UniTraQ International Corp.
RoHS compliance
2009, 04, Version 1.2
6
Eastern Star 5 series GT-525
GPS Module
5. ON BOARD PATCH ANTENNA
(1) (2)
(1) 3D view of radiation pattern looking along the Y axis in the XZ plane
(2) 3D view of radiation pattern looking along the Z axis in the XY plane
When the
GT-525
designed would be placed into a device, its patch antenna surface orientation shall be
vertically upturned to the sky. Also, shouldn’t put metal on the antenna above and selected suitable material
for converge the
GT-525
if is required.
The
GT-525
mounted a patch antenna which
radiates normally to its patch surface, the elevation
for
φ
at 90 degrees would be important.
Left figure is shows the gain of the antenna at
1575MHz for
φ
= 90 degrees in the free space.
The maximum gain is obtained in the broadside
direction and this is measured to be 2 dBi for
φ
at
90 degrees. The backlobe radiation is sufficiently
small and is measured to be -5.3 dBi for the left plot.
The 3D plots for the antenna are shown in above
Figure at different angles; it is easier to understand
the radiation from the antenna.