12. Ground plane in praxis  Q: Why does my GSM antenna radiates, but my GPS antenna does not work?  A: Why didn’t your supplier sell you a starter kit; why didn’t they recommend to take care on ground plane? Please do not follow the upper example

13. Do's and Dont's during development  Never place ground plane or tracks underneath the antenna  Never place the antenna very close to metallic objects  Be careful about the wiring in the finalized product, not too close to the antenna  A monopole antenna should have a reasonable ground plane to be efficient  Do the final tuning in the end product, not in free air  Never install a chip antenna in a vastly different layout than the reference design, and expect it to work without tuning  Do not use a metallic enclosure or metallized plastic for the antenna  Test the plastic casing for high RF losses, preferably before production  Never do a cut and paste antenna design and expect it to work without testing  Do not use very thin PCB tracks, the tracks should be fairly wide

14. International success stories Medical Intelligence, Canada Eureka, Italy for e-foxx, Germany bplan, Germany

15. Customised external antennas  Q: Can you help us with antennas that will pass PTCRB?  A: Yes, we can help with standard and customised antennas. GSM 850/1900 antenna with American PTCRB approvel Narrow band GSM-R antenna on top of information terminal Top and back view of GSM-R antenna

16. Embedded antenna GSM 900/1800 and ISM 868 for electricity meter Result after customisation: The VSWR for GSM 900 is always better than 1.9 and in GSM 1800 MHz band the VSWR is always better than 1.6. Before After

19. Do not burn your money  Be careful when selecting your antenna supplier  First plane the size of PCB and antenna  Doing the other way around can force enormous costs  Better spending money for feasibility study, then loosing the chance to get GSM operator approval  Take care that GSM operators like Cingular and Vodafone are looking for antenna efficiency of at least of 40%  Our European wireless paradise will shrink, as soon operators will use close the same rules than the Americans  Hire resources as soon you run in trouble with your RF design  The best RF amplifier is a good antenna  The best antenna you get by selecting a high position

20. Tools and services to play with  Q: Where to get all the tools and services?  A: Please feel free to ask for measurement equip- ment, consulting, studies and development with us. Please note that we offer the loaning of GSM testers and other equip- ment for premium customers free of charge.

23. Round Solutions GmbH & Co . KG Hans-Boeckler-Straße 16 63263 Neu-Isenburg, Germany Parliamo italiano +49 6102 79928 - 2 20 Kundtjänst på Svenska +49 6102 79928 -210 Hablamos el espanol +49 6102 79928 -230 English spoken +49 6102 79928-200 German spoken +49 6102 79928-0 Fax +49 6102 79928- 199 i [email_address] www.roundsolutions.com Thank you for listening. More about antennas and services around at stand A17

24. Meet us at stand A17: A17