Bandwidth Enhancement of Symmetrical Fourth-Teeth-Shaped Microstrip Antenna
01 Jan 2018-Vol. 8, Iss: 1, pp 2275-2283
TL;DR: In this article, the influence of the base geometric parameters of the antenna on the bandwidth at the base frequency was studied and the regression analysis was carried out and the mathematical model describing the dependence of the bandwidth on the length and the width of the radiator and the depth of the cuts was developed.
Abstract: The microstrip antenna with a symmetrical rectangular radiator and four teeth is described. The influence of the base geometric parameters of the antenna on the bandwidth at the base frequency was studied. The following geometric parameters of the antenna are selected: the length and the width of the radiator, the depth of cuts, the thickness of the substrate, the length of the ground plane and the width of the feed line. The regression analysis was carried out and the mathematical model describing the dependence of the bandwidth on the length and the width of the radiator and the depth of the cuts was developed. The rootmean-square error and the relative absolute error of the model were calculated. The graphs of the bandwidth dependences on the geometric parameters are presented. It was established that the decrease of the bandwidth values is associated with an increase of the radiator width and the substrate thickness. It was shown that a slight influence on the bandwidth are made by the changes of the radiator length and the depths of the cuts only in the case when the radiator width is much smaller than its length. The proposed formula describing the relationship of the bandwidth with the geometric parameters of the antenna can be used to design a four-tooth antenna with wide bandwidth.
Citations
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01 Feb 2019
TL;DR: The problem of fast designing of a well-matched symmetrical four-tooth-shaped microstrip antenna at frequency of 2.44 GHz is considered and regression models for wavelength, resistance and bandwidth are used to solve the problem.
Abstract: The problem of fast designing of a well-matched symmetrical four-tooth-shaped microstrip antenna at frequency of 2.44 GHz is considered. To solve the problem, we use regression models for wavelength, resistance and bandwidth. The optimization problem for finding the geometrical parameters of the antenna radiator is formulated by using these models. In the first step of approximation, the antenna is obtained as a solution to the optimization problem. In the next step, the geometry of the radiator is refined so as the base frequency of the antenna is closer to 2.44 GHz.
9 citations
01 Sep 2018
TL;DR: The problem of designing a symmetrical eight-tooth-shaped microstrip dual-band Wi-Fi antenna (2.4 GHz and 5 GHz) is considered and a family ofWi-Fi dual- band antennas with a certain ratio of length to depth of rectangular cutouts of the radiator is selected by analyzing the models.
Abstract: The problem of designing a symmetrical eight-tooth-shaped microstrip dual-band Wi-Fi antenna (2.4 GHz and 5 GHz) is considered. At the first stage of antenna design, numerical experiments are performed to determine the dependence of values of the first two resonance frequencies of the antenna and the corresponding bandwidths on the geometric parameters of the radiator. A regression analysis is carried out and regression models for resonance frequencies are obtained. The absolute and relative errors for the models are calculated. A family of Wi-Fi dual-band antennas with a certain ratio of length to depth of rectangular cutouts of the radiator is selected by analyzing the models. Further analysis of the matching and of the bandwidth for the antennas from the obtained family allows determining the best matched Wi-Fi antennas.
7 citations
TL;DR: In this article, a symmetrical tooth-shaped radiator is obtained from a rectangular radiator by adding small symmetrical rectangular cutouts on its two sides, and regression models are constructed for each type of the antenna.
Abstract: Printed monopole antennas with a rectangular radiator as well as
with a symmetrical tooth-shaped radiator are considered. The
tooth-shaped radiator is obtained from a rectangular radiator by
adding small symmetrical rectangular cutouts on its two sides. The
antennas with four-, six- and eight-tooth-shaped radiators are
considered. For the antennas, the influence of the radiator
geometry parameters on the two base resonance frequencies is
studied. The common features and characteristics of the
dependences of the resonances on the radiator parameters are
revealed for the considered tooth-shaped antennas. Regression
models are constructed for each type of the antenna. In the
obtained models, the values of the two base resonances are
functions of the length and width of the radiator as well as of
the depth of rectangular cutouts on it. The designing of dual-band
printed monopole tooth-shaped antennas for various numbers of
cutouts on the radiator is proposed. For the design of the shape
of the radiator antennas, regression models are used, which allow
to obtain the parameters of the radiator for given resonance
frequencies. Examples of obtained antennas with various numbers of
teeth are given. Conclusions about the applicability of antennas
of this type for operation on two bands are given.
4 citations
DOI•
06 Jan 2019TL;DR: In this paper, the influence of the main geometric parameters of the antenna on the base frequency is investigated, including length and width of the radiator, depth of the rectangular cutouts on its radiator, thickness of the substrate, length of the ground and widths of the feedline, where the root-mean-square error and the relative error of these models are calculated.
