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2021 International Symposium on Antennas and Propagation (ISAP)最新文献

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An FDTD Analysis of a Sensing Technique Based on Variation of Reflection Characteristics of an Antenna 天线反射特性变化传感技术的时域有限差分分析
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614483
Kazuki Shintani, Kenjiro Kubo, H. Iwai, S. Ibi, S. Shimizu, Takuya Kurihara, Yoshinori Suzuki
{"title":"An FDTD Analysis of a Sensing Technique Based on Variation of Reflection Characteristics of an Antenna","authors":"Kazuki Shintani, Kenjiro Kubo, H. Iwai, S. Ibi, S. Shimizu, Takuya Kurihara, Yoshinori Suzuki","doi":"10.23919/ISAP47258.2021.9614483","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614483","url":null,"abstract":"This paper discusses detection of presence of a target near an antenna. In order to clarify the feasibility of the sensing technique, we analyzed the change of the frequency characteristics of the return loss in the presence or absence of the target object near the antenna. As the target object we assume human body and a sheet of paper. Numerical analysis using the FDTD method was performed. By the results, we confirmed detectable amount of change can be observed.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123329982","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}
引用次数: 2
Design of Laptop Antenna for WLAN and Wi-Fi 6E Applications 用于WLAN和Wi-Fi 6E应用的笔记本天线设计
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614571
T. Han, Wei-Tzu Hsieh, Kai-Hong Jheng, Shih-Hua Wang, C. Sim
{"title":"Design of Laptop Antenna for WLAN and Wi-Fi 6E Applications","authors":"T. Han, Wei-Tzu Hsieh, Kai-Hong Jheng, Shih-Hua Wang, C. Sim","doi":"10.23919/ISAP47258.2021.9614571","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614571","url":null,"abstract":"This paper proposes the design of a monopole slot antenna applied to the metal ground plane of a laptop computer/notebook. The planar size of the proposed slot antenna is 27×10 mm2 and it is built on a FR4 substrate with a thickness of 0.8 mm. The proposed slot antenna is composed of a couple-feed line and two dissimilar monopole slots, in which the two slots can generate the WLAN 2.4 GHz (2400-2484 MHz) and WLAN 5 GHz (5150-5875 MHz) operational bands. Furthermore, the proposed slot antenna can also cover the recent Wi-Fi 6E operational band that covers the frequency range from 5925 to 7125 MHz.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126510598","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}
引用次数: 4
A Broadband Single-Layer Reflectarray Antenna Using Multiresonance Elements 使用多共振元件的宽带单层反射天线
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614378
Ming-Che Li, P. Huang, T. Ma
{"title":"A Broadband Single-Layer Reflectarray Antenna Using Multiresonance Elements","authors":"Ming-Che Li, P. Huang, T. Ma","doi":"10.23919/ISAP47258.2021.9614378","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614378","url":null,"abstract":"A linearly polarized X-band reflectarray (RA), based on single layer multiresonance elements, is proposed in this paper. To enhance the bandwidth, the unit cell is composed of double gapped square loops and a gapped circular annular ring. The pair of gaps are spatially orthogonal to one another, and two extra phase delay lines are attached to the outer ring. The unit cell exhibits a 600° linear phase tuning range by adjusting the length of the delay lines. A 277-element RA using a 15° offset fed horn was fabricated and measured. The measured results show a 1-dB gain bandwidth of 14.2%, and a 3-dB gain bandwidth of 26.4%. The antenna gain at 10 GHz is 25.2 dBi, which is equivalent to an aperture efficiency of 50.9%.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121598765","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}
引用次数: 0
The Design of A Single-Layer High-Gain Reflectarray Antenna with Polarization Conversion 具有偏振转换的单层高增益反射天线的设计
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614632
Min Wang, Yuxin Mo, Ya Liao, Zhengchuan Chen
