Cobham Antenna Systems has developed a dual-polar UHF sector antenna for use in the ‘White Space’ frequency bands. This is the first product in a range of similar dual-polar base station antennas, which will be available from Cobham soon, in 2GHz, 3GHz and 5GHz bands.
Cobham’s wideband SA11-90-0.6VH/2178 antenna provides both vertical and horizontal polarisations. In conjunction with radios, having two-port diversity, it can provide non-line-of-sight (NLOS) connectivity and reliable communications in challenging environmental conditions.
The SA11-90-0.6VH/2178 antenna covers the entire frequency range 470-700MHz, meaning that it can be used in situations where a number of channels are spaced widely apart. With fewer antennas needed, operators and installers will incur lower inventory and installation costs.
The ‘White Space’ frequency band has been opened following the discontinuation of analogue television transmissions in some countries. The available frequencies have been allocated for both licensed and unlicensed uses producing exciting opportunities in long distance communication.
The UHF band is recognised for the ability to provide communications over large distances; across remote regions of land or sea; and good penetration in built-up areas. The band offers high data rates, making it extremely suitable for machine to machine (M2M) applications.