Colloquium Abstract - Monasterio - 2025May16

May 16, 2025

11:00am Mountain

David Monasterio (NRAO CDL)

 

Multiband architecture applications for the next-generation heterodyne receivers

 

Abstract

During the last decade, there has been increasing interest in developing new receiver architectures for the next generation of radio astronomy instrumentation to reduce the observation time and study new science cases that require more instantaneous bandwidth. In this presentation, we will discuss the possible applications of multiband architecture in millimeter and submillimeter-wave heterodyne receivers. We will introduce the multiband architecture, studying its advantages and limitations, and giving some practical examples already in existence. Then, we will discuss its main frequency-splitting elements, where we will analyze different types of multiplexer designs and their effect on receiver sensitivity obtained by a non-linear harmonic balanced model, including the effects of all receiver components. We will also discuss some applications of multiband technology, including a prototype contiguous bandwidth multiband receiver using digital sideband separation and the possibility of digital recombination of signals coming from different bands to increase sensitivity at the band edges..


Local Host: Wes Grammer

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