{"title":"The Design of A Single-Layer High-Gain Reflectarray Antenna with Polarization Conversion","authors":"Min Wang, Yuxin Mo, Ya Liao, Zhengchuan Chen","doi":"10.23919/ISAP47258.2021.9614632","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614632","url":null,"abstract":"In this paper, a single-layer high-gain reflectarray antenna with polarization conversion is presented. The proposed reflectarray element consists of a top metallic patch, a dielectric layer and a metallic ground. And the top metallic patch is asymmetric along the x-axis and y-axis, by varying patch size and flipping the top metallic patch 180° along x-axis, full 360° reflected phase coverage with low loss is achieved. Meanwhile, the element has performance of polarization conversion. The polarization of the incident wave and the reflected wave are orthogonal. Furthermore, a 20° offset-fed single-layer high-gain reflectarray with a square aperture is composed by 26 × 26 antenna elements (390 mm × 390 mm) is proposed. The simulated gain is 31.1 dBi @10.0 GHz, and the aperture efficiency is 60.6% @10.0 GHz. The simulated 1-dB and 3-dB gain bandwidth are 14.0% (9.4 GHz – 10.8 GHz) and 23.0% (8.9 GHz – 11.2 GHz) @10.0 GHz, respectively.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121838796","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}
引用次数: 0
Measurement of Far Field Radiation Pattern of 300GHz-band Cassegrain Antenna 300ghz波段卡塞格伦天线远场辐射方向图测量
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614528
Ken Watanabe, A. Hirata, I. Watanabe, N. Sekine, A. Kasamatsu
{"title":"Measurement of Far Field Radiation Pattern of 300GHz-band Cassegrain Antenna","authors":"Ken Watanabe, A. Hirata, I. Watanabe, N. Sekine, A. Kasamatsu","doi":"10.23919/ISAP47258.2021.9614528","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614528","url":null,"abstract":"We measured far field pattern of a 300-GHz Cassegrain antenna. The far-field measurement of the high-gain antenna requires a transmission distance of several tens of meters or more, and the receiver system requires a dynamic range of more than 70 dB and high sensitivity. In this paper, we obtained a 300-GHz-band experimental radio station license in Japan and measured the far field pattern of a Cassegrain antenna with a gain of 45 dBi. We also measured the near field pattern of the antenna, and calculated the far field pattern from the near field pattern. The measured far field pattern and the calculated far field pattern from the near field pattern are in good agreement. The far field pattern agrees with the antenna pattern models described in Recommendation ITU-R that covers below 86 GHz.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125124303","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}
引用次数: 3
The Design of An All-Metal Low Profile End-Fire Array Antenna with High Gain 高增益全金属低轮廓端射阵列天线的设计
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614524
Min Wang, J. Zhang, Peng Ye, Zhengchuan Chen
{"title":"The Design of An All-Metal Low Profile End-Fire Array Antenna with High Gain","authors":"Min Wang, J. Zhang, Peng Ye, Zhengchuan Chen","doi":"10.23919/ISAP47258.2021.9614524","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614524","url":null,"abstract":"An all-metal low profile end-fire array antenna with high gain is proposed in this paper. The proposed antenna consists of a metallic ground, a transmission microstrip line and sixteen pairs of radiating elements. Each element is composed of a horizontal patch and a vertical patch, where the structure of the vertical patch is either rectangular or elliptical. One end of the element is short-circuited to ground, while the other end is connected to the transmission line. The energy from port 1 excites each radiating element along the transmission microstrip line and is finally connected by port 2. The all-metal structure reduces the manufacture difficulty and cost. Finally, the all-metal low profile end-fire array antenna is simulated. Simulated result shows the antenna has a wide bandwidth of 42.1 % in the range of 3.83 GHz to 5.87 GHz and a high gain of 15.0 dBi at 5.0 GHz.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125109766","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}
引用次数: 0
Analysis of Pyramidal Horn Antenna for Ku Band Applications Ku波段锥体喇叭天线应用分析
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614429
A. Heiman, A. Badescu
