Highly compact UWB printed monopole antennas with different ground plane structures (original) (raw)
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IET Microwaves, Antennas & Propagation, 2011
A new microstrip-fed planar monopole antenna is presented for ultra-wideband (UWB) communication systems. The antenna structure consists of a dome-topped, bowl-shaped patch with a truncated ground plane structure. The ground plane is predominately tapered and includes a notch below the feed-line in the vicinity of the patch. The effects of dimensional parameters on the performance of the antenna have been investigated through a parametric study. Current density distribution on the antenna was also computed to gain a better insight of its behaviour. The antenna performance is validated through measurement, including its radiation patterns. The measured impedance bandwidth of the proposed antenna for |S 11 | ≤ 2 10 dB is 10.35 GHz (2.65-13.0 GHz), constituting 132% impedance bandwidth. The fabricated antenna has a compact size of 18 × 20 × 1.6 mm 3 . Additional features that make the antenna a suitable candidate for UWB systems are its simple configuration, compactness and low fabrication cost.
A very compact CPW-FED ultra-wideband circular monopole antenna
Microwave and Optical Technology Letters, 2012
A very compact printed circular monopole antenna for ultra-wideband applications is presented. To achieve wide bandwidth performance, the proposed antenna is fed by a coplanar waveguide feedline. The total size of antenna is as small as 12 mm 22 mm  0.787 mm. The simulated and measured results demonstrate an impedance bandwidth covering 2.9-11.6 GHz for return loss less than À10 dB, which indicates that the proposed antenna performance is appropriate for UWB applications. V
Compact ultra-wideband printed monopole antenna
Electronics Letters, 2011
A compact printed monopole antenna for broadband application is presented. The proposed antenna, having a total physical size of 21 × 6.5 mm consists of a patch fed by a coaxial line and an SMA connector as partial finite ground plane. The modified patch plane with a slot in its feed point helps to increase the impedance bandwidth of the proposed antenna. The optimal design may offer an ultra-wide impedance bandwidth from 2.56 GHz to 20 GHz. A prototype is fabricated and tested. The agreement between the simulated and measured results is quite good. Index Terms ─ Compact printed monopole antenna and ultra-wideband.
Compact Planar Rectangular Monopole Patch Antenna for Ultra-wideband Application
A compact monopole microstrip rectangular patch antenna having defected ground plane(DGP) with notches is presented in this paper. Ultra-wide band (UWB) patch antenna is feed by microstrip line feed. Parametric study have been conducted by changing the gap distance between radiating patch and DGP and changing the feed position. Optimum results are observed when gap between the radiating patch and DGP is 0.5mm and for offset feeding of microstrip feed line. The obtained reflection coefficient is less than -10dB for a frequency range of 3GHz to 10.66 GHz. The antenna has been designed on a FR4 substrate with dielectric constant єr = 4.4, loss tangent (tan δ) = 0.02.The radiation pattern is directional in E-plane and nearly omnidirectional in H-plane. Efficiency decreases at the higher frequency edge due to the lossy substrate. The UWB antenna is simulated using CAD FEKO 6.2 suit electromagnetic simulator using MoM (Method of Moment).
Small modified monopole antenna for UWB application
IET Microwaves, Antennas & Propagation, 2009
In this paper, we present a novel modified printed monopole antenna (PMA) for ultra-wideband (UWB) applications. The proposed antenna consists of a truncated ground plane and radiating patch with two tapered steps, which provides wideband behaviour and relatively good matching. Moreover, the effects of a modified trapezoid-shaped slot inserted in the radiating patch, on the impedance matching and radiation behaviour is investigated. The antenna has a small area of 14 Â 20 mm 2 and offers an impedance bandwidth as high as 100% at a centre frequency of 7.45 GHz for S 11 , 210 dB, which has a frequency bandwidth increment of 18% with respect to the previous similar antenna. Simulated and experimental results obtained for this antenna show that it exhibits good radiation behaviour within the UWB frequency range.
A printed ellipse-shaped monopole antenna with coplanar waveguide feed for use in ultrawideband (UWB) communication systems is presented. In this proposed antenna, the impedance bandwidth increases with a pair of ellipse-shape-combined design on the patch and ground plane. The effect of the ground plane form on the optimization of the S 11 characteristics is discussed in detail. Proposed antenna operates in the adopted bandwidth (3.1-10.6 GHz) with S 11 < À10 dB and covers it very well from 2.4 to 20 GHz. Experimental and simulated antenna results show that the proposed antenna has a desirable S 11 level and radiation pattern characteristics for the UWB frequency band range. Figure 7 Comparison between measured and Simulated S 11 for the proposed antenna
U-Shaped Monopole Antenna for UWB Applications
A simple low cost and compact printed dual-band U-Shaped monopole antenna for ultra wide band applications is proposed. Dual-band operation covers two frequency bands in between 3.1-10.6GHz
Design of a new compact printed monopole antenna with Y-shaped slot for ultra-wideband applications
2014 9th International Conference on Intelligent Systems: Theories and Applications (SITA-14), 2014
In This paper, the design and analysis of a new compact printed antenna for UWB applications are presented. This antenna consists of a pentagon patch with Y-shaped slot and a partial ground plane with a periodic rectangular slot. The effect of various parameters on UWB characteristics has been analyzed by using 3D electromagnetic Simulator CST Microwave Studio and Momentum Software integrated into Advanced Design System. The final prototype of the proposed antenna operates from 2.7GHZ to 14.7GHz, corresponding to wide input impedance bandwidth (173.9%). The proposed antenna can be easily integrated with radio-frequency or microwave circuits with low cost manufacturing. Details of the proposed antenna design and simulated results are described and discussed.
Modified Planar Monopole Antenna for UWB Applications
Ijca Proceedings on International Conference on Communication Circuits and Systems 2012, 2013
In this proposed paper, a planar monopole antenna with modified patch and truncated ground plane for Ultra wideband (UWB) applications is presented. The radiating element of the proposed antenna is fed by a 50 Ω microstrip line. Truncation in the ground plane is made for better impedance matching. It is found that by making steps in the ground plane, return loss characteristics and hence the VSWR is improved. The antenna parameters and performances have been investigated by using commercially available CST Microwave Studio 2012 software. Simulation and measurement results show that the proposed antenna provides an ultra wide bandwidth, completely covering the range set by the Federal Communication Commision (FCC) for UWB operations (3.1 GHz to 10.6 GHz).The antenna is of low profile and exhibits omnidirectional radiation pattern and high gain for the entire bandwidth.
A PLANAR U TYPE MONOPOLE ANTENNA FOR UWB APPLICATIONS
—An ultra-wideband (UWB) U type monopole antenna fed by a coplanar waveguide (CPW) is proposed. It has low profile and very compact size (14.48 mm × 28.74 mm × 0.8 mm). It provides an wide impedance bandwidth ranging from 3.08 GHz to about 12.75 GHz adjustable by variation of its parameters, such as the relative permittivity and thickness of the substrate, width, and feed and ground plane dimensions. Parametric study is presented. Details of the proposed ultra-wideband design are described. Simulation results are presented and discussed in this paper.