Pub Date : 2018-08-01DOI: 10.1109/APCAP.2018.8538025
Huiling Li, Bian Wu, Yutong Zhao, Liang Chen, Nan Wu
A flexible frequency selective surface (FSS) with high upper suppression is presented. The proposed FSS is composed of two flower-shaped metallic patterns on the top/bottom and a coupling aperture in the middle layer with petal-shaped slots. They are all etched on thin polyimide substrates and supported by flexible thin teflon substrates. The coupling aperture structure introduces two transmission zeros which greatly improve the frequency selectivity. The simulated results show that the flexible FSS performs at 17.2GHz with an insertion loss of 0.3dB and a 3-dB fractional bandwidth of 30.2%, ranging from 14.6GHz to 19.8GHz, which also exhibits incident-angle insensitive and polarization independent property.
{"title":"Design of Flexible Bandpass Frequency Selective Surface with High Out-of-band Suppresion","authors":"Huiling Li, Bian Wu, Yutong Zhao, Liang Chen, Nan Wu","doi":"10.1109/APCAP.2018.8538025","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538025","url":null,"abstract":"A flexible frequency selective surface (FSS) with high upper suppression is presented. The proposed FSS is composed of two flower-shaped metallic patterns on the top/bottom and a coupling aperture in the middle layer with petal-shaped slots. They are all etched on thin polyimide substrates and supported by flexible thin teflon substrates. The coupling aperture structure introduces two transmission zeros which greatly improve the frequency selectivity. The simulated results show that the flexible FSS performs at 17.2GHz with an insertion loss of 0.3dB and a 3-dB fractional bandwidth of 30.2%, ranging from 14.6GHz to 19.8GHz, which also exhibits incident-angle insensitive and polarization independent property.","PeriodicalId":198124,"journal":{"name":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116356078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-01DOI: 10.1109/APCAP.2018.8538181
Hou Zhang, Tao Zhong, Zicheng Niu, Wanjun Song
Three letter-shaped antennas and a word-shaped antenna are presented and preliminarily investigated in this paper. The working frequencies of the A-shaped, N-shaped and T-shaped antenna are 2.28 GHz, 2.22 GHz and 2.10 GHz, respectively. For the ANT-shaped antenna which is formed by a combination of the three letters antennas, the radiation performance and the mutual coupling of the antenna are analyzed. It can be seen that the radiation characteristics of the letter-shaped antennas are similar to the normal patch antennas. The Letter-shaped and word-shaped antennas have prominent advantage in stealthy and embellished antennas.
{"title":"Preliminary Investigation of English Letter-Shaped and Word-Shaped Antennas","authors":"Hou Zhang, Tao Zhong, Zicheng Niu, Wanjun Song","doi":"10.1109/APCAP.2018.8538181","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538181","url":null,"abstract":"Three letter-shaped antennas and a word-shaped antenna are presented and preliminarily investigated in this paper. The working frequencies of the A-shaped, N-shaped and T-shaped antenna are 2.28 GHz, 2.22 GHz and 2.10 GHz, respectively. For the ANT-shaped antenna which is formed by a combination of the three letters antennas, the radiation performance and the mutual coupling of the antenna are analyzed. It can be seen that the radiation characteristics of the letter-shaped antennas are similar to the normal patch antennas. The Letter-shaped and word-shaped antennas have prominent advantage in stealthy and embellished antennas.","PeriodicalId":198124,"journal":{"name":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123563481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A broadband multimode orbital angular momentum (OAM) four-feed circular patch antenna at 6 GHz is proposed in this study. The OAM antenna exhibits 5.8-dBi maximum gain, has an impedance bandwidth of 25% over the frequency range 5.2-6.7 GHz with more than 10-dB return loss. Additionally, the OAM modes + 1, -1 and OAM modes +2, -2 can be generated from 5.2 to 6.5 GHz, whose mode purity is much better than the previous two-feed configuration.
