i try to make a gps receiver with maxim2741 i've got some instructions on
thanks:)
SioL
The max2741 is a GPS RF frontend. It outputs the IF signal in digital form. You will need also a baseband chip to build a GPS receiver.
Unless you are looking for a challenge, I would recommend you buy a GPS module. It is going to be cheaper than to buy the individual ICs.
The PCB layout for the RF part is quite critical and it is non-trivial to make it work at all.
Kind regards,
Iwo
i'll try to design the pcb layout by myself,thank you:) will anyone offer me a solution for gps-design with max2741,thanks:)
"Iwo Mergler =D0=B4=B5=C0=A3=BA
Maybe the evaluation board info will help you:
Matthew
The RF frontend (MAX2741) is only a small part of a GPS receiver.
It's almost like picking a single capacitor and ask for a design using "this capacitor".
The central piece of a GPS receiver is the baseband IC, which typically contains a processor, memory and dedicated correlator hardware.
To design a GPS receiver, you start with picking a baseband solution, considering required sensitivity, performance, etc.
You then look at the baseband datasheet to find out which RF frontend chip to use. I don't know what basebands support the MAX2741, but you could contact Maxim and ask.
Don't be mislead by Maxim's marketing claims for the single-chip GPS solution.
This is based on the assumption that you already have a baseband implementation in a system. There are several hardware/software tradeoffs possible.
Kind regards,
Iwo
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