[SOLVED] RADAR Power supply clarification

[shashy.br]

Hi all,

I need to know if the selection Linear voltage supplies and the Switched supplies used for the Radar electronics will affect its performance.

I need clarification on selecting the power supply for my application ( Surveillance RADAR ).

will the switching noise generated cause any problem while receiving the transmitted waveform ?

I need to know if the switching noise added to the RF section be detected as a target.:???:

 

[tony_lth]

normally can't.
radar source should have a spec for on/off power ratio, that should be about 100dB. So no problem.

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And, from the time domain, the switch are very fast, it is about ns grade.
I remember I used Hittite switch.
In software, it must be waited the pulse rising edge or falling edge.
I am not SW engineer, so I don't know more details.

 

[captainshahid]

switching power supplies are more efficient than linear but generate emi interference to overcome this problem keep distance between power supply and practical circuit.

 

[jiripolivka]

You should specify your radar type to get a useful answer. If your radar is a pulsed RF version, you can use a switched power supply if its switching frequency is well different from your PRF. If your radar is a Doppler type, switching supply spectrum may be different to filter from the useful signal spectrum.

 

[shashy.br]

Thanks for the replies,

My application is for a pulsed Doppler radar,

 

[shashy.br]

Thanks for replying ,

I plan to use a switched power supply with a higher switching frequency,

That way i can remove the phase noise performance by using capacitors.