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两级方形切割矩形多频段微带分形天线的设计与性能

Design and performance of two stages square cut rectangular multiband microstrip fractal antenna.

作者信息

Kadam Sudhir, Desai Kamalakar Ravindra, Kadam Payal, Pawar Aarti Prasad, Pawar Sonali, Nigade Prof Anuradha

机构信息

Bharati Vidyapeeth (Deemed to be University) College of Engineering, Pune, India.

Bharati Vidyapeeth's College of Engineering, Kolhapur, India.

出版信息

MethodsX. 2025 Aug 8;15:103559. doi: 10.1016/j.mex.2025.103559. eCollection 2025 Dec.

DOI:10.1016/j.mex.2025.103559
PMID:40896719
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12391773/
Abstract

Modern wireless systems require compact, low-profile, and multiband antennas. The designs offer high performance without structural complications. The classic, traditional single-band antenna mostly does not fit the bandwidth of applications. This study represented the challenges by introducing a two-stage square-cut fractal microstrip antenna design. This antenna integrated the two fractal geometries with one feed line and used periodical edge etching along with internal slotting to increase the electrical length and improve radiation efficiency without enlarging the size of the antenna. Through FEM-based simulation, the antenna dual-band characteristics for S-band (2.4263-3.2018 GHz) and C-band (5.3789-7.2308 GHz), giving a total bandwidth of approximately 3.7 GHz. The gain value remains stable about 6 dB in the S-band and 7.5 dB in the C-band, while return loss stays below -10 dB and VSWR under 2. These results offer a scalable platform for further research in reconfigurable and flexible antenna systems.•The antenna is beneficial for 2.4263-3.2018 GHz bandwidth of approximately 1.53 GHz and 5.3789-7.2308 GHz bandwidth of approximately 1.53 GHz respectively with minimal power reflection within bands.•Smith chart maintained at less than 51Ω. A few deviations occurred due to manual errors duringfabrication, soldering and testing antenna.

摘要

现代无线系统需要紧凑、低剖面和多频段天线。这些设计在没有结构复杂性的情况下提供高性能。经典的传统单频段天线大多不适合应用的带宽。本研究通过引入一种两级方切分形微带天线设计来应对这些挑战。该天线将两种分形几何结构与一条馈线集成在一起，并采用周期性边缘蚀刻和内部开槽来增加电长度并提高辐射效率，而不增大天线尺寸。通过基于有限元法的仿真，该天线在S频段（2.4263 - 3.2018 GHz）和C频段（5.3789 - 7.2308 GHz）具有双频段特性，总带宽约为3.7 GHz。在S频段增益值保持稳定在约6 dB，在C频段为7.5 dB，同时回波损耗保持在 - 10 dB以下，电压驻波比在2以下。这些结果为可重构和灵活天线系统的进一步研究提供了一个可扩展的平台。

•该天线分别在2.4263 - 3.2018 GHz带宽约为1.53 GHz和5.3789 - 7.2308 GHz带宽约为1.53 GHz时具有最小的带内功率反射。

•史密斯圆图保持在小于51Ω。在天线制造、焊接和测试过程中由于人为误差出现了一些偏差。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bdd/12391773/525be3822a73/gr10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bdd/12391773/248e3500e3be/ga1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bdd/12391773/2674378de0fa/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bdd/12391773/40934e3e5149/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bdd/12391773/5c9227f94ee5/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bdd/12391773/cab8f4dcb024/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bdd/12391773/a7d34ee0e208/gr5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bdd/12391773/ec7ab3a9a710/gr6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bdd/12391773/2544ecb86f9b/gr7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bdd/12391773/20b1633a5983/gr8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bdd/12391773/57667d24a452/gr9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bdd/12391773/525be3822a73/gr10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bdd/12391773/248e3500e3be/ga1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bdd/12391773/2674378de0fa/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bdd/12391773/40934e3e5149/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bdd/12391773/5c9227f94ee5/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bdd/12391773/cab8f4dcb024/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bdd/12391773/a7d34ee0e208/gr5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bdd/12391773/ec7ab3a9a710/gr6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bdd/12391773/2544ecb86f9b/gr7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bdd/12391773/20b1633a5983/gr8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bdd/12391773/57667d24a452/gr9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bdd/12391773/525be3822a73/gr10.jpg

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