检索结果-内蒙古大学图书馆

12th IEEE Asia-Pacific Conference on Antennas and Propagation, APCAP 2024

作者： Zhang, Hongwen Wang, Wenlei Jin, Huayan Luo, Guo Qing Hangzhou Dianzi University Key Laboratory of Rf Circuits & System Ministry of Education HangZhou310018 China

ISBN: (纸本)9798350351019

In this paper, a rectangular waveguide to substrate integrated waveguide (RWG-to-SIW) transition structure with extra bandpass filter-like response is proposed and employed for filtering horn antenna design. The transition structure consists of a SIW cavity loaded with a slotted patch and a filtering T-shaped SIW. The SIW cavity is used as waveform transformer to excite the stepped waveguide horn. The slot in the patch can introduce a transmission zero at the right of the passband. The terminal of the filtering T-shaped SIW operating in half-TE 110 mode is designed to generate the desired transmission zero at the left of the passband. The simulated results show that the proposed lowprofile filtering horn antenna can realize a high peak gain of 11.7 dBi, a wide - 10 - dB impedance bandwidths of 9.45% from 27.4 to 30.1 GHz, and good bandpass filtering response. © 2024 IEEE.

关键词： Horn antennas

来源：评论

学校读者我要写书评

暂无评论

Broadband Planar End-Fire Circularly Polarized Antenna for K-Band 12

Broadband Planar End-Fire Circularly Polarized Antenna for K...

引用

12th IEEE Asia-Pacific Conference on Antennas and Propagation, APCAP 2024

作者： Wu, Jincan Zhou, Chen Jin, Huayan Wang, Wenlei Cao, Wenhui Luo, Guo Qing Hangzhou Dianzi University The Key Laboratory of Rf Circuits & System Ministry of Education Xiasha High Education Park Hangzhou310018 China

ISBN: (纸本)9798350351019

A K-band planar end-fire circularly polarized (CP) complementary antenna with broadband capabilities is proposed in is paper. A multi-mode substrate integrated waveguide (SIW) cavity, with one side open for aperture radiation, is utilized as a multi-mode resonant magnetic dipole to provide x-axis polarization component. A printed electric dipole, which provides y-axis polarization component, is connected to the aperture by a phase extension line that introduces a 90° phase difference between the two orthogonal polarization components. This configuration enables CP performance. Simulation results indicate that the proposed antenna achieves a bandwidth of 11.94% (18.73-21.11 GHz) with |S11 | © 2024 IEEE.

关键词： Microwave antennas

来源：评论

学校读者我要写书评

暂无评论

Low-Profile Independent Dual Linear Polarization Reflectarray Filtenna

引用

IEEE Antennas and Wireless Propagation Letters 2025年第6期24卷 1372-1376页

作者： Yu, Weiliang Tong, Shijun Wang, Wenlei Dai, Xiwang Liu, Leilei Luo, Guo Qing Hangzhou Dianzi University Xiasha High Education Park Key Laboratory of RF Circuits & System Ministry of Education School of Electronics and Information Hangzhou310018 China Nanjing University of Posts and Telecommunications National and Local Joint Engineering Laboratory of RF Integration College of Electronic and Optical Engineering Nanjing210003 China

This paper proposes a low-profile dual-linear polarization reflectarray filtenna with a unit cell featuring a dual-polarization magneto-electric (ME) dipole based on split-ring resonators (SRRs). The ME dipole has two independent feeding sections, each connected to a separate open-ended microstrip line, enabling independent control of dual-polarization reflection phases. The ME dipole and SRRs generate low and high frequency radiation nulls, respectively. The filtenna achieves 3dB gain bandwidths of 19.3% for x-polarization and 18.5% for y-polarization, with maximum gains of 21.77dBi (35.1% efficiency) for x-polarization and 21.93dBi (36.4% efficiency) for y-polarization. The selectivity characteristics for x- and y-polarizations are 0.5 and 0.52, respectively. With a relative thickness of only 0.072λ, this filtenna is suitable for long-distance communication systems requiring high-capacity data transmission and integration. © 2002-2011 IEEE.

关键词： Reflection

来源：评论

学校读者我要写书评

暂无评论

Phase retrieval network for multi-functional holography based on self-supervised learning

Phase retrieval network for multi-functional holography base...

