Pub Date : 2020-08-04DOI: 10.1109/APCAP50217.2020.9246102
Xiangcheng Lu, Qingbo Li
In this paper, a low-profile lightweight wide scanning microstrip antenna is proposed, which can be widely used in space-borne and airborne platform. The results of simulation indicate that the antenna achieves 15% bandwidth while scanning to ±60° in E-plane and ±20° in H-plane, subject to active VSWR<2.5. The gain is within 3 dB of the theoretical limit in all scan-planes. Measured results are presented for a prototype 8× 4 array, showing good agreement with simulation.
{"title":"Design of Low-profile Lightweight Wide Scanning Antenna element for Phased Array Applications in L Band","authors":"Xiangcheng Lu, Qingbo Li","doi":"10.1109/APCAP50217.2020.9246102","DOIUrl":"https://doi.org/10.1109/APCAP50217.2020.9246102","url":null,"abstract":"In this paper, a low-profile lightweight wide scanning microstrip antenna is proposed, which can be widely used in space-borne and airborne platform. The results of simulation indicate that the antenna achieves 15% bandwidth while scanning to ±60° in E-plane and ±20° in H-plane, subject to active VSWR<2.5. The gain is within 3 dB of the theoretical limit in all scan-planes. Measured results are presented for a prototype 8× 4 array, showing good agreement with simulation.","PeriodicalId":146561,"journal":{"name":"2020 9th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"3 5-6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132287396","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 : 2020-08-04DOI: 10.1109/APCAP50217.2020.9246132
Li Zhou, M. Tang, Meini Wang, Junfa Mao
In this paper, a substrate integrated waveguide (SIW) slot antenna array combined with fin-shaped heatsink is designed. It consists of four 1×8 SIW slot antenna elements. The heatsink structure enclosed in the design enhances heat dissipation capability of the antenna array while maintaining the radiation performance of the original structure. The simulated −10 dB impedance bandwidth of the antenna array with and without heatsink are 6.5% and 6.4%, respectively. In addition, the realized gain are 19.16 dBi and 18.04 dBi at 28 GHz, respectively.
{"title":"Substrate Integrated Waveguides Slot Antenna Array with Heatsink Enclosed","authors":"Li Zhou, M. Tang, Meini Wang, Junfa Mao","doi":"10.1109/APCAP50217.2020.9246132","DOIUrl":"https://doi.org/10.1109/APCAP50217.2020.9246132","url":null,"abstract":"In this paper, a substrate integrated waveguide (SIW) slot antenna array combined with fin-shaped heatsink is designed. It consists of four 1×8 SIW slot antenna elements. The heatsink structure enclosed in the design enhances heat dissipation capability of the antenna array while maintaining the radiation performance of the original structure. The simulated −10 dB impedance bandwidth of the antenna array with and without heatsink are 6.5% and 6.4%, respectively. In addition, the realized gain are 19.16 dBi and 18.04 dBi at 28 GHz, respectively.","PeriodicalId":146561,"journal":{"name":"2020 9th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"181 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134345194","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 : 2020-08-04DOI: 10.1109/APCAP50217.2020.9246090
Zhanel Kudaibergenova, Kassen Dautov, G. Nauryzbayev, M. Hashmi
This paper presents the defected ground structure (DGS)-based band-stop filter (BSF) which is developed using RO4350B and has a small board area of 20 × 10 mm2. The performed analysis of the proposed DGS shape shows that the size of the DGS has a huge impact on the quality factor. The cascades of the defects and incorporation of external capacitors aid in achieving the dual-band BSF. Furthermore, the developed BSF demonstrates the ability of wide-band rejection from 6.45 GHz to 12.75 GHz.
