Coplanar Waveguide-Fed Bidirectional Same-Sense Circularly Polarized Metasurface-Based Antenna

다국어 초록 (Multilingual Abstract)

This paper presents the design of a bidirectional same-sense circularly polarized (CP) antenna that uses metasurfaces. The antenna consists of two metasurfaces, each comprising an array of 2 × 4 corner truncated patches placed back-to-back on the top and bottom of the antenna. In addition, a ground plane with an etched slot is sandwiched between the substrates at the front and back, and the feed line is a 50 Ω coplanar waveguide. The antenna radiates same-sense right-handed CP waves in both the front and back directions and has overall dimensions of 48 ㎜ × 24 ㎜ × 3.048 ㎜ (0.91λ。 × 0.45λ。 × 0.05λ。 at 5.7 ㎓). The measured reflection coefficient for |S11| ＜ -10 ㏈ yields an impedance bandwidth of 5.21–6.26 ㎓ (18.4%) and an axial ratio (AR) bandwidth of 5.36–6 ㎓ (11.2%) for both front and back directions. The antenna gain is 3–5.29 ㏈ic for both directions and has a radiation efficiency of ＞96% within its AR bandwidth.

목차 (Table of Contents)

• Abstract
• Ⅰ. INTRODUCTION
• Ⅱ. ANTENNA GEOMETRY
• Ⅲ. ANTENNA CHARACTERISTICS
• Ⅳ. EXPERIMENTAL RESULTS
• Ⅴ. CONCLUSION
• REFERENCES

참고문헌 (Reference)

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