Pub Date : 2019-12-01DOI: 10.1109/PIERS-Fall48861.2019.9021415
Y. Zhang, M. Chen, L. Jiang
Recently, electromagnetic (EM) beams with the orbital angular momentum (OAM) have been explored for multiplexing in communication systems. Each OAM mode is encoded with data and can be identified by the OAM index, namely the topological charge. So far, the amplitude of OAM mode is gaining more attention for its application as another modulation format. Therefore, it is of great importance to accurately extract both the OAM index and corresponding amplitude. In this paper, we propose a modified dynamic mode decomposition (DMD) approach for the analysis of OAM modes. It is shown that not only topological charges but also high-resolution amplitude patterns of both single OAM mode and composite OAM modes can be obtained. The proposed approach provides an effective tool for the demultiplexing of OAM-carrying beams, especially in the case when the amplitude information is required.
{"title":"A Novel Analysis Method of Electromagnetic Vortex Wave Based on Modified Dynamic Mode Decomposition","authors":"Y. Zhang, M. Chen, L. Jiang","doi":"10.1109/PIERS-Fall48861.2019.9021415","DOIUrl":"https://doi.org/10.1109/PIERS-Fall48861.2019.9021415","url":null,"abstract":"Recently, electromagnetic (EM) beams with the orbital angular momentum (OAM) have been explored for multiplexing in communication systems. Each OAM mode is encoded with data and can be identified by the OAM index, namely the topological charge. So far, the amplitude of OAM mode is gaining more attention for its application as another modulation format. Therefore, it is of great importance to accurately extract both the OAM index and corresponding amplitude. In this paper, we propose a modified dynamic mode decomposition (DMD) approach for the analysis of OAM modes. It is shown that not only topological charges but also high-resolution amplitude patterns of both single OAM mode and composite OAM modes can be obtained. The proposed approach provides an effective tool for the demultiplexing of OAM-carrying beams, especially in the case when the amplitude information is required.","PeriodicalId":197451,"journal":{"name":"2019 Photonics & Electromagnetics Research Symposium - Fall (PIERS - Fall)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116467644","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 : 2019-12-01DOI: 10.1109/PIERS-Fall48861.2019.9021708
Yanlei Du, L. Tsang, Jian Yang
In order to address the issues of the high accuracy requirement and computational consumption in numerical simulations of ocean emissivity, a new method is proposed by merging the Nystrom method, the neighborhood impedance boundary condition (NIBC), as well as the sparse matrix canonical grid (SMCG) method. The new approach is used to solve the dual surface integral equations (SIE) and calculate the ocean emissivity. It is validated against the developed Nystrom/NIBC method and shown it has the properties of high precision, fast operation and memory saving. We then use it to calculate the broadband emissivities of large-scale polar ocean. Simulation results are illustrated for 0.5–2GHz and show that the energy conservations are obeyed to 10−4, which meet the accuracy requirement of retrieving polar ocean salinity within 0.2psu. The effects of roughness and SSS on ocean emissivity are also investigated.
