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Reflectarrays and transmitarrays are extremely important in the applications of terahertz (THz) technologies, as they feature merits like high gain and low cost. In this work, a reflectarray and a transmitarray are designed at 300GHz. A 32 × 50 offset-fed wideband reflectarray antenna, based on single-layer elements with a large and linear phase response, shows a fixed beam direction without frequency...
The paper presents a 60GHz self-shielded Yagi antenna with pyramidal horn for compact integration to mobile device. The proposed antenna can provide a peak gain of 13.37dBi with 19GHz 3-dB bandwidth and 16GHz of impedance bandwidth. A 5.8dB of antenna gain is increased by adding pyramidal horn. The HPBW is 22deg for the both E- and H-plane.
In this paper, a dual-orthogonal polarized Vivaldi antenna with high port isolation is presented. The dual-polarized antenna structure is achieved by inserting two orthogonal Vivaldi antennas in a cross-shaped form without a galvanic contact. To satisfy the low-end bandwidth requirements and improve the radiation characteristics in the lower frequencies, a novel exponential tapered slot edge (ETSE)...
A stub-loaded wideband dual-polarized antenna is proposed, which is composed of two orthogonal cross loop dipoles, branch-shaped coupling feed line and a box-shaped reflector. The stub inside the loop dipoles are adopted to enhance the impedance bandwidth. A new resonate mode is induced in the higher frequency by using the stub. Therefore, the impedance bandwidth is greatly expanded. Design, simulated...
Two-port, dual band antenna element for wide-angle scanning planar phased array is designed. The antenna element consists of two parts: the annular slot fed by a microstrip line and a circular patch fed by an H shaped slot. The annular slot is used to operate over the L-band and the circular patch over the S radar band. The antenna element demonstrates dual-band performance with sufficient bandwidth...
In this paper we present the design concept for a compact printed monopole antenna for super ultra-wideband (SUWB) applications. The proposed antenna operates over a large bandwidth of 1.5GHz–120GHz with a wide impedance bandwidth and has a return loss value lower than −10dB over the entire ultra band. The monopole features looks like a unique horn-shaped configuration to achieve super wideband frequency...
A low-profile electromagnetic band-gap enabled textile wearable antenna covering the spectrum between the 2.36 and 2.40 GHz of the new released medical wireless body networks (MBANs), is presented. The integrated EBG with the proposed antenna reduces the radiation intensity into the human tissues around 13 dB; and also decreases the effect of frequency detuning. The antenna structure is compact size...
A wideband horizontally polarized (HP) omnidirectional antenna is presented. The tightly coupled array (TCA) mechanism is ultilized into the design of the antenna to realize reduced lower cut-off frequency and improved bandwidth. The −10dB impedance bandwidth is 102.6% from 4.8GHz to 14.7GHz. Meanwhile, uniform omnidirectional radiation patterns with a gain variation of less than 3dB are obtained...
The technique of multiple points feeding in order to achieve improved bandwidth performance is here exploited and used to feed a supershape structured radiator. The achieved operating bandwidth, is an important advancement compared to the performance of the usual, single fed and regularly shaped patch antennas. The proposed antenna operates from 2.5 to 3.9 GHz with linear polarization and its behavior...
This paper presents a novel circularly polarized (CP) printed antenna with wide bandwidth and wide axial ratio (AR) beamwidth. The presented antenna is realized by bending a linearly polarized dipole into “S” shape with variable line width, which achieves circularly polarized radiation. Key parameters in designing such an “S” antenna are discussed and studied. It is found that this “S” antenna has...
In this project, an efficient design of circular shaped microstrip patch antenna for Ultra Wide Band (UWB) applications is proposed with partial ground structure. In the recent era, microstrip patch antenna plays a vital role as they are found to be immensely useful due to its compact nature, easy integration and its light weight. UWB systems are popular because of their larger bandwidth and power...
In this paper, a novel approach of an extracted LC model of monopole antenna with T-slot at ground plane for ultra wide band application is proposed. For extraction of LC model, 50Ω matching between dielectric component and semi conducting at ground plane where T-slot is embedded is done. The monopole with T-slot antenna achieves wide band of 2.1GHz to 11GHz while extracted LC model is 2.1GHz to 10...
The battery strength indicator provided in the taskbar of a PC/ Laptop (usually at the bottom of the desktop) indicates the current battery strength available to the user. The position of this battery strength indicator on the main screen varies from device to device and this indicator describes the required level of charging and duration it would take for the device to reach a completely charged...
The printed monopole antenna having dual band is proposed which operates at frequency 2.54 GHz (Bluetooth) and 5.2GHz (WLAN). Bluetooth and WLAN have been widely applied in all new trending laptops and smart phones. These two technologies are well known for its effective cost and high-speed data connection. The antenna comprises of two rectangular patches of different sizes for the required dual-band...
This, paper has been investigated the Printed Monopole Antenna for the ultrawideband wireless communication system. The effects of defected ground structure are presented on the basis of simulations performed in IE3D for improvement in impedance bandwidth of proposed antenna. A significant improvement in the impedance bandwidth of the printed monopole antenna has occurred because of a small rectangular...
The intent this paper is to introduce a modified design of triangular patch printed slot antenna used for ultra wide band (UWB) applications ranging for 3.1 to 10.6 Ghz. Antenna element was feed by coplanar waveguide (CPW) for the suitable interfacing with monolithic microwave integrated circuits. Here it has been presented by simulation results that the antenna can cover wide bandwidth with suitable...
In this paper coaxial probe fed rectangular Dielectric resonator antenna (DRA) is presented. A cylindrical conductor pin in inserted in to DRA to bring the additional resonance. The impedance Bandwidth (<-10 dB) of 40% was achieved by optimizing the feed location and conductor pin length. And modes were are also identified for corresponding resonances. Probe monopole resonance, TM122 mode of DRA...
A compact antenna with ultra wideband characteristics is proposed which covers the dimension of 23 × 21 mm2. It has a rectangular slotted patch with a circular slot, microstrip feed line and a tapered slot ground with a thickness of 1.6 mm which covers the inexpensive FR4 dielectric substrate. The proposed antenna covers a wider bandwidth of 10.1 GHz (2.90–12 GHz) with stable radiation pattern and...
Dielectric Resonator Antenna (DRA) plays a vital role in the wireless communication systems due to its support for wide impedance bandwidth and symmetrical radiation pattern. Dielectric Resonator Structures (DRS) combined with metallic structures reduce the antenna size at low frequency bands of operation. In this paper, a monopole antenna is designed to operate at 5.5 GHz and the antenna performance...
In this paper, a novel design of a stacked two layer microstrip patch antenna with wideband characteristics is proposed. This paper follows fractal and stacking methodology to improve the characteristics of microstrip antennas. This antenna consists of two circular patches. The upper radiating patch is suspended with Teflon clamps over the lower driving element. The radiating patch is excited through...
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