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Network Analyzer Measurements at different frequencies - RF Cafe
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Post subject: Network Analyzer Measurements at different frequencies
Posted: Tue Dec 15, 2009 11:24 am
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Joined: Tue Dec 15, 2009
10:22 am
Posts: 9 |
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Hello everyone
I have certain experience
characterizing microwave devices implemented in
microstrip technology and working between 1GHz and
10GHz employing network analyzers.
Now I
need to perform some measurements of circuits based
on piezoelectric resonators and working around 1
MHz. I wil use an Agilent Network analyzer which
operates from 300kHz up to 3GHz. I'm not sure about
the differences that measurements at so low frequencies
imply.
Could anybody tell me some considerations
I should take into account?
Thank you very
much
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SunshineDesign |
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Post subject: Re: Network Analyzer Measurements at different frequencies
Posted: Tue Dec 15, 2009 12:52 pm
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Joined: Sat Nov 08, 2008
11:35 pm
Posts: 30
Location: Ramona, CA
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I have used most all the VNA's from 40GHz down to
the low end depending on the instrument. In your
case 300KHz.
The only thing different is that
as the measurment approaches the band edges of the
couplers the coupler performance (directivity particularily)
degrades and this has an impact on the error bar
for the measurement. The Data Sheets should give
you some idea of the accuracy hit. Other than that
the measurements are not much different. Make sure
you set the IF Bandwidth down to something lower
100-1KHz instead of the default. This will give
you a better S/N ratio on the measurements as you
don't integrate as much noise into the measurement.
_________________
Sunshine Design Engineering
Services
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Measures |
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Post subject: Re: Network Analyzer Measurements at different frequencies
Posted: Fri Dec 18, 2009 7:42 am
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Joined: Tue Dec 15, 2009
10:22 am
Posts: 9 |
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Posted 11/12/2012
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