Differences between dual-polarized and single-polarized antennas

Hello,

Dual-polarized and single-polarized antennas differ in the following aspects:

Transmit angle:

• In mountainous or plain villages of open regions, signals of mobile phones easily match vertical-polarized signals. Therefore, vertical-polarized antennas provide better coverage effect than non-vertical-polarized antennas.

• In urban areas, electromagnet waves are reflected many times among buildings. Metal objects and metal oxide coated glass in and outside buildings may cause the polarization direction to change. Vertical-polarized antennas (single- and dual-polarized) and ±45° dual-polarized antennas provide similar coverage capabilities.

Receive angle:

• Single-polarized antenna: receives and transmits radio signals using two separate antennas. Radio signals are transmitted and received at the horizontal or vertical direction. Therefore, a large installation space and large maintenance workload are required.

• Dual-polarized antenna: receives and transmits radio signals using one antenna. The transmit direction of radio signals is vertical to the receive direction.

Antenna dimension: Dipoles of a dual-polarized antenna in different polarization directions are sufficiently isolated even if the dipoles are overlapped. Therefore, a dual-polarized antenna is no larger than a single-polarized antenna.

Any further questions, let us know.