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Proceedings ArticleDOI

Different techniques for creating notches in a planar monopole UWB antenna

01 Dec 2015-pp 1-5
TL;DR: In this paper, a compact printed monopole UWB antenna is presented, followed by various techniques for creating stop bands in order to mitigate interference between co-existing UWB systems.
Abstract: In this paper, a compact printed monopole UWB antenna is presented, followed by various techniques for creating stop bands in order to mitigate interference between co-existing UWB systems. The antenna consists of a two-step beveled radiating patch and a reduced ground plane which accounts for good impedance matching from 3.1 GHz to 10.6 GHz. A wide bandwidth of 8.7 GHz is obtained between 3.5 GHz to 12.2 GHz. A comparative analysis is presented by etching out slots of various shapes near the feed line in order to effectively reject WLAN frequencies (5.15–5.35/5.725–5.8825 GHz). All the analysis for the proposed antenna is done in HFSS 2014.
References
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Journal ArticleDOI
TL;DR: In this article, a band-notched planar monopole ultrawideband (UWB) antenna with an open-looped resonator and two tapped lines is proposed.
Abstract: A novel band-notched planar monopole ultrawideband (UWB) antenna is proposed. A notched band, located in the 5 GHz WLAN band, is created using a resonator at the center of a fork-shaped antenna. The resonator is composed of an open-looped resonator and two tapped lines. With the open-looped resonator, the antenna has a good band-notched performance and bandstop-filter-like response in the target band. A parametric study of the notched bandwidth is described that explored the antenna operating mechanism. Then, an equivalent circuit model illustrates the band-notched behaviors more clearly. The antenna input admittance calculated with the equivalent circuit model reasonably agrees with the HFSS simulated result. The proposed antenna also features flat gain frequency responses, small varied group delay and 15 to 35 dB gain suppression at the notched band. Accordingly, the band-notched antenna can effectively select target bands by adjusting these antenna parameters.

85 citations


"Different techniques for creating n..." refers background in this paper

  • ...Band rejection of UWB antennas can be achieved by incorporating small strip bar [7-9], an openloop resonator [10], U-shaped slots [11], etching out a Ωshaped slot [12] and a pentagonal radiating patch with two bent slots [13]....

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Journal ArticleDOI
TL;DR: In this article, a new CPW-fed quasi-circular monopole antenna is presented, which is composed of a triangle and its tangent circle, and is suitable for various military and commercial wideband applications.
Abstract: Presented is a new CPW-fed quasi-circular monopole antenna, which is composed of a triangle and its tangent circle. This smooth monopole structure reduces the dimensions and improves impedance bandwidth dramatically. The CPW ground is bevelled to form a 50 to 100 Omega impedance transformer. The measured bandwidth defined by VSWR<2 is from 2.55 to 18.5 GHz, i.e. a ratio of about 7.3:1. The proposed monopole exhibits a nearly omnidirectional radiation pattern with very compact size and simple structure, which is suitable for various military and commercial wideband applications

42 citations


"Different techniques for creating n..." refers methods in this paper

  • ...Moreover, various methods have been employed for broadening the operating bandwidth of the printed monopole antenna [4-6]....

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Proceedings ArticleDOI
16 Oct 2014
TL;DR: This paper presents the simulation analysis of small planar antennas using different antenna miniaturization techniques to defineminiaturization methods by which the authors can estimate the use of micro strip antennas.
Abstract: In wireless communication, antenna miniaturization is a vital issue these days. This paper presents the simulation analysis of small planar antennas using different antenna miniaturization techniques. They have brought to define miniaturization methods by which we can estimate the use of micro strip antennas. Various govt. and private sector organizations made use of these techniques to solve the problem of antenna fabrication in mobiles, satellites, missiles, radar navigational aids and military applications. These techniques are used to reduce the physical size but to increase the bandwidth and efficiency of antenna. Some approaches for antenna miniaturization are introduction of slots, slits, short meandering and novel geometries like fractals or by using higher dielectrics constant. The effect of miniaturization in various antenna parameters like, radiation efficiency, gain and bandwidth are discussed. Finally the paper reports a brief description of miniaturization of antenna by using suitable and efficient methods that includes use of double layered substrate structure in microstrip patch antenna.

36 citations

01 Jan 2012
TL;DR: This paper reports simulated analysis of small planar antennas (Microstrip Patch Antennas) miniaturization using different methodologies to discuss the effect ofminiaturization on antenna parameters like resonance frequency, return loss, radiation efficiency, and bandwidth.
Abstract: This paper reports simulated analysis of small planar antennas (Microstrip Patch Antennas) miniaturization using different methodologies. The effect of miniaturization on antenna parameters like resonance frequency, return loss, radiation efficiency, and bandwidth are discussed.

17 citations


"Different techniques for creating n..." refers background in this paper

  • ...Radiation patterns are obtained by varying theta ( ) and phi ( ) angles [15]....

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Journal ArticleDOI
Xiao Yan, Zhong-Yong Wang, Ji Li1, Zi-Lun Yuan1, A. K. Qin 
TL;DR: In this paper, a two-step beveled radiant patch and a truncated ground plane are integrated along with the microstrip feeding line, resulting in a band notch from 5.05 GHz to 5.85 GHz.
Abstract: This paper presents a novel compact printed monopole ultra-wideband (UWB) antenna featured with the band notch. The proposed antenna consists of a two-step beveled radiant patch and a truncated ground plane, which can provide a good impedance matching from 3.1 GHz to 10.6 GHz. In order to generate the band-notched characteristics, two symmetrical slots are embedded along with the microstrip feeding line, resulting in a band notch from 5.05 GHz to 5.85 GHz. Accordingly, the mutual electromagnetic interference between the UWB and wireless local area network (WLAN) radio communication systems can be eliminated. In addition, it is shown how the slots integrated on the ground plane improve the radiation patterns. The experimental measurements are found to be in good agreement with the numerical simulations.

8 citations


Additional excerpts

  • ...The geometry of two-step beveled UWB antenna [14], in Fig....

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