FXP07090100A Datasheet, PDF (9/11 Pages) List of Unclassifed Manufacturers – Flexible PCB Penta Band GSM Antenna 100mm 1.13 cable Right angle MMCX connector

3.4 Efficiency
100%
80%
60%
40%
20%
Ground Plane
Free Space
0%
600
1000
1400
1800
2200
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-12-8-051/A/ZL | page 9 of 11