A dual-band wide angle coverage cavity-backed slot antenna(WACCBSA)for Wi-Fi applications is proposed in this paper.The antenna's main structure consists of a metal cylindrical body featuring a horizontally orient...A dual-band wide angle coverage cavity-backed slot antenna(WACCBSA)for Wi-Fi applications is proposed in this paper.The antenna's main structure consists of a metal cylindrical body featuring a horizontally oriented long slot on its side and an internally conformal thin backed cavity.The long slot,operating in a special mode,is excited by a strip within the thin cavity,enabling wide-angle coverage in the lower frequency band.The mechanism of this special thin cavity is analyzed.To enhance beam characteristics at higher frequencies,two parasitic elements are introduced to adjust the current distribution around the slot.In addition,a short slot is connected in parallel,5 mm away from the long slot,to increase the working bandwidth.The measured results show that the proposed dual-band WACCBSA achieves two 10 dB reflection coefficient bandwidths of 13.97%(2.13 GHz~2.45 GHz)and 11.25%(5.20 GHz~5.82 GHz).Moreover,the measured gains of the proposed antenna exceed4.9 dBi within±90◦in the horizontal plane for both frequency bands.展开更多
基金supported by the Cooperation Project between Xidian University and Huawei Device Company Ltd.(99901200712).
文摘A dual-band wide angle coverage cavity-backed slot antenna(WACCBSA)for Wi-Fi applications is proposed in this paper.The antenna's main structure consists of a metal cylindrical body featuring a horizontally oriented long slot on its side and an internally conformal thin backed cavity.The long slot,operating in a special mode,is excited by a strip within the thin cavity,enabling wide-angle coverage in the lower frequency band.The mechanism of this special thin cavity is analyzed.To enhance beam characteristics at higher frequencies,two parasitic elements are introduced to adjust the current distribution around the slot.In addition,a short slot is connected in parallel,5 mm away from the long slot,to increase the working bandwidth.The measured results show that the proposed dual-band WACCBSA achieves two 10 dB reflection coefficient bandwidths of 13.97%(2.13 GHz~2.45 GHz)and 11.25%(5.20 GHz~5.82 GHz).Moreover,the measured gains of the proposed antenna exceed4.9 dBi within±90◦in the horizontal plane for both frequency bands.
