Journal
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
Volume 17, Issue 8, Pages 1492-1496Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2018.2850857
Keywords
Beam steering; reconfigurable antenna
Funding
- Australian Research Council under ARC [LP160100917]
- Australian Research Council [LP160100917] Funding Source: Australian Research Council
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A compact reconfigurahle antenna with high directivity and 360 degrees beam steering is proposed for 5.8 GHz band application. The concept incorporates via-grounding technique around a circular patch that is shorted with a matching patch, surrounded by a combination of edge-grounded sector patches and arc strips. The matching patch is utilized to improve the impedance matching and lower the resonance frequency. Six beam-steerable states are achieved using 12 p-i-n diodes. Compared to other reconfigurable antennas for similar applications, the presented design has a more compact size (diameter of 1.95 lambda(g)) and profile of 0.17 lambda(g), where lambda(g) is the wavelength at resonance, while maintaining a high gain (8.1 dBi), front-to-back ratio (18 dB), and efficiency (84%).
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