FXP07.07.0100A Datasheet, PDF (7/10 Pages) Taoglas antenna solutions – Flexible PCB Penta Band GSM Antenna

3.4 Efficiency
100%
80%
60%
40%
20%
0%
600
1000
1400
1800
2200
Ground Plane
Free Space
Plastic
Miniature antennas couple to the ground plane for radiation so the efficiency of the
antenna without a ground plane is largely degrades. These tests demonstrate the best
performance (with the designed ground) and the worst performance (with no ground)
possible of FXP.07. Adhere the antenna to a plastic changes the result, particularly in
higher frequency bands.
SPE-11-8-114/C Page 7 of 10