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Design Note DN033

Table of Contents

KEYWORDS.............................................................................................................................. 1

1 2 3

INTRODUCTION............................................................................................................. 1 ABBREVIATIONS........................................................................................................... 3 DESCRIPTION OF THE ANTENNA DESIGN................................................................ 4

3.1 3.2

IMPLEMENTATION OF THE ANTENNA ............................................................................ 4 SELECTION OF ANTENNA MATCHING COMPONENTS FOR OPTIMIZED PERFORMANCE ..... 7

4

4.1

MEASUREMENT RESULTS .......................................................................................... 9 BANDWIDTH ............................................................................................................. 10

4.1.1 4.1.2

868 MHz .........................................................................................................................10 915 MHz .........................................................................................................................10

5 6 7

CONCLUSION .............................................................................................................. 13 REFERENCES.............................................................................................................. 14 GENERAL INFORMATION .......................................................................................... 14

7.1

DOCUMENT HISTORY................................................................................................ 14

2 Abbreviations

BOM BW CITA DK DUT EB EIRP EM ISM NC NHPRP NHPRP45 OTA PCB RF SWR TRP

Bill Of Materials Bandwidth Cellular Telecommunications Industry Association Development Kit Device Under Test Evaluation Board Effective Isotropic Radiated Power Evaluation Module Industrial, Scientific, Medical Not Connected Near Horizon Partial Radiated Power Near Horizon Partial Radiated Power within 45 degrees angle Over The Air Printed Circuit Board Radio Frequency Standing Wave Ratio Total Radiated Power

SWRA307A

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