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Journal ArticleDOI

Analysis of the small band-rejected antenna with the parasitic strip for UWB

05 Jun 2006-IEEE Transactions on Antennas and Propagation (IEEE)-Vol. 54, Iss: 6, pp 1688-1692
TL;DR: In this paper, a band-rejected ultrawideband antenna with one parasitic strip is presented, which is designed to work on a substrate FR4 that has a thickness of 1 mm and relative permittivity of 4.6.
Abstract: A novel band-rejected ultrawideband antenna with one parasitic strip is presented in this paper. It is designed to work on a substrate FR4 that has a thickness of 1 mm and relative permittivity of 4.6, and to operate from 3 to 17 GHz. The proposed antenna is fed by microstrip line and utilizes the parasitic strip to reject the frequency band (5.15-5.825 GHz) limited by IEEE 802.11a and HIPERLAN/2. The size of the antenna is 20/spl times/20 mm/sup 2/ and this antenna has good radiation characteristics. Effects of varying the location and length of the parasitic strip and the structure of the ground and monopole patch on the antenna performance have also been studied.
Citations
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Journal ArticleDOI
TL;DR: Fallahi, Kalteh, and Golparvar Roozbahani as discussed by the authors presented a novel band-notched elliptical slot antenna for UWB communication, which is printed on a dielectric substrate of RT/duroid 6006 with relative permittivity (er) of 6.0, thickness of 1.27 mm, and fed by an elliptical open ended microstrip line connected to the 50 Ω main line.
Abstract: This paper presents a novel band-notched elliptical slot antenna for Ultra Wide-Band (UWB) communication, which is printed on a dielectric substrate of RT/duroid 6006 with relative permittivity (er) of 6.0, thickness of 1.27 mm, and fed by an elliptical open ended microstrip line connected to the 50 Ω main line. This antenna is designed to be used in frequency band of 3.1–10.6 GHz. Bandnotched characteristics of antenna to reject the frequency band of 5.15–5.825GHz, which is limited by IEEE 802.11a, is realized by parasitic inverted-U strip attached to the elliptical slot plane. Effects of varying the parameters of parasitic inverted-U strip on performance of proposed antenna have been investigated. The antenna with optimal parameters obtained from parametric study is fabricated and measured. It is observed that the simulation and experimental results have good agreements with each other. 128 Fallahi, Kalteh, and Golparvar Roozbahani

191 citations

Journal ArticleDOI
TL;DR: In this paper, a new approach is proposed to reject certain bands within the passband of an ultra-wideband planar monopole antenna, which utilizes a mushroom-type electromagnetic-bandgap (EBG) structure.
Abstract: A new approach is proposed to reject certain bands within the passband of an ultra-wideband planar monopole antenna. The proposed approach that utilizes a mushroom-type electromagnetic-bandgap (EBG) structure is proven to be an effective way for band-notched designs. The approach has many advantages, such as notch-frequency tunability, notch-band width controllable capacity, efficient dual-notch design, and stable radiation patterns. Several design examples using conventional mushroom-type EBG and edge-located vias mushroom-type EBG are presented. The examples exhibit good bandstop characteristics to reject the wireless local-area network interference bands (5.2- and 5.8-GHz bands). Besides, the causes that lead to the discrepancies between the simulations and measurements are discussed.

180 citations

Journal ArticleDOI
TL;DR: In this article, a planar ultrawideband (UWB) antenna with dual notched bands is proposed and investigated, where a T-shaped stub embedded in the square slot of the radiation patch and a pair of U-shaped parasitic strips beside the feed line is used.
Abstract: A novel planar ultrawideband (UWB) antenna with dual notched bands is proposed and investigated. The antenna consists of a square patch and a modified grounded plane. To realize dual notched bands characteristics, a T-shaped stub embedded in the square slot of the radiation patch and a pair of U-shaped parasitic strips beside the feed line is used. The advantage of this antenna is the high rejection level in the stopband. The measured results show that the proposed dual-notched-bands planar antenna shows a very wide bandwidth from 2.8 to 11.0 GHz defined by voltage standing wave ratio VSWR <; 2, with two notched bands of 3.3-4.0 GHz (WiMAX band) and 5.05-5.90 GHz (WLAN band), respectively. Both the experimental and simulated results of the proposed antenna are presented, indicating that the antenna is a good candidate for various UWB applications.

