The design and optimization of a self-complementary two-arm Archimedean spiral antenna backed by an absorptive cavity were presented. Parametric studies on the proposed antenna structure were carried out by using CST ...The design and optimization of a self-complementary two-arm Archimedean spiral antenna backed by an absorptive cavity were presented. Parametric studies on the proposed antenna structure were carried out by using CST MWS. Simulation results show that the proper choice of spiral turns and cavity depth can miniaturize the dimensions of the cavity-backed spiral antenna presented here. According to simulation results, prototype antennas operating in the 6 12 GHz band are fabricated and the dimension of the proposed cavity-backed spiral antenna is 22 mm (diameter)×15 mm (height). The performance of the proposed antenna was measured and compared with the simulation results. It is shown that the experimental results are consistent with the theoretical predictions and the suggested antenna is good enough to adapt for various wideband applications.展开更多
The characteristics of a cavity-backed using the moment method and Dyadic Green's funused to convert the double series of the elements inintegration middle value theorem and elliptic integr}the elements. Numerical...The characteristics of a cavity-backed using the moment method and Dyadic Green's funused to convert the double series of the elements inintegration middle value theorem and elliptic integr}the elements. Numerical results show the effects of tthe input impedance, which could be used in designing the Cavity-Backed Slot Antenna展开更多
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
文摘The design and optimization of a self-complementary two-arm Archimedean spiral antenna backed by an absorptive cavity were presented. Parametric studies on the proposed antenna structure were carried out by using CST MWS. Simulation results show that the proper choice of spiral turns and cavity depth can miniaturize the dimensions of the cavity-backed spiral antenna presented here. According to simulation results, prototype antennas operating in the 6 12 GHz band are fabricated and the dimension of the proposed cavity-backed spiral antenna is 22 mm (diameter)×15 mm (height). The performance of the proposed antenna was measured and compared with the simulation results. It is shown that the experimental results are consistent with the theoretical predictions and the suggested antenna is good enough to adapt for various wideband applications.
文摘The characteristics of a cavity-backed using the moment method and Dyadic Green's funused to convert the double series of the elements inintegration middle value theorem and elliptic integr}the elements. Numerical results show the effects of tthe input impedance, which could be used in designing the Cavity-Backed Slot Antenna
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.
