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    RF Front-end Performance Parameters

    What are the performance parameters and design challenges of RF front end stages/blocks?

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    Re: RF Front-end Performance Parameters

    selectivity, sensitivity, have low noise etc.........
    achieving all these are the design challenges!!!
    What are u intended to design anyway??
    If you Believe everything you Read, Better Don't Read!


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    Re: RF Front-end Performance Parameters

    Thank you for your response. I am carrying out preliminary studies for my research work in matching network and filters pertaining to rf front end. I am interested to know how the performance parameters are inter related and how optimum solution is achieved.



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    Re: RF Front-end Performance Parameters

    At first Fn ( or T, equivalent noise temperature ) and linearity. Linearity that is input P1 IP3 and as function FEM dynamic range. Mirror channel selectivity if necessary performances of the preselector filter. And third all kind in and out unwanted channels and emissions. It is very briefly.
    Last edited by Bob60; 21st November 2013 at 12:23.


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    Re: RF Front-end Performance Parameters

    With improper matching b/w modules of RF front the signal would be loss due to attenuation, with better filtering you can increase selectivity & decrease Noise.
    Google and u will find different practical designs of RF fronts/ Receivers which will help more to understand relations b/w selectivity, sensitivity, Gain, Dynamic Range, etc....
    If you Believe everything you Read, Better Don't Read!


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    Re: RF Front-end Performance Parameters

    Quote Originally Posted by Ow@i$ View Post
    with better filtering you can increase selectivity & decrease Noise.
    Cool I never know. If I add additional filter to a FEM and my Fn should decrease.It would be grate!!! From 2.5-3dB to -3dB??? That is something very fundamental.
    Last edited by Bob60; 21st November 2013 at 15:32.



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    Re: RF Front-end Performance Parameters

    Quote Originally Posted by Bob60 View Post
    Cool I never know. If I add additional filter to a FEM and my Fn decrease it will be grate!!! From 2.5-3dB to -3dB??? That is very fundamental.
    Please Explain what are u trying to tell us it is not so clear???
    If you Believe everything you Read, Better Don't Read!



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    Re: RF Front-end Performance Parameters

    Quote Originally Posted by Ow@i$ View Post
    tell us it is not so clear???
    You are a plural? You should launch space craft as quick as possible to a deep deep space, until you have benefits with NF . More filters, more benefits and less NF for front end modules.
    Last edited by Bob60; 21st November 2013 at 17:00.



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    Re: RF Front-end Performance Parameters

    Quote Originally Posted by Bob60 View Post
    You are a plural? You should launch space craft as quick as possible to a deep deep space, until you have benefits with NF . More filters, more benefits and less NF for front end modules.
    "us"' is for referring to all those who didn't understand what u r saying!!! with due respect if u know something, better guide those who don't know, rather starting Sarcasm with things like "You should launch space craft as quick as possible to a deep deep space, until you have benefits with NF . "
    its not a social media website, its a professional environment better behave like one and present your point in a more professional way rather sarcastic way !!!!
    If you Believe everything you Read, Better Don't Read!



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    Re: RF Front-end Performance Parameters

    Quote Originally Posted by Ow@i$ View Post
    its not a social media website, its a professional environment
    Yes your right and topic story is about Front-end Performance Parameters. And on a picture is typical ( kitchen made ) 40GHz front -end module example. Not right bondable gold and as result I was able little bit helps for 1mil gold connection wire additional soldering.
    Last edited by Bob60; 22nd November 2013 at 12:43.



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    Re: RF Front-end Performance Parameters

    Thank you for your support and guidance. Can someone refer to books and other materials to develop better understanding and preliminary work.



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    Re: RF Front-end Performance Parameters

    "ARRL - Experimental Methods in RF Design"
    is a good RF book not just for RF front end but covers other RF topics also and quite practically!!!
    If you Believe everything you Read, Better Don't Read!



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    Re: RF Front-end Performance Parameters

    Thank you for suggesting me a book pertaining to the area. I will go through it to develop basic ideas and try to explore ongoing research in the field so that I can narrow down within my research area.



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    Re: RF Front-end Performance Parameters

    Here is some classics Front-End circuit for 10-12GHz . Could be usefully.
    By the way NXP s are very confident in such thinks, you can check out.
    Last edited by Bob60; 25th November 2013 at 17:19.



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    Re: RF Front-end Performance Parameters

    Thank you for the block diagram. It will help me in comprehending the front end.



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