{"title":"A Broadband Multi-OAM-Mode Four-Feed Circular Patch Antenna with High Mode Purity","authors":"Yuhan Huang, Zihang Qi, Qingwen Li, Hua Zhu, Xiuping Li, Xiaoming Li, Xing Jiang","doi":"10.1109/APCAP.2018.8538154","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538154","url":null,"abstract":"A broadband multimode orbital angular momentum (OAM) four-feed circular patch antenna at 6 GHz is proposed in this study. The OAM antenna exhibits 5.8-dBi maximum gain, has an impedance bandwidth of 25% over the frequency range 5.2-6.7 GHz with more than 10-dB return loss. Additionally, the OAM modes + 1, -1 and OAM modes +2, -2 can be generated from 5.2 to 6.5 GHz, whose mode purity is much better than the previous two-feed configuration.","PeriodicalId":198124,"journal":{"name":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123719694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-01DOI: 10.1109/APCAP.2018.8538208
Xinru Lu, Zixian Wu, A. Zhang, Juan Chen
A transparent absorber structure made of resistive film and glass is presented in this paper. The structure has the effect of ultra-wideband, polarization-independent, and high absorption during microwave band. According to the simulation, the structure has absorbance more than 75% in the region of 4.3~21.5GHz band under the incidence of linear polarized wave. The structure not only protects resistive film from the outside, but also makes it easier to integrate with laminated glass. Owe to its simple structure and moderate thickness, it will have more applications in the field of transparent stealth.
{"title":"Transparent and ultra-wideband microwave absorber made of glass and resistive film","authors":"Xinru Lu, Zixian Wu, A. Zhang, Juan Chen","doi":"10.1109/APCAP.2018.8538208","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538208","url":null,"abstract":"A transparent absorber structure made of resistive film and glass is presented in this paper. The structure has the effect of ultra-wideband, polarization-independent, and high absorption during microwave band. According to the simulation, the structure has absorbance more than 75% in the region of 4.3~21.5GHz band under the incidence of linear polarized wave. The structure not only protects resistive film from the outside, but also makes it easier to integrate with laminated glass. Owe to its simple structure and moderate thickness, it will have more applications in the field of transparent stealth.","PeriodicalId":198124,"journal":{"name":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128643149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-01DOI: 10.1109/APCAP.2018.8538042
Chiung-Yu Chen, Shih-Yuan Chen
A compact, frequency-tunable zeroth-order resonator (ZOR) antenna designed with capacitor-loaded (CL) coplanar waveguide (CPW) is proposed. By replacing the series capacitors used in the conventional CL CPW ZOR antenna with varactor diodes and properly designing the feed-in capacitor, a well-matched and continuously tunable resonant frequency is acquired. For a satisfactory rf-dc isolation without using bias Tee, a simple dc bias circuit for the varactor diodes is devised. For verification, the proposed antenna is designed, fabricated, and tested, and its performance is compared to other frequencytunable ZOR antennas. Limited by the capacitance tuning range of the varactor diodes at hand, the operating frequency of the prototype antenna is tunable only from 2.54 GHz to 2.78 GHz as the dc bias voltage is changed from 0 to 10 V. Nonetheless, the proposed design has a simple planar structure and a compact size while exhibiting a reasonable gain in between 1.23 and 2.03 dBi.