引用

2023 Advanced Fiber Laser Conference, AFL 2023

作者： Xie, Jialei Jin, Lei Key Laboratory of RF Circuits and System of Ministry of Education School of Electronics and Information Hangzhou Dianzi University Xiasha High Education Park Hangzhou310018 China

ISBN: (纸本)9781510677661

Phase-only hologram reconstructs desired field distribution by modulating the phase of incident light, which is an important method for realizing full-color or 3-dimensional (3D) display. Under a given condition, traditional iterative algorithms or data-driven neural networks are employed to retrieve the phase profiles of full-color or 3D holograms. However, traditional iterative algorithms are required to repeat the optimization process for different target images, while the performance of data-driven neural network is limited by the training dataset. In this work, we propose a phase retrieval network for multi-functional holography based on self-supervised learning. The proposed method based on physics inspired network is formed by image preprocessing, deep neural network (DNN), and diffraction propagation. After self-supervised training, the proposed network retrieves the phase profile by inputting the target images, working wavelengths, and image distances. Compared with traditional iterative algorithms, the proposed network accelerates the phase retrieval process, suppresses the sparkle noise and improves the quality of reconstructed images. This proposed method has a great potential to realize real time 3D full-color display. © COPYRIGHT SPIE.

关键词： Holograms

来源：评论

学校读者我要写书评

暂无评论

Inverse Design of Dielectric Resonator Based on the Multipole Analysis

Inverse Design of Dielectric Resonator Based on the Multipol...

引用

2023 International Applied Computational Electromagnetics Society Symposium, ACES-China 2023

作者： He, Yu Liao, Zhen Jin, Lei Hangzhou Dianzi University School of Electronics and Information Key Laboratory of Rf Circuits & System of Ministry of Education Hangzhou China

ISBN: (纸本)9781733509657

Based on the physics-inspired neural network, forward prediction and inverse design approaches are proposed to optimize dielectric nano-brick. The Cartesian multipole analysis and Lorentz model are used to extract the feature parameters of the scattering spectrum of a resonance mode. The proposed forward predicting approach predicts the feature parameters of the scattering spectrum in the whole visible region. The proposed inverse design approach achieves the optimized geometries of dielectric nano-brick by inputting the feature parameters of desired scattering spectrum. The proposed approaches have the potential to accelerate the inverse design process of dielectric resonator. © 2023 Applied Computational Electromagnetics Society (ACES).

关键词： Dielectric resonators

来源：评论

学校读者我要写书评

暂无评论

Inverse Design of Metal-Insulator-Metal Metasurface Based on Equivalent Circuit Model

Inverse Design of Metal-Insulator-Metal Metasurface Based on...

引用

2023 International Applied Computational Electromagnetics Society Symposium, ACES-China 2023

作者： Yan, Qiankai Jin, Lei Luo, Guoqing Hangzhou Dianzi University School of Electronics and Information Key Laboratory of Rf Circuits and System of Ministry of Education Hangzhou China

ISBN: (纸本)9781733509657

Metasurfaces formed of two-dimensional array of tailored meta-atoms has the capability to control the transmission and reflection electromagnetic waves in subwavelength scale. The flexibility in designing meta-atom makes the design process involve iterative full wave simulation, which is time-consuming and labor-intensive. To accelerate the design process, this paper proposes a method based on an equivalent circuit model and deep learning network to predict the forward response and perform inverse design of metal-insulator-metal (MIM) metasurfaces. We introduce an equivalent circuit modeling approach to analysis the response of MIM metasurfaces. The equivalent circuit model combines with deep learning networks to predict the optical response of metasurfaces and perform inverse design of the structural geometric parameters for desired responses. By comparing the prediction results with full-wave simulation results, we demonstrate that the proposed model achieves high prediction accuracy. © 2023 Applied Computational Electromagnetics Society (ACES).

关键词： Deep learning

来源：评论

学校读者我要写书评

暂无评论

A K/Ka-Band Diplex Circularly Polarized Horn Antenna with High Isolation 5

A K/Ka-Band Diplex Circularly Polarized Horn Antenna with Hi...

引用

5th IEEE International Conference on Electronic Information and Communication Technology, ICEICT 2022

作者： He, Ping Fan, Kuikui Luo, Guoqing Hangzhou Dianzi University Ministry of Education the Key Laboratory of Rf Circuits and System Zhejiang Hangzhou China

ISBN: (数字)9781665472111

ISBN: (纸本)9781665472111

In this paper, a K/Ka-band diplex circularly polarized horn antenna with high isolation is proposed for satellite communication systems. The proposed antenna is composed of a metal waveguide diplexer and a septum circular polarizer. The metal waveguide diplexer will provide dual channels with high isolation characteristics, while the septum circular polarizer is capable of transmitting and receiving two orthogonal circularly polarized signals simultaneously. The simulated results show that the proposed antenna achieves a reflection coefficient of less than -10 dB, an isolation of less than -68 dB, and an axial ratio lower than 3dBat the frequency band of 18.5-21.5 GHz and 27-32 GHz, respectively. The good performances make the proposed antenna a good candidate for the satellite communication system. © 2022 IEEE.

