Philips "Exact" Reference GPS receiver design.
111 page PDF.
AN99068 - Designers Guide. EXACT GPS Low Cost reference Board (Version 
1.0)

This design is 7 years old and the implementation is dated by modern 
standards.
It nevertheless provides substantial insight into the inner workings 
of GPS systems (including antennas, LNA's and receiver proper) and is 
well worth at least a quick skim by any with any interest at all in 
the subject beyond 'just using the products'.

        http://www.semiconductors.philips.com/acrobat_download/applicationnotes/AN99068_1.pdf



        RM 

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