Compact coplanar waveguide (CPW)-fed resonant antennas for dual-frequency operation using epsilon negative transmission line

2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference Pub Date : 2013-07-21 DOI:10.1109/CSQRWC.2013.6657387

Huang Yajun, Zhang Xuchun, Zheng Long, Zhou Chao

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Abstract

This paper presents the design and analysis of compact coplanar waveguide (CPW)-fed dual-frequency resonant antenna. It can be analyzed and designed on the concept of the epsilon negative (ENG) meta-structured transmission line (MTL) and on a CPW single layer where vias are not required. The resonant phenomenon is employed to reduce the antenna size. To design and analyze the proposed antenna, the circuit simulation of the ENG MTL unit resonator is executed by the equivalent circuit and the results are compared with those of full wave simulation and experiment. The results show that the presented antenna has such a reasonable radiation characteristics of bandwidth and size which are verified by commercial EM simulation software HFSS11 and is suitable for compact dual-frequency antenna. Then the antenna is fabricated and measured. The realized antenna has a compact size of 22 mm×26.6 mm . Experimental results show that the proposed antenna can operate at 2.5 (2.485 to 2.515) GHz and 4.20 (4.075 to 4.327)GHz bands. Good agreement between the simulated and measured results is obtained.

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采用epsilon负传输线的紧凑共面波导(CPW)馈电双频谐振天线

本文介绍了紧凑共面波导馈电双频谐振天线的设计与分析。它可以根据epsilon负(ENG)元结构传输线(MTL)的概念和不需要过孔的CPW单层进行分析和设计。利用谐振现象减小天线尺寸。为了设计和分析所提出的天线，利用等效电路对ENG MTL单元谐振器进行了电路仿真，并与全波仿真和实验结果进行了比较。结果表明，该天线具有合理的带宽和尺寸辐射特性，并通过商用电磁仿真软件HFSS11进行了验证，适用于小型双频天线。然后对天线进行制作和测量。所实现的天线尺寸紧凑，为22 mm×26.6 mm。实验结果表明，该天线可以工作在2.5 (2.485 ~ 2.515)GHz和4.20 (4.075 ~ 4.327)GHz频段。仿真结果与实测结果吻合较好。

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2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference

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