SNR Degradation in Receive Arrays Due to Preamplifier Noise Coupling and a Method for Mitigation

Keywords

abstract achieve achieved acquiring active additional adjusted almost antenna antennas application applying arranged array arrays assumed attributable authors biomedical body broadband brown cable capacitance characterizing coil coils combination combined commonly conditions configuration consistent contribution contributions correlation count coupled coupling decoupling deep degradation deliberately design designs detailed determine detuned diagonal dominant drop dropped efficacy elements examine excitation exhibit extreme extremely field final function generated gradient graham impedance impedances improvement increasingly individual individually inductive input lattice legacy lengths loaded loading loss losses lost maintain match matched matching matrix measured medical mitigated mitigation much mutual nature nearest neighboring neighbors next noise nothing occur ohms optimal optimum overmatching parallel phantom placed preamp preamplifier presence primarily probe projects prop receive reconstruction recover recovering rectangular reduced remaining removed represents required respectively saved scanner series slice slightly square starting still strategy strong substantial suggests theoretical theory thesis though trans transistor treatment trio uncombined unloaded usually various wheeler zero