NFP1003 [MICRONETICS]

HERMETIC MICROWAVE SURFACE MOUNT NOISE SOURCE; HERMETIC微波表面贴装噪声源


型号：	NFP1003
厂家：	MICRONETICS, INC.
描述：	HERMETIC MICROWAVE SURFACE MOUNT NOISE SOURCE HERMETIC微波表面贴装噪声源微波
文件：	总2页 (文件大小：76K)
中文：	中文翻译
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NFP1003 HERMETIC

MICROWAVE

S^URFACEMOUNT NOISE SOURCE

100 MHZ TO 3 GHZ

The NFP1003 Noise Source features

high ENR output in a small SMT

package, ideal for military and other

harsh environment applications.

The high output can allow for signifi-

cant circuit loss such as that caused

by power splitters, switches and

directional couplers, and still have

enough noise signal without addition-

al amplification.

All biasing circuitry is built-in making

it easy to design into your system.

The NFP1003 features a built-in volt-

age regulator for highly stable output

even if your DC supply lines are not.

NFP1003 TYPICAL DATA

SPECIFICATIONS

E N R

• Frequency:

• ENR:

100 MHz to 3GHz

100 MHz - 1 GHz 43 - 48 dB

1 GHz - 2 GHz

2 GHz - 3 GHz

41 - 46 dB

40 - 45 dB

• ENR Temp COEF: 0.04 db/^oC max

• VSWR: 2.0:1 max, On or Off state

• BIAS: +12 to +28Vdc @50mA max

COMMON APPLICATIONS:

• Hermetic Seal: 1x10^-7atm cc/s

• Operating Temp: -40 to +85 C

• Storage Temp: -54 to +125 C

Using noise for built-in test:

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

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.

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.

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

MICRONETICS, HUDSON, NH 03051 / TEL: 603-883-2900 / FAX: 603-882-8987 / NOISESALES@MICRONETICS.COM

WWW.MICRONETICS.COM

NFP1003 HERMETIC

MICROWAVE

SURFACE MOUNT NOISE SOURCE

100 MHZ TO 3 GHZ

OUTLINE DRAWING

USEFUL NOISE EQUATIONS

Calculating Y-Factor:

= N / N Where N is measured power output with noise source on and N is the measured

Fact 2 1 2 1

power output with noise source off.

Calculating noise figure from ENR and Y-Factor: NF(dB) = ENR (dB) - 10 log10 (Y

-1)

Fact

Converting ENR to noise spectral density (N ): 0 dB ENR = -174 dBm/Hz

Calculating noise power in a given bandwidth (BW) from noise spectral density: Power (dBm) = N + 10log(BW)

MICRONETICS, HUDSON, NH 03051 / TEL: 603-883-2900 / FAX: 603-882-8987 / NOISESALES@MICRONETICS.COM

WWW.MICRONETICS.COM

NFP1003 [MICRONETICS]

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