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Abstract #1592

Studying Bandwidths of Balancing Preamplifier Decoupling Networks

Rasmus Alexander Jepsen1, Jan Henrik Ardenkjær-Larsen1, and Vitaliy Zhurbenko1
1Technical University of Denmark, Kongens Lyngby, Denmark

Synopsis

Keywords: RF Arrays & Systems, RF Arrays & Systems, matching networks, baluns, common-modes, noise matching, preamplifier decoupling

Motivation: Lattice baluns are traditionally used in receive arrays to achieve common mode rejection and preamplifier decoupling. They, however, are limited to real impedance transformations only.

Goal(s): New matching networks are sought that achieve noise matching and preamplifier decoupling, as well as common-mode rejection.

Approach: In this abstract, new network topologies are introduced and their bandwidths are studied.

Results: In addition to being more compact, the new networks offer a wider bandwidth as well as higher common-mode rejection. Thus, it is expected that the new networks are more resilient to component tolerances and loading effects, and they may enable multinuclear imaging.

Impact: New topologies of preamplifier decoupling networks with integrated balun functionality are introduced. They offer wider bandwidth and higher common-mode rejection compared to traditional networks.

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