关键词： Satellite communication systems

来源：评论

学校读者我要写书评

暂无评论

A Compact Multi-layer Structure Based on Spiral Spoof Surface Plasmon Polaritons with High Efficiency of High-order Modes

A Compact Multi-layer Structure Based on Spiral Spoof Surfac...

引用

2023 International Applied Computational Electromagnetics Society Symposium, ACES-China 2023

作者： Wan, Haoyu Pan, Baicao School of Electronics and Information Hangzhou Dianzi University Key Laboratory of Rf Circuits and System Ministry of Education Hangzhou China Southeast University State Key Laboratory of Millimeter Waves Nanjing China

ISBN: (纸本)9781733509657

A compact multi-layer structure based on spiral spoof surface plasmon polaritons (SSPPs) is presented, which achieved extreme miniaturization and high-efficient propagation of high-order modes of SSPPs. The cut-off frequencies of the fundamental mode and the first high-order mode are 1.9 GHz and 5.7 GHz, respectively. The lateral size reduction is 87% compared with the conventional structures with the same cut-off frequency. Both modes can be used for transmission lines. No asymptotic transition part is needed. Due to the surface wave characteristics, the proposed component can also be used as a permittivity sensor from 2.5 GHz to 5.5 GHz. © 2023 Applied Computational Electromagnetics Society (ACES).

关键词： Surface waves

来源：评论

学校读者我要写书评

暂无评论

Wideband Ka-band printed dipole array antenna with parasitic trapezoidal patch

引用

Journal of Electromagnetic Waves and Applications 2024年第4期38卷 538-555页

作者： Li, Chung-Yi Liao, Yi-Jyun Li, Eric S. Liao, Chao-Hsiang Jin, Huayan Chen, Yi-Da Chin, Kuo-Sheng Department of Electronics Engineering Chang Gung University Taoyuan City Taiwan Department of Electronic Engineering National Taipei University of Technology Taipei Taiwan Wireless Laboratory SGS Taiwan Ltd. New Taipei City Taiwan Key Laboratory of RF Circuits & System of Ministry of Education Hangzhou Dianzi University Xiasha High Education Park Hangzhou China

This work presents a printed Ka-band dipole array antenna with wide bandwidth for millimeter-wave communication applications. The operating band of the proposed antenna ranges from 27.8–38.2 GHz exhibiting a wide bandwidth of 10.4 GHz. A balun structure is designed with interlaced U-shaped bending lines on the upper and lower metal layers to feed the dipole differentially. Parasitic trapezoidal patches are exquisitely placed adjacent to the driven dipoles for coupling, which can enhance bandwidth significantly through multiple resonances. The low-frequency radiation is mainly contributed by the resonance of the dipole, while the high-frequency radiation is affected by both the dipole and the parasitic trapezoidal patch. Due to the trapezoidal patch, the equivalent path length of the resonant current becomes shorter, thus supporting high-frequency resonance. A prototype of the proposed 1 × 2 dipole array antenna was fabricated for validation. The measured –10-dB impedance bandwidth is up to 27.8∼38.2 GHz (or 31.5%) and the realized gain is as high as 8 dBi, which is suitable for advanced millimeter-wave communication applications. © 2024 Informa UK Limited, trading as Taylor & Francis Group.

关键词： Bandwidth

来源：评论

学校读者我要写书评

暂无评论

A Millimeter-Wave Dual-Polarized Filtering Patch Antenna Array Supported by High-Order SIW Cavity 5

A Millimeter-Wave Dual-Polarized Filtering Patch Antenna Arr...

引用

5th IEEE International Conference on Electronic Information and Communication Technology, ICEICT 2022

作者： Zhao, Weitao Wang, Wenlei Jin, Huayan Luo, Guo Qing Hangzhou Dianzi University Key Laboratory of Rf Circuits & System of Ministry of Education Xiasha High Education Park Hangzhou310018 China

ISBN: (数字)9781665472111

ISBN: (纸本)9781665472111

A millimeter-wave dual-polarized 2 × 2 filtering patch antenna array with high polarization isolation, low cross-polarization level, high selectivity, and compact size is proposed in this paper. A high-order substrate integrated waveguide (SIW) cavity with four inside metallic via walls is proposed to support a 2 × 2 patch array with in-phase radiation and simplified feeding structure. The differentially-fed method is used to obtain a high polarization isolation. Filtering slots around the patches and the SIW cavity filters combined in the feeding lines are employed to improve the filtering performance. Simulated results indicate that the proposed array realizes a wide -10 dB impedance bandwidth of 8.8% from 27.22 to 29.70 GHz, a low cross-polarization level of 47 dB, a high polarization isolation above 50 dB, a flat in-band gain variation from 13.4 to 14.1 dBi, and high out of band suppression levels of 29 and 21 dB in the lower and upper stopbands, respectively. © 2022 IEEE.

关键词： Substrate integrated waveguides

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：