The SiRF-3 based GM-318A GPS module is specially designed for the emerging PND application and other portable devices. Equipped with the slim patch antenna (18*18*2 mm), this attractive GPS module is only with 18*21*5 mm, which is tiny enough to be integrated in PND application. With on board antenna, it's simple and easy to use GM-318A without the headache of RF tuning and noise interference problem.
The GM-318A module is easily interfaced with main board of PND by 5-pin wire. A valuable power control mechanism is also implemented in GM-318A for power saving, which is useful in the portable device.