Abstract: A symmetrical microstrip six-tooth-shaped antenna is considered. The influence of the main geometric parameters of the antenna on the base frequency is investigated. The main geometric parameters of the antenna include length and width of the radiator, depth of the rectangular cutouts on its radiator, thickness of the substrate, length of the ground and width of the feedline. Regression analysis is carried out and several mathematical models are constructed. The first model describes a relationship of the base frequency with depth of the rectangular cutouts, the radiator length and width. The second model describes a relationship between the wavelength at the base frequency and the geometry of the radiator. The root-mean-square error and the relative error of these models are calculated. For the base frequency and wavelength, graphs of dependencies on the geometric parameters of the antenna are plotted. We establish that a decrease in values of the base frequency and an increase in the wavelength is associated with an increase in the depth of cutouts and the radiator length. We show that a slight influence on the base frequency is caused by changes in width of the feedline, thickness of the substrate and length of the ground. The proposed formulas, describing relationships of the base frequency as well as the wavelength at this frequency with the geometric parameters of the antenna, can be used to design a six-tooth-shaped antenna in a wide frequency range.
2 citations
31 Aug 2018
TL;DR: In this article, a dipole wire antenna of the Koch type is considered and a correlation analysis is provided with a correlation of bandwidth as well as relative bandwidth with lacunarity.
Abstract: A dipole wire antenna of the Koch type is considered. The antenna represents a wire dipole symmetrical with respect to the point of feeding. Arms of the dipole have a geometry similar to Koch's pre-fractal. The curves forming the arms differ from the classical Koch fractal only by the position of the central vertex. A family of antennas is singled out, in which the antennas differ from each other by coordinates of the central vertices. An algorithm for calculating lacunarity is described. A correlation analysis is provided with a correlation of bandwidth as well as relative bandwidth with lacunarity. Antennas having the geometry of the first three iterations of a Koch-type curve are chosen for the analysis. The calculated correlation coefficients are given in the tables. It is shown that increasing the iteration leads to a decrease in the correlation between the selected parameters. It is obtained that the correlation coefficients for the relative bandwidth are smaller than those for the bandwidth. Single-parameter regression models for the bandwidth and the relative bandwidth are constructed. The root-mean-square errors for the models are calculated. The proposed regression formulas can be used to design broadband wire antennas.
1 citations
Cites background from "Bandwidth Enhancement of Symmetrica..."
...The main approach to antenna analysis is the study of the influence of the radiator geometry on the antenna characteristics, as it can be seen, for example, in (Abgaryan et al, 2017; Markina et al, 2017; Markina et al, 2017; Markina et al, 2018)....
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References
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Book•
31 Oct 2000
TL;DR: Feeding Techniques and Modeling, Design and Analysis of Microstrip Antenna Arrays: Parallel and Series Feed Systems, and Theory and Design of Active Integrated Micro Strip Antenna Amplifiers.
Abstract: Microstrip Radiators: Various Microstrip Antenna Configurations. Feeding Techniques and Modeling. Applications. Radiation Field. Surface Waves and Photonic Band-Gap Structures. Analytical Models for Microstrip Antennas: Transmission Line Model. Cavity Model. Generalized Cavity Model. Multi-port Network Model (MNM). Radiation Fields. Aperture Admittance. Mutual Admittance. Model for Coaxial Probe in Microstrip Antennas. Comparison of Analytical Models. Full-Wave Analysis of Microstrip Antennas: Spectral Domain Full-Wave Analysis. Mixed-Potential Integral Equation Analysis. Finite-Difference Time Domain Analysis.Rectangular Microstrip Antenna: Models for Rectangular Patch Antenna. Design Considerations for Rectangular Patch Antennas. Tolerance Analysis of Rectangular Microstrip Antennas. Mechanical Tuning of Patch Antennas. Quarter-wave Rectangular Patch Antenna. Circular Disk and Ring Antennas: Analysis of a Circular Disk Microstrip Antenna. Design Considerations for Circular Disk Antennas. Semicircular Disk and Circular Sector Microstrip Antennas. Comparison Of Rectangular And Circular Disk Microstrip Antennas. Circular Ring or Annular Ring Microstrip Antenna. Circular Sector Microstrip Ring Antenna. Microstrip Ring Antennas of Non-Circular Shapes. Dipoles and Triangular Patch Antennas: Microstrip Dipole and Center-Fed Dipoles. Triangular Microstrip Patch Antenna. Design of an Equilateral Triangular Patch Antenna. Microstrip Slot Antennas: Microstrip-Fed Rectangular Slot Antennas. CPW-Fed Slot Antennas. Annular Slot Antennas. Tapered Slot Antennas (TSA). Comparison of Slot Antennas with Microstrip Antennas. Circularly Polarized Microstrip Antennas and Techniques: Various Types of Circularly Polarized Microstrip Antennas. Singly-Fed Circularly Polarized Microstrip Antennas. Dual-Orthagonal Feed Circularly Polarized Microstrip Antennas. Circularly Polarized Traveling-Wave Microstrip-Line Arrays. Bandwidth Enhancement Techniques. Sequentially Rotated Arrays. Broad-Banding of Microstrip Antennas: Effect of Substrate Parameters on Bandwidth. Selection of Suitable Patch Shape. Selection of Suitable Feeding Technique. Multi-Moding Techniques. Other Broadbanding Techniques. Multifrequency Operation. Loaded Microstrip Antennas and Applications: Polarization Diversity Using Microstrip Antennas. Frequency Agile Microstrip Antennas. Radiation Pattern Control of Microstrip Antennas. Loading Effect of a Short. Compact Patch Antennas. Planar Inverted F Antenna. Dual-Frequency Microstrip Antennas. Dual-Frequency Compact Microstrip Antennas. Active Integrated Microstrip Antennas: Classification of Active Integrated Microstrip Antennas. Theory and Design of Active Integrated Microstrip Antenna Oscillators. Theory and Design of Active Integrated Microstrip Antenna Amplifiers. Frequency Conversion Active Integrated Microstrip Antenna Theory and Design. Design and Analysis of Microstrip Antenna Arrays: Parallel and Series Feed Systems. Mutual Coupling. Design of Linear Arrays. Design of Planar Arrays. Monolithic Integrated Phased Arrays.
