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Massive attenuation when using HMC253QS24 switch below 25 MHz

Question asked by JesseBLI on Aug 24, 2017
Latest reply on Sep 13, 2017 by s.ilke

Hi,

 

I am using the HMC253QS24 RF switch to serially modulate a set of lasers.

 

The problem I am running into is that when I try to pass RF below ~25 MHz, my signal becomes massively attenuated. This does not happen when I remove the RF switch from my system. Please see my crude illustration of the problem (attached). Am I missing something? Unless I am reading this wrong, the switch should be able to pass anywhere from DC to 2.5 GHz RF signals.

 

Kind regards,

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