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2014-06-21
Design of a Miniaturized Zeroth- and First-Order Resonant Antenna with Mushroom Cells and Interdigital Capacitors
By
Progress In Electromagnetics Research Letters, Vol. 47, 1-5, 2014
Abstract
A novel design of miniaturized dual-bandantenna based on mushroom cell and interdigital capacitor is presented in this paper. Four transmission line (TL) elements are loaded in a microstrip antenna, and each one is composed ofamushroom cell and interdigital capacitors. The interdigital capacitors contribute to the series capacitance and metallicvia-hole of mushroom structuresresult in the shunt inductance in the equivalent circuit model. The antenna works as a zeroth-order (f0= 2.51 GHz) and first-order (f1 = 3.78 GHz) resonant antenna with varied radiation patterns. Omnidirectionalradiation pattern and unidirectional radiation pattern are obtained at 2.51 GHz and 3.78 GHz, respectively.The overall size of the antenna is only 0.25×0.25×0.017λ03 (at f0= 2.51 GHz). The proposed antenna features compact structure, low profile and easy fabrication. Good agreement between the simulated and measured results is also achieved, validating our design concept.
Citation
Ke Li, Yuan-Ming Cai, Long Li, and Chang-Hong Liang, "Design of a Miniaturized Zeroth- and First-Order Resonant Antenna with Mushroom Cells and Interdigital Capacitors," Progress In Electromagnetics Research Letters, Vol. 47, 1-5, 2014.
doi:10.2528/PIERL14050802
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