I can't find any GPS+GLONASS SAW filter available in the market

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d3nisdantas

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I've been looking for an appropriate SAW filter that has a small loss for both GPS and GLONASS frequencies, without success. I just found this one: https://www.digikey.com/product-detail/en/taiyo-yuden/F6QB1G585P2BQ-J/587-3344-1-ND/4157879 and a similar model at digikey. However its datasheet says that its output impedance is 100 ohms.

Could anyone give me suggestions on this? Bellow is a table with some recommendations given by my GNSS module manufacturer, but none are currently available.

https://obrazki.elektroda.pl/3754807500_1465259963.jpg

Best Regards,

Denis
 

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that is a pretty poorly written data sheet, but I would guess they mean it is 50 ohm input 100 ohm output, intending you to use it to drive a differential RF input to a chip? i.e. if you have two 50 ohm RF inputs differential....you would dive it with a 100 ohm source?
 

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