can you give me some advice about gps front end?

i want to design a gps receiver front -end, i want to use the ready made chips, can you tell me useful information?

Maybe Atmel Front end ics are usefull for You!

Check in:
http://www.atmel.com/products/GPS/

Devices:
ATR0600 GPS Front-end IC

ATR0610 2.7-V GPS Low-noise Amplifier

ATR0620 GPS Baseband Processor

ATR0640 GPS Baseband Processor


Gorkin.