{"title":"Realization of Simple Band-Stop Filters for Wireless Power Transfer Applications","authors":"Zhanel Kudaibergenova, Kassen Dautov, G. Nauryzbayev, M. Hashmi","doi":"10.1109/APCAP50217.2020.9246090","DOIUrl":"https://doi.org/10.1109/APCAP50217.2020.9246090","url":null,"abstract":"This paper presents the defected ground structure (DGS)-based band-stop filter (BSF) which is developed using RO4350B and has a small board area of 20 × 10 mm2. The performed analysis of the proposed DGS shape shows that the size of the DGS has a huge impact on the quality factor. The cascades of the defects and incorporation of external capacitors aid in achieving the dual-band BSF. Furthermore, the developed BSF demonstrates the ability of wide-band rejection from 6.45 GHz to 12.75 GHz.","PeriodicalId":146561,"journal":{"name":"2020 9th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133339180","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 : 2020-08-04DOI: 10.1109/APCAP50217.2020.9246054
Lizhu Lu, Dongya Shen, Hong Yuan, Xiupu Zhang
In this letter, a differentially coplanar-fed antenna using integrated substrate gap waveguide (ISGW) is proposed for millimeter-wave applications, which has high gain and low cross polarization. The antenna consists of the differential power divider and radiation patch, and the power divider is deployed to excite the differential feeding antenna. The differential power divider is designed using rectangular-shaped coupling slot to achieve a stable 180° phase imbalance and 15% fractional operating bandwidth. The differentially coplanar-fed cross-shaped patch antenna has high gain and good radiation patterns. A fractional bandwidth of about 8.3% at the center frequency of 24 GHz and a peak gain of 10 dBi are obtained.
{"title":"Differentially Coplanar-Fed Antenna for Millimeter-Wave Applications based on Integrated Substrate Gap Waveguide","authors":"Lizhu Lu, Dongya Shen, Hong Yuan, Xiupu Zhang","doi":"10.1109/APCAP50217.2020.9246054","DOIUrl":"https://doi.org/10.1109/APCAP50217.2020.9246054","url":null,"abstract":"In this letter, a differentially coplanar-fed antenna using integrated substrate gap waveguide (ISGW) is proposed for millimeter-wave applications, which has high gain and low cross polarization. The antenna consists of the differential power divider and radiation patch, and the power divider is deployed to excite the differential feeding antenna. The differential power divider is designed using rectangular-shaped coupling slot to achieve a stable 180° phase imbalance and 15% fractional operating bandwidth. The differentially coplanar-fed cross-shaped patch antenna has high gain and good radiation patterns. A fractional bandwidth of about 8.3% at the center frequency of 24 GHz and a peak gain of 10 dBi are obtained.","PeriodicalId":146561,"journal":{"name":"2020 9th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132750767","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}
This paper presents a novel low-profile miniaturized dipole antenna with omnidirectional radiation. The structure (60mm × 60mm × 4mm) is made up of a dipole antenna with branches attached. For the geometry of the antenna, it looks like a flywheel which is constructed by using four branches conflguration on metallic ground. In this work, this proposed antenna can be divided into four parts: 1) a metallic patch printed on the top of the FR4 substrate with εr = 4.4 and the thickness of 1.0 mm; 2) a dual-substrate connected by four copper branches; 3) a coax feed connected to the center of bottom substrate, and 4) a radome located above the antenna. The simulation results show that the bandwidth is 2.33 ~2.38 GHz and the resonance frequency is 2.35 GHz. Moreover, the radiation characteristic of the designing antenna shows a good omnidirectional performance.