{"title":"An NIBC/Nystrom/SMCG Method Implemented with MoM for Broadband Emissivities from Large-scale Polar Ocean Surfaces","authors":"Yanlei Du, L. Tsang, Jian Yang","doi":"10.1109/PIERS-Fall48861.2019.9021708","DOIUrl":"https://doi.org/10.1109/PIERS-Fall48861.2019.9021708","url":null,"abstract":"In order to address the issues of the high accuracy requirement and computational consumption in numerical simulations of ocean emissivity, a new method is proposed by merging the Nystrom method, the neighborhood impedance boundary condition (NIBC), as well as the sparse matrix canonical grid (SMCG) method. The new approach is used to solve the dual surface integral equations (SIE) and calculate the ocean emissivity. It is validated against the developed Nystrom/NIBC method and shown it has the properties of high precision, fast operation and memory saving. We then use it to calculate the broadband emissivities of large-scale polar ocean. Simulation results are illustrated for 0.5–2GHz and show that the energy conservations are obeyed to 10−4, which meet the accuracy requirement of retrieving polar ocean salinity within 0.2psu. The effects of roughness and SSS on ocean emissivity are also investigated.","PeriodicalId":197451,"journal":{"name":"2019 Photonics & Electromagnetics Research Symposium - Fall (PIERS - Fall)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121965874","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 : 2019-12-01DOI: 10.1109/PIERS-Fall48861.2019.9021326
Shahid Ullah, C. Ruan, M. S. Sadiq, Tanveer ul Haq, A. Fahad
In this paper, a low cost, high efficient, ultra-wideband (UWB), S-shaped monopole antenna is designed and implemented. It can present meander new logical structure antenna which uses a coupling mechanism to improve the bandwidth of operating frequency. The total size of the antenna is 41×39×1.57 mm3. The antenna is operating in S/C/X bands with a wide bandwidth of 12.55 GHz (2.9–15.45 GHz) and suitable for wireless local area network (WLAN), Worldwide Interoperability for Microwave Access (WiMAX), and for ultra-wideband (UWB) applications. It is a multifunctional antenna that can be used to reduce the use of multiple antennas in a wireless communication network. Monopole antenna is used because it has multiple applications for UWB. The antenna is simple in structure, wide bandwidth, acceptable omnidirectional properties, ease of fabrication, light weight and a low cost. Waveguide transformer is used in the feeding line of the antenna. The simulated and measured results show that the antenna has 137% fractional bandwidth and 5.96 dBi gains are achieved at 9 GHz in the operating frequencies.
{"title":"S-shaped High Efficient Meander Monopole Antenna for WLAN/WIMAX/Ultra Wide Band (UWB) Applications","authors":"Shahid Ullah, C. Ruan, M. S. Sadiq, Tanveer ul Haq, A. Fahad","doi":"10.1109/PIERS-Fall48861.2019.9021326","DOIUrl":"https://doi.org/10.1109/PIERS-Fall48861.2019.9021326","url":null,"abstract":"In this paper, a low cost, high efficient, ultra-wideband (UWB), S-shaped monopole antenna is designed and implemented. It can present meander new logical structure antenna which uses a coupling mechanism to improve the bandwidth of operating frequency. The total size of the antenna is 41×39×1.57 mm3. The antenna is operating in S/C/X bands with a wide bandwidth of 12.55 GHz (2.9–15.45 GHz) and suitable for wireless local area network (WLAN), Worldwide Interoperability for Microwave Access (WiMAX), and for ultra-wideband (UWB) applications. It is a multifunctional antenna that can be used to reduce the use of multiple antennas in a wireless communication network. Monopole antenna is used because it has multiple applications for UWB. The antenna is simple in structure, wide bandwidth, acceptable omnidirectional properties, ease of fabrication, light weight and a low cost. Waveguide transformer is used in the feeding line of the antenna. The simulated and measured results show that the antenna has 137% fractional bandwidth and 5.96 dBi gains are achieved at 9 GHz in the operating frequencies.","PeriodicalId":197451,"journal":{"name":"2019 Photonics & Electromagnetics Research Symposium - Fall (PIERS - Fall)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122104171","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 : 2019-12-01DOI: 10.1109/PIERS-Fall48861.2019.9021668
Yong-quan Jiang, Chongjiang Mo, Wenqiang Chen, Dewang Kong
It is generally accepted that the design of reflector used in Compact Antenna Test Range (CATR) is a challenging job for a long time, especially for the design of its serrations. In order to solve the addressed problem above, this paper will mainly include four parts as (1) Choosing an appropriate algorithm in software to conduct simulation effectively under certain frequency. (2) Studying the scattering mechanism of the reflector’s rim. (3) Comparing the quiet zone characteristics between reflectors with different serrations which are commonly used. (4) Offering guidance parameter configuration to obtain proper serrations. At last, we can come to the conclusion that the theory analysis agrees with the simulation results.
{"title":"Research on Serrations of Reflector Used in CATR","authors":"Yong-quan Jiang, Chongjiang Mo, Wenqiang Chen, Dewang Kong","doi":"10.1109/PIERS-Fall48861.2019.9021668","DOIUrl":"https://doi.org/10.1109/PIERS-Fall48861.2019.9021668","url":null,"abstract":"It is generally accepted that the design of reflector used in Compact Antenna Test Range (CATR) is a challenging job for a long time, especially for the design of its serrations. In order to solve the addressed problem above, this paper will mainly include four parts as (1) Choosing an appropriate algorithm in software to conduct simulation effectively under certain frequency. (2) Studying the scattering mechanism of the reflector’s rim. (3) Comparing the quiet zone characteristics between reflectors with different serrations which are commonly used. (4) Offering guidance parameter configuration to obtain proper serrations. At last, we can come to the conclusion that the theory analysis agrees with the simulation results.","PeriodicalId":197451,"journal":{"name":"2019 Photonics & Electromagnetics Research Symposium - Fall (PIERS - Fall)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122123942","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 : 2019-12-01DOI: 10.1109/PIERS-Fall48861.2019.9021581
Feng Yin, Xiaopeng Dong
Polarization-maintaining fibers (PMFs) are the essential element to construct high performance optical fiber sensors. However, conventional PMFs such as PANDA and Bow-tie which based on the stress induced birefringence are susceptible to environmental perturbations, such as temperature and magnet fields, etc. Owing to the flexible design of the size, shape, and arrangement of the air holes in the cladding surrounding the core region, it is possible to induce high birefringence into the hollow-core photonic bandgap fiber (HC-PBF). Moreover, since the propagation light is confined mostly in the hollow region filled with air, the temperature or other perturbation effect can be largely reduced. In this paper the birefringent property of HC-PBF is studied and analyzed with the aid of the software COMSOL 5.3, and the relations between the birefringence and the fiber parameters such as the core diameter, size, shape, and spacing of the air holes are obtained. We found that the elliptical deformation either for the hollow core or for the air holes located in the cladding will induce relatively high birefringence inside fiber. And the width and position of the bandgap is mainly determined by the air filling ratio (fair). From our simulation the geometrical birefringence of HC-PBF can be as large as 6.8 × 10-4, and the confinement loss less than 0.02 dB/m in the wavelength range from 1.4 ~ 1.5 μm.
{"title":"Design and Analysis of the Birefringent Characteristics of Hollow Core Bandgap Fiber","authors":"Feng Yin, Xiaopeng Dong","doi":"10.1109/PIERS-Fall48861.2019.9021581","DOIUrl":"https://doi.org/10.1109/PIERS-Fall48861.2019.9021581","url":null,"abstract":"Polarization-maintaining fibers (PMFs) are the essential element to construct high performance optical fiber sensors. However, conventional PMFs such as PANDA and Bow-tie which based on the stress induced birefringence are susceptible to environmental perturbations, such as temperature and magnet fields, etc. Owing to the flexible design of the size, shape, and arrangement of the air holes in the cladding surrounding the core region, it is possible to induce high birefringence into the hollow-core photonic bandgap fiber (HC-PBF). Moreover, since the propagation light is confined mostly in the hollow region filled with air, the temperature or other perturbation effect can be largely reduced. In this paper the birefringent property of HC-PBF is studied and analyzed with the aid of the software COMSOL 5.3, and the relations between the birefringence and the fiber parameters such as the core diameter, size, shape, and spacing of the air holes are obtained. We found that the elliptical deformation either for the hollow core or for the air holes located in the cladding will induce relatively high birefringence inside fiber. And the width and position of the bandgap is mainly determined by the air filling ratio (fair). From our simulation the geometrical birefringence of HC-PBF can be as large as 6.8 × 10-4, and the confinement loss less than 0.02 dB/m in the wavelength range from 1.4 ~ 1.5 μm.","PeriodicalId":197451,"journal":{"name":"2019 Photonics & Electromagnetics Research Symposium - Fall (PIERS - Fall)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120817766","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}
In this paper, a K-band driving power amplifier (DPA) with high gain and high output 1 dB compression point (P−1 dB, out) is presented, which is designed and manufactured in the 0.15-µm GaAs pHEMT process. In order to achieve high gain with simple direct current (DC) bias, the four-stage common source amplifier based on self-biased techniques are employed. The DC feed network adopts a dual inductors topology, which makes the DPA achieve a high power capacity threshold. Furthermore, in order to obtain higher linearity and P−1 dB, out, the maximum power output matching are adopted in the DPA. The DPA exhibit a measured gain more than 20 dB, and a P−1 dB, out over 16 dBm from 20 to 26 GHz and the S11 and S22 are less than −8.5 dB within the entire band of frequencies, it is just with only one DC feed pad and serviceable for the automotive radar applications.
本文提出了一种采用0.15µm GaAs pHEMT工艺设计和制造的具有高增益和高输出1db压缩点(P−1db, out)的k波段驱动功率放大器(DPA)。为了在简单的直流偏置下实现高增益，采用了基于自偏置技术的四级共源放大器。直流馈电网络采用双电感拓扑，使DPA实现了较高的功率容量阈值。此外，为了获得更高的线性度和P−1 dB out，在DPA中采用了最大功率输出匹配。DPA的测量增益超过20 dB, P - 1 dB，在20至26 GHz范围内输出超过16 dBm, S11和S22在整个频段内的频率小于- 8.5 dB，它只有一个直流馈电板，可用于汽车雷达应用。
{"title":"A K-band Driven Power Amplifier for Automotive Radar Applications in 0.15-µm GaAs pHEMT Process","authors":"Xianhu Luo, Xu Cheng, Jiangan Han, Xinlin Xia, Yingjiang Guo","doi":"10.1109/PIERS-Fall48861.2019.9021342","DOIUrl":"https://doi.org/10.1109/PIERS-Fall48861.2019.9021342","url":null,"abstract":"In this paper, a K-band driving power amplifier (DPA) with high gain and high output 1 dB compression point (P−1 dB, out) is presented, which is designed and manufactured in the 0.15-µm GaAs pHEMT process. In order to achieve high gain with simple direct current (DC) bias, the four-stage common source amplifier based on self-biased techniques are employed. The DC feed network adopts a dual inductors topology, which makes the DPA achieve a high power capacity threshold. Furthermore, in order to obtain higher linearity and P−1 dB, out, the maximum power output matching are adopted in the DPA. The DPA exhibit a measured gain more than 20 dB, and a P−1 dB, out over 16 dBm from 20 to 26 GHz and the S11 and S22 are less than −8.5 dB within the entire band of frequencies, it is just with only one DC feed pad and serviceable for the automotive radar applications.","PeriodicalId":197451,"journal":{"name":"2019 Photonics & Electromagnetics Research Symposium - Fall (PIERS - Fall)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123972360","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 : 2019-12-01DOI: 10.1109/PIERS-Fall48861.2019.9021447
Yi Lu, Juan Chen, Xumin Yu
In this paper, a single zero compensation dipole antenna for WLAN frequency band is designed. The antenna can be suspended above the space and the radiation range can cover the whole space below. The antenna is fed by the parallel transmission lines, and the radiation unit consists of a printed dipole antenna and a Yagi antenna. The printed dipole antenna is printed on both sides of the FR-4 dielectric substrate with relative permittivity of 4.3. The printed dipole antenna adopts complementary symmetry structure to optimize the non-roundness of H plane. The driver arms of the Yagi antenna are printed on both sides of the substrate, while the director and the reflector of the Yagi antenna are located in the dielectric substrate to compensate the zero point of the dipole antenna. The simulation results show that the VSWR of the antenna is less than 2 in the 2.32-2.45 GHz band. The maximum directivity is more than 1.8 dBi in the 2.322.45GHz band. The non-roundness of the H plane of the antennais less than 2dB,which shows good omni-directivity. A zero point in the radiation pattern of the E plane is compensated, and it is -1.68dBi at 2.36GHz,0.62dBi at 2.4GHz and 0.48dBi at 2.44 GHz, respectively, while the other zero point of the E plane remains below -12 dBi in the working frequency range, namely realizing the function of single zero compensation.
{"title":"Design of a Single Zero Compensation Dipole Antenna","authors":"Yi Lu, Juan Chen, Xumin Yu","doi":"10.1109/PIERS-Fall48861.2019.9021447","DOIUrl":"https://doi.org/10.1109/PIERS-Fall48861.2019.9021447","url":null,"abstract":"In this paper, a single zero compensation dipole antenna for WLAN frequency band is designed. The antenna can be suspended above the space and the radiation range can cover the whole space below. The antenna is fed by the parallel transmission lines, and the radiation unit consists of a printed dipole antenna and a Yagi antenna. The printed dipole antenna is printed on both sides of the FR-4 dielectric substrate with relative permittivity of 4.3. The printed dipole antenna adopts complementary symmetry structure to optimize the non-roundness of H plane. The driver arms of the Yagi antenna are printed on both sides of the substrate, while the director and the reflector of the Yagi antenna are located in the dielectric substrate to compensate the zero point of the dipole antenna. The simulation results show that the VSWR of the antenna is less than 2 in the 2.32-2.45 GHz band. The maximum directivity is more than 1.8 dBi in the 2.322.45GHz band. The non-roundness of the H plane of the antennais less than 2dB,which shows good omni-directivity. A zero point in the radiation pattern of the E plane is compensated, and it is -1.68dBi at 2.36GHz,0.62dBi at 2.4GHz and 0.48dBi at 2.44 GHz, respectively, while the other zero point of the E plane remains below -12 dBi in the working frequency range, namely realizing the function of single zero compensation.","PeriodicalId":197451,"journal":{"name":"2019 Photonics & Electromagnetics Research Symposium - Fall (PIERS - Fall)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124076879","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 : 2019-12-01DOI: 10.1109/PIERS-Fall48861.2019.9021499
Qing Xu, Ge Zhao, M. Tong
The electromagnetic (EM) problems with conducting objects can be described by surface integral equations (SIEs). Traditionally, the SIEs are solved by the method of moments (MoM). As an alternative method, the Nystrom scheme is proposed, which does not require any basis and testing functions and does not require conforming meshes, leading to much convenience in numerical implementations. Although the Nyström scheme has been widely used to solve various EM problems, it seldom dealt with the problems with highly sharp-corner objects and we present a robust solution method in this paper. To deal with the singularity, the closed-form formulas have been derived for evaluating singular integrals in the Cauchy-principal-value (CPV) sense. Two numerical examples are presented to demonstrate the scheme and good results have been obtained.