{"title":"Frequency-Tunable Zeroth-Order Resonator Antenna Based on Capacitor-Loaded Coplanar Waveguide","authors":"Chiung-Yu Chen, Shih-Yuan Chen","doi":"10.1109/APCAP.2018.8538042","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538042","url":null,"abstract":"A compact, frequency-tunable zeroth-order resonator (ZOR) antenna designed with capacitor-loaded (CL) coplanar waveguide (CPW) is proposed. By replacing the series capacitors used in the conventional CL CPW ZOR antenna with varactor diodes and properly designing the feed-in capacitor, a well-matched and continuously tunable resonant frequency is acquired. For a satisfactory rf-dc isolation without using bias Tee, a simple dc bias circuit for the varactor diodes is devised. For verification, the proposed antenna is designed, fabricated, and tested, and its performance is compared to other frequencytunable ZOR antennas. Limited by the capacitance tuning range of the varactor diodes at hand, the operating frequency of the prototype antenna is tunable only from 2.54 GHz to 2.78 GHz as the dc bias voltage is changed from 0 to 10 V. Nonetheless, the proposed design has a simple planar structure and a compact size while exhibiting a reasonable gain in between 1.23 and 2.03 dBi.","PeriodicalId":198124,"journal":{"name":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129314324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-01DOI: 10.1109/APCAP.2018.8538215
Wei Zhang, Kuiwen Xu, Peng Zhao, Gaofeng Wang, Shilei Sun
In this paper, a hybrid magnetic-electric coupling loop MIMO antenna is proposed toimplement wireless communication. The proposed radiated element consists of three split rings,i.e., the feeding ring, the main radiated ring, and the parasitic ring. In virtue of hybrid magnetic-electric coupling between the three split rings, a wide frequency band (2.2 GHz - 4.7 GHz), compact size (50 mm $times50.7$ mm) can be achieved by a single antenna. After that, a MIMO antenna consisting of four radiators is constructed and the distance between the nearest elements is only 5 mm. The minimum electrical length is λ0 (λ0 is the wavelength of the lowest resonance). Without any decoupling structures, the proposed MIMO antenna not only canachieve a very wide bandwidth but also a high degree of isolation (i.e., less than -12 dB).
{"title":"A Wideband And High-Isolation Mimo Antenna With Hybrid Magnetic-Electric Coupling Loop","authors":"Wei Zhang, Kuiwen Xu, Peng Zhao, Gaofeng Wang, Shilei Sun","doi":"10.1109/APCAP.2018.8538215","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538215","url":null,"abstract":"In this paper, a hybrid magnetic-electric coupling loop MIMO antenna is proposed toimplement wireless communication. The proposed radiated element consists of three split rings,i.e., the feeding ring, the main radiated ring, and the parasitic ring. In virtue of hybrid magnetic-electric coupling between the three split rings, a wide frequency band (2.2 GHz - 4.7 GHz), compact size (50 mm $times50.7$ mm) can be achieved by a single antenna. After that, a MIMO antenna consisting of four radiators is constructed and the distance between the nearest elements is only 5 mm. The minimum electrical length is λ0 (λ0 is the wavelength of the lowest resonance). Without any decoupling structures, the proposed MIMO antenna not only canachieve a very wide bandwidth but also a high degree of isolation (i.e., less than -12 dB).","PeriodicalId":198124,"journal":{"name":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130566918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We present an amplitude controllable spatial modulator, which consists of an artificially constructed metamaterial and a graphene layer, to realize four transmission channels in gigahertz (GHz). The four transmission poles TP1, TP2, TP3 and TP4 are located at 26.5GHz, 29.3GHz, 32.6GHz and 35.9GHz, respectively. By applying a bias voltage between the metamaterial and the ptype silicon layer, more than 60% modulation depth is achieved for TP1, TP2 and TP3, the modulation depth for TP4 is 54.5%. Therefore, the modulator indicates many potential applications for multichannel communication system.
{"title":"Graphene-based Millimeter Wave Spatial Amplitude Modulator With Four Transmission Poles","authors":"Yutong Zhao, Bian Wu, Yu Zhang, Yunbin Zhou, Wei Zhang, Lianxing He","doi":"10.1109/APCAP.2018.8538278","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538278","url":null,"abstract":"We present an amplitude controllable spatial modulator, which consists of an artificially constructed metamaterial and a graphene layer, to realize four transmission channels in gigahertz (GHz). The four transmission poles TP<inf>1</inf>, TP<inf>2</inf>, TP<inf>3</inf> and TP<inf>4</inf> are located at 26.5GHz, 29.3GHz, 32.6GHz and 35.9GHz, respectively. By applying a bias voltage between the metamaterial and the ptype silicon layer, more than 60% modulation depth is achieved for TP<inf>1</inf>, TP<inf>2</inf> and TP<inf>3</inf>, the modulation depth for TP<inf>4</inf> is 54.5%. Therefore, the modulator indicates many potential applications for multichannel communication system.","PeriodicalId":198124,"journal":{"name":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130780646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-01DOI: 10.1109/APCAP.2018.8538040
Cheng Zhang, Q. Cheng
Here we report our recent progress on the design of transparent metamaterials, which can serve as low microwave scatter with broad bandwidth. The meta-atoms are made of the indium tin oxide (ITO) film with moderate sheet resistance, so that a large light transmittance of the proposed metamaterial has been achieved at the same time.
