GMM-U1 Datasheet, PDF (24/36 Pages) List of Unclassifed Manufacturers – GPS Module

GlobalTop Technology
Gmm-u1 Data Sheet
24 _{Ver. V0G}
4. Reference Design
This chapter introduces the reference schematic design for the best performance.
Additional tips and cautions on design are well documented on Application Note, which is
available upon request.
4.1 Reference Design Circuit
Patch Antenna Application
Notice:
1. Ferrite bead L1 was add for power noise reduction.
2. C1 and C2 decoupling capacitor should put near module.
For C1, the value depends on system noise, range 1uF~100uF is reasonable.
3. Damping resistors R1, R2, R3, R4 and R5 should be fine-tuned for system application.
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