{"title":"Accurate Solution for Surface Integral Equations with Sharp-corner Objects Based on Nyström Scheme","authors":"Qing Xu, Ge Zhao, M. Tong","doi":"10.1109/PIERS-Fall48861.2019.9021499","DOIUrl":"https://doi.org/10.1109/PIERS-Fall48861.2019.9021499","url":null,"abstract":"The electromagnetic (EM) problems with conducting objects can be described by surface integral equations (SIEs). Traditionally, the SIEs are solved by the method of moments (MoM). As an alternative method, the Nystrom scheme is proposed, which does not require any basis and testing functions and does not require conforming meshes, leading to much convenience in numerical implementations. Although the Nyström scheme has been widely used to solve various EM problems, it seldom dealt with the problems with highly sharp-corner objects and we present a robust solution method in this paper. To deal with the singularity, the closed-form formulas have been derived for evaluating singular integrals in the Cauchy-principal-value (CPV) sense. Two numerical examples are presented to demonstrate the scheme and good results have been obtained.","PeriodicalId":197451,"journal":{"name":"2019 Photonics & Electromagnetics Research Symposium - Fall (PIERS - Fall)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125838617","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 : 2019-12-01DOI: 10.1109/PIERS-Fall48861.2019.9021383
Kai Li, Pingping Huang, W. Xu, W. Tan, Xiujuan Li, W. Hong
The arc array bistatic synthetic aperture radar (SAR) full azimuth imaging based on arc antenna array is studied. Compare with the conventional arc array monostatic SAR, advantages of the arc array bistatic SAR are that it can avoiding physical attack of the imaging platform and obtain additional information contained in the bistatic reflectivity of targets. In this paper, the imaging geometry of the arc array bistatic SAR is presented and the signal model based on this imaging geometry is established. The resolution of arc array bistatic SAR is analyzed. In addition, the arc array bistatic SAR imaging algorithm is given and validated by simulation results.
{"title":"Arc Array Bistatic Synthetic Aperture Radar for Full Azimuth Imaging","authors":"Kai Li, Pingping Huang, W. Xu, W. Tan, Xiujuan Li, W. Hong","doi":"10.1109/PIERS-Fall48861.2019.9021383","DOIUrl":"https://doi.org/10.1109/PIERS-Fall48861.2019.9021383","url":null,"abstract":"The arc array bistatic synthetic aperture radar (SAR) full azimuth imaging based on arc antenna array is studied. Compare with the conventional arc array monostatic SAR, advantages of the arc array bistatic SAR are that it can avoiding physical attack of the imaging platform and obtain additional information contained in the bistatic reflectivity of targets. In this paper, the imaging geometry of the arc array bistatic SAR is presented and the signal model based on this imaging geometry is established. The resolution of arc array bistatic SAR is analyzed. In addition, the arc array bistatic SAR imaging algorithm is given and validated by simulation results.","PeriodicalId":197451,"journal":{"name":"2019 Photonics & Electromagnetics Research Symposium - Fall (PIERS - Fall)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129452641","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 : 2019-12-01DOI: 10.1109/PIERS-Fall48861.2019.9021742
Jingjing Fan, Tao Jin, J. Liang
In this letter, a new dual-band frequency selective surface (FSS) with stable frequency responses at each band is presented. The proposed structure is designed by cascading complementary screens that are separated by a thin dielectric substrate. The proposed FSS is composed of new swastika patch and aperture elements resulting in two stable bands of operation. The designed FSS shows highly stable filtering characteristics for different polarization modes and different incident angles, and remains excellently stable as the incident angle reaches 70°. In addition, the new FSS shows sharp roll-off characteristics at C- and X-bands, respectively.
{"title":"A New Dual-band FSS with Stable Frequency Responses","authors":"Jingjing Fan, Tao Jin, J. Liang","doi":"10.1109/PIERS-Fall48861.2019.9021742","DOIUrl":"https://doi.org/10.1109/PIERS-Fall48861.2019.9021742","url":null,"abstract":"In this letter, a new dual-band frequency selective surface (FSS) with stable frequency responses at each band is presented. The proposed structure is designed by cascading complementary screens that are separated by a thin dielectric substrate. The proposed FSS is composed of new swastika patch and aperture elements resulting in two stable bands of operation. The designed FSS shows highly stable filtering characteristics for different polarization modes and different incident angles, and remains excellently stable as the incident angle reaches 70°. In addition, the new FSS shows sharp roll-off characteristics at C- and X-bands, respectively.","PeriodicalId":197451,"journal":{"name":"2019 Photonics & Electromagnetics Research Symposium - Fall (PIERS - Fall)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129704842","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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