What is circular polarization, in reference to the Helical Antenna?
Most commonly used antennas in wireless audio are linear polarized. Linear polarization means that the antenna is radiating electromagnetic energy on one plane only, either vertically or horizontally. For maximum signal strength, both the transmit and receive antennas in a wireless system must be oriented in parallel with each other. Any deviation from this position will result in signal loss, with a perpendicular antenna orientation creating the maximum amount of degradation. A performer using a wireless in-ear receiver and microphone transmitter rarely ever stays completely still. This constantly changes the antenna polarization, weakening the RF signal.
With circular polarized antennas, such as the PWS Helical and Domed Helical, the electromagnetic field rotates in a circular motion for every RF frequency cycle. This means that no matter how the transmit and receive antennas are oriented in reference to each other, the signal strength remains constant.
What is the difference between a right hand and left hand Helical Antenna?
Helical antennas are circularly polarized. The electromagnetic wave from a right hand Helical rotates clockwise in the direction of the wave’s propagation. This is known as right hand circular polarization. Left hand circular polarization is when the rotation of the electromagnetic wave is counter clockwise. As a standard, the copper element on the PWS Helical Antenna is wound with a right-hand polarization.