Técnica de mejora del ancho de banda efectivo en el módulo posterior del radiómetro Planck

Abstract

The description of the design, implementation and test results of MMIC low noise amplifiers and their integration to built the RF part of the Q-band Back-End Module (BEM) of the Planck mission is presented. Mismatching between amplifiers has been analysed in order to know its contribution in the ripple of the transducer power gain and therefore the effect in the effective bandwidth. The ripple due to mismatching has been reduced through an attenuator between amplifiers. A microstrip attenuator without vias has been designed and tested. An improvement in the RF BEM effective bandwidth has been achieved after integrating the attenuator between amplifiers.