Design of a beam steering antenna array using 8x8 butter matrix for indoor positioning system

ABSTRACT

This paper proposes a 5 GHz beam steering antenna array (BSAA) based on 8 × 8 Butler Matrix for Indoor Positioning System (IPS). The main beam of BSAA is narrow in azimuth plane with 12° of beam-width while the beam-width in elevation plane is 50°-120°. The steering angle of BSAA in azimuth plane is 108° with eight beams at −52°, −37°, −20°, −8°, +9°, +25°, +40°, +56°, and the peak gains of 7.8 dBi – 11 dBi. The wide beam-width in elevation plane helps to increase the positioning area of BSAA. Also, the narrow beam-width in azimuth plane allows improving the accuracy of IPS.

KEYWORDS:

• Beam steering antenna
• butler matrix
• indoor positioning system

Acknowledgments

The authors would like to gratefully acknowledge the Editor and the Reviewer for their constructive and valuable comments and suggestions to improve the quality of the manuscript.