volume | PIER Journals

2014-11-18

High Power 12-Element Triangular-Grid Rectangular Radial Line Helical Array Antenna

Xiang-Qiang Li,

Dr. Xiang-Qiang Li

School of Physical Science and Technology

Southwest Jiaotong University

China

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Qing-Xiang Liu,

Dr. Qing-Xiang Liu

School of Physical Science and Technology

Southwest Jiaotong University

China

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Jianqiong Zhang

Professor Jianqiong Zhang

School of Physical Science and Technology

Southwest Jiaotong University

China

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Progress In Electromagnetics Research C, Vol. 55, 17-24, 2014

doi:10.2528/PIERC14100402

Abstract

A 12-element triangular-grid rectangular radial line helical array antenna is proposed and investigated. The major characteristic of this antenna is that its radiation elements are arranged in triangular-grid, which is helpful to reducing the number of elements demanded for a certain antenna aperture and grating lobe suppression capacity. The radiation element is optimized to facilitate the manufacture. The feed system with six different groups of output ports is designed to obtain equal-amplitude output using three kinds of probes. An antenna prototype with the center frequency of 2.856 GHz is simulated and measured. In the range of 2.75-2.95 GHz, the experimental result shows an antenna VSWR below 1.2, an antenna gain over 16.3 dB, and an aperture efficiency more than 80%. The field distributions of this antenna are analyzed through simulation, which prove its advantage of high power-handling capacity. Its ability to be used as a sub-array is also demonstrated by forming a 48-element array antenna.

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Xiang-Qiang Li, Qing-Xiang Liu, and Jianqiong Zhang, "High Power 12-Element Triangular-Grid Rectangular Radial Line Helical Array Antenna," Progress In Electromagnetics Research C, Vol. 55, 17-24, 2014.
doi:10.2528/PIERC14100402

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