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Receiver Sensitivity

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FAYIQA NAQSHBANDI
(joined April 2015)
Spectator

HI EVERYONE…
I have a query regarding receiver sensitivity..if our receiver sensitivity is -30 dbm does that mean that our receiver can pick signals whose power levels are upto -30 dbm..and in case we make the receiver sensitivity equal to -100 dbm will that mean i am increasing the receiver sensitivity or decreasing receiver sensitivity..i wud appreciate ur help..
Thanks and regards
fayiqa naqshbandi

Responses (25):

    • April 12, 2016 at 4:18 pm #36487
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      Ankita Sharma
      Participant

      Hi pooja,

      I agree with fayiqa,She is right in mentioning that if you want your receiver to be less sensitive then choose low negative value else higher negative value. Hope this helps..

      Regards
      Ankita

    • April 13, 2016 at 1:03 am #36509
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      pooja rawat
      Participant

      Hi Ankita.

      Thank you for your concern. I guess i got it. I shall see accordingly now.

      Regards

    • April 13, 2016 at 1:49 am #36512
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      Ankita Sharma
      Participant

      Hi Pooja,

      You are welcome and I am glad to know that your query has been resolved on the forum…
      All the Best

      Regards
      Ankita

    • April 13, 2016 at 1:54 am #36513
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      pooja rawat
      Participant

      Thanks Ankita 🙂

    • April 15, 2016 at 7:18 am #36879
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      Rajguru M. Mohan
      Participant

      Hi Fayiqa,

      The responsivity of a photodetector is usually expressed in units of either amperes or volts per watt of incident radiant power.

      R = Eta* lambda (in micrometer)/1.24
      eta is the quantum efficiency.
      It is the ratio of output current or voltage to Radiation power input to photodiode.

      Seeking your response.

      +3

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