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A Design of Dual-band Stacked Helix Monopole Antenna with Parasitic Patch  

Jung, Jin-Woo (Department of Electronics Engineering, Chonnam National University)
Kim, Kyoung-Keun (Department of Electronics Engineering, Chonnam National University)
Lee, Hyeon-Jin (Department of Electronics and Information, Dongkang College)
Lim, Yeong-Seog (Department of Electronics Engineering, Chonnam National University)
Publication Information
Abstract
This paper presents the design simulation, implementation, and measurement of a miniaturized PCS / Satellite DMB dual-band stacked mompole antenna with a parasitic patch for mobile communication terminals. A stacked helix is realized by using a via hole with height of 0.4 mm and a diameter of 0.35 mm to connect upper- and lower-layer helix sections for a reduction of the dimensions of the antenna. In addition the stacked helix chip antenna is interleaved with a parasitic patch to achieve two different radiation modes. The ratio of the first frequency and the second frequency vary with the geometrical parameter of the parasitic patch. The fabricated antenna uses FR-4 substrate with a relative permittivity of 4.2. Its dimensions are $15.5{\times}7.6{\times}0.4 mm^3$. The measured impedance bandwidths (VSWR<2) are 240 and 250 MHz at the operating frequencies, respectively.
Keywords
Stacked; Helix; Parasitic Patch; Dual-band; Monopole Antenna;
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