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Figure 4: Mechanical Specifications
5
Layout
This section provides important information for designing a reliable and sensitive GPS system.GPS
signals at the surface of the Earth are about 15dB below the thermal noise floor. Signal loss at the
antennaand the RF connection must be minimized as much as possible. When defining a GPS receiver
layout, the placement of the antenna with respect to the receiver, as well as grounding, shielding and
jamming from other digital devices are crucial issues and need to be considered very carefully.
Paste Mask
5.1
Figure 5 shows the recommended positioning of the Paste Mask, the Copper and Solder masks. These
are recommendations only and not specifications. Note that the Copper and Solder masks have the
same size and position.
To improve the wetting of the half vias, reduce the amount of solder paste under the module and
GTS-4E GPS Module Hardware Integration Manual
Page 15 of 22
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