{"title":"Transparent Metamaterial with Powerful Wave Manipulation and Large Light Transmittance","authors":"Cheng Zhang, Q. Cheng","doi":"10.1109/APCAP.2018.8538040","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538040","url":null,"abstract":"Here we report our recent progress on the design of transparent metamaterials, which can serve as low microwave scatter with broad bandwidth. The meta-atoms are made of the indium tin oxide (ITO) film with moderate sheet resistance, so that a large light transmittance of the proposed metamaterial has been achieved at the same time.","PeriodicalId":198124,"journal":{"name":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132408888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-01DOI: 10.1109/APCAP.2018.8538249
Zusheng Jin, Jialin Shi, Jianxuan Li, Jianxuan Li, Xi He
The response of a receiving antenna to the high power microwave irradiation is analyzed by using the finite integration technique (FIT). Typical excitation signals are applied to examine the effect of the excitation to the response. The results reveal that the waveform of the response signal is mainly decided by the excitation signal and the operating frequency band of the receiving antenna.
{"title":"Simulation on the Response of the SIW Slot Array to HPM Irradiation","authors":"Zusheng Jin, Jialin Shi, Jianxuan Li, Jianxuan Li, Xi He","doi":"10.1109/APCAP.2018.8538249","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538249","url":null,"abstract":"The response of a receiving antenna to the high power microwave irradiation is analyzed by using the finite integration technique (FIT). Typical excitation signals are applied to examine the effect of the excitation to the response. The results reveal that the waveform of the response signal is mainly decided by the excitation signal and the operating frequency band of the receiving antenna.","PeriodicalId":198124,"journal":{"name":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130466206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-01DOI: 10.1109/APCAP.2018.8538056
Yongjun Huang, Xiaochuan Fang, D. Inserra, Jian Li, G. Wen, Haobin Zhang, Le Zuo
A miniaturized wideband CPW-fed Y-shape patch with a folded surrounding slot structure is discussed in this work. The presented antenna, fabricated on $mathrm{a}30 times 20 times1.6$ mm$^{mathbf{3}}$ FR4 dielectric, exhibits a measured S}$_{mathbf{11}} quad le$-10 dB bandwidth from 2.39 GHz to 3.56 GHz; within this bandwidth, a gain larger than 0.6 dBi is found. Compactness and wideband characteristics yield this antenna a valid choice for Wireless LAN 2.4-2.7 GHz and Wi-MAX 2.5/3.5 GHz.
{"title":"Miniaturized Broadband CPW-Fed Folded-Slot Antenna for Wireless-LAN and Wi-MAX Bandwidths","authors":"Yongjun Huang, Xiaochuan Fang, D. Inserra, Jian Li, G. Wen, Haobin Zhang, Le Zuo","doi":"10.1109/APCAP.2018.8538056","DOIUrl":"https://doi.org/10.1109/APCAP.2018.8538056","url":null,"abstract":"A miniaturized wideband CPW-fed Y-shape patch with a folded surrounding slot structure is discussed in this work. The presented antenna, fabricated on $mathrm{a}30 times 20 times1.6$ mm$^{mathbf{3}}$ FR4 dielectric, exhibits a measured S}$_{mathbf{11}} quad le$-10 dB bandwidth from 2.39 GHz to 3.56 GHz; within this bandwidth, a gain larger than 0.6 dBi is found. Compactness and wideband characteristics yield this antenna a valid choice for Wireless LAN 2.4-2.7 GHz and Wi-MAX 2.5/3.5 GHz.","PeriodicalId":198124,"journal":{"name":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128763599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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