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Chin. Phys. B, 2013, Vol. 22(4): 048401    DOI: 10.1088/1674-1056/22/4/048401

Wideband dipole antenna with inter-digital capacitor

Xiong Han, Hong Jin-Song, Jin Da-Lin
Institute of Applied Physics, University of Electronic Science and Technology of China, Chengdu 610054, China
Abstract  A dipole antenna with wideband characteristics is presented. The proposed antenna consists of a dipole with periodic capacitive loading and a pair of coplanar striplines (CPSs) as an impedance transformer. By adding interlaced coupling lines at each section, periodic capacitive loading is realized. The periodic interlaced coupling lines divide each arm of the dipole into five sections, and currents are distributed on different sections at different frequencies, which is useful to achieve a wide impedance bandwidth. By parametric study using HFSS, the optimized parameters of this dipole antenna are obtained. In order to validate the simulation results, a prototype of the proposed dipole antenna is fabricated and tested. The results show that the proposed antenna can achieve a gain of 3.1 dB-5.1 dB and bandwidth of 51% for |S11|< -10 dB over the band of 3.9 GHz-6.6 GHz, indicating its good radiation performance and radiation efficiency.
Keywords:  dipole antenna      wideband antenna      inter digital capacitor     
Received:  02 June 2012      Published:  01 March 2013
PACS:  84.40.Ba (Antennas: theory, components and accessories)  
  84.32.Tt (Capacitors)  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61172115 and 60872029), the High-Tech Research and Development Program of China (Grant No. 2008AA01Z206), and the Aeronautics Foundation of China (Grant No. 20100180003).
Corresponding Authors:  Xiong Han     E-mail:

Cite this article: 

Xiong Han, Hong Jin-Song, Jin Da-Lin Wideband dipole antenna with inter-digital capacitor 2013 Chin. Phys. B 22 048401

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