The analysis of a regular polyhedron microstrip antennas with frustum of a right circular cone substrate for ultra wideband applications

2007 ◽  
Author(s):  
Yasser M. Madany
Keyword(s):  
Microstrip Antennas ◽  
Circular Cone ◽  
Regular Polyhedron ◽  
Ultra Wideband

scholarly journals Bandwidth Improvement in Bow-Tie Microstrip Antennas: The Effect of Substrate Type and Design Dimensions

2020 ◽  
Vol 10 (2) ◽  
pp. 504 ◽  
Author(s):  
Halgurd N. Awl ◽  
Yadgar I. Abdulkarim ◽  
Lianwen Deng ◽  
Mehmet Bakır ◽  
Fahmi F. Muhammadsharif ◽  
...  
Keyword(s):  
Simulation Analysis ◽  
Microstrip Antennas ◽  
Ultra Wideband ◽  
The Novel ◽  
Substrate Type ◽  
Antenna Performance ◽  
Uwb Applications ◽  
The Impact ◽  
Bow Tie ◽  
Good Agreement

In this work, the impact of substrate type and design dimensions on bow-tie microstrip antenna performance and bandwidth improvement is presented both numerically and experimentally at 4–8 GHz. The finite integration technique (FIT)-based high-frequency electromagnetic solver, CST Microwave Studio, was used for the simulation analysis. For this purpose, four bow-tie microstrip antennas were designed, fabricated, and measured upon using different materials and substrate thicknesses. Precise results were achieved and the simulated and experimental results showed a good agreement. The performance of each antenna was analyzed and the impact of changing material permittivity, antenna dimensions and substrate thicknesses on antenna performance were investigated and discussed. The measured results indicated that the slot bow-tie antenna, which is one of the novel aspects of this study, is well matched and a 2-GHz bandwidth [5–7 GHz] is obtained, which is about 50% bandwidth in comparison with the wideband applications [4–8 GHz]. The proposed structure is useful in ultra-wideband (UWB) applications. This study provides guidance in selecting material types and thicknesses for microstrip antennas based on desired applications.

scholarly journals Design Studies of Ultra-Wideband Microstrip Antennas with a Small Capacitive Feed

2007 ◽  
Vol 2007 ◽  
pp. 1-8 ◽  
Author(s):  
Veeresh G. Kasabegoudar ◽  
Dibyant S. Upadhyay ◽  
K. J. Vinoy
Keyword(s):  
Patch Antenna ◽  
Ground Plane ◽  
Microstrip Antennas ◽  
Design Criterion ◽  
Air Gap ◽  
Ultra Wideband ◽  
Design Parameters ◽  
Impedance Bandwidth ◽  
Rectangular Patch ◽  
Almost All

The design of an ultra-wideband microstrip patch antenna with a small coplanar capacitive feed strip is presented. The proposed rectangular patch antenna provides an impedance bandwidth of nearly 50%, and has stable radiation patterns for almost all frequencies in the operational band. Results presented here show that such wide bandwidths are also possible for triangular and semiellipse geometries with a similar feed arrangement. The proposed feed is a very small strip placed very close to the radiator on a substrate above the ground plane. Shape of the feed strip can also be different, so long as the area is not changed. Experimental results agree with the simulated results. Effects of key design parameters such as the air gap between the substrate and the ground plane, the distance between radiator patch and feed strip, and the dimensions of the feed strip on the input characteristics of the antenna have been investigated and discussed. As demonstrated here, the proposed antenna can be redesigned for any frequency in the L-, S-, C-, or X-band. A design criterion for the air gap has been empirically obtained to enable maximum antenna bandwidth for all these operational frequencies.

scholarly journals An Integrated Design of GSM and Bluetooth Ultra Wide-Band (UWB) Monopole Antenna for Wireless applications

2019 ◽  
Author(s):  
Praveen Gorla ◽  
Sushma Amirisetti ◽  
Ravuri Sai Teja ◽  
Korrapati Karthik
Keyword(s):  
Ground Plane ◽  
Integrated Design ◽  
Microstrip Antennas ◽  
Simulation Software ◽  
Monopole Antenna ◽  
Ultra Wideband ◽  
Dual Band ◽  
Central Position ◽  
Band Frequency ◽  
Triple Band

Wireless communication plays a major role in technology transformation into new dimensions where it require most efficient transreceivers which are basically known as antennas for establishing communication between nodes to node.There are different types of antennas used for regenerating different frequencies for different applications. In satellite communication, in air and space crafts or in missile applications where mass, heaviness, volume,budget, performance etc. are the main requirements to design antennas. Such requirements are fulfilled by the Microstrip Antennas . Microstrip Antennas are designed to meet these specifications and hence are widely used in many applications such as global system for mobile communication (GSM), the global positioning system (GPS), personal communication,etc.. A compact microstrip feed with triple band circular monopole antenna which can operate frequencies ranging over GSM (1.78 to 1.82GHz),Bluetooth (2.4 to2.48GHz) and Ultra wideband (UWB:3.10 to 10.6GHz) bands are designed and investigated for wireless applications.By a generalized circular radiating monopole with destructive ground plane,the UWB frequency operation is achieved. Further proceedings, the central part of the radiating antenna is removed by slotting it and then etching a half wavelength circular arc from the radiating patch antenna to achieve a dual band frequency operation over Bluetooth and UWB.The triple band frequency operation is realized by embedding quarter wavelength parasitic element/strip resonating at 1.8GHz placed at the slotted central position in the radiating patch antenna.In this project triple band circular monopole antenna is designed and simulated using electromagnetic simulation software HFSS(15.0).The implementation of the proposed antenna is done on FR4 dielectric substrate having a dielectric constant of 4.4 and loss tangent of 0.02. The antenna covers the three bands of operation with reflective coefficient <-10dB.The antenna also exhibits stable radiation patterns for entire UWB. As a result,integrated lower frequency bands are achieved.

scholarly journals Increasing Gain Evaluation of 2×1 and 2×2 MIMO Microstrip Antennas

2021 ◽  
Vol 11 (5) ◽  
pp. 7531-7535
Author(s):  
M. O. Dwairi
Keyword(s):  
Radiation Pattern ◽  
Patch Antenna ◽  
Microstrip Antennas ◽  
Substrate Material ◽  
Ultra Wideband ◽  
Uwb Antenna ◽  
Wideband Antenna ◽  
Mimo Antennas ◽  
Simulation Results

In this paper, a semi-circular ultra-wideband antenna has been modified according to the 2×1 and 2×2 MIMO scenarios. The proposed antennas were designed based on the FR-4 substrate material with dimensions of 36×50mm and 60×60mm for 2×1 and 2×2 scenarios respectively. Simulation results show that a gain improvement of the proposed MIMO antennas from 1 to 2.5dB has been achieved in comparison with the single patch antenna. The radiation pattern for the original and the proposed 2×2 MIMO antennas are exhibited. The main advantage of the proposed antennas is that the gain improves without the need to increase the operating power. This makes the proposed MIMO antennas suitable to be used for UWB antenna applications.

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