170 citations

Journal ArticleDOI
TL;DR: In this article, a planar triangular monopole antenna (PTMA) with two symmetrical corrugations extended from the flat ground plane is proposed to increase the impedance bandwidth up to about 4:1.
Abstract: A novel technique to increase the bandwidth of the conventional planar triangular monopole antenna (PTMA) is presented. With two symmetrical corrugations extended from the flat ground plane, a significant improvement on the impedance bandwidth up to about 4:1 can be achieved. The proposed antenna design is a modification from the conventional volcano smoke antenna (VSA) and can be more compact and easily fabricated. The HFSS 3-D EM solver is employed for design simulation. The effects of the ridged ground plane on the impedance bandwidth are studied. A printed PTMA is fabricated on the FR-4 PCB substrate. Measured VSWR of the printed PTMA with the ridged ground plane is less than 2 from 3 to 12 GHz which covers the UWB frequency band. The measured antenna patterns also show the monopole-type omni-directional radiation patterns from 3 to about 10 GHz.

151 citations

Journal ArticleDOI
TL;DR: In this article, two different slot resonators are embedded into the arc shaped ground plane of the circular disk patch antennas in order to obtain the desired band-rejection around 5.8 GHz.
Abstract: Planar ultrawideband (UWB) antennas with on-ground band-notched structures are studied in this paper. Two different slot resonators, which feature quarter-wavelength and half-wavelength configurations, are embedded into the arc shaped ground plane of the circular disk patch antennas in order to obtain the desired band-rejection around 5.8 GHz. Their principles and characteristics are analyzed and compared in detail providing designers with in-depth understanding and useful design information. By choosing the quarter-wavelength slot resonator, the first spurious stopband can be pushed up to 3 f 0 (f 0 stands for the center frequency of the notch) and this antenna retains a super wide working band which spans from 1.62 GHz to 17.43 GHz. Performance in both the frequency domain and time domain for this antenna has been investigated carefully. The transmission response of a transceiving antenna system and their corresponding transient analysis are discussed at the end of this paper.

134 citations

References
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Journal ArticleDOI
01 Mar 1978
TL;DR: In this article, the authors introduce the reader to the elments of time-domain electromagnetics, which includes baseband-pulse technology and target-signature analysis.
Abstract: The purpose of this paper is to introduce the reader to the elments of time-domain electromagnetics, which includes baseband-pulse technology and target-signature analysis. Baseband pulses are video or carrierless pulses of very short duration, whose spectral content is concentrated primarily from zero frequency through the microwave region of the spectrum. Work in baseband technology began more than ten years ago at the Sperry Research Center with emphasis primarily on its use as an analytical tool, initially to explore the properties of microwave networks [1], and subsequently to determine the intrinsic properties of materials [2]. The experimental phases of these studies were aided by the pioneering development by the Hewlett-Packard Company of their sampling oscilloscope [3]. These techniques were further extended to experimentally analyze and synthesize antenna radiating and receiving elements [4], [5]. Success in the antenna area led to the development of an indoor ground-plane scattering range to measure the impulse properties of targets or obstacles [6]. This type of range obviated the need for an expensive anechoic chamber since time-gating techniques permitted unwanted reflections from the walls and ceilings to be easily eliminated. A sampling oscillosope and an instrumentation computer were used to process target-signature data as a function of illumination angle. At about the same time, analytical techniques were developed which permitted target-signature analysis to be carried out efficiently and accurately in the time domain [7]. Applications where threshold rather than target-signature data is sufficient were also investigated, and for these applications it became clear that because of cost, the sampling oscilloscope had to be replaced by a stable and fast-acting threshold device. To meet this requirement, two different types of tunnel-diode receivers were developed. The successful developmemt of these receivers, together with the design of inexpensive microwave delay-line ranging techniques, led to the evolution of BAseband Radar (BAR) or free-space time-domain reflectometry. BAR devices have been designed and recently demonstrated for various applications, including auto precollision sensing, spaceship docking, airport surface-traffic control, auto braking, tanker-ship docking, harborcollision avoidance, etc. These sensing applications cover ranges from 5 to 5000 ft [8]. In other applications, the development of high-speed subnanosecond logic has impacted the computer field, making higher speed computation possible. Further developments resulted in the construction of a subnanosecond, single coaxial cable scheme for multiplexing data between computer terminals [9]. More recently, baseband-pulse techniques have been applied to the problem of developing a short-range wireless communication link. Here, the low EM pollution and covertness of operation potentially provide the means for wireless transmission without licensing. We review the research areas described above in more detail and refer the reader to references and a comprehensive biblography where sources for detailed information can be found [10].

