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Dual Band GSM Filters

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kommanche

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Hi,

Do you have any idea about dual band GSM filters like one passband around 900 MHz and other passband around 1800 MHz? Where can I find such a component?

Actually I am also curious how cell phones operate dual band?

Thanks,
 

kommanche said:
Hi,

Do you have any idea about dual band GSM filters like one passband around 900 MHz and other passband around 1800 MHz? Where can I find such a component?

Actually I am also curious how cell phones operate dual band?
Thanks,
Click to expand...

I guess at cell phones you have two different RF chains. At least when i do dual band GSM repeater it was designed that way.
 
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