Signal and Noise Analysis of an MIMO-SSFA

Author

Broydé, Frédéric ; Clavelier, Evelyne

Author_Institution

Excem, Maule

Volume

56

Issue

6

fYear

2009

fDate

6/1/2009 12:00:00 AM

Firstpage

439

Lastpage

443

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;

fLanguage

English

Journal_Title

Circuits and Systems II: Express Briefs, IEEE Transactions on

Publisher

ieee

ISSN

1549-7747

Type

jour

DOI

10.1109/TCSII.2009.2020933

Filename

4982750