Abstract
This paper presents a novel CB-CPW wideband antenna design. HFSS software simulations reveal that the proposed design has a semicircle ground structure, transmission line, parasitic ground, CPW, relatively low return loss, broadband effect of 3.3377 GHz (4.8337 GHz-8.1714 GHz), double beam capability at 5.2 GHz, and four-beam capability at 5.5 GHz (5.8 GHz). It is compact in size at only 40 mm × 40 mm × 1 mm. A prototype of the proposed antenna was fabricated and measured to validate the simulated design; the results show a bandwidth of 3.38 GHz (3.95 GHz-7.33 GHz), relative bandwidth of 74%, and maximum gain of 3.87 dBi in the range of 5 GHz to 6 GHz; the prototype also achieves two and four-beam performance. Its working frequency covers WLAN (5.15 GHz-5.25 GHz and 5.725 GHz-5.825 GHz), radio frequency identification RFID (5.8 GHz), and global microwave internet access WiMAX (5.25 GHz-5.85 GHz) frequency bands.
Highlights
Modern wireless communication systems [1] require multifunction, high-speed, small-size, high-performance communication equipment
This paper proposes a conductor-backed (CB-coplanar waveguide (CPW)) broadband antenna with multi-beam performance for Wireless Local Area Network (WLAN), RFID, and WiMAX applications
The results of this study suggest that a miniaturized patch antenna with extended bandwidth can be realized after parameter optimization by ANSYS HFSS (Ver. 15)
Summary
Modern wireless communication systems [1] require multifunction, high-speed, small-size, high-performance communication equipment. Z. Ding et al.: Broadband Antenna Design With Integrated CB-CPW and Parasitic Patch Structure. The proposed device has a semi-circular grounding structure, parasitic grounding, and three CPW structures that achieve its broadband effect It readily dissipates heat and has high mechanical strength; it is compact in size and has a simple, straightforward configuration. B. ANTENNA DESIGN The antenna proposed in this paper is based on a CB-CPW with a rectangular parasitic patch, transmission line and back semi-circular grounding structure. Z. Ding et al.: Broadband Antenna Design With Integrated CB-CPW and Parasitic Patch Structure FIGURE 12. A parasitic square patch antenna was added to the CPW structure (Fig. 7(b)) with length and width of c = 3.5 mm and g = 1 mm, c = 4 mm and g = 1.2 mm, c = 4.5 mm and g = 1.4 mm, and c = 5 mm and g = 1.6 mm, respectively.
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