Being manner and the device null feedforward poly carrier power amplifiers which the intermodulation component

摘要

(57) with a novel array antenna to be used to attach the amplifier as [Abstract] improved the structure of the feed-forward multi-carrier power amplifier is improved is described. This amplifier is improved, can be controlled independently unwanted intermodulation products generated in the amplifier inside. When used in the novel array structures radiation lobe of the individual, including unwanted intermodulation components can be varied independently of the direction of the main radiation lobe. When used in a cellular base station, it is possible to direct in a direction away from the main radiation lobes, the radiation lobe containing the unwanted intermodulation components, it is possible to spatially filtering unwanted signal. For example, radiation lobe containing the unwanted intermodulation components may change direction quickly in time in time using a function similar to the noise, it is statistically averaged interference in the direction of the necessary communication possible.