1. A ultrawideband antenna with dual-band band-notch filters.
- Author
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Tsai, Lin ‐ Chuan
- Subjects
- *
ULTRA-wideband antennas , *MULTIFREQUENCY antennas , *PERMITTIVITY , *THICKNESS measurement , *PARAMETER estimation ,DESIGN & construction - Abstract
The heptagonal-shaped monopole antenna design for ultrawideband (UWB) applications is proposed. This antenna is designed on PCB FR4 substrate with relative permittivity ɛr = 4.4, loss tangent tan δ = 0.0245, and thickness h = 1.6 mm. The antenna consists of a radiated patch, a feed line, and a ground plane. With the different geometrical parameters, simulated and experimental results of the antenna are suitable for UWB operations. The bandwidth VSWR < 2 of the UWB antennas from measurement is ∼122.02% (2.63-10.86 GHz). To decrease the interference with the wireless local area networks (WLANs) at 5.2/5.8 GHz and worldwide interoperability for microwave access (WiMAX) at 3.5/5.5 GHz, two band-notched filters covering from 3.4 to 3.69 and 5.15 to 5.85 GHz was design. Two L-shaped slots on the patch and two slot-type split ring resonators (SRRs) on the ground plane were used to produce two band-notched frequency bands. The results for VSWR, far-field H- and E-plane radiation patterns and gain of the proposed antennas are presented and discussed. The radiation area of the design antenna is 26 × 16.38 mm2. The measured results show a good agreement with the simulated results. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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