GPS Module Antenna and RF Desi...

DeLorme_Antenna_RF_DesignTwo DeLorme Drive Yarmouth, ME 04096 (Phone) 800-293-2389 (Fax) 207-846-7054 www.delorme.com

GPS Module Antenna and RF Design Guidelines

December 2007
You can eliminate much of the requirement for complex RF design by using a GPS receiver module, but the signal path from the antenna to the module RF-input is still a critical part of the board design that can have a big impact on the system performance. A simple RF-signal path is not difficult to design provided you follow some basic guidelines and use a software design tool for the geometry calculations. The following is intended to summarize the basic RF design guidelines and give examples for proper layout and antenna-to-module RF signal path design. Choosing an Antenna As a general rule of thumb, when the antenna is located within 6”