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Question about attenuation

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hamed333

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Hi, I want to measure the insertion loss of power divider with signal generator and signal analyzer, so why should we use 10 db attenuation at output port?
 

Dan Mills

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Because 10dB pad will have a return loss of 20dB adding one helps to ensure that the impedance seen by the DUT is close to 50 ohms resistive.

73 Dan.
 

vfone

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If you want to characterize accurately the insertion loss of a power divider (or a splitter), actually you have to provide AT ALL 3 PORTS a 10dB attenuator to get good resistive impedance at those ports.
 
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