Af Dut_Bw; Af = 10 × Log - Keysight Technologies N9040B UXA Manual

Making Noise Figure Measurements
Using the U7227-Series USB Preamplifiers in Noise Figure Measurements
Table 2-3
Specification
Frequency
Gain (dB)
Noise Figure
Table 2-4
Spec
(nominal)
Gain (dB)
(.Max)
Noise Figure
Examples for Using the Guide to Find the Test System Configuration
This section gives an example of using the
Test System Configuration" on page 42
configuration
DUT with Frequency Ranges below 3.6 GHz
The DUT characteristic is as below:
The DUT bandwidth is:
DUT_BW
The bandwidth adjust factor is:
46
Noise Figure and Gain Specification of the U7227-Series
USB Preamplifier
U7227A
10 MHz to 4 GHz
> 16 (10 to 100 MHz)
b
> 0.5 F + 17 (100 MHz to 4 GHz)
< 5.5 dB (10 to 100 MHz)
< 5 dB (10 MHz to 4 GHz)
a. Specifications are tested and measured on an operating temperature of 23 °C.
b. "F" signifies frequency in GHz.
Noise Figure and Gain Specification of the NFA X-Series
Noise Figure Analyzer
DUT NF: 5 dB
DUT gain: 30 dB
Frequency range: 1 to 2 GHz
9
Hz
1 10
×
=
9
DUT_BW
AF 10 log 3.59 10
× ( × ⁄ (
=
a
U7227C
100 MHz to 26.5 GHz
> 0.26F +16.1
(100 MHz to 26.5 GHz)
< 6 dB (100 MHz to 4 GHz)
< 5 dB (4 to 6 GHz)
< 4 dB (6 to 18 GHz)
< 5 dB (18 to 26.5 GHz)
NFA X-Series Noise Figure Analyzer
20 dB (100 kHz to 3.6 GHz)
35 dB (3.6 to 26.5 GHz)
40 dB (26.5 to 40 GHz)
13 to 14.5 dB (100 kHz to 3.6 GHz)
9 dB (3.6 to 8.4 GHz)
10 dB (11 to 18 GHz)
(DANL+176.24 dB) (>13.6 GHz)
"Rough Guide for the Noise Figure
to find a proper test system
dB
5.55
) )
=
N9069C Noise Figure Measurement Guide
U7227F
2 to 50 GHz
> 0.23F + 16.5
(2 to 50 GHz)
< 10 dB (2 to 4 GHz)
< 8 dB (4 to 40 GHz)
< 9 dB (40 to 44 GHz)
< 10 dB (44 to 50 GHz)