User's Manual

Smart Machine Smart Decision
SIM5320_Hardware Design_V1.01 2011-11-10
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● High-sensitivity solution that works in all terrains: Indoor, outdoor, urban, and rural
● High availability that is enabled by using both satellite and network information
Therefore, while network solutions typically perform poorly in rural areas and areas of poor cell
geometry/density, and while unassisted, GPS-only solutions typically perform poorly indoors. The
SIM5320AD GPS solution provides optimal time to fix, accuracy, sensitivity, availability, and reduced
network utilization in both of these environments, depending on the given condition.
3.9.3 Application Guide
Users can adopt an active antenna or a passive antenna as GPS signal transceiver. In this document, all
GPS specification mentioned is from passive antenna. The following is the reference circuit.
Figure 27: Active antenna circuit
Figure 28
：Passive antenna circuit (Default)
In above figures, the components C1 and L1, L2 are used for antenna matching, the values of the