Optimal Antenna Currents for Q, Superdirectivity, and Radiation Patterns Using Convex Optimization

被引：105

作者：

Gustafsson, Mats ^{[1
]}

Nordebo, Sven ^{[2
]}

机构：

[1] Lund Univ, Elect & Informat Technol Dept, SE-22100 Lund, Sweden

[2] Linnaeus Univ, Sch Comp Sci Phys & Math, Vaxjo, Sweden

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2013年 / 61卷 / 03期

基金：

瑞典研究理事会;

关键词：

Antenna Q; antenna theory; convex optimization; physical limitations; small antennas; superdirectivity; PHYSICAL LIMITATIONS; LOWER BOUNDS; Q-LIMITS; IMPEDANCE;

D O I：

10.1109/TAP.2012.2227656

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The high Q-factor (low bandwidth) and low efficiency make the design of small antennas challenging. Here, convex optimization is used to determine current distributions that provide upper bounds on the antenna performance. Optimization formulations for maximal gain Q-factor quotient, minimal Q-factor for superdirectivity, and minimum Q for given far-fields are presented. The effects of antennas embedded in structures are also discussed. The results are illustrated for planar geometries.

引用

页码：1109 / 1118

页数：10

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