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2024-03-18
Design of a Monopole Antenna for WiFi -UWB Based on Characteristic Mode Theory
By
Progress In Electromagnetics Research M, Vol. 125, 107-116, 2024
Abstract
In this paper, a WiFi-UWB multiband monopole antenna is designed, fabricated, and tested based on the characteristic mode theory, which mainly consists of an L-shaped metal, an ``ok''-shaped metal radiator, and a T-shaped metal patch. The substrate dimensions are 40×43×1.6 mm3, featuring a rectangular ground plate at the substrate's bottom. The ``ok''-shaped metal on the upper surface is composed of a metal ring and a curved finger-shaped metal. To improve impedance matching and broaden the bandwidth, strategic modifications are implemented. Specifically, a rectangular slot is introduced at the top of the L-shaped metal, and the T-shaped metal is rotated 90° counterclockwise and positioned beneath the ``ok''-shaped metal. The microstrip feed line, constructed from metal, incorporates a feed point. Simulation results indicate that the antenna effectively covers the frequency ranges of 2.30-2.50 GHz and 3.65-9.77 GHz. At the resonance point, the maximum return loss is below -40 dB, signifying superior directional radiation characteristics. The antenna design is characterized by a wide frequency band, simple structure, and holds significant practical value for multi-frequency communication.
Citation
Zhong-Gen Wang, Rui You, Ming Yang, Jinzhi Zhou, and Mingqing Wang, "Design of a Monopole Antenna for WiFi -UWB Based on Characteristic Mode Theory," Progress In Electromagnetics Research M, Vol. 125, 107-116, 2024.
doi:10.2528/PIERM24012611
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