Microwave equalizer with internal amplitude correction

• Main Authors: Caceres Armendartz, José Luis, Delgado Cabello, Silvia, Hidalgo Carpintero, Isidro
• Format: Patent
• Language: English
• Published: 26.02.2002

The present invention relates to a microwave equaliser with internal amplitude correction, preferably for application in satellite communications. More specifically, the invention relates to a microwave equaliser comprising resonant cavities, operating in a reflexive configuration, and having tuning means to achieve equalising of the distortions that can arise during the transmission of a signal, in both group delay and in amplitude. The present invention is particularly useful for applications which require very precise, high quality equalisation, in both group delay and in amplitude, as for example in the case of channel filters normally employed in satellite communications payloads. Microwave equalizer with internal amplitude correction, preferably for application in satellite communications, comprising at least one resonant cavity (), at least one incoming signal injector () that projects into said resonant cavity () for injecting signal into said resonant cavity (), and at least a first resistive tuner (). The position of said first tuner () with respect to said injector () produces electromagnetic coupling between both tuner () and injector (), giving rise to an amplitude attenuation effect in said signal. A variation in said relative position between said means the first resistive tuner and injector permits changing said attenuation in a selective manner. A second resistive tuner () can be used in combination with the first resistive tuner () to optimize the response of the equalizer.