RFN25L [MICRONETICS]

FULLBAND CALIBRATED MICROWAVE NOISE SOURCES; 富邦CALIBRATED微波噪声源


型号：	RFN25L
厂家：	MICRONETICS, INC.
描述：	FULLBAND CALIBRATED MICROWAVE NOISE SOURCES 富邦CALIBRATED微波噪声源微波
文件：	总3页 (文件大小：295K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Return to Noise Index

http://www.micronetics.com/Noise_Source/Coaxial_Waveguide.pdf

ULLBAND

CALIBRATED

ICROWAVE

NOISE

OURCES

L, S, C, X, K

, K, K

BANDS

1 GHZ TO 40 GH

ESCRIPTION

Micronetics' line of full band noise

sources are specially designed for easy

integration into microwave systems.

They feature rugged construction with

excellent long-term stability.

BANDS:

• L

• S

• C

• X

• Ku

• K

Configurable to your requirements:

Micronetics full band noise sources are

based on a coaxial design as the base

part. As standard options, noise

sources can be ordered with either

• Coaxial Isolator

• Ka

• Waveguide Output

• Waveguide Isolator

Each noise source is calibrated to the

output port so no external deembedding

of calibration data is necessary. In addi-

tion to the RF output choices, there are

also different packages available to

meet a wide range of mechanical con-

straints.

FULLBAND OUTPUT CHARACTERISTICS

FOR USE IN SYSTEMS

MODEL

FREQUENCY

RF OUTPUT

EXCESS NOISE

RATIO (dB)

STYLE

CODES

RFN25L

1.0 to 2.0 GHz

30(MIN) N,N1 Q, X, W, Y

25(MIN) N,N1 Q, X, W, Y

25(MIN)

25(MIN) N,N1 Q, X, W, Y

25(MIN)

RFN25S

RFN25C

RFN25C1

RFN25C2

RFN25X *

RFN25Ku

RFN25K

NS2640

2.0 to 4.0 GHz

4.0 to 8.0 GHz

3.95 to 5.85 GHz (waveguide only)

5.85 to 8.20 GHz (waveguide only)

8.0 to 12.4 GHz

12.4 to 18.0 GHz

18.0 to 26.5 GHz

26.5 to 40 GHz

N,N1 X, Y

PECIFICATIONS

■

Operating Temp: -55 to +95 C

Storage Temp:

Supply Voltage:

Temp Stability:

-65 to +125 C

+15 , +28 VDC

14 to 20 dB

See Chart

0.01 dB/ C

waveguide frequency is 8.2 to 12.4 GHz

Ouput Impedance: 50 ohm

^UGGED/S^TABLE

ESIGN

Peak Factor:

AVEGUIDE

5:1

The heart of these noise sources is a small chip and wire hermetic noise module.

This is embedded in the housing with a precision launch to the coaxial jack. This

design gives is much more stable and rugged than traditional coaxial noise sources

which rely on pill packaged diodes and beryllium copper bellow assemblies which are

not only are less reliable, but use hazardous materials.

HART

Model

Frequency

Waveguide

WR-187

WR-137

WR-90

RFN25C1 3.95 to 5.85 GHz

RFN25C2 5.85 to 8.20 GHz

RFN25X

8.20 to 12.4 GHz

RFN25Ku 12.4 to 18.0 GHz

WR-62

WR-42

WR-28

ALIBRATION AND

UALITY

SSURANCE

RFN25K

NS2640

18.0 to 26.5 GHz

26.5 to 40.0 GHz

Each noise source is accurately calibrated using a reference noise source traceable

to NIST/NPL Calibration data consists of 5 calibration points across the full-band.

Data is supplied as a print out. Special calibration data can also be supplied upon

request (consult factory). Standard choices are:

• More calibration points across the spectrum

• Special discrete calibration frequencies

• Data supplied in soft format as screen capture or text file on floppy

or CD-ROM.

In addition to the calibration data, a certificate of calibration and a certificate of con-

formance is supplied with each unit.

MICRONETICS / 26 HAMPSHIRE DRIVE / HUDSON, NH 03051 / TEL: 603-883-2900 / FAX: 603-882-8987

WEB: WWW.MICRONETICS.COM

http://www.micronetics.com/Noise_Source/Coaxial_Waveguide.pdf

FULL

BAND

MICROWAVE

NOISE

SOURCES

L, S, C, X, K

, K, K B

ANDS

SING

OISE FOR

UILT

IN-TEST

OW TO

RDER

There are three primary uses for employing a noise signal for built-in-test.