{"title":"Analysis of Pyramidal Horn Antenna for Ku Band Applications","authors":"A. Heiman, A. Badescu","doi":"10.23919/ISAP47258.2021.9614429","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614429","url":null,"abstract":"In this paper we present the design, simulation and measurement of a pyramidal horn antenna with linear polarization, operating in the Ku band at 13.3 GHz. The horn antenna is made of aluminium, weighs about 0.7 kg, the cutting of each face of the antenna was done with the help of a computer numerical control and then followed the assembly of each face of the antenna. The simulations performed with ANSYS HFSS show a maximum gain of 21.5 dB, which is in good agreement with the measured results. The pyramidal horn antenna proposed can be a very good candidate for telecommunication applications, atmospheric characterization, as the case of our project.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"245 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122830456","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}
引用次数: 2
Gain Variation of Phased-Arrays with Normally Distributed Pointing Errors 具有正态分布指向误差的相控阵增益变化
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614425
Yao-Wen Hsu
{"title":"Gain Variation of Phased-Arrays with Normally Distributed Pointing Errors","authors":"Yao-Wen Hsu","doi":"10.23919/ISAP47258.2021.9614425","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614425","url":null,"abstract":"When a phased array is placed on positioners, the limited accuracies of positioners would cause some random degradation of array gains. In this work, the array gains from an array with random rotations were evaluated and approximated by 2nd-order polynomials. Further, the probability density functions (PDF) were derived and agreed with simulations by the Monte Carlo method.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122893314","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}
引用次数: 1
A Very Compact and High Efficient Rectenna for RF Energy Harvesting Applications 一种用于射频能量收集应用的非常紧凑和高效的整流天线
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614514
Zongyu Zhang, Jiawang Li
{"title":"A Very Compact and High Efficient Rectenna for RF Energy Harvesting Applications","authors":"Zongyu Zhang, Jiawang Li","doi":"10.23919/ISAP47258.2021.9614514","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614514","url":null,"abstract":"A novel compact rectenna operated for RF energy harvesting applications at 2.45GHz with high radio frequency to direct current (RF-to-DC) conversion efficiency is presented and investigated. The maximum conversion efficiency is 72.7% at 2.45GHz when the input RF power is 12dBm. And the rectenna can maintain high conversion efficiency in a wide input power range. When the input power is between -4dBm and 18dBm, the measured conversion efficiency can reach more than 30%. The Rectenna structure is simple and the size is compact, only 30mm×30mm×0.8mm.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131336816","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}
引用次数: 2
Novel Circuit-Shape Leaky Wave Waveguide for Microwave Snow melting 用于微波融雪的新型电路型漏波波导
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614629
T. Maruyama, Shunta Kasai, Koki Shibata, M. Omiya, M. Nakatsugawa, Y. Tamayama
{"title":"Novel Circuit-Shape Leaky Wave Waveguide for Microwave Snow melting","authors":"T. Maruyama, Shunta Kasai, Koki Shibata, M. Omiya, M. Nakatsugawa, Y. Tamayama","doi":"10.23919/ISAP47258.2021.9614629","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614629","url":null,"abstract":"In a snow melting device using microwaves, it is generally necessary to install some waveguides each with a power source in order to melt snow in a planar area. This paper proposes a novel leaky wave slotted waveguide that is constructed in a circuit shape to achieve uniform snow melting for an area with a single microwave power-supply device with low cost. The behavior of the electromagnetic field in the proposed structure, in which the electromagnetic waves radiated from the feeding point go around the waveguide and return, was analyzed using the FDTD method. The electrical characteristics of the proposed waveguide simulated with parameterized position of the feeding point and the slot spacing were compared. The results clarified that the electric field strength in the upper surface direction of the waveguide increase when the slot spacing was set to the guide wavelength and the feeding point was located at the end in the longitudinal direction of the circuit.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131391982","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}
引用次数: 6
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