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This paper presents a low profile unidirectional UWB cavity backed antenna analyzed using The Theory of Characteristics Modes (TCM). The main goal of this work is to design a low profile UWB antenna with a very stable and unidirectional radiation pattern. The proposed design is based on exciting the fundamental mode of a cavity structure composed of a metallic ring, a circular waveguide and two circular...
This paper introduces detailed information about a miniaturized compact super broadband printed antenna. The antenna consists of a semicircular patch, microstrip line and a partial ground plane, which is fabricated on a low cost, commercially available FR4 substrate. The overall size of the dielectric substrate is 38 × 43 × 1.5 cubic millimeter. This simple structure of the antenna has an impedance...
In this paper, an accurate equivalent circuit model is presented for a triple frequency rejection band UWB antenna that provides the desired frequency rejection function at center frequencies of 2.92 GHz, 4.06 GHz and 5.28 GHz. The extraction of the equivalent circuit model of the presented antenna mainly depends on the impedance characteristic of electromagnetic (EM) simulation. The equivalent circuit...
In this letter, a simple compact dual-polarized ultrawideband (UWB) multiple-input–multiple-output (MIMO) antenna is presented with the circularly polarized band for WiMAX (5.5 GHz) and WLAN (5, 5.2 GHz) applications. The antenna parameters such as reflection coefficient, diversity performance, gain, axial ratio, and isolation have been studied on a fabricated prototype of the proposed antenna. The...
A new ultra-wideband planar microstrip antenna obtained by combining rectangular and circular shaped planar monopole patches is proposed. The optimum feed-line position is obtained individually for rectangular and circular patches by studying their surface current distributions. The rectangular and circular geometries are then merged to obtain a modified configuration. A parametric study for varying...
A coplanar waveguide (CPW) — fed compact cupcake shaped printed antenna is proposed for UWB applications. Cupcake structure is formed by capping an ellipse (eccentricity = 0.95) over a semicircle (radius = 12mm). The bandwidth is enhanced by loading an ellipse over the semicircular patch and using CPW ground plane. The antenna parameters are simulated and optimized using Ansoft HFSS electromagnetic...
This paper proposes a novel heart-shaped band-notched UWB antenna with compact and simple structure. The antenna comprise of a microstrip feeding line, a heart-shaped patch to achieve UWB characteristic, and a defected ground with bevels to obtain good impedance match and stable gain in the operating band. The band-notched characteristic is achieved by a U-shaped slot on the patch. The measured results...
A novel frequency notched ultra-wideband microstrip antenna with GSRR structure is proposed. The antenna consists of a conventional fork-shaped radiation patch and split ring resonator in slot of modified ground plane (GSRR). By introducing this split ring resonator, the antenna has a good band-notched performance in the WLAN band 5–6 GHz. The proposed antenna is successfully simulated, designed,...
This paper presents the design of a novel and compact microstrip-fed monopole super wideband (SWB) antenna with dual band-notch characteristics. The antenna impedance bandwidth (BW) extends from 3.2 reaching to 40 GHz. Moreover, the antenna inherently reject both the WLAN and X-band satellite communication systems that interfere with SWB spectrum. The antenna is analyzed using two software packages:...
In this paper, a low-profile microstrip monopole antenna with an ultrawide bandwidth (UWB) is proposed. Via holes, rectangular patches, and a tune stub connecting ground plate are employed to improve the gain and impedance bandwidth of the antenna. Meanwhile, the antenna is etched on a single-layer substrate lowering the cost and complexity of manufacturing process. HFSS software is used to design...
This paper presents a printed microstrip-fed heart-shaped monopole antenna for ultra-wideband (UWB) applications. The printed monopole antenna consists of a heart-shaped radiating patch with a microstrip feeding line and an elliptical curved ground plane to improve the impedance bandwidth. Commercial software ANSYS HFSS is used to analyze and design this antenna. Measured results of the fabricated...
A compact microstrip fed ultra-wideband(UWB) antenna with dual band notched characteristics is presented. The antenna comprises of an elliptical UWB patch antenna with partial arc shaped ground plane fed by micro-strip transmission line. Two open-ended quarter-wavelength straight slots are etched in the patch to generate the two notched band. The UWB antenna covers a wide impedance bandwidth ranges...
A planar multilateral monopole antenna with rabbet structure for ultra-wideband (UWB) application is proposed and experimentally studied. By modified a rabbet structure on the multilateral patch, a UWB response has been is improved. The proposed antenna has wide impedance bandwidth from 2.4 GHz to more than 11 GHz with better than −10 dB return loss. The design is demonstrated assuming FR4 substrate...
A compact single notch microstrip-fed monopole ultra-wideband (UWB) antenna with bandwidth (BW) enhancement is proposed. To improve the impedance BW, a rectangular slot is etched in the bottom edges of a rectangular radiating patch and the feed line is modified in staircase manner with single step junction. As a result, the antenna achieves a wide operational impedance BW ranging from 3.25 to 40 GHz...
Analysis of ultra-wideband antenna for Sectoral shaped microstrip patch for angle increasing from 90° to 330°, for realized bandwidth and gain is presented. To optimize the individual patches, center or offset feed microstrip line is used. A bandwidth of around 15 GHz is obtained, in Sectoral patches with angle increasing from 90° to 180°, whereas for Sectoral patches with angles increasing from 210°...
in this letter, a new microstrip antenna for UWB applications is suggested. The antenna is able to filter both of the interference frequency bands of WiMAX and WLAN. The antenna consists of two radiating stubs, a partial ground, and a feed-line. In the configuration, by etching an inverted T- shaped slot on the ground plane, extra resonance is excited, thus broad impedance bandwidth can be obtained...
Modified rectangular shape ultra wide band microstrip antenna with microstrip line feed is proposed. The effects of tapering structure on the realized bandwidth are discussed. The tapered end configuration yields bandwidth of 15.4 GHz with a peak gain of 2 dBi. Further, the effect of replacing the tapered end structure with an elliptical base structure is investigated. The elliptical base antenna...
A compact planar monopole antenna with dimensions of 34mm × 25mm × 1.6mm, which could provide an ultra-wide impedance bandwidth with the range from 2.40 GHz to 11.88 GHz is presented in this paper. The antenna consists of a small-sized ground plane, a hexagonal radiating patch, and two L-shaped parasitic strips close to the microstrip-line. Resorting to the two parasitic strips, two additional resonant...
This paper presents frequency band-notched antenna to overcome electromagnetic interference (EMI) between UWB systems and Wireless Local Area Networks (WLANs) based on IEEE 802.11a standard for Ultra Wide-Band (UWB) communication. The proposed antenna is designed on FR4 substrate having a size of 12×18 mm2 with thickness of 1.6 mm and relative permittivity (εr) of 4.4 which provides frequency notching...
A simple and ultra wide-band patch antenna with semicircular slot and coplanar waveguide is presented in this study. Proposed antenna consist of a three forth circular patch tapered from a micro strip. This antenna is etched on a FR-4 substrate with an overall size of 31mm x 32mm x 1.6mm. Simulated results of proposed antenna are showing that it is a good candidate of UWB antenna. The proposed antenna...
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