In this paper, a miniaturized and broadband patter-reconfigurable antenna working at very high frequency (VHF) and ultra-high frequency (UHF) band is proposed. A dipole antenna element with a compact size, stable horizontal gain, a wide bandwidth, and an omnidirectional pattern is introduced firstly, which operates from 116 MHz to 505 MHz with a relative bandwidth of 108.55% and a size of 0.11λL× 0.33λL. An antenna array is constructed by combining four elements in a rotationally symmetrical manner. When one element is excited and other ports are terminated by matched loads, switchable directional beams are achieved. A 10:1 scaled model of the proposed antenna is fabricated and tested. Measured results show that the antenna element operates from 1.48 GHz to 4.86 GHz (a relative bandwidth of 106.62%) with a gain above -2 dBi. The proposed antenna array can achieve directional beams with a high front to back ratio (FBR) with gain value of 3-4 dBi within 2-4 GHz.

Haifan Li

Tingshuang Zheng

Yong Mao

Yongjin Zhou

The Applied Computational Electromagnetics Society Journal (ACES)

The ACES Journal is devoted to the exchange of information in computational electromagnetics, to the advancement of the state of the art, and to the promotion of related technical activities. A primary objective of the information exchange is the elimination of the need to "re-invent the wheel" to solve a previously solved computational problem in electrical engineering, physics, or related fields of study.

The ACES Journal welcomes original, previously unpublished papers, relating to applied computational electromagnetics. All papers are refereed.

A unique feature of ACES Journal is the publication of unsuccessful efforts in applied computational electromagnetics. Publication of such material provides a means to discuss problem areas in electromagnetic modeling. Manuscripts representing an unsuccessful application or negative result in computational electromagnetics is considered for publication only if a reasonable expectation of success (and a reasonable effort) are reflected.

The technical activities promoted by this publication include code validation, performance analysis, and input/output standardization; code or technique optimization and error minimization; innovations in solution technique or in data input/output; identification of new applications for electromagnetics modeling codes and techniques; integration of computational electromagnetics techniques with new computer architectures; and correlation of computational parameters with physical mechanisms.

The ACES Journal is dedicated to the exchange of information in the field of computational electromagnetics, the advancement of technology, and the promotion of related technical activities. Its primary objective is to eliminate the need to "re-invent the wheel" when solving previously resolved computational problems in electrical engineering, physics, or related fields.\n\nThe ACES Journal welcomes original, unpublished papers related to applied computational electromagnetics, and all submissions are peer-reviewed.\n\nA unique feature of the ACES Journal is its publication of unsuccessful efforts in applied computational electromagnetics. This allows for discussion of problem areas in electromagnetic modeling. Manuscripts representing unsuccessful applications or negative results in computational electromagnetics will only be considered for publication if they reflect a reasonable expectation of success and a reasonable effort.\n\nThe technical activities promoted by this journal include code validation, performance analysis, and input/output standardization; code or technique optimization and error minimization; innovations in solution techniques or data input/output; identification of new applications for electromagnetic modeling codes and techniques; integration of computational electromagnetics techniques with new computer architectures; and correlation of computational parameters with physical mechanisms.

ACES期刊致力于计算电磁学领域的信息交流，推动技术的进步，并促进相关技术活动的发展。其主要目标是消除在电气工程、物理学或相关研究领域中，重复解决已解决的计算问题的必要性。\n\nACES期刊欢迎与应用计算电磁学相关的原创、未发表的论文，所有论文均经过审稿。\n\nACES期刊的一个独特之处在于，它还发表在应用计算电磁学中未成功的努力。这类材料的发表为讨论电磁建模中的问题领域提供了一个平台。只有在反映出合理的成功预期（和合理的努力）的情况下，代表计算电磁学中未成功应用或负面结果的手稿才会被考虑发表。\n\n本刊促进的技术活动包括代码验证、性能分析和输入/输出标准化；代码或技术优化和误差最小化；解决方案技术或数据输入/输出的创新；识别电磁建模代码和技术的新应用；将计算电磁技术与新计算机架构集成；以及将计算参数与物理机制进行关联。

Category	Quartile
计算机科学	4
计算机科学, 工程电子与电气	4
计算机科学, 电信学	4

A Miniaturized Pattern-reconfigurable Antenna for Broadband VHF and UHF Communications

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