TRIPLE BAND GPS TRAP-LOADED INVERTED L ANTENNA ARRAY

摘要

The antenna includes four elements excited with equal amplitudes but with a relative phase difference of 0~, -90~, -180~, and -270~. Each element includ es 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.