The 3997D surface mount GPS Antenna provides high performance in a very small form factor. It features a custom designed ceramic patch element that minimizes detuning effects caused by adjacent objects. This element, along with a low noise ampli? er and SAW ? lter, enables the 3997D to provide a consistent, clear signal while minimizing loss-of-lock when GPS conditions are less than ideal. The 3997D is housed in a very compact all-plastic, noncorrosive low pro? le package. The 3997D is ideal for permanent installations in asset tracking and timing syncronization where performance and size are critical factors.