For equipment for 3.5 GHz specifications have been given for what a radiation pattern shall look like in the ETSI EN 302 085 standard. Requested Pattern Envelope (RPE) is defined for client antennas (Terminal Station ,TS) and base stations (Central Station, CS). For these two types of antennas there are a number of classes TS1-TS5 and CS1-CS3, with different demands on attenuation of side lobes, F/B ratio and cross polarisation.
How these demands affect actual performance in 3.5 GHz networks, depends largely on how the network is designed. When building sites with very many access points, one might want to achieve the best possible isolation between the antenna systems. We have put the masks for TS1-TS5 and CS2-CS3 into PolPlot. It is possible to plot these together with data for a specific antenna. Below is shown eg how a parabolic dish SP45/34 fulfils the demands for TS3, co-pol. |
