SPE-11-8-061/I

Page 2 of 20

1. Introduction

This ceramic multiband cellular antenna uses high grade ceramics which have been

developed in Taoglas through years of expertise in delivering the right materials for high

performance antennas. Taoglas designers, through constant research and development

have been able to “fit” 6 bands in a small area, while also achieving high efficiency. The

PA.25 is a unique SMT solution which is delivered on tape and reel. For very detailed

integration

information

additional

to

this

specification

please

download

our

comprehensive PA.25 integration application note from our website.

1.1 Key Advantages

1. Highest efficiency in small size 35*5*6mm. A comparative metal, FR4, FPC, whip,

rod, helix antenna would have much more reduced efficiency in this configuration

for the same size due to their different dielectric constants.

2. More resistant to detuning compared to other antenna integrations. If tuning is

required it can be tuned for the device environment. There is no need for new

tooling, thereby saving money if customisation is required.

3. Highly reliable and robust– its predecessor the PA.22 antenna is used by the

world’s leading auto makers in extremely challenging environments. The antenna

meets all temperature and mechanical specs required (vibration, drop tests etc)

4. Rectangular shape - Easy to integrate. Other antenna designs come in irregular

shapes and sizes making them hard to integrate.

5. SMD (On-Board) antenna saves on labor, cable and connector costs, leads to

higher integration yield rates, and reduces losses in transmission.

6. It can be mounted directly on edge of device main-board.

7. Transmission losses are kept to absolute minimum resulting in much improved

over the air (OTA) device performance compared to similar efficiency cable and

connector antenna solutions

8. Reductions in probability of radiated spurious emissions compared to other

antenna technologies are observed when using the PA.25 and strictly following this

application note layout

9. Achieves moderate to high gain in both vertical and horizontal polarization planes.

This feature is very useful in certain wireless communications where the antenna

orientation is not fixed and the reflections or multipath signals may be present

from any plane. In those cases the important parameter to be considered is the

total field strength, which is the vector sum of the signal from the horizontal and

vertical polarization planes at any instant in time.