Microwave Noise Source Generators

  

Noise Sources supply white gaussian electronic noise.  The output is a flat instantaneous broadband electronic random noise.  The noise source converts a DC input to noise.  Units are available in bands between 10MHz thru 26.5 Ghz.
The noise source provides a small efficient source of RF energy.  It is highly stable over time and can operate over a wide temperature range.  It has long term stability.
ATM offers Microwave Noise Generators which can be used in a variety of applications including Noise Figure Measurement, Jamming for military purposes, and Self Test for radars and other systems.   Please call us with your requirements and discuss your needs with one of our design engineers.

 

Product Details:

  • Input power +28 volts, 25ma. max.
  • Input voltages as low as 15 volts are available in most models, consult factory for details.
  • Currents are typically less than 10ma
  • Noise output variation with temperature less than 0.01 DB/°C
  • Noise output variation with voltage less than 0.1 dB/%V
  • Operating temperature range -55°C to +85°C
  • Noise output rise time and fall time < 1 usec
  • The output levels can be typically as high as -85DBM/MHz
    Since noise sources have broadband output levels of power they must be rated per bandwidth.
  • Well matched noise sources typically have an output level of -99 dBM/MHz
    An alternate way of rating noise output levels is in dB ENR.  The above referenced levels are approximately 30 dB ENR and 15 dB ENR respectively.  ENR is used for Excess Noise Ratio. Higher outputs can be attained by means of amplification.
    Other options exist at very low frequencies.
  • Noise diode is hermetically sealed.
  • All housings can be supplied with threaded mounting holes.

Basic Relationships
 • dB ENR = 10 log((T1/T0)-1)

 • Pn = KTB

 • T0 = 290K

 • T is in degrees KELVIN

 • K = 1.38x10(-23 power)

 • B is in Hertz

 • Excess Noise Ratio = ENR

 

 

15.5 db ENR Noise Sources - SMA

R, X, and T Packages

HOUSING:

.75" X .75" X 3.4" (Max.)
DC INPUT: BNC (F) CONN.
RF OUTPUT: SMA (M) CONN.

Note: T Package models have 2.9mm (M) output connectors

Freq (GHz)

Noise Output

 ENR (dB)

VSWR Max.
ON/OFF

Calibration
Frequencies

Model No.

Package*
Code
0.01 - 0.15 15.5 +/- 1.0 1.20:1 10, 70, 140, 150 MHz NX1501R R
0.01 - 1.60 15.5 +/- 1.0 1.20:1

10, 70, 140 MHz

0.5, 1.0, 1.6 GHz

 NX1502R R
1.0 - 2.0 15.5 +/- 0.5 1.20:1 0.5 GHz increments NX1512X X
2.0 - 4.0 15.5 +/- 0.5 1.20:1 1.0 GHz increments NX1524X X
4.0 - 8.0 15.5 +/- 0.5 1.20:1 1.0 GHz increments NX1548X X
8.0 - 12.0 15.5 +/- 0.5 1.35:1 1.0 GHz increments NX15812X X
12.0 - 18.0 15.5 +/- 0.5 1.35:1 1.0 GHz increments NX151218X X
18.0 - 26.5 15.5 +/- 1.0 1.35:1 1.0 GHz increments NX151826T T
2.0 - 26.5 15.5 +/- 2.0 1.35:1 1.0 GHz increments NX15226T T
2.0 - 38.0 15.5 +/- 2.0 1.35:1 1.0 GHz increments NX15238T T
26.5 - 38.0 15.5 +/- 1.0 1.35:1 1.0 GHz increments NX152638T T
26.5 - 40.0 15.5 +/- 2.0 1.35:1 1.0 GHz increments NX152640T T

Package Exchangeability

R

 may be swapped with: S
X may be swapped with: Y
T may be swapped with: V

*R or S, X or Y, T or V packages may be interchanged depending on input connector requirements.

Model number is modified by changing the suffix letter. Ex. NX1512X becomes: NX1512Y

 

15.5dB ENR Noise Sources - Type N

 Z- Package
HOUSING: .94" X .81" X 4.2" (Max.)
 DC INPUT: BNC (F) CONN.
RF OUTPUT: TYPE-N (M) CONN.
Freq (GHz) Noise Output
ENR (dB)		 VSWR max
ON/OFF		 Calibration
Frequencies		 Model No. Package
Code*
1.0 - 4.0 15.5+/-0.5 1.25:1 1.0 GHz increments NX153EZ Z
2.0 - 8.0 15.5+/-0.5 1.25:1 1.0 GHz increments NX154FZ Z
1.0 - 12.4 15.5+/-0.5 1.25:1 1.0 GHz increments NX153GZ Z
4.0 - 12.4 15.5+/-0.5 1.25:1 1.0 GHz increments NX155GZ Z
1.0 - 18.0 15.5+/-1.2 1.35:1 1.0 GHz increments NX153HZ Z

*Models offered in package Z are only available in this package, no X or Y substitution can be made. 

 

High Output ENR / High Freq. Noise Sources

S, Y, and V Packages
HOUSING: .5" X .5" X 2.84" (Max.)
DC INPUT: SMA (F) CONN.
RF OUTPUT: SMA (M) CONN.

Note: V Package models have 2.9mm (M) output connectors

Freq (GHz)

Noise Output

ENR (dB)

Noise
Flatness (dB)

Calibration
Frequencies

Model No.

Package*
Code
0.01 - 0.15 30 - 36 +/- 2.0 10, 70, 140, 150 MHz NX3201S S
0.01 - 1.60 30 - 36 +/- 2.0

10, 70, 140 MHz

0.5, 1.0, 1.6 GHz

 NX3202S S
1.0 - 2.0 30 - 35 +/- 1.0 0.5 GHz increments NX3212Y Y
2.0 - 4.0 30 - 35 +/- 1.0 1.0 GHz increments NX3224Y Y
4.0 - 8.0 30 - 35 +/- 1.0 1.0 GHz increments NX3248Y Y
8.0 - 12.0 28 - 33 +/- 1.0 1.0 GHz increments NX32812Y Y
12.0 - 18.0 26 - 32 +/- 1.0 1.0 GHz increments NX321218Y Y
18.0 - 26.5 23.0 +/- 1.5 +/- 1.0 1.0 GHz increments NX321826V V
2.0 - 26.5 23.0 +/- 2.0 +/- 2.0 1.0 GHz increments NX32226V V
2.0 - 38.0 20.0 +/- 2.0 +/- 2.0 1.0 GHz increments NX32238V V
26.5 - 38.0 22.0 +/- 1.5 +/- 1.0 1.0 GHz increments NX322638V V
26.5 - 40.0 22.0 +/- 1.5 +/- 1.0 1.0 GHz increments NX322640V V

Package Exchangeability

R

 may be swapped with: S
X may be swapped with: Y
T may be swapped with: V

*R or S, X or Y, T or V packages may be interchanged depending on input connector requirements.

Model number is modified by changing the suffix letter.

Ex. NX3224Y becomes: NX3224X

 

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