Using VNA for RF impedance and phase measurement

oven · Feb 10, 2003

Hi everyone:
Recently , I begin a project for RF Impedance Measurement,
Specially for antenna impedance. I plan use a wisdon resistance bridge to
measure gain&phase data.
analog device inc's ic ad8302 look like a good choose for this design,
who can give me some advice?

mwpro · Feb 12, 2003

Do you have a VNA? A single sweep does everything!

webdog · Feb 12, 2003

Shooting for both amplitude and phase, I guess you need a VNA, or vector network analyzer. This neat artcle would maybe fit your bill: www.circuitcellar.com/PSOC2002/winners/3.htm.
If you only want the amplitued, why not take a look at:
www.geocities.com/hagtronics/vhf_na/index.html or
www.page.sannet.ne.jp/kenjia/analyzer.html

At least you should get a fair idea how to build your own measuring instrument.

Good Luck and keep us posted on your progress

/WD

ajar2dtn · Feb 20, 2003

Try this article on DIY VNA

tungchang · Feb 20, 2003

ADS or Microwave office is fine.

cswang · Feb 25, 2003

How to use VNA to measure differential CKT impedence ? :?:

Using VNA for RF impedance and phase measurement

oven

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mwpro

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webdog

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ajar2dtn

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tungchang

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cswang

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Using VNA for RF impedance and phase measurement

oven

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