A radiation pattern diversity antenna operating at the 2.4 GHz ISM band

A novel planar antenna operating in the 2.4 GHz ISM band whose radiation pattern can be switched by changing the frequency channels of the operating band is proposed here. This is achieved by merging the different radiation modes of the antenna together within a single operating band, in contrast to the conventional procedure of covering the whole band with a single radiation mode. Using this method a single antenna can provide radiation pattern diversity across the operating band without an external switching mechanism. This proposal improves the connectivity significantly when the link is dynamic. The channel selection algorithm can be modified accordingly where the channels can be pre-mapped for expected Direction of Arrival (DoA) of specific links. Depending on the standards assumed, a certain number of channels are used for directing the maximum radiation at φ = 0°, θ = 8°, while the rest is suitable for directing the main beam at φ = 0°, θ = 72°.