Title :
Signal and Noise Analysis of an MIMO-SSFA
Author :
Broydé, Frédéric ; Clavelier, Evelyne
Author_Institution :
Excem, Maule
fDate :
6/1/2009 12:00:00 AM
Abstract :
This brief describes the influences of the source and load impedance matrices on the main small-signal and noise characteristics of a multiple-input-port and multiple-output-port (MIPMOP) device. Expressions for the noise figures of an MIPMOP device are provided in the impedance and admittance representations. We define the natural noise figures as the noise figures evaluated in the case where the multiport source behaves like a noisy passive network at the temperature T 0. This theory is applied to a multiple-input and multiple-output series-series feedback amplifier (MIMO-SSFA), some characteristics of which are computed and measured.
Keywords :
MIMO systems; feedback amplifiers; low noise amplifiers; passive networks; feedback circuits; load impedance matrices; low noise amplifier; multiple-input- and multiple-output series-series feedback amplifier; multiple-input-port- and multiple-output-port device; noise analysis; noise figure; noisy passive network; source impedance matrices; Amplifier noise; amplifiers; feedback circuits; low-noise amplifier (LNA); multiple-input and multiple-output (MIMO) systems; noise figure;
Journal_Title :
Circuits and Systems II: Express Briefs, IEEE Transactions on
DOI :
10.1109/TCSII.2009.2020933
