As the growing demand for mobile communications constantly increases, the need for better coverage, improved capacity, and higher transmission quality rises. Thus, a more efficient use of the radio spectrum is required. Small antenna systems are capable of efficiently utilizing the radio spectrum and, thus, hold a promise for an effective solution to the present wireless systems' problems, while also achieving reliable and robust high-speed high-data-rate transmission. Although numerous studies for smart antennas have already been conducted using rectilinear arrays, including mostly uniform linear arrays (ULAs) and uniform rectangular arrays (URAs), not as much effort has been devoted to other configurations. In this paper, the performance of smart antennas with uniform circular arrays (UCAs) is examined. A profound justification for this selection is the symmetry possessed by uniform circular arrays. This property provides uniform circular arrays with a major advantage: the ability to scan a beam azimuthally through 360/spl deg/ with little change in either the beamwidth or the sidelobe level. With the use of uniform circular arrays, the two main issues related to smart antennas - estimation of the direction of arrival from incoming signals and bearnforming - are both examined.

P. Ioannides

C.A. Balanis

IEEE Antennas and Propagation Magazine

IEEE ANTENNAS AND PROPAGATION MAGAZINE 积极征集描述工业、政府和大学中发生的工程活动的专题文章。所有专题文章均需经过同行评审。重点在于为读者提供对特定主题或各种组织正在解决的技术挑战的一般理解，以及它们应对这些挑战的能力。欢迎发表新成果、评论、教程和历史文章的文章，以及描述优秀工程示例的文章。该杂志感兴趣的技术领域与IEEE天线和传播协会相同，包括以下：天线，包括分析、设计、开发、测量和测试；电磁波的辐射、传播以及与离散和连续介质的相互作用；与天线、传播和传感相关的应用和系统，例如应用光学、毫米波和亚毫米波技术、天线信号处理和控制、射电天文学以及地面和天基通信的传播和辐射方面，包括无线、移动、卫星和电信。

The IEEE Antennas and Propagation Magazine actively solicits topical articles that describe engineering activities occurring in industry, government, and academia. All articles undergo peer review. The focus is to provide readers with a general understanding of specific topics and the technical challenges various organizations are addressing, as well as their capabilities in tackling these challenges. Contributions of new results, reviews, tutorials, and historical articles are welcome, along with articles that describe exemplary engineering practices. The technical areas of interest align with those of the IEEE Antennas and Propagation Society, including: antennas, encompassing analysis, design, development, measurement, and testing; radiation and propagation of electromagnetic waves and their interactions with discrete and continuous media; applications and systems related to antennas, propagation, and sensing, such as applications of optics, millimeter-wave, and submillimeter-wave technologies, antenna signal processing and control, radio astronomy, and the propagation and radiation aspects of ground and space-based communications, including wireless, mobile, satellite, and telecommunications.

《IEEE Antennas and Propagation Magazine》积极征集关于工业、政府和大学中工程活动的专题文章，所有文章均需经过同行评审。该杂志旨在为读者提供对特定主题及各种组织所面临的技术挑战的全面理解，以及它们应对这些挑战的能力。欢迎发表新成果、评论、教程和历史文章，以及描述优秀工程示例的文章。该杂志关注的技术领域与IEEE天线和传播协会相同，包括：天线的分析、设计、开发、测量和测试；电磁波的辐射、传播及其与离散和连续介质的相互作用；与天线、传播和传感相关的应用和系统，例如光学、毫米波和亚毫米波技术的应用、天线信号处理与控制、射电天文学，以及地面和天基通信的传播和辐射，包括无线、移动、卫星和电信。

IEEE Antennas Propag. Mag.

Uniform circular arrays for smart antennas

The paper concentrates on the use of circular arrays for smart antennas and the necessity for implementing uniform circular arrays (UCAs) for adaptive antennas and several adaptive algorithms applicable to UCAs are mentioned.

Category	Quartile
计算机科学	4
计算机科学, 工程电子与电气	3
计算机科学, 电信学	4

Uniform circular arrays for smart antennas

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