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Ultra-wide band (UWB) technology considered as a solution in wireless communication to revolutionize high data rate transmissions. A microstrip monopole antenna with modified Y-shape patch is proposed in this paper, which operates at frequency 3.1–10.6 GHz with Reflection coefficient ≤ −10 dB. Proposed antenna has physical dimension of 24 × 25 × 1.6 mm and considered compact for certain wireless communication...
With compact folded method, a kind of folded crossed dipole ultra wideband antenna is proposed with omnidirectional radiation characteristics on the horizontal direction in this paper. The antenna is comprised of orthogonal crossed semicircular metal discs with twice 90° folded on both ends. Horizontal size is reduced obviously compared with original crossed semicircular disc antenna. This antenna...
Integrating the concept of Antipodal Vivaldi antenna (AVA) and planar disc-shaped dipole, a half space radiation UWB antenna is proposed in this letter. The antenna adopted approximately 1/4 of the disc-shaped dipole as its radiator, fed by the AVA's exponential slot structure. The proposed antenna has an ultra-wide bandwidth and nearly half space radiation pattern. This character makes it applicable...
An ultra-wideband TEM horn antenna with ridge is simulated and designed. The feed mode of the antenna adopts the form that the coaxial line is parallel to the radiation direction. By modeling and simulating in CST Microwave Studio® software, it can realize that the impedance bandwidth of |S11|< −10dB is 1‱30 GHz or more. Within this operating bandwidth, the antenna has directional radiation pattern...
An IR-UWB indoor positioning is proposed in the paper that combines the algorithm of Time-of-Arrival (TOA) and band-gap modulations. The positioning is referenced by three UWB locators that have different band-gap and deployed in a right triangle. An object can determine its position by identifying pulse backscattered on locators and each locator's signatures through recognizing the exact segment...
An 8-port planar UWB MIMO antenna is proposed for 5G micro wireless access point applications in this paper. The proposed antenna is formed by integrating three monopole strips with different structures and resonant modes, thereby resulting in a much wider bandwidth to cover UWB high band (5.15–10.6 GHz) with S11 lower than −10 dB. High isolation (lower than −15 dB) and low ECC (lower than 0.02) are...
In this paper, a novel technique to design a band-notched UWB antenna by using Barium Strontium Titante (BST) is proposed. A printed slot UWB antenna with size of 16 mm× 27 mm is adopted as a basic antenna. A piece of cylindrical BST slab with 1 mm height and 2.4 mm diameter is attached on the feeding layer of the antenna to achieve band-notched characteristics. The simulated −10 dB bandwidth of the...
In this paper, a coplanar waveguide (CPW) fed wide bandwidth T-shaped slot antenna with dual band-notched characteristics is proposed for Ultra-wideband (UWB) applications. The dual band-notches in WIMAX(3.3–3.7GHz) and WLAN(5.15–5.825GHz) applications have been realized by etching an inverted U-slot resonator inside open circuited feeding stub as well as symmetrically placed a pair of straight slit...
A new Ultra-Wideband Antenna with notched band performance for WiMAX is proposed. The antenna has an extended impedance bandwidth from 3 up to 12GHz (120%). The band-notched can be controlled by adjusting the length of the rectangle slot. In order to obtain Omni-directional wide bandwidth antenna with uniform radiation pattern, rounded corners ground plane with two L-shaped slots are utilized to the...
The paper presents an exhaustive visualization of different problems encountered in efficient utilization of spectrum for advanced wireless communication. It is a well known fact that there is a crisis for available radio spectrum due to incredible expansion and advancement of the communication systems and technologies. But in reality, there is no shortage of available spectrum but only lack of advance...
Bandwidth enhancement of a rectangular monopole UWB antenna using M-shaped strip with triple band notched characteristic is presented. Antenna consists of an exciting rectangular patch with two C-shaped and one inverted U-shaped slots along with defected ground plane which is coupled with M shaped strip. By inserting slots to the rectangular patch, three notched frequency bands are achieved. A conceptual...
Bandwidth enhancement of an ultra-wide band swastika slot loaded antenna with band notch characteristic is presented. The antenna consists of an exciting rectangular patch on the front side and a partial ground plane on the backside of the substrate. A swastika shape is etched on patch, by inserting corner slots to the swastika shape, notched frequency band is improved. The simulated impedance is...
This paper is aimed at developing a Hexagonal Patch Microstrip antenna for C Band, X Band and Ku Band Applications. This is designed using FR-4 (Lossy) substrate and validation of model is done using extensive simulations in CST MWS 2011. The proposed design is achieved using 3 steps with each step resulting in a great enhancement in the bandwidth. The proposed antenna works for all frequencies from...
In nowadays communication systems, the size and performance of antennas are simultaneously required, since there is a tremendous demand for an ultra-wideband, compact and efficient antenna structures that may perform at all desired sub-bands starting from LTE (780MHz) up to WiMAX applications (5.5 GHz) with a good level of radiation efficiency and dimensions not exceeding 130mm∗100mm∗10mm. All these...
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...
As the majority of the radio localization applications are adopting the 5.8 GHz band, in this paper, an elliptical slotted patch antenna with a defected ground structure is proposed for wideband Applications. The −10dB S11 bandwidth is 7.8GHz (4.1 GHz to 11.9 GHz).. The effective directional radiation patterns and the large impedance bandwidth has been witnessed from simulation results. The proposed...
This article presents a small antenna for UWB applications on FR-4 Epoxy substrate material with a percentage bandwidth of 147% covering the frequencies from 3.08 GHz to 18.85 GHz. The antenna has a CPW-fed monopole-like structure that facilitates its easy fabrication and interface with other system components. The geometry offers a high frequency bandwidth and an effective matching of the radiator...
A Ultra Wide Band MIMO Antenna is designed whose length is 26mm and the width is 40mm. Its has a features of two planar monopole which is micro strip-fed, to achieve the good isolation. The extended ground stubs are combined in the ground plane on the other face to enhance isolation and increase impedance bandwidth. To form a common ground by ground planes are connected together by using a short ground...
In this paper, a new type of vivaldi antenna, which covers 1.5∼14GHz band, is proposed. By adding Y-shaped slots on both sides of the radiation patch, the surface current of the proposed antenna is converged to the tapered slot line. Meanwhile, the impedance matching capability of the proposed antenna is improved because of the extension of the surface current path. The proposed antenna provides 161%...
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...
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