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采用 3D 打印和数控铣削技术制造的紧凑型宽带槽隙波导带通滤波器。

Compact Wideband Groove Gap Waveguide Bandpass Filters Manufactured with 3D Printing and CNC Milling Techniques.

机构信息

Department of Information and Communications Technology, Universidad Politécnica de Cartagena, Plaza del Hospital no. 1, 30202 Cartagena, Spain.

Department of Electronics and Computer Engineering, Universidad Politécnica de Cartagena, Plaza del Hospital no. 1, 30202 Cartagena, Spain.

出版信息

Sensors (Basel). 2023 Jul 7;23(13):6234. doi: 10.3390/s23136234.

DOI:10.3390/s23136234
PMID:37448083
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10347227/
Abstract

This paper presents for the first time a compact wideband bandpass filter in groove gap waveguide (GGW) technology. The structure is obtained by including metallic pins along the central part of the GGW bottom plate according to an -order Chebyshev stepped impedance synthesis method. The bandpass response is achieved by combining the high-pass characteristic of the GGW and the low-pass behavior of the metallic pins, which act as impedance inverters. This simple structure together with the rigorous design technique allows for a reduction in the manufacturing complexity for the realization of high-performance filters. These capabilities are verified by designing a fifth-order GGW Chebyshev bandpass filter with a bandwidth = 3.7 GHz and return loss = 20 dB in the frequency range of the WR-75 standard, and by implementing it using computer numerical control (CNC) machining and three-dimensional (3D) printing techniques. Three prototypes have been manufactured: one using a computer numerical control (CNC) milling machine and two others by means of a stereolithography-based 3D printer and a photopolymer resin. One of the two resin-based prototypes has been metallized from a silver vacuum thermal evaporation deposition technique, while for the other a spray coating system has been used. The three prototypes have shown a good agreement between the measured and simulated -parameters, with insertion losses better than = 1.2 dB. Reduced size and high-performance frequency responses with respect to other GGW bandpass filters were obtained. These wideband GGW filter prototypes could have a great potential for future emerging satellite communications systems.

摘要

本文首次提出了一种在槽隙波导（GGW）技术中的紧凑型宽带带通滤波器。该结构是通过根据一阶切比雪夫阶梯阻抗综合方法在 GGW 底板的中心部分包含金属销来获得的。带通响应是通过结合 GGW 的高通特性和金属销的低通行为来实现的，金属销作为阻抗变换器。这种简单的结构以及严格的设计技术允许降低制造复杂性，从而实现高性能滤波器。通过设计一个带宽为 3.7 GHz 的五阶 GGW 切比雪夫带通滤波器，并且在 WR-75 标准的频率范围内回波损耗为 20 dB，验证了这些功能，该滤波器使用计算机数控（CNC）加工和三维（3D）打印技术来实现。制造了三个原型：一个使用计算机数控（CNC）铣床，另外两个使用基于立体光刻的 3D 打印机和光聚合物树脂。其中一个基于树脂的原型通过银真空热蒸发沉积技术进行了金属化，而另一个则使用了喷涂系统。三个原型之间的测量和模拟 - 参数之间具有很好的一致性，插入损耗优于 1.2 dB。与其他 GGW 带通滤波器相比，获得了尺寸更小和高性能的频率响应。这些宽带 GGW 滤波器原型在未来新兴的卫星通信系统中可能具有很大的潜力。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72ea/10347227/eed301d774bb/sensors-23-06234-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72ea/10347227/cb40d13b7103/sensors-23-06234-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72ea/10347227/0f52e802ffd0/sensors-23-06234-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72ea/10347227/68219bcc3c35/sensors-23-06234-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72ea/10347227/82564961e66d/sensors-23-06234-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72ea/10347227/0494825fc278/sensors-23-06234-g005a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72ea/10347227/1672ecc8fca1/sensors-23-06234-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72ea/10347227/a5da6f7f5826/sensors-23-06234-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72ea/10347227/f2214d4b2299/sensors-23-06234-g008a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72ea/10347227/0bad8a3dc121/sensors-23-06234-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72ea/10347227/c0814c1468a8/sensors-23-06234-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72ea/10347227/961b3be4569e/sensors-23-06234-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72ea/10347227/8e6530a81288/sensors-23-06234-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72ea/10347227/eed301d774bb/sensors-23-06234-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72ea/10347227/cb40d13b7103/sensors-23-06234-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72ea/10347227/0f52e802ffd0/sensors-23-06234-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72ea/10347227/68219bcc3c35/sensors-23-06234-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72ea/10347227/82564961e66d/sensors-23-06234-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72ea/10347227/0494825fc278/sensors-23-06234-g005a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72ea/10347227/1672ecc8fca1/sensors-23-06234-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72ea/10347227/a5da6f7f5826/sensors-23-06234-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72ea/10347227/f2214d4b2299/sensors-23-06234-g008a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72ea/10347227/0bad8a3dc121/sensors-23-06234-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72ea/10347227/c0814c1468a8/sensors-23-06234-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72ea/10347227/961b3be4569e/sensors-23-06234-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72ea/10347227/8e6530a81288/sensors-23-06234-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/72ea/10347227/eed301d774bb/sensors-23-06234-g013.jpg

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Inverted Microstrip Gap Waveguide Filtering Antenna Based on Coplanar EBG Resonators.
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Sensors (Basel). 2022 Dec 27;23(1):282. doi: 10.3390/s23010282.
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Sensors (Basel). 2022 Dec 13;22(24):9760. doi: 10.3390/s22249760.
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Multimode HMSIW-Based Bandpass Filter with Improved Selectivity for Fifth-Generation (5G) RF Front-Ends.用于第五代（5G）射频前端的具有改进选择性的多模介质谐振器集成波导带通滤波器。
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