Multiple bands stacked microstrip patch antenna for satellite communications

Author(s):  
Boutheina Tlili ◽  
Hadef Ahmed Alshamsi
2018 ◽  
Vol 11 (19) ◽  
pp. 1-4
Author(s):  
V. Keral Shalini ◽  
M. Annakamatchi ◽  
S. Arthireena ◽  
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...  

Microstrip antennas find wide applications in high-speed vehicles, and missiles, tanks, satellite communications, mobile communications and wireless communications etc. The main advantage of these antennas over conventional microwave antenna is light weight, low volume, low cost, planar structure and compatibility with integrated circuits. The present paper deals with the design and simulation of an inset feed rectangular microstrip patch antenna using different dielectric substrate materials such as Arlon AD320, FR4 (Epoxy glass) and Vaccum (Air) and having dielectric constant ( )= 3.2, 4.4 and 1.0 respectively and also comparing their performance characteristics. The resonant frequency of the proposed antenna is designed at frequency of 1.9 GHz, which is lying in the L-band region. The antenna software such as High Frequency Structure Simulator is used for designing of proposed antenna. The simulation results shows the maximum bandwidth is 40MHz and minimum gain is 2dB is obtained using FR4 (Epoxy-glass) substrate whose dielectric constant ( ) = 4.4, at which return loss is -35.67dB. Maximum gain is 9.72dB and bandwidth is 39MHz obtained using Vaccum (Air), whose dielectric constant ( ) = 1.0. However, 6 dB gain and 25MHz bandwidth is obtained using Arlon AD 320A substrate, whose dielectric constant ( ) = 2.2 at which return loss is obtained -24.57dB. The proposed antenna can be used for military telemetry, GPS, mobile phone (GSM) and amateur radio applications.


2021 ◽  
Author(s):  
A. Pon Bharathi ◽  
Allan J Wilson ◽  
S. Arun ◽  
V. Ramanathan

This examination work is focused around planning and simulating another kind of inset feed Disc Shaped Microstrip Patch Antenna (DSMPA) with Inset feed and Defected ground plane (DGP). By presenting a round space at the focal point of the ground plane, improved attributes of Microstrip patch antenna can be accomplished. The proposed Disc Shaped Microstrip patch antenna is reverberating at 5 GHz. Simulation has been finished by utilizing reenactment programming HFSS version15. From recreation results, it discovers that our examined Disc Shaped Microstrip patch antenna yields better return loss of - 25.1 dB & VSWR estimation of 0.96 dB. The examined DSMPA is yielding a higher radiation efficiency of 77.20 %. The minimized size and higher radiation efficiency contrasted with rectangular Microstrip patch antenna makes it all the more generally helpful for satellite communications.


This article focuses on designing a single-feed circularly polarized equilateral triangular microstrip patch antenna. The axial ratio bandwidth of the antenna is around 190 MHz. The antenna has been etched at specific locations for achieving circular polarization. The suppression of surface waves is also being focused upon for gain enhancement. The array of cylindrical metallic pins is embedded near the radiating side of the patch antenna. The gain enhancement of around 3.23 dB is observed. The antenna is designed for use in satellite communications.


2020 ◽  
Vol 9 (1) ◽  
pp. 1297-1300

Microstrip antenna is used in wide area of applications such as high speed vehicles, missiles, tanks and satellite communications. In these applications dielectric superstrate (or cover) is used above the square patch antenna for providing the protections from severe environmental conditions such as rain, snow, heat, and damage etc. The proposed square microstrip patch antenna is designed using coaxial probe feed technique and transmission line model and operated at center frequency of 2.40 GHz, which is lying in the S-band region. The proposed model is used in linear polarization applications. The square patch is fabricated on low loss dielectric substrