Pub Date : 2025-12-19DOI: 10.1016/j.aeue.2025.156179
Xin-Ran Jin , Shen-Yun Wang
To address the need for simultaneous beam control and anti-interference in wireless systems, a novel antenna array pattern synthesis method capable of beam direction and polarization steering, with flexible null position, width, and depth control, is proposed. In this method, a performance index is newly defined and maximized to calculate the optimal excitation distribution (OED) of the antenna array. The principle of the pattern synthesis is to maximize the ratio of radiated energy density directed toward the beam region over that radiated toward the sidelobe and interference regions. The beam polarization and null depth are controlled by introducing two polarization constraint matrices and a null weight. To validate the method, a dual-polarization 2 × 8 patch antenna array working at 3.4 GHz is designed. Both the simulated and measured antenna array patterns agree well with the theoretical predictions. The proposed pattern synthesis method may be applied in wireless systems where both accurate beam scanning and anti-inference are needed, such as radar detection and wireless communication systems.
{"title":"Pattern synthesis of antenna array with beam direction and polarization steering and null control","authors":"Xin-Ran Jin , Shen-Yun Wang","doi":"10.1016/j.aeue.2025.156179","DOIUrl":"10.1016/j.aeue.2025.156179","url":null,"abstract":"<div><div>To address the need for simultaneous beam control and anti-interference in wireless systems, a novel antenna array pattern synthesis method capable of beam direction and polarization steering, with flexible null position, width, and depth control, is proposed. In this method, a performance index is newly defined and maximized to calculate the optimal excitation distribution (OED) of the antenna array. The principle of the pattern synthesis is to maximize the ratio of radiated energy density directed toward the beam region over that radiated toward the sidelobe and interference regions. The beam polarization and null depth are controlled by introducing two polarization constraint matrices and a null weight. To validate the method, a dual-polarization 2 × 8 patch antenna array working at 3.4 GHz is designed. Both the simulated and measured antenna array patterns agree well with the theoretical predictions. The proposed pattern synthesis method may be applied in wireless systems where both accurate beam scanning and anti-inference are needed, such as radar detection and wireless communication systems.</div></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"206 ","pages":"Article 156179"},"PeriodicalIF":3.2,"publicationDate":"2025-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145842749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-19DOI: 10.1016/j.aeue.2025.156171
Chaoyue Zhao , Yu Luo , Ningning Yan , Kangda Hao
In this paper, an equivalent transmission line model (TLM) for multilayered uniaxial dielectric-magnetically anisotropic media is proposed, which theoretically enables the calculation of plane wave propagation characteristics in uniaxial anisotropic media. Based on Maxwell's equations, the model elucidates the directional relationships among field vectors after birefringence occurs in anisotropic media. The model calculates the refractive index and corresponding characteristic impedance for waves incident at arbitrary angles into uniaxial anisotropic media, transforming a multidimensional electromagnetic problem into a one-dimensional circuit problem. This model efficiently computes the amplitude and phase of reflection and transmission coefficients for plane waves in multilayer media at any incidence angle, with reduced computational complexity compared to traditional 4 × 4 matrix methods. Finally, validation is performed within the 10–20 GHz frequency band for a five-layer medium structure, showing excellent agreement between calculated and simulated results. The model provides a concise and efficient approach for analyzing wave propagation in anisotropic media, while its circuit-based framework will enhance the analysis of entire systems incorporating multilayer anisotropic structures.
{"title":"Equivalent transmission line model for multilayered uniaxial dielectric-magnetic anisotropic media","authors":"Chaoyue Zhao , Yu Luo , Ningning Yan , Kangda Hao","doi":"10.1016/j.aeue.2025.156171","DOIUrl":"10.1016/j.aeue.2025.156171","url":null,"abstract":"<div><div>In this paper, an equivalent transmission line model (TLM) for multilayered uniaxial dielectric-magnetically anisotropic media is proposed, which theoretically enables the calculation of plane wave propagation characteristics in uniaxial anisotropic media. Based on Maxwell's equations, the model elucidates the directional relationships among field vectors after birefringence occurs in anisotropic media. The model calculates the refractive index and corresponding characteristic impedance for waves incident at arbitrary angles into uniaxial anisotropic media, transforming a multidimensional electromagnetic problem into a one-dimensional circuit problem. This model efficiently computes the amplitude and phase of reflection and transmission coefficients for plane waves in multilayer media at any incidence angle, with reduced computational complexity compared to traditional 4 × 4 matrix methods. Finally, validation is performed within the 10–20 GHz frequency band for a five-layer medium structure, showing excellent agreement between calculated and simulated results. The model provides a concise and efficient approach for analyzing wave propagation in anisotropic media, while its circuit-based framework will enhance the analysis of entire systems incorporating multilayer anisotropic structures.</div></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"206 ","pages":"Article 156171"},"PeriodicalIF":3.2,"publicationDate":"2025-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145842750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Microwave transmission measurement while drilling (MMWD) utilizes the drill-pipe as a circular waveguide, offering high transmission rates and robust real-time performance for air-drilling applications. This paper presents the design and implementation of a high-efficiency MMWD system that addresses critical challenges including polarization mismatch, severe signal attenuation, and low level of system integration. The system operates in the dominant TE11 mode at 3.2 GHz, ensuring low-loss single-mode transmission. To enhance robustness in non-ideal drill pipes, a novel excitation scheme combining a waveguide circular polarizer with a microstrip Yagi antenna is proposed to generate circularly polarized waves. This design reduces polarization mismatch loss to below 1.8 dB while occupying only 10.4 % of the pipe's internal cross-section area. Furthermore, a spread-spectrum physical-layer transceiver implemented on a Xilinx Artix-7 FPGA enables reliable data communication with improved noise resilience. Experimental results demonstrate reliable communication at 230 kbps with bit-error rate below 10−5 under total 67 dB attenuation. Together with the modeled drill-pipe attenuation, the experimental results establish a solid theoretical and experimental foundation for long-distance real-time transmission in drilling environments.
{"title":"FPGA-based transceiver implementation with circular polarization excitation for microwave transmission measurement while drilling","authors":"Jing Chen , Liexin Peng , Wenjun Shan , Liang Lang","doi":"10.1016/j.aeue.2025.156173","DOIUrl":"10.1016/j.aeue.2025.156173","url":null,"abstract":"<div><div>Microwave transmission measurement while drilling (MMWD) utilizes the drill-pipe as a circular waveguide, offering high transmission rates and robust real-time performance for air-drilling applications. This paper presents the design and implementation of a high-efficiency MMWD system that addresses critical challenges including polarization mismatch, severe signal attenuation, and low level of system integration. The system operates in the dominant TE<sub>11</sub> mode at 3.2 GHz, ensuring low-loss single-mode transmission. To enhance robustness in non-ideal drill pipes, a novel excitation scheme combining a waveguide circular polarizer with a microstrip Yagi antenna is proposed to generate circularly polarized waves. This design reduces polarization mismatch loss to below 1.8 dB while occupying only 10.4 % of the pipe's internal cross-section area. Furthermore, a spread-spectrum physical-layer transceiver implemented on a Xilinx Artix-7 FPGA enables reliable data communication with improved noise resilience. Experimental results demonstrate reliable communication at 230 kbps with bit-error rate below 10<sup>−5</sup> under total 67 dB attenuation. Together with the modeled drill-pipe attenuation, the experimental results establish a solid theoretical and experimental foundation for long-distance real-time transmission in drilling environments.</div></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"206 ","pages":"Article 156173"},"PeriodicalIF":3.2,"publicationDate":"2025-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145885913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-19DOI: 10.1016/j.aeue.2025.156169
Yi Cao , Zhipeng Xia , Jianpeng Wang , Lei Ge
In this paper, a differentially fed dual-band dual-polarized filtering antenna with high selectivity is proposed for application in n78 and n79 band of fifth-generation (5G) communication. Based on two stacking circular patches working in TM11 mode, two radiating frequency with dual polarization is initially indicated respectively at 3.5 GHz and 4.8 GHz. Subsequently, slots, T-branches, parasitic patches, and shorting posts are introduced to expand the bandwidth of lower-band and upper-band. Meanwhile the combination of slots, parasitic patches and shorting posts successfully introduced four radiation zeros which highly improved the selectivity. Measured results show that the proposed antenna exhibits a low profile of 0.04λ0 and provides impedance bandwidths of 4 % (3.45–3.59GHz) and 6.7 % (4.59–4.91 GHz) along with maximum gains of 5.8 dBi and 8.6 dBi respectively at two working band. As expected, four radiation zeros are observed on realized gain which indicates a good selectivity.
{"title":"A differentially fed dual-band dual-polarized filtering antenna with high selectivity","authors":"Yi Cao , Zhipeng Xia , Jianpeng Wang , Lei Ge","doi":"10.1016/j.aeue.2025.156169","DOIUrl":"10.1016/j.aeue.2025.156169","url":null,"abstract":"<div><div>In this paper, a differentially fed dual-band dual-polarized filtering antenna with high selectivity is proposed for application in n78 and n79 band of fifth-generation (5G) communication. Based on two stacking circular patches working in TM<sub>11</sub> mode, two radiating frequency with dual polarization is initially indicated respectively at 3.5 GHz and 4.8 GHz. Subsequently, slots, T-branches, parasitic patches, and shorting posts are introduced to expand the bandwidth of lower-band and upper-band. Meanwhile the combination of slots, parasitic patches and shorting posts successfully introduced four radiation zeros which highly improved the selectivity. Measured results show that the proposed antenna exhibits a low profile of 0.04<em>λ</em><sub>0</sub> and provides impedance bandwidths of 4 % (3.45–3.59GHz) and 6.7 % (4.59–4.91 GHz) along with maximum gains of 5.8 dBi and 8.6 dBi respectively at two working band. As expected, four radiation zeros are observed on realized gain which indicates a good selectivity.</div></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"206 ","pages":"Article 156169"},"PeriodicalIF":3.2,"publicationDate":"2025-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145799835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-19DOI: 10.1016/j.aeue.2025.156174
Wen-Jing Guo , Tian-Le Zhang , Jian-Peng Wang , Lei Ge
This paper presents a dual-band dual-polarized (DBDP) antenna employing microstrip-slot composite resonant structure. The design innovatively integrates a cross stepped slot on the square driven patch, which simultaneously excites the slot mode and the TM12 mode to establish two distinct operational bands. A critical aspect for bandwidth enhancement is the incorporation of four trapezoidal strips and a pair of cross distributed patches, introducing an additional resonant mode that effectively broadens the bandwidth of both bands. Notably, two radiation nulls are generated through current cancellation between the parasitic elements and the driven patch, significantly improving out-of-band gain suppression. Moreover, the strategic combination of shorting pins and small patches effectively suppress the inherent radiation pattern splitting of the TM12 mode, thereby enhancing both gain and in-band stability in the upper band. For experimental validation, the proposed dual-band antenna is fabricated and measured, results demonstrate that the presented prototypes exhibit excellent performances in terms of a dual operation bands at 3.43–3.79 and 4.64–5.06 GHz with 8.5 and 7.7 dBi peak gains, 40-dB polarization isolation and a low profile of 0.075λL.
{"title":"Design of a dual-band dual-polarized antenna with microstrip-slot composite resonant structure for 5G applications","authors":"Wen-Jing Guo , Tian-Le Zhang , Jian-Peng Wang , Lei Ge","doi":"10.1016/j.aeue.2025.156174","DOIUrl":"10.1016/j.aeue.2025.156174","url":null,"abstract":"<div><div>This paper presents a dual-band dual-polarized (DBDP) antenna employing microstrip-slot composite resonant structure. The design innovatively integrates a cross stepped slot on the square driven patch, which simultaneously excites the slot mode and the TM<sub>12</sub> mode to establish two distinct operational bands. A critical aspect for bandwidth enhancement is the incorporation of four trapezoidal strips and a pair of cross distributed patches, introducing an additional resonant mode that effectively broadens the bandwidth of both bands. Notably, two radiation nulls are generated through current cancellation between the parasitic elements and the driven patch, significantly improving out-of-band gain suppression. Moreover, the strategic combination of shorting pins and small patches effectively suppress the inherent radiation pattern splitting of the TM<sub>12</sub> mode, thereby enhancing both gain and in-band stability in the upper band. For experimental validation, the proposed dual-band antenna is fabricated and measured, results demonstrate that the presented prototypes exhibit excellent performances in terms of a dual operation bands at 3.43–3.79 and 4.64–5.06 GHz with 8.5 and 7.7 dBi peak gains, 40-dB polarization isolation and a low profile of 0.075λ<sub>L</sub>.</div></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"206 ","pages":"Article 156174"},"PeriodicalIF":3.2,"publicationDate":"2025-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145842262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-18DOI: 10.1016/j.aeue.2025.156180
Binwen Wang , Hui Ning , Youjie Yan , Yan Wang , Xiaorun Li
Planar end-fire antennas are inherently compatible with the key advantages and practical requirements of solid-state pulse sources and array configurations. This paper presents a fundamental resistive loading dual-plane Vivaldi antenna model. Its unique configuration features inherent time-domain reflection voltage suppression and enhanced power-handling capacity. Critically, the introduced resistive loading has a negligible impact on the antenna’s time-domain radiation performance. Building upon this foundational model, an element antenna for large-scale arrays in electromagnetic vulnerability testing is further developed, conforming to a paper size. Measurements under monopolar pulse excitation (270 ps rise time) demonstrate a consistent effective potential gain of 1.5 with or without loading, while resistive loading reduces the time-domain reflection voltage peak by 68%. Moreover, the design achieves an optimized S11 −15 dB from 0.60 to 2.84 GHz while maintaining a stable, high gain (5.18 dBi) across this band. The proposed design successfully concurrently integrates low reflection, high gain, and improved power tolerance, offering a comprehensive and effective solution for UWB short-pulse radiation.
{"title":"Dual-plane Vivaldi antenna with inherent reflection suppression for UWB pulse applications","authors":"Binwen Wang , Hui Ning , Youjie Yan , Yan Wang , Xiaorun Li","doi":"10.1016/j.aeue.2025.156180","DOIUrl":"10.1016/j.aeue.2025.156180","url":null,"abstract":"<div><div>Planar end-fire antennas are inherently compatible with the key advantages and practical requirements of solid-state pulse sources and array configurations. This paper presents a fundamental resistive loading dual-plane Vivaldi antenna model. Its unique configuration features inherent time-domain reflection voltage suppression and enhanced power-handling capacity. Critically, the introduced resistive loading has a negligible impact on the antenna’s time-domain radiation performance. Building upon this foundational model, an element antenna for large-scale arrays in electromagnetic vulnerability testing is further developed, conforming to a <span><math><mrow><mi>A</mi><mn>4</mn></mrow></math></span> paper size. Measurements under monopolar pulse excitation (270 ps rise time) demonstrate a consistent effective potential gain of 1.5 with or without loading, while resistive loading reduces the time-domain reflection voltage peak by 68%. Moreover, the design achieves an optimized S11<span><math><mo><</mo></math></span> −15 dB from 0.60 to 2.84 GHz while maintaining a stable, high gain (<span><math><mo>≥</mo></math></span>5.18 dBi) across this band. The proposed design successfully concurrently integrates low reflection, high gain, and improved power tolerance, offering a comprehensive and effective solution for UWB short-pulse radiation.</div></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"206 ","pages":"Article 156180"},"PeriodicalIF":3.2,"publicationDate":"2025-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145799834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-15DOI: 10.1016/j.aeue.2025.156177
Jie Ma , Zhi Yu Bi , Zhan Yi Fu , Han Zhang , Li Wei Yan , Xiao Jian Fu , Jun Wei Wu , Fei Yang
This paper presents a loaded-line phase shifter with wide phase-shifting range based on Spoof Surface Plasmon Polaritons (SSPPs) with interdigital capacitors and p-i-n diodes. The operating principle of digital phase shifting is first investigated, followed by an analysis of the dispersion characteristics. Through tailored dispersion engineering, a phase shifter based on the proposed unit cells is then designed, with simulated transmission characteristics validating the dispersion analysis. Experimental measurements confirm the design’s clear superiority over conventional loaded-line phase shifters. The fabricated prototype exhibits a stable phase shift step from 4.5 GHz to 5.2 GHz, a phase shift range of 0°to 280°, and an insertion loss below 3 dB.
{"title":"A periodically loaded line phase shifter based on spoof plasmon polariton concept","authors":"Jie Ma , Zhi Yu Bi , Zhan Yi Fu , Han Zhang , Li Wei Yan , Xiao Jian Fu , Jun Wei Wu , Fei Yang","doi":"10.1016/j.aeue.2025.156177","DOIUrl":"10.1016/j.aeue.2025.156177","url":null,"abstract":"<div><div>This paper presents a loaded-line phase shifter with wide phase-shifting range based on Spoof Surface Plasmon Polaritons (SSPPs) with interdigital capacitors and p-i-n diodes. The operating principle of digital phase shifting is first investigated, followed by an analysis of the dispersion characteristics. Through tailored dispersion engineering, a phase shifter based on the proposed unit cells is then designed, with simulated transmission characteristics validating the dispersion analysis. Experimental measurements confirm the design’s clear superiority over conventional loaded-line phase shifters. The fabricated prototype exhibits a stable phase shift step from 4.5 GHz to 5.2 GHz, a phase shift range of 0°to 280°, and an insertion loss below 3 dB.</div></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"205 ","pages":"Article 156177"},"PeriodicalIF":3.2,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145790138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This research article proposes a current-mode circuit-based memristor emulator. The proposed emulator distinguishes itself from others in the literature through its simplicity and high-frequency responsiveness (100 MHz). It supports both increasing and decreasing modes of operation. A Comprehensive analysis of non-ideal behavior, including parasitic effects, temperature, and process corner variations, ensures the robustness of the proposed emulator. The suggested emulator is used to design a relaxation oscillator for biomedical applications and adaptive neural network for neuromorphic application. The proposed memristor emulator’s design and verification are performed using a 180 nm CMOS technology. The proposed design has also been verified using ICs CA3080 and AD844.
{"title":"A high-frequency memristor emulator: A novel design based on current mode analog building blocks","authors":"Gouranga Mandal , Mourina Ghosh , Shekhar Suman Borah , Pulak Mondal , Santosh Kumar","doi":"10.1016/j.aeue.2025.156176","DOIUrl":"10.1016/j.aeue.2025.156176","url":null,"abstract":"<div><div>This research article proposes a current-mode circuit-based memristor emulator. The proposed emulator distinguishes itself from others in the literature through its simplicity and high-frequency responsiveness (100 MHz). It supports both increasing and decreasing modes of operation. A Comprehensive analysis of non-ideal behavior, including parasitic effects, temperature, and process corner variations, ensures the robustness of the proposed emulator. The suggested emulator is used to design a relaxation oscillator for biomedical applications and adaptive neural network for neuromorphic application. The proposed memristor emulator’s design and verification are performed using a 180 nm CMOS technology. The proposed design has also been verified using ICs CA3080 and AD844.</div></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"205 ","pages":"Article 156176"},"PeriodicalIF":3.2,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145790139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-13DOI: 10.1016/j.aeue.2025.156172
Yong-Dan Kong, Ji Qi, Qing-Xin Chu
A substrate integrated waveguide (SIW) H-plane horn antenna featuring wideband filtering characteristics and a reduced longitudinal size is proposed in this paper. Firstly, the extra substrates and dipole array are loaded on the conventional SIW H-plane horn antenna for enhancing the impedance matching at the horn aperture. Secondly, the horn’s longitudinal dimension is significantly shortened by nearly 70% for miniaturization; whereas, the field distributions at the horn aperture are destroyed, which results in the decreased gain. Thirdly, by adopting three sets of metal-via arrays and four slits, the gain is improved as the quasi-uniform phase and amplitude distributions. Furthermore, two modes of radiation are also generated below and above the passband, which generates two radiation nulls on the gain curve, thus realizing the filtering response in Ka band while keeping the horn size unchanged. Finally, the proposed antenna is fabricated, and the proposed antenna achieves wideband filtering response with the impedance bandwidth of 27.27% (30.4–40 GHz) and two radiation nulls. The peak gain is 12.27 dB.
{"title":"SIW H-plane wideband filtering horn antenna with miniaturized longitudinal dimension","authors":"Yong-Dan Kong, Ji Qi, Qing-Xin Chu","doi":"10.1016/j.aeue.2025.156172","DOIUrl":"10.1016/j.aeue.2025.156172","url":null,"abstract":"<div><div>A substrate integrated waveguide (SIW) H-plane horn antenna featuring wideband filtering characteristics and a reduced longitudinal size is proposed in this paper. Firstly, the extra substrates and dipole array are loaded on the conventional SIW H-plane horn antenna for enhancing the impedance matching at the horn aperture. Secondly, the horn’s longitudinal dimension is significantly shortened by nearly 70% for miniaturization; whereas, the field distributions at the horn aperture are destroyed, which results in the decreased gain. Thirdly, by adopting three sets of metal-via arrays and four slits, the gain is improved as the quasi-uniform phase and amplitude distributions. Furthermore, two modes of radiation are also generated below and above the passband, which generates two radiation nulls on the gain curve, thus realizing the filtering response in Ka band while keeping the horn size unchanged. Finally, the proposed antenna is fabricated, and the proposed antenna achieves wideband filtering response with the impedance bandwidth of 27.27% (30.4–40 GHz) and two radiation nulls. The peak gain is 12.27 dB.</div></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"205 ","pages":"Article 156172"},"PeriodicalIF":3.2,"publicationDate":"2025-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145790136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-13DOI: 10.1016/j.aeue.2025.156175
Mi Lin, Xuanxuan Zhou, Chong Zhang, Jiapan Wang
Emotion is a psychological state triggered by the presentation, cessation, or absence of reward or punishment stimuli, and can also be seen as a set of responses elicited by instrumental reinforcers, where rewards and punishments serve as such stimuli to provoke emotional reactions. Emotions are integral to human cognition and behavior, serving as a driving force for various physical actions. This study presents a memristive emotion-driven behavior circuit, designed to simulate the influence of reward and punishment mechanisms on emotional and behavioral responses. The Self-Responding Emotional Behavior (SEB) model is employed to explain the generation of emotions, motivational behaviors, and the neural mechanisms underlying these processes. The circuit replicates how rewards, punishments, and other reinforcers modulate emotional responses, facilitating the generation of emotion-driven behaviors, the formation of associative emotional reactions, and the expression of emotions triggered by environmental stimuli. Ultimately, this memristive circuit is intended for integration into the emotion module of interactive robots, providing a reference for enhancing robots’ emotional responses to external stimuli. This work contributes to the development of robots capable of emotional expression and responsive interaction with humans.
{"title":"Design and application of memristive emotion-driven behavior circuit influenced by reward and punishment mechanisms","authors":"Mi Lin, Xuanxuan Zhou, Chong Zhang, Jiapan Wang","doi":"10.1016/j.aeue.2025.156175","DOIUrl":"10.1016/j.aeue.2025.156175","url":null,"abstract":"<div><div>Emotion is a psychological state triggered by the presentation, cessation, or absence of reward or punishment stimuli, and can also be seen as a set of responses elicited by instrumental reinforcers, where rewards and punishments serve as such stimuli to provoke emotional reactions. Emotions are integral to human cognition and behavior, serving as a driving force for various physical actions. This study presents a memristive emotion-driven behavior circuit, designed to simulate the influence of reward and punishment mechanisms on emotional and behavioral responses. The Self-Responding Emotional Behavior (SEB) model is employed to explain the generation of emotions, motivational behaviors, and the neural mechanisms underlying these processes. The circuit replicates how rewards, punishments, and other reinforcers modulate emotional responses, facilitating the generation of emotion-driven behaviors, the formation of associative emotional reactions, and the expression of emotions triggered by environmental stimuli. Ultimately, this memristive circuit is intended for integration into the emotion module of interactive robots, providing a reference for enhancing robots’ emotional responses to external stimuli. This work contributes to the development of robots capable of emotional expression and responsive interaction with humans.</div></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":"205 ","pages":"Article 156175"},"PeriodicalIF":3.2,"publicationDate":"2025-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145790140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}