas or design customizations.