R F N 2 5 X - X X X

Model

1. Noise Temperature (noise figure) or Sensitivity Testing:

This test uses the noise source to supply a known excess noise ratio

(ENR) to a device under test for a Y-factor measurement. By taking two

receiver readings, one with the noise on and one with it off, Y-factor can

be determined. By knowing the ENR and Y-factor, one can calculate

noise temperature (figure) or sensitivity.

* waveguide not

available on S

and L models

L = L band *

S = S band *

C = C band

C1 = C band

C2 = C band

X = X band

Ku = Ku band

K = K band

Ka = Ka band

2. Frequency Response: The noise source being broadband

can be used as a replacement of a swept source to calculate frequency

response of a receiver or other device. By putting in a known spectral

signal at the input and taking a reading at the output, one can determine

the gain or loss over frequency of the entire system. Noise sources are

inherently extremely stable devices. In addition, the circuitry is much

simpler than a swept source which increases reliability and lowers cost.

Package

N = N package

Q = Q package

X = X package

Y = Y package

3. Amplitude Reference Source: The noise source can be

used as a known reference signal. By switching in the noise source from

the live signal, a quick test can be performed to check the health of the

chain or calibrate the gain/loss. For this test, noise can be injected into

the IF system as well as the RF to test/calibrate the path.

Option

0 = Plain

1 = Coax Isolator

2 = Waveguide

3 = Waveguide Isolator

For more information on using noise for built-in-test, read the Feb 2004

Microwave Journal article authored by Patrick Robbins of Micronetics.

http://www.micronetics.com/articles/microwave_journal_02-04.pdf

Bias Voltage

A = +28V

B = +15V

N S 2 6 4 0 - X X X

SEFUL

OISE

QUATIONS

Calculating Y-Factor:

= N / N Where N is measured power output with noise

Package

Fact

A = Lug package

B = BNC package

source on and N is the measured power output with noise source off.

Calculating Noise figure from ENR and Y-factor:

NF(dB) = ENR (dB) - 10 log10 (Y

-1)

Fact

Option

1= Coax Isolator, 2.92 mm (f)

2= Coax Isolator, 2.92 mm (m)

3= Waveguide

Converting ENR to Noise spectral density (N ):

0 dB ENR = -174 dBm/Hz

4= Waveguide Isolator

5= Plain, 2.92 mm (f)

6= Plain, 2.92 mm (m)

Calculating noise power in a given bandwidth (BW) from noise

spectral density:

Power (dBm) = N + 10log(BW)

Bias Voltage

A = +28V

B = +15V

NS2640 26.5 TO 40 GH

PA^htK^tp:A^//wG^wwIN^.mG^{icronetics.com/Noise_Source/Coaxial_Waveguide.pdf}

PTIONS

Outline Dwg

Bias Connector

Lug

Bias Voltage RF Output Type

Coax Isolator, 2.92mm (F) Connector

NS2640-A1A-70

NS2640-A2A-70

NS2640-A3A-70

NS2640-A4A-70

NS2640-A5A-70

NS2640-A6A-70

NS2640-B1A-70

NS2640-B2A-70

NS2640-B3A-70

NS2640-B4A-70

NS2640-B5A-70

NS2640-B6A-70

NS2640-A1B-70

NS2640-A2B-70

NS2640-A3B-70

NS2640-A4B-70

NS2640-A5B-70

NS2640-A6B-70

NS2640-B1B-70

NS2640-B2B-70

NS2640-B3B-70

NS2640-B4B-70

NS2640-B5B-70

NS2640-B6B-70

+28 Vdc

+15 Vdc

Lug

Coax Isolator, 2.92mm (M) Connector

Waveguide

Waveguide Isolator

Plain, 2.92 mm (M) Connector

Plain, 2.92 mm (F) Connector

Coax Isolator, 2.92mm (F) Connector

Coax Isolator, 2.92mm (M) Connector

Waveguide

Lug

BNC (F)

Lug

Waveguide Isolator

Plain, 2.92 mm (M) Connector

Plain, 2.92 mm (F) Connector

Coax Isolator, 2.92mm (F) Connector

Coax Isolator, 2.92mm (M) Connector

Waveguide

Waveguide Isolator

Plain, 2.92 mm (M) Connector

Plain, 2.92 mm (F) Connector

Coax Isolator, 2.92mm (F) Connector

Coax Isolator, 2.92mm (M) Connector

Waveguide

Waveguide Isolator

Plain, 2.92 mm (M) Connector

Plain, 2.92 mm (F) Connector

Lug

BNC (F)

Please consult factory for models without active links to drawings. Tel: 603-883-2900 x346 or email

noisesales@micronetics.com

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