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Millimeter-wave (mm-Wave) Massive Multiple Input Multiple Output (MIMO) at 60 GHz is a candidate of advanced wireless communications for indoor environment. Mm-Wave massive MIMO antenna with lower frequency with sectoring technique has been proposed in previous research. Also dual polarized configuration for MIMO in lower frequency and lower number of antenna. Massive MIMO at 60 GHz mm-Wave is not...
Microstrip patch antennas are indispensable in the areas of mobile communication, medicine and RFID, largely due to low costs of fabrication. In this paper, we aim to increase the bandwidth of a patch antenna, operating in the X band region of frequency. For the said purpose, we initially synthesize a co-ax fed patch antenna for a solution frequency of 9 GHz. By the variation of three distinct parameters,...
A compact circular patch with slotted meander line (CPSM) microstrip monopole antenna is proposed for X-band applications. Symmetrical circular patches with rectangular slots on either side of monopole feed line to enhance the bandwidth and gain. Impedance bandwidth of proposed antenna is 11.5 %. The operational frequency range of CPSM antenna is 10.48 GHz to 11.74 GHz (1.26GHz bandwidth). The size...
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 study, A multi band and dual band antenna using slot stepped-impedance resonators(SIR) and coplanar waveguide (CPW) feeding have been investigated. All of the proposed antennas are fabricated on 1-mm FR4 substrates with a dielectric constant of 4.4 and a loss tangent of 0.02. In comparison to the conventional uniform — impedance resonator (UIR), the SIR shows a better control over spurious...
In this paper, we designed the Antenna on a Novel substrate material, which is used to resonate the high frequency in the range of Terahertz. The Antenna has been made up of the model of the microstrip antenna. The Nanoantenna designed and executed in the software HFFS simulation by using different shapes. The simulation result shows the increase in bandwidth as well as the reduction in loss response...
In this paper, the effect of using square cavity with two arc corners on a SIW cavity backed slot antenna is presented. The arc perturbation technique is used to separate the resonant frequencies of two degenerated modes in a square SIW cavity. The behavior of an individual SIW cavity with 2 different arc corners is discussed. The bandwidth improvement is achieved using an arc perturbation technique...
In this article, a compact MIMO dual-band (2.6/3.6 GHz) antenna array for future 5G handsets is presented. The antenna element has a compact with size of 10.5×14.5 mm2. The proposed antenna array elements are symmetrically placed along the long edges of the smartphone, and they are composed of four same antenna types. The reference element antenna consists of U Shape structure and a connected meandered...
A conventional symmetric Zig-zag antenna is improved by adding a shunt shaped dipole at the feeding terminals or a shaped dipole as parasitic reflector, this dipole results in an increment of radiated gain in forward direction while remaining the wider frequency bandwidth of Zig-zag antenna. By means of the method of moments with piecewise-sine bases and Galerkin's procedure, the Zig-zag structure...
This paper presents a discussion on current developments in the design and manufacture of Global Positioning System (GPS) antennas at Chu Associates Inc. The primary focus will be the description of different antenna profiles, broadband characteristics, pattern coverage, axial ratio and VSHR. Consideration will also be given to antenna suitability for use in normal or high accuracy positioning systems...
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%...
A single layer, low profile, compact metamaterial zeroth-order resonator (ZOR) antenna has been proposed in this paper. A composite right/left-handed (CRLH) transmission line structure that is comprised of a single unit cell makes up the complete antenna. The design complexity of the proposed antenna is very low, since it does not involve any vias. A symmetric coplanar waveguide (CPW) structure is...
There is a great development in wireless communication were wireless plays a important role in all day to day things starting from home appliances to military application. Antenna is a device that plays a major role in these applications. Wearable antenna have been welcome nowadays due to the UWB that promises high data rate with wider bandwidth along with low power consumption. Textile antenna is...
In this paper a simple design, compact size, and low cost ultra wide band (UWB) rectangular patch antenna with defective ground plane with WLAN (5.5GHz) band notched characteristics is proposed. The band notch is created by inverted V slot on rectangular patch. The proposed antenna is designed on FR4 substrate of size 18 × 24 × 0.8mm. The antenna achieves an operational bandwidth from 3.3 GHz to more...
A low cost, simple and compact wideband circularly polarized slotted ground plane antenna design is proposed for mobile terminal. The dual annular perturbation slots antenna with asymmetric stub is built on the grounded substrate. The antenna is design to operate in a wideband that covers 1.85–3.02 GHz frequency band at 10 dB. The circularly polarized radiation patterns have been achieved through...
In tne context of a growing interest in tne use of millimetre wave frequencies for railway applications, we propose to analyse the influence of this environment on antenna performances. The railway environment being quite harsh with the presence of lossy and conductive particles and elements, near-field effects can be detrimental to the efficiency of wireless links at these frequencies. This paper...
We present a fully automated method to predict the full radiation patterns and S-parameters of antennas over a large frequency bandwidth using the knowledge of the simulated results at a few frequency points. The frequency points are adaptively selected in regions of fast variations of radiation pattern and S-parameters, as well as in large unsampled regions. The method has a built-in absolute error...
A multi-band Quasi-Yagi antenna based on loop excitation is presented with 68% miniaturization, which is achieved using loop meandering and a novel defected ground structure (DGS), targeting the 2 GHz band. It has a minimum measured −6 dB bandwidth of 249 MHz (0.780–1.029 GHz) in the lower band and 286 MHz (1.932–2.218 GHz) in the upper band covering several LTE bands. The proposed antenna ensures...
In this paper, we present an approach to design conformai HF band multi-antenna system for aircraft using the theory of characteristic modes. The whole antenna system generates omni-directional radiation pattern at 18 MHz, NVIS radiation pattern at 8 MHz and downward radiation pattern at 28 MHz. The antenna system is realized by mounting a set of exciters on the aircraft to excite the currents on...
UWB systems have been proposed as a candidate for the next generation of in-body applications. In order to perform reliable UWB channel measurements, implantable antennas should work in the propagation medium properly. To assess the UWB channel performance, in-body antenna matching should be assured. Besides, an omnidirectional radiation pattern in order to communicate with a sensor array located...
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