Triple band GPS trap-loaded inverted L antenna array

The antenna includes four elements excited with equal amplitudes but with a relative phase difference of 0°, -90°, -180°, and -270°. Each element includes a vertical and horizontal portion. An RF trap filter is located within the horizontal portion so that the antenna provides good gain coverage at all three frequency bands of a modernized global positioning system.

Patent #: 6856287 Issue Date: February 15, 2005