AN2731 Freescale Semiconductor / Motorola, AN2731 Datasheet - Page 18

• Manufacturer Part Number: AN2731
• Description: Compact, Integrated Antennas: Designs and Applications for the MC13191 and MC13192
• Manufacturer: Freescale Semiconductor / Motorola

Design Examples
The following figure shows a typical plot of the return loss and bandwidth obtainable with an F-antenna.
A slight ripple is caused by the ground plane size.
18
Figure 15. F-Antenna Radiation Pattern (Rotated 90 Degrees For Antennas as Shown in Figures 11 and 12)
Figure 16. F Antenna Return Loss and Bandwidth
EVK Horiz ontal PCB Radiation Pattern
Vert. polarisation (dBi)
Compact Integrated Antennas, Rev. 1.2
-10
-15
-20
-25
-30
-5
5
0
Hor. polarisation (dBi)
Freescale Semiconductor