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GSM analog repeater in 900 MHz

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hamideh.ee

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hello there,

i am designing a GSM Repeater in 900 MHz and I really need help and some tips to select required RF ICs for BPF, Mixer , LNA , etc. could you please help me ?

i want some detailed information for block diagram of this system at least. i have studied some sources but i need more practical advice please. i am not sure about down link and up link frequecies that my sys should be capable of.

I really appreciate ur help
 

bubuta77

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Frequencies:
https://en.wikipedia.org/wiki/GSM_frequency_bands
Use SPF5043 as LNA and pre-driver amplifiers...
You can find a lot of SAW filters: Tai saw for example is greate.
You will need duplexers obviously..
if it's analog how you produce LO for mixers? (you need them for down\up converting for narrow\sharp filtering but it not always neccesary - depends on requieremnts)
Anyway you literaturally ask for people design repeater for you, no one will do it without money.
Good luck
 

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