User's Manual
Table Of Contents
- Table of Contents
- 1 Gas Sensor Platform Reference Design User's Guide
- 2 Features
- 3 Hardware Description
- 4 Antenna Simulations
- 5 Schematics and Bill Of Materials
- 6 Layout
- 7 Practical Applications
- A SAT0009 Power Board Files
- Important Notices
- Important Notices
Summary of Findings
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4.2 Summary of Findings
• The battery board does not significantly influence the antenna (see Table 4-1).
• Good omnidirectional radiation pattern is found.
– Low peak gain of 1.2.
• Antenna radiation efficiency is estimated at 54%.
4.3 Conclusion
• Overall board size is very small.
– Reduces the antenna efficiency from an estimated 70% to 54%.
– Influences the match of the antenna to become only 6 dB.
• By increasing the last inductor from 3 to 5 nH, the match is improved.
4.4 FCC Reports
The Gas Sensor Platform is compliant with FCC and EU radiation requirements. For additional
information, see the following documents:
• ETSI EN 301 489-17, v2.1.1.
http://processors.wiki.ti.com/index.php/File:10240453EEU1_301_489_report.pdf
• FCC part 15, subpart B & ICES-003, Issue 4.
http://processors.wiki.ti.com/index.php/File:10240453EUS1_FCC_Report.pdf
• EN 300 328: v1.7.1. http://processors.wiki.ti.com/index.php/File:10240453REU1.pdf
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Antenna Simulations SNOA922–April 2013
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