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Novel application of Substrate Integrated Cavity (SIC) for suppressing cross-polarized (XP) radiation in hexagonal microstrip antenna has been proposed. The proposed design consists of a pair of tiny circular SICs consisting of metallic vias located symmetrically on the H-plane of the hexagonal patch. The design has been simulated in Ansys HFSSTM to establish the proposition that the incorporation...
In this paper antenna on silicon is presented. This paper proposes design of micro strip antenna on silicon with improved bandwidth. Proposed antenna is for X-band frequency. To improve bandwidth, ground defect being created on silicon substrate. With this we are improve bandwidth by 4–8 times. Designed verified both in HFSS simulation tool and on VNA after fabricating device.
A circularly polarized microstrip antenna installed on the surface of a cone is proposed in this paper. The radiation patch with a pair of crossed slot conformal on the conical surface is fed by a coaxial line and the antenna has a good circularly polarized characteristics and impedance matching by adjusting the length of the crossed slot and the feed position. This antenna is working on GPS and Beidou...
Design and analysis of multilayer stacked-patch antenna with LTCC-technology. It is shown that changing the number of the dielectric layers can increase the working band-width of the antenna compared with single-layer antennas. The use of passive elements in the construction of the antenna (multilayer microstrip antenna) can reduce the change of the impedance of the antenna when changing the frequency...
The need in today's wireless applications is to design antennas that are compact, robust and effortless to integrate with RF circuit components. Microstrip patch antenna is one such type which satisfies these requirements. But the two main performance parameters of an antenna namely the gain and the bandwidth are near to the ground for patch antennas. Usually the gain range of a patch antenna is 1–2dB...
The design of high antennas for wireless communication is very essential. The main drawback of the microstrip patch antenna is the low gain. The Metamaterial superstrate layer along with antenna structure improves the antenna performance parameters like gain and bandwidth. Due to Ultra refraction phenomenon, radiation is concentrated normal to the patch so that unwanted sidelobes can be avoided. This...
The need to high frequency applications with small packaging require to use microstrip and printed antenna with developing technique to go forward with advanced technology today. Miniaturization usually comes at a price of reduced bandwidth, in this paper; the bandwidth enhancement techniques for microstrip antenna is presented with a major emphasis on the recent trends of minimization techniques...
According to the working principle and the actual correction of the RFID microstrip antenna, this paper designed a new type of rectangular microstrip antenna which worked under the condition of circular polarization, and in this design, the new type of rectangular microstrip antenna is obtained by loading an equal number of rectangular slot in the each broadside of the symmetrical triangle cutting...
A three-layer printed microstrip antenna (PMA) is proposed for harvesting energy from mobile phone base stations transmissions in the GSM900 frequency band. A half-wave printed microstrip dipole is used as a radiator while two passive elements are used to act as a director and reflector. The achieved bandwidth for VSWR 2∶1 ranges from 908.5 to 942.5MHz. A design method for balanced stripline to microstrip...
A new design of a microstrip antenna using Photonic Band Gap (PBG) substrate, with quasi-periodic symmetry is proposed. Antenna parameters such as return loss (S11), bandwidth, gain on the radiating element and electric field in the substrate were analyzed. The PBG structure proposed has distribution of air holes on a quasi-periodic mesh with symmetry 12 times applied to the dielectric substrate....
In this paper, the rectangular microstrip antenna is analyzed by using the theory of characteristic modes (TCM). Characteristic modes of microstrip antennas with different shapes of ground are presented to provide physical understanding of the radiating behavior. The microstrip antennas operated at different modes are verified by both HFSS simulated and measured results. Resonance frequency, near...
A Wave Concept Iterative Procedure (WCIP) based on transverse waves formulation is presented. This method is applied to analyze annular microstrip patch antennas on anisotropic substrates. The use of FFT algorithm to define a fast modal Fourier transform results in accurate solutions with significant savings in computation time and memory requirements. WCIP results are compared with the HFSS simulation...
This paper presents a development of microstrip antenna for Handheld Ultra High Frequency (UHF) Radio Frequency Identification (RFID) Reader Applications. The proposed antenna is made up of the rectangular shape at the patch and partial ground plane. The antenna is designed to operate at a frequency of 919 MHz to 923 MHz allocated for UHF RFID system in Malaysia. Furthermore, the result of antenna...
In this paper, a V-band tunable reflectarray unit cell using an interdigital gap loading structure is presented. Tunability is achieved by loading the antenna element with Barium Strontium Titanate (BST) thin film along the IDC gap. The effects from substrate thickness and patch width on the reflection properties are investigated using full-wave simulations. A unit cell design demonstrating an overall...
This paper proposes a model of the rectangular microstrip antenna based on the integral equation method and thin-wire approximation of a metal patch. A substrate is taken into consideration by inserting values of dielectric effective permittivity in the integral equations. The comparison of the calculated input impedance and resonant frequency with the experimental data and modeling results in commercial...
This paper presents a circularly polarized E shaped microstrip single layer patch antenna with parasitic element for the reader of the UHF RFID livestock monitoring system. The antenna is designed to operate at a frequency of 919 MHz to 923 MHz allocated for UHF RFID systems in Malaysia. The antenna simulation is analyzed using CST Studio Suite 2013 based on Finite Integral Techniques (FIT). In order...
In this work, the radiation characteristics of the microstrip fed rectangular patch antenna is analyzed for 2.4 GHz applications. The microstrip patch antenna consists of a pair of electrically conducting layers separated by a 1.5 mm dielectric material. The RT Duroid 5880 is used as dielectric substrate and it has dielectric permittivity of 2.2. Low dielectric constant substrates are essential for...
A new design of obtaining multi-system dual-band circularly-polarized radiation of a square microstrip patch antenna for GNSS navigation terminal devices is proposed in this paper. The proposed antenna comprises square microstrip patches, which own advantages of simple structure and easy to be stacked and loaded. In addition, RIS technique is applied for antenna gains improvement and size reduction...
Effect of physical and geometrical parameters of tunable microstrip antenna structure on its alteration characteristics and radiation efficiency is investigated. It is shown that method of changing the dimensions of air gap between substrate and radiator allows increasing bandwidth and efficiency of antenna radiation. Recomendations in selecting a substrate material are also presented.
In this paper, a new design for U-shaped microstrip patch antenna is proposed, which can be used in WiMAX communication systems. The aim of this paper is to optimize the performance of microstrip patch antenna. Nowadays, WiMAX communication applications are widely using U-shaped microstrip patch antenna and it has become very popular. Our proposed antenna design uses 4-4.5 GHZ frequency band and it...
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