312 citations

Journal ArticleDOI
TL;DR: In this article, a new ultra-wideband (UWB) antenna for UWB applications is proposed, which is designed to operate from 3.2 to 12 GHz and consists of a rectangular patch with two steps, a single slot on the patch, and a partial ground plane.
Abstract: In this paper, we propose a new ultra-wideband (UWB) antenna for UWB applications. The proposed antenna is designed to operate from 3.2 to 12 GHz. It consists of a rectangular patch with two steps, a single slot on the patch, and a partial ground plane. Details of the proposed antenna design and measured results are presented and discussed. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 40: 399–401, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.11392

304 citations


"Analysis of the small band-rejected..." refers background in this paper

  • ...This behavior is largely because these steps introduce additional parameters (the size of these steps), which affect the coupling between the planar monopole and the ground plane such that the proposed antenna’s impedance matching can be fine-tuned and hence a much enhanced impedance bandwidth can be achieved [10], [ 11 ]....

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Journal ArticleDOI
Yong-Jun Kim1, Do-Hoon Kwon1
TL;DR: In this paper, a CPW-fed planar ultra-wideband antenna with hexagonal radiating elements is presented, where the antenna also has a frequency band notch characteristic.
Abstract: A CPW-fed planar ultra-wideband antenna with hexagonal radiating elements is presented. The antenna also has a frequency band notch characteristic. By inserting a V-shaped thin slot on the hexagonal radiating element, the narrow frequency band notch has been created very close to the desired frequency.

299 citations


"Analysis of the small band-rejected..." refers background in this paper

  • ...Fig. 10(a) and (b) show antenna structures with the conventional way (U-slot or V-slot) to reject the limited band [ 14 ]....

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Journal ArticleDOI
TL;DR: In this paper, a printed planar elliptic patch juxtaposed with the ground pattern in a single substrate providing an ultra-wideband impedance bandwidth is presented, which is achieved by using a new impedance-matching technique of cutting a notch at a ground pattern opposite the microstrip line.
Abstract: A printed planar elliptic patch juxtaposed with the ground pattern in a single substrate providing an ultra-wideband impedance bandwidth is presented. The ultra-wideband property for the proposed antenna is achieved by using a new impedance-matching technique of cutting a notch at the ground pattern opposite the microstrip line. The concavity of the ground pattern serves as an effective means for adjusting the gap between the radiating element and the ground plane. With suitable size of notch chosen, the impedance bandwidth of the proposed antenna can be enhanced. Details of the proposed antenna design and measured results are presented and discussed.

226 citations


"Analysis of the small band-rejected..." refers methods in this paper

  • ...The dimension of the notch is 4 1m m as shown in Fig. 1(b) [ 13 ]....

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Journal ArticleDOI
TL;DR: In this article, the authors presented a low-cost knight's helm shape double-sided printed circuit board (PCB) antenna of size 3 cm/spl times/3 cm for ultra-wideband (UWB) application.
Abstract: This letter presents a low-cost knight's helm shape double-sided printed circuit board (PCB) antenna of size 3 cm/spl times/3 cm for ultra-wideband (UWB) application. The antenna has a return loss of more than 10 dB, constant group delay and gain flatness over the frequency range set by the Federal Communications Commission (FCC) for UWB application. Satisfactory performance was obtained using FR4 substrate, allowing low cost of production. This letter also addresses the experimental measurements of group delay and impulse response, which are commonly overlooked.

207 citations


"Analysis of the small band-rejected..." refers background in this paper

  • ...makes the antenna have a wider bandwidth performance [ 8 ], [9]....

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