Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

noise figure measurement of the attenuator

Status
Not open for further replies.

hellotxn

Member level 4
Joined
Dec 11, 2003
Messages
79
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,288
Activity points
581
noise figure attenuator

In theory the noise figure of an attenuator is its loss, but is it possible to measure the noise figure of an attenuator in the experiment?

Thanks!
 

sergio mariotti

Advanced Member level 1
Joined
Dec 22, 2003
Messages
468
Helped
69
Reputation
138
Reaction score
25
Trophy points
1,308
Location
Italy
Activity points
5,996
Yes , it is.
You can observe the measured value on the The Noise Figure Meter. Once it's calibrated, if You put a 2 dB pad, You'll read NF=2dB and Gins=-2dB.

But:
1) formally speaking, this happens only if the noise figure meter, the attenuator, the Noise Source and the Temperaure variable wrote inside, are all placed at 290K (phisycal temperature).

2) In the case You are thinking to calibrate or check the ENR... The use of a well known and calibrated attenuator cannot give any informations in order to calibrate the ENR.
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top