Haiyang Wang, Bianmei Zhang, Xiaoming Liu, Xiaofan Yang, Ran Zhang, Ye Wang
A dual-band circular polarized antenna with broad bandwidth is proposed. Two circular grooves with different radii are carved on the ground to generate two frequency bands. Two rectangular slots are engraved on the outside of the circular groove. By adjusting the length of the two slots, this antenna can radiate right-handed circularly polarized (RHCP) waves at two frequency bands, which can cover GPS L5 (1.176 GHz), L2 (1.227 GHz), L1 (1.575 GHz), BDS, GALILEO, and GLONASS bands. The measured −10 dB bandwidth is 46.3 % (1.13–1.81 GHz) and 3 dB axial ratio bandwidths are 15.6 % (1.11–1.30 GHz) and 17.8 % (1.38–1.65 GHz). The measured gains are 2.51 dBi and 2.67 dBi at 1.2 GHz and 1.56 GHz, respectively.
{"title":"Dual-band circular polarized microstrip antenna for GNSS application","authors":"Haiyang Wang, Bianmei Zhang, Xiaoming Liu, Xiaofan Yang, Ran Zhang, Ye Wang","doi":"10.1515/freq-2023-0132","DOIUrl":"https://doi.org/10.1515/freq-2023-0132","url":null,"abstract":"A dual-band circular polarized antenna with broad bandwidth is proposed. Two circular grooves with different radii are carved on the ground to generate two frequency bands. Two rectangular slots are engraved on the outside of the circular groove. By adjusting the length of the two slots, this antenna can radiate right-handed circularly polarized (RHCP) waves at two frequency bands, which can cover GPS <jats:italic>L</jats:italic>5 (1.176 GHz), <jats:italic>L</jats:italic>2 (1.227 GHz), <jats:italic>L</jats:italic>1 (1.575 GHz), BDS, GALILEO, and GLONASS bands. The measured −10 dB bandwidth is 46.3 % (1.13–1.81 GHz) and 3 dB axial ratio bandwidths are 15.6 % (1.11–1.30 GHz) and 17.8 % (1.38–1.65 GHz). The measured gains are 2.51 dBi and 2.67 dBi at 1.2 GHz and 1.56 GHz, respectively.","PeriodicalId":55143,"journal":{"name":"Frequenz","volume":"7 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139752397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We proposed a high gain high-efficiency compact metallic resonator antenna operating at even-mode meander line spoof surface plasmon polaritons (MLSSPPs). The high radiation efficiency is caused by the bulk of fields crowded in lossless air near the antenna rather than in lossy dielectric as in conventional dielectric resonator antennas (DRAs). The proposed antenna also exhibits compact size because of its high effective refractive index. A reliable equivalent circuit model is proposed for the design of the resonator antenna with basic mode of half wavelength resonant mode. As an example, a meander-line SSPP antenna is designed, fabricated and measured. Both the simulated and measured results show the advantages of high efficiency and compact volume. In addition, the antenna achieves higher gain and wider relative bandwidth per wavelength cube volume compared with its counterparts. This method provides a good alternative for designing DRAs.
{"title":"High gain and high-efficiency compact resonator antennas based on spoof surface plasmon polaritons","authors":"Dou Tian, Amin Kianinejad, Jiafu Wang, Chen Guo, Anxue Zhang","doi":"10.1515/freq-2023-0164","DOIUrl":"https://doi.org/10.1515/freq-2023-0164","url":null,"abstract":"We proposed a high gain high-efficiency compact metallic resonator antenna operating at even-mode meander line spoof surface plasmon polaritons (MLSSPPs). The high radiation efficiency is caused by the bulk of fields crowded in lossless air near the antenna rather than in lossy dielectric as in conventional dielectric resonator antennas (DRAs). The proposed antenna also exhibits compact size because of its high effective refractive index. A reliable equivalent circuit model is proposed for the design of the resonator antenna with basic mode of half wavelength resonant mode. As an example, a meander-line SSPP antenna is designed, fabricated and measured. Both the simulated and measured results show the advantages of high efficiency and compact volume. In addition, the antenna achieves higher gain and wider relative bandwidth per wavelength cube volume compared with its counterparts. This method provides a good alternative for designing DRAs.","PeriodicalId":55143,"journal":{"name":"Frequenz","volume":"44 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139752264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This paper presents an accurate and efficient semianalytical method based on the Galerkin procedure for solving electromagnetic wave propagation problems in multilayer inhomogeneous cylindrical dielectric waveguides. The method represents the field in each inhomogeneous layer by a linear combination of eigenfunctions with unknown coefficients, which are expressed using the inner products of a series of basis functions, following the Galerkin procedure. The continuity of the field and its radial derivative is enforced at the interface between adjacent layers. By applying this procedure to all inhomogeneous layers, the Helmholtz equations are transformed into linear algebraic equations with expanded coefficients in matrix form, allowing the complicated wave propagation problem in a multilayer inhomogeneous waveguide to be solved as a matrix eigenvalue problem. The method is validated by providing detailed propagation characteristics for various multilayer inhomogeneous cylinders with different permittivity profiles. The accuracy and efficiency of the proposed method are demonstrated through comparisons with results obtained using other numerical techniques.
{"title":"A fast convergent solution of wave propagation for multilayer inhomogeneous cylindrical dielectric waveguides using a semianalytical method","authors":"Qianru Weng","doi":"10.1515/freq-2023-0128","DOIUrl":"https://doi.org/10.1515/freq-2023-0128","url":null,"abstract":"This paper presents an accurate and efficient semianalytical method based on the Galerkin procedure for solving electromagnetic wave propagation problems in multilayer inhomogeneous cylindrical dielectric waveguides. The method represents the field in each inhomogeneous layer by a linear combination of eigenfunctions with unknown coefficients, which are expressed using the inner products of a series of basis functions, following the Galerkin procedure. The continuity of the field and its radial derivative is enforced at the interface between adjacent layers. By applying this procedure to all inhomogeneous layers, the Helmholtz equations are transformed into linear algebraic equations with expanded coefficients in matrix form, allowing the complicated wave propagation problem in a multilayer inhomogeneous waveguide to be solved as a matrix eigenvalue problem. The method is validated by providing detailed propagation characteristics for various multilayer inhomogeneous cylinders with different permittivity profiles. The accuracy and efficiency of the proposed method are demonstrated through comparisons with results obtained using other numerical techniques.","PeriodicalId":55143,"journal":{"name":"Frequenz","volume":"57 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139752263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This article proposes a dual-band (2.4/5.8 GHz) wearable MIMO antenna system that can be applied to the ISM band. The antenna element uses an improved coplanar waveguide feeding structure. The four-element antenna system achieves high isolation between antenna elements through the self-decoupling structure of the antenna element and the orthogonal placement. The use of a floating ground structure effectively suppresses back radiation. Through the combination of coplanar waveguide feeding and floating ground, the antenna not only has a low profile but also improves the front-to-back ratio of antenna radiation, reducing the SAR value. The antenna also uses felt as a flexible dielectric substrate and conductive cloth as a radiation element, making the antenna flexible.
本文提出了一种可应用于 ISM 波段的双频（2.4/5.8 GHz）可穿戴 MIMO 天线系统。天线元件采用改进的共面波导馈电结构。通过天线元件的自解耦结构和正交放置，四元件天线系统实现了天线元件之间的高隔离度。浮地结构的使用有效抑制了背辐射。通过共面波导馈电和浮地的结合，该天线不仅外形小巧，而且提高了天线辐射的前后比，降低了 SAR 值。该天线还使用毛毡作为柔性介质基板，导电布作为辐射元件，使天线具有柔性。
{"title":"Design of a dual-band wearable flexible MIMO antenna system for ISM band applications","authors":"Lingsheng Yang, Yuhan Sun, Jiaru Zhang, Yizhuang Xie","doi":"10.1515/freq-2023-0300","DOIUrl":"https://doi.org/10.1515/freq-2023-0300","url":null,"abstract":"This article proposes a dual-band (2.4/5.8 GHz) wearable MIMO antenna system that can be applied to the ISM band. The antenna element uses an improved coplanar waveguide feeding structure. The four-element antenna system achieves high isolation between antenna elements through the self-decoupling structure of the antenna element and the orthogonal placement. The use of a floating ground structure effectively suppresses back radiation. Through the combination of coplanar waveguide feeding and floating ground, the antenna not only has a low profile but also improves the front-to-back ratio of antenna radiation, reducing the SAR value. The antenna also uses felt as a flexible dielectric substrate and conductive cloth as a radiation element, making the antenna flexible.","PeriodicalId":55143,"journal":{"name":"Frequenz","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139752214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A simple technique for gain enhancement of irregular hexagonal shaped ultra-wide band (UWB) slot antenna by inclusion of closely packed tessellated rhombic loop (TRL) based FSS is presented in this paper. The slot antenna is designed to cover entire UWB (3.1–10.6 GHz) frequency range with stable bi-directional radiation pattern. Also, it exhibits non-uniform boresight gain in zenith (θ = 0°) and nadir (θ = 180°) directions. The slot antenna is further loaded with TRL FSS at both slot and feed side separately to study distinct configurations of antenna integrated with FSS and evaluate the impact of the configurations of FSS on antenna performance. Later, an antenna and antenna loaded with TRL FSS prototype are developed for experimental validations. Through measurements it is found that the slot antenna covers entire UWB frequency band and provides a maximum of 4.31 dB gain in zenith direction while 4 dB gain in nadir direction. A gain enhancement of 2.44 dB in zenith and 3.8 dB in nadir directions are achieved when the slot antenna is integrated with TRL FSS along feed side and slot side separately. The measured results confirm the simulated results well.
{"title":"Gain enhancement of ultra-wideband hexagonal slot antenna using tessellated rhombic loops based reflector","authors":"Ashish Kumar Verma, Rahul Singhal","doi":"10.1515/freq-2023-0183","DOIUrl":"https://doi.org/10.1515/freq-2023-0183","url":null,"abstract":"A simple technique for gain enhancement of irregular hexagonal shaped ultra-wide band (UWB) slot antenna by inclusion of closely packed tessellated rhombic loop (TRL) based FSS is presented in this paper. The slot antenna is designed to cover entire UWB (3.1–10.6 GHz) frequency range with stable bi-directional radiation pattern. Also, it exhibits non-uniform boresight gain in zenith (<jats:italic>θ</jats:italic> = 0°) and nadir (<jats:italic>θ</jats:italic> = 180°) directions. The slot antenna is further loaded with TRL FSS at both slot and feed side separately to study distinct configurations of antenna integrated with FSS and evaluate the impact of the configurations of FSS on antenna performance. Later, an antenna and antenna loaded with TRL FSS prototype are developed for experimental validations. Through measurements it is found that the slot antenna covers entire UWB frequency band and provides a maximum of 4.31 dB gain in zenith direction while 4 dB gain in nadir direction. A gain enhancement of 2.44 dB in zenith and 3.8 dB in nadir directions are achieved when the slot antenna is integrated with TRL FSS along feed side and slot side separately. The measured results confirm the simulated results well.","PeriodicalId":55143,"journal":{"name":"Frequenz","volume":"87 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139752211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This article is an attempt to design and develop a metamaterial-based microwave absorber with a low profile, broad incidence angle and compactness in the microwave frequency range. Further, equivalent circuit model of the proposed structure is discussed based on circuit theory. The unit cell focuses on achieving maximum absorption at C-, X-, and K-band. The dimensions of the proposed design are ultrathin and compact, having an overall size of 8 mm × 8 mm × 0.8 mm. The dimensions are optimized in such a fashion to achieve three different peaks at three various bands (C, X and K), thereby making the triple-band behaviour of the metamaterial absorber possible. The structure provides absorption of 98.26 % absorption at 7.76 GHz (C-band) while absorption of 96.74 % is achieved at 10.26 GHz (X-band) and 99.92 % absorption at 19.32 GHz (K-band) of microwave regime. The experimental verification of design conform that the measured results are found to be in close agreement to simulated ones.
本文试图设计和开发一种基于超材料的微波吸收器，在微波频率范围内具有低剖面、宽入射角和结构紧凑的特点。此外，还基于电路理论讨论了所提结构的等效电路模型。单元单元的重点是实现 C 波段、X 波段和 K 波段的最大吸收。拟议设计的尺寸超薄、紧凑，整体尺寸为 8 毫米 × 8 毫米 × 0.8 毫米。通过对尺寸进行优化，在三个不同波段（C、X 和 K 波段）实现了三个不同的峰值，从而使超材料吸收器的三波段行为成为可能。该结构在 7.76 千兆赫（C 波段）的吸收率为 98.26%，在 10.26 千兆赫（X 波段）的吸收率为 96.74%，在 19.32 千兆赫（K 波段）的吸收率为 99.92%。设计的实验验证表明，测量结果与模拟结果非常吻合。
{"title":"Design and equivalent circuit modelling of super compact ultrathin metamaterial absorber for microwave frequency Regime","authors":"Vishal Puri, Hari Shankar Singh","doi":"10.1515/freq-2023-0352","DOIUrl":"https://doi.org/10.1515/freq-2023-0352","url":null,"abstract":"This article is an attempt to design and develop a metamaterial-based microwave absorber with a low profile, broad incidence angle and compactness in the microwave frequency range. Further, equivalent circuit model of the proposed structure is discussed based on circuit theory. The unit cell focuses on achieving maximum absorption at C-, X-, and K-band. The dimensions of the proposed design are ultrathin and compact, having an overall size of 8 mm × 8 mm × 0.8 mm. The dimensions are optimized in such a fashion to achieve three different peaks at three various bands (C, X and K), thereby making the triple-band behaviour of the metamaterial absorber possible. The structure provides absorption of 98.26 % absorption at 7.76 GHz (C-band) while absorption of 96.74 % is achieved at 10.26 GHz (X-band) and 99.92 % absorption at 19.32 GHz (K-band) of microwave regime. The experimental verification of design conform that the measured results are found to be in close agreement to simulated ones.","PeriodicalId":55143,"journal":{"name":"Frequenz","volume":"8 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139752400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chunyan Song, Mo Li, Weidong Zhang, Xiaodong Wu, Song Gao
Based on the theory of coplanar waveguide (CPW) transmission line, a novel microwave non-destructive strain monitoring sensor specifically designed for cement-based material structures is presented in this study. The aim is to establish the relationship between the variation of the S11 phase parameter of the CPW strain sensor and the structural strain, utilizing a linear analysis. The feasibility of the strain monitoring by the CPW sensor is validated through simulations and experiments. The obtained results demonstrate a strong linear correlation between the phase change of the S11 parameter and the strain, with a goodness of fit of 0.987. The simulated strain sensor exhibits a sensitivity of 48.83 ppm/με, while the experimental measurement sensor shows a sensitivity of 65.82 ppm/με. These findings highlight the potential significance of the proposed method, offering a new approach that is characterized by high sensitivity, low cost, and simplicity for strain monitoring in concrete structures. Among them, the sensor cement mortar matrix made in this study was mixed with the recycled material made of waste glass steel FRP after a certain treatment process. The development of this method holds promise for the advancement of health monitoring in concrete structures.
{"title":"A study into strain sensor of cement-based material using CPW transmission lines","authors":"Chunyan Song, Mo Li, Weidong Zhang, Xiaodong Wu, Song Gao","doi":"10.1515/freq-2023-0258","DOIUrl":"https://doi.org/10.1515/freq-2023-0258","url":null,"abstract":"Based on the theory of coplanar waveguide (CPW) transmission line, a novel microwave non-destructive strain monitoring sensor specifically designed for cement-based material structures is presented in this study. The aim is to establish the relationship between the variation of the S11 phase parameter of the CPW strain sensor and the structural strain, utilizing a linear analysis. The feasibility of the strain monitoring by the CPW sensor is validated through simulations and experiments. The obtained results demonstrate a strong linear correlation between the phase change of the S11 parameter and the strain, with a goodness of fit of 0.987. The simulated strain sensor exhibits a sensitivity of 48.83 ppm/με, while the experimental measurement sensor shows a sensitivity of 65.82 ppm/με. These findings highlight the potential significance of the proposed method, offering a new approach that is characterized by high sensitivity, low cost, and simplicity for strain monitoring in concrete structures. Among them, the sensor cement mortar matrix made in this study was mixed with the recycled material made of waste glass steel FRP after a certain treatment process. The development of this method holds promise for the advancement of health monitoring in concrete structures.","PeriodicalId":55143,"journal":{"name":"Frequenz","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139752377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
An 8 × 8 tri-arm multiple-input multiple-output (MIMO) array using novel even–odd mode decouplers is presented. To decouple the directly connected driven ports on the tri-arm antenna pair, a T-shaped stub working as an even-mode decoupler and a narrow strip working as an odd-mode decoupler are elaborately introduced. Therefore, the even-mode and odd-mode impedances cross with the antenna input impedance, and a deep coupling zero is achieved at this cross frequency. Finally, the proposed 8 × 8 MIMO array was developed, fabricated, and measured for further performance verification. The measured results show that the proposed array can have a wide isolation bandwidth of 17.2 % with a compact size of 0.44λ0 × 0.08λ0 and zero clearance requirement on the ground plane. The diversity performances are also investigated with the measured worst envelope correlation coefficient less than 0.05.
{"title":"Tri-arm MIMO array antenna pair for mobile phone applications","authors":"Min Zhang, Lehu Wen, Wenchao Xiao","doi":"10.1515/freq-2023-0154","DOIUrl":"https://doi.org/10.1515/freq-2023-0154","url":null,"abstract":"An 8 × 8 tri-arm multiple-input multiple-output (MIMO) array using novel even–odd mode decouplers is presented. To decouple the directly connected driven ports on the tri-arm antenna pair, a T-shaped stub working as an even-mode decoupler and a narrow strip working as an odd-mode decoupler are elaborately introduced. Therefore, the even-mode and odd-mode impedances cross with the antenna input impedance, and a deep coupling zero is achieved at this cross frequency. Finally, the proposed 8 × 8 MIMO array was developed, fabricated, and measured for further performance verification. The measured results show that the proposed array can have a wide isolation bandwidth of 17.2 % with a compact size of 0.44<jats:italic>λ</jats:italic> <jats:sub>0</jats:sub> × 0.08<jats:italic>λ</jats:italic> <jats:sub>0</jats:sub> and zero clearance requirement on the ground plane. The diversity performances are also investigated with the measured worst envelope correlation coefficient less than 0.05.","PeriodicalId":55143,"journal":{"name":"Frequenz","volume":"74 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139752265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The paper proposes a high gain, low ECC, and high isolation THz MIMO antenna array for future generation wireless applications to accommodate a growing population of mobile users. A THz MIMO antenna array is designed with dimensions of 1200 × 2200 × 191.29 µm3. It employs the array of double-slit complementary split-ring resonators (D-CSRRs) on the bottom layer to improve the gain, return loss, and isolation. The gain of the proposed antenna array is 11.3 dBi with 66.45 % radiating efficiency at 0.65 THz. The −10 dB impedance bandwidth lies from 0.62–0.66 THz. The parameters of the MIMO antenna are evaluated such as isolation, envelope correlation coefficient (ECC), diversity gain (DG), and channel capacity loss. The ECC and DG value observed are 2.84 × 10−6 and 9.98 dB, respectively, at 0.65 THz. The channel capacity loss and isolation of the proposed MIMO antenna array are below 0.4 bps/Hz and (|S21| > 25 dB), respectively, in the complete operating band. The suggested THz MIMO antenna array can be utilised for THz high-speed wireless communication, video-rate imaging systems, sensing, the medical field for cancer imaging, security scanning, and the detection of illicit goods.
{"title":"Terahertz MIMO antenna array for future generation of wireless applications","authors":"Rashmi Pant, Leeladhar Malviya","doi":"10.1515/freq-2023-0203","DOIUrl":"https://doi.org/10.1515/freq-2023-0203","url":null,"abstract":"The paper proposes a high gain, low ECC, and high isolation THz MIMO antenna array for future generation wireless applications to accommodate a growing population of mobile users. A THz MIMO antenna array is designed with dimensions of 1200 × 2200 × 191.29 µm<jats:sup>3</jats:sup>. It employs the array of double-slit complementary split-ring resonators (D-CSRRs) on the bottom layer to improve the gain, return loss, and isolation. The gain of the proposed antenna array is 11.3 dBi with 66.45 % radiating efficiency at 0.65 THz. The −10 dB impedance bandwidth lies from 0.62–0.66 THz. The parameters of the MIMO antenna are evaluated such as isolation, envelope correlation coefficient (ECC), diversity gain (DG), and channel capacity loss. The ECC and DG value observed are 2.84 × 10<jats:sup>−6</jats:sup> and 9.98 dB, respectively, at 0.65 THz. The channel capacity loss and isolation of the proposed MIMO antenna array are below 0.4 bps/Hz and (|<jats:italic>S</jats:italic> <jats:sub>21</jats:sub>| > 25 dB), respectively, in the complete operating band. The suggested THz MIMO antenna array can be utilised for THz high-speed wireless communication, video-rate imaging systems, sensing, the medical field for cancer imaging, security scanning, and the detection of illicit goods.","PeriodicalId":55143,"journal":{"name":"Frequenz","volume":"6 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139752266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract This article presents a novel compact design of an annular ring microstrip antenna (ARMSA), which has two stacked annular rings and is fabricated on a FR4 substrate for radar and satellite applications. The presence of different kinds of slots made the design of the recommended antenna very unique for Ku band applications. This novel compact structure of the antenna provided enhanced bandwidth and high gain. The suggested antenna works in Ku band and has 2.70 GHz bandwidth and 8.42 dB gain, which makes it suitable for satellite applications. The quality parameters of the proposed annular ring microstrip antenna have been compared with other existing annular ring microstrip antennas, which shows its efficient performance.
摘要 本文介绍了一种新颖紧凑的环形微带天线（ARMSA）设计，它有两个堆叠的环形，在 FR4 基板上制造，用于雷达和卫星应用。不同类型槽的存在使所推荐的天线设计在 Ku 波段应用中非常独特。这种新颖紧凑的天线结构提供了更高的带宽和增益。建议的天线工作在 Ku 波段，带宽为 2.70 GHz，增益为 8.42 dB，适合卫星应用。所建议的环形微带天线的质量参数与其他现有环形微带天线进行了比较，显示出其高效的性能。
{"title":"A novel broadband and high-gain compact annular ring microstrip antenna for satellite applications","authors":"Vivek Arya, Tanuj K. Garg","doi":"10.1515/freq-2023-0102","DOIUrl":"https://doi.org/10.1515/freq-2023-0102","url":null,"abstract":"Abstract This article presents a novel compact design of an annular ring microstrip antenna (ARMSA), which has two stacked annular rings and is fabricated on a FR4 substrate for radar and satellite applications. The presence of different kinds of slots made the design of the recommended antenna very unique for Ku band applications. This novel compact structure of the antenna provided enhanced bandwidth and high gain. The suggested antenna works in Ku band and has 2.70 GHz bandwidth and 8.42 dB gain, which makes it suitable for satellite applications. The quality parameters of the proposed annular ring microstrip antenna have been compared with other existing annular ring microstrip antennas, which shows its efficient performance.","PeriodicalId":55143,"journal":{"name":"Frequenz","volume":"50 2","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139437383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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