{"title":"A Low-Profile Miniaturized Antenna with Omnidirectional Radiation Pattern","authors":"Tang Chen, Qiangming Cai, Li Gu, Xin Cao, Yuyu Zhu, Yanwen Zhao","doi":"10.1109/APCAP50217.2020.9246010","DOIUrl":"https://doi.org/10.1109/APCAP50217.2020.9246010","url":null,"abstract":"This paper presents a novel low-profile miniaturized dipole antenna with omnidirectional radiation. The structure (60mm × 60mm × 4mm) is made up of a dipole antenna with branches attached. For the geometry of the antenna, it looks like a flywheel which is constructed by using four branches conflguration on metallic ground. In this work, this proposed antenna can be divided into four parts: 1) a metallic patch printed on the top of the FR4 substrate with εr = 4.4 and the thickness of 1.0 mm; 2) a dual-substrate connected by four copper branches; 3) a coax feed connected to the center of bottom substrate, and 4) a radome located above the antenna. The simulation results show that the bandwidth is 2.33 ~2.38 GHz and the resonance frequency is 2.35 GHz. Moreover, the radiation characteristic of the designing antenna shows a good omnidirectional performance.","PeriodicalId":146561,"journal":{"name":"2020 9th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"316 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122312180","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 : 2020-08-04DOI: 10.1109/APCAP50217.2020.9246111
Huaiji Zhang, Kangkang Gao, Jiangnan Xing, T. Jiang, Rongyu Xu
In order to alleviate the problem that the estimation accuracy and computational complexity in two-dimensional (2-D) direction-of-arrival (DOA) estimation, this paper proposes a novel 2-D DOA estimation method based on a sparse L-shaped array consisting of a sparse uniform linear array and a sparse nonuniform linear array. The elevation angles are estimated by an improved multiple signal classification method which utilizes the recursive gridding to improve the searching efficiency. Then the azimuth angles are obtained by adopting the traditional estimation method. The simulation results show that the accuracy of 2-D DOA estimation proposed is much better than that of the other methods.
{"title":"2D Direction-of-arrival Estimation for Sparse L-shaped Array based on Recursive Gridding","authors":"Huaiji Zhang, Kangkang Gao, Jiangnan Xing, T. Jiang, Rongyu Xu","doi":"10.1109/APCAP50217.2020.9246111","DOIUrl":"https://doi.org/10.1109/APCAP50217.2020.9246111","url":null,"abstract":"In order to alleviate the problem that the estimation accuracy and computational complexity in two-dimensional (2-D) direction-of-arrival (DOA) estimation, this paper proposes a novel 2-D DOA estimation method based on a sparse L-shaped array consisting of a sparse uniform linear array and a sparse nonuniform linear array. The elevation angles are estimated by an improved multiple signal classification method which utilizes the recursive gridding to improve the searching efficiency. Then the azimuth angles are obtained by adopting the traditional estimation method. The simulation results show that the accuracy of 2-D DOA estimation proposed is much better than that of the other methods.","PeriodicalId":146561,"journal":{"name":"2020 9th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114715626","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 : 2020-08-04DOI: 10.1109/APCAP50217.2020.9246096
Dou Yang, Yi Xi, H. Zhai, Changyuan Liu
This paper presents a multi-functional frequency selective surface (FSS)based on varactor diode and PIN diode loading. It can be realized that when the varactor diode is not loaded with voltage and the PIN is in the on state, the frequency selective surface(FSS) exhibits strong transmittance at 4 GHz, and when the PIN is in the off state, the frequency selective surface(FSS) exhibits strong reflectivity at 4 GHz. In addition, when the PIN is turned on, stable transmission of electromagnetic waves in a wide frequency range from 1.37GHZ-5.66GHZ can be achieved by changing the capacitance of the loaded varactor diode.
{"title":"Multifunctional active reconfigurable frequency selective surface","authors":"Dou Yang, Yi Xi, H. Zhai, Changyuan Liu","doi":"10.1109/APCAP50217.2020.9246096","DOIUrl":"https://doi.org/10.1109/APCAP50217.2020.9246096","url":null,"abstract":"This paper presents a multi-functional frequency selective surface (FSS)based on varactor diode and PIN diode loading. It can be realized that when the varactor diode is not loaded with voltage and the PIN is in the on state, the frequency selective surface(FSS) exhibits strong transmittance at 4 GHz, and when the PIN is in the off state, the frequency selective surface(FSS) exhibits strong reflectivity at 4 GHz. In addition, when the PIN is turned on, stable transmission of electromagnetic waves in a wide frequency range from 1.37GHZ-5.66GHZ can be achieved by changing the capacitance of the loaded varactor diode.","PeriodicalId":146561,"journal":{"name":"2020 9th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"601 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115491385","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 : 2020-08-04DOI: 10.1109/APCAP50217.2020.9245943
T. Ali, Xue Bai, Lei‐jun Xu
In this paper, a compact dual-band and CPW feeding antenna based on PVDF (polyvinylidene fluoride) piezoelectric film is proposed, which is suitable for 3G/4G/5G. The antenna is designed by a pair of fan-shaped CPW metal patches on PVDF film, the proposed antenna covers a bandwidth range of 1.9-2.8 GHz and 3.9-6 GHz. The gain is 2.05 dB at 2.4 GHz and 2.7 dB at 4.4 GHz. It has a compact size of 51 × 54 mm2 with the piezoelectric substrate thickness of 0.1 mm and dielectric constant of 9.5. The antenna shows good omnidirectional radiation characteristics in both lower and higher frequency bands. This piezoelectric antenna can be used for the RF and vibration hybrid energy harvesting system.
{"title":"Dual-band energy harvesting antenna based on PVDF piezoelectric material","authors":"T. Ali, Xue Bai, Lei‐jun Xu","doi":"10.1109/APCAP50217.2020.9245943","DOIUrl":"https://doi.org/10.1109/APCAP50217.2020.9245943","url":null,"abstract":"In this paper, a compact dual-band and CPW feeding antenna based on PVDF (polyvinylidene fluoride) piezoelectric film is proposed, which is suitable for 3G/4G/5G. The antenna is designed by a pair of fan-shaped CPW metal patches on PVDF film, the proposed antenna covers a bandwidth range of 1.9-2.8 GHz and 3.9-6 GHz. The gain is 2.05 dB at 2.4 GHz and 2.7 dB at 4.4 GHz. It has a compact size of 51 × 54 mm2 with the piezoelectric substrate thickness of 0.1 mm and dielectric constant of 9.5. The antenna shows good omnidirectional radiation characteristics in both lower and higher frequency bands. This piezoelectric antenna can be used for the RF and vibration hybrid energy harvesting system.","PeriodicalId":146561,"journal":{"name":"2020 9th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"173 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123739942","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 : 2020-08-04DOI: 10.1109/APCAP50217.2020.9246057
Xiaofei Xu, Xiao Deng, Yefang Wang
A stacked patch antenna is proposed which is loaded with mushroom metamaterials. The metamaterials enable the antenna to resonate at a very low frequency while the stacked patches broaden the impedance bandwidth. A particular metamaterial antenna is demonstrated in full wave calculations. A broad bandwidth of 24.6% is achieved for such a compact antenna, of which the driven and parasitic patch lengths are kept very small at the order of 0.21λ and 0.25λ respectively (λ is the wavelength of center frequency in the working bandwidth). The antenna gain is observed to be 7.26dBi while the peak efficiency is over 96% in the numerical example. The proposed antenna is suitable to be used in the portable wideband communications.
{"title":"Compact and Broadband Stacked Patch Antenna Loaded with Mushroom Metamaterials","authors":"Xiaofei Xu, Xiao Deng, Yefang Wang","doi":"10.1109/APCAP50217.2020.9246057","DOIUrl":"https://doi.org/10.1109/APCAP50217.2020.9246057","url":null,"abstract":"A stacked patch antenna is proposed which is loaded with mushroom metamaterials. The metamaterials enable the antenna to resonate at a very low frequency while the stacked patches broaden the impedance bandwidth. A particular metamaterial antenna is demonstrated in full wave calculations. A broad bandwidth of 24.6% is achieved for such a compact antenna, of which the driven and parasitic patch lengths are kept very small at the order of 0.21λ and 0.25λ respectively (λ is the wavelength of center frequency in the working bandwidth). The antenna gain is observed to be 7.26dBi while the peak efficiency is over 96% in the numerical example. The proposed antenna is suitable to be used in the portable wideband communications.","PeriodicalId":146561,"journal":{"name":"2020 9th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128859264","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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