3,612 citations
"Bandwidth Enhancement of Symmetrica..." refers background in this paper
...Introduction Nowadays microstrip antennas are among the most common and widely used types of antennas [1]....
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...The most studied of them are microstrip antennas with rectangular and other radiators of simple geometry [1, 2]....
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Book•
01 Mar 1985
TL;DR: Aperture Distributions and Arrays Synthesis as discussed by the authors is a technique used to synthesize antenna arrays, which are then used to measure the distance from the source to the sink. But it requires the antenna array to be symmetric.
Abstract: Preface. 1. Properties of Antennas. 2. Radiation Structures and Numerical Methods. 3. Arrays. 4. Aperture Distributions and Arrays Synthesis. 5. Dipoles, Slots, and Loops. 6. Microstrip Antennas. 7. Horn Antennas. 8. Reflector Antennas. 9. Lens Antennas. 10. Traveling Wave Antennas. 11. Frequency-Independent Antennas. 12. Phased Arrays. Index.
816 citations
"Bandwidth Enhancement of Symmetrica..." refers background in this paper
...The most studied of them are microstrip antennas with rectangular and other radiators of simple geometry [1, 2]....
[...]
15 May 2015
TL;DR: In this paper, the effect of changing substrate material and thickness on the performance of the antenna has been analyzed and the authors have shown that the antenna performance changes when the substrate material is varied.
Abstract: In order to design a microstrip patch antenna at first the designer is to select the substrate material and it’s thickness. So, if the designer has a clear conception about the effect of changing substrate material and it’s thickness on the performance of the antenna, it will be easier to design an antenna. Appropriate selection of dielectric material and it’s thickness is an important task for designing a microstrip patch antenna. This paper represents that how antenna performance changes when we vary substrate material and it’s thickness. The designed inset feed rectangular microstrip patch antenna operates at 2.4GHz (ISM band).
77 citations
"Bandwidth Enhancement of Symmetrica..." refers background in this paper
...For example, in [26], authors studied the influence of thickness and the filling of the substrate on the bandwidth....
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TL;DR: In this article, a modified ground plane with diagonal edges, rectangular slot, and T-shape cut for the design of compact antennas was proposed to enhance the return losses of the first and second resonant frequencies.
Abstract: This article presents a bandwidth enhancing technique using a modified ground plane with diagonal edges, rectangular slot, and T-shape cut for the design of compact antennas The proposed low-cost, compact-size circular patch antenna on 3 cm × 51 cm printed circuit board (FR-4) is designed and validated through simulations and experiments Results show that the T-shaped ground plane with the presence of the diagonal cuts at the top corners and the rectangular slots can increase the bandwidth Return losses of −19 and −26 dB for the first and second resonant frequencies, respectively, can be achieved when the depth of the diagonal cut is 5 mm, the dimension of each rectangular slot is 5×3 mm, and the T-shaped size is 8×4 mm, providing a 2867% wider bandwidth than FCC standard
55 citations
"Bandwidth Enhancement of Symmetrica..." refers methods in this paper
...The ground plane is changed [11-14], as well as other methods [15, 16] are used, including the use of metamaterials [17, 18]....
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TL;DR: In this paper, a microstrip patch antenna with bandwidth enhancement by means of artificial magnetic conductor (AMC)/electromagnetic band-gap structure (EGB) was presented, and the electrical characteristics of the embedded structure were evaluated using MoM simulations.
Abstract: A microstrip patch antenna with bandwidth enhancement by means of artificial magnetic conductor (AMC)/electromagnetic band-gap structure (EGB) is presented The electrical characteristics of the embedded structure are evaluated using MoM simulations The manufactured prototypes are characterized in terms of return loss, gain, and radiation pattern measurements in an anechoic chamber
49 citations
"Bandwidth Enhancement of Symmetrica..." refers methods in this paper
...The ground plane is changed [11-14], as well as other methods [15, 16] are used, including the use of metamaterials [17, 18]....
[...]