Búsqueda personalizada

Ruido

Dudas, comentarios sobre la teoria de instrumentacion electronica

Re: Ruido

Notapor blas » Jue, 15 Mar 2012, 11:47

The Y Factor Technique for Noise Figure Measurements 31 paginas en ingles
http://www2.rohde-schwarz.com/file_15856/1MA178_0E.pdf

1 Introduction ............................................................................ 3
1.1 Definition of Noise Figure............................................................................3
1.2 Overview........................................................................................................4
1.3 Required Equipment ....................................................................................4
2 Background Theory and Equations...................................... 5
3 Detailed Measurement Steps ................................................ 9
3.1 Calibration Step..........................................................................................10
3.2 Measurement Step .....................................................................................12
3.3 Calculation Step .........................................................................................13
4 Selecting an Appropriate Analyzer and Noise Source...... 14
5 Automating the Measurement............................................. 15
6 Calculating Measurement Uncertainty............................... 17
6.1 Uncertainty in the Cascaded Noise Figure Result ..................................18
6.2 Uncertainty in the Calibration of the Spectrum Analyzer Noise Figure19
6.3 Uncertainty in the Gain Measurement of the DUT ..................................19
6.4 Uncertainty in the ENR of the Noise Source ...........................................19
6.5 NF Measurement Uncertainty Example....................................................19
7 The Rohde & Schwarz Noise Figure and Uncertainty
Calculator.............................................................................. 22
7.1 Calculating Noise Figure and Gain...........................................................23
7.2 Testing the Guidelines to Ensure a Repeatable Result..........................24
7.3 Calculating Noise Figure Uncertainty ......................................................25
7.4 Measuring the Noise Figure of the Analyzer to Improve Uncertainty...26
7.5 Overview of Menus and Additional Features ..........................................27
blas
 
Mensajes: 201
Registrado: Mié, 15 Feb 2012, 19:50


Re: Ruido

Notapor blas » Jue, 15 Mar 2012, 11:52

Agilent Fundamentals of RF and Microwave Noise Figure Measurements 31 paginas en ingles
http://cp.literature.agilent.com/litweb ... -8255E.pdf

1. What is Noise Figure? ..............................................................................3
Introduction .......................................................................................................3
The importance of noise in communication systems ...............................4
Sources of noise ...............................................................................................5
The concept of noise figure ...........................................................................6
Noise figure and noise temperature .............................................................7
2. Noise Characteristics of Two-Port Networks .........................8
The noise figure of multi-stage systems .....................................................8
Gain and mismatch ..........................................................................................9
Noise parameters .............................................................................................9
The effect of bandwidth ..................................................................................10
3. The Measurement of Noise Figure ..................................................11
Noise power linearity ......................................................................................11
Noise sources ...................................................................................................11
The Y-factor method ........................................................................................12
The signal generator twice-power method .................................................13
The direct noise measurement method .......................................................13
Corrected noise figure and gain ....................................................................14
Jitter ..................................................................................................................14
Frequency converters ......................................................................................15
Loss ............................................................................................................15
Lo noise .....................................................................................................15
Lo leakage .................................................................................................15
Unwanted responses ..............................................................................15
Noise figure measuring instruments ............................................................16
Noise figure analyzers ............................................................................16
Spectrum analyzers .................................................................................16
Network analyzers ..................................................................................17
Noise parameter test sets .....................................................................17
Power meters and true-rms voltmeters ..............................................17
blas
 
Mensajes: 201
Registrado: Mié, 15 Feb 2012, 19:50


AnteriorSiguiente

Volver a Teoria

¿Quién está conectado?

Usuarios navegando por este Foro: No hay usuarios registrados visitando el Foro y 1 invitado

cron
Review foroingenieria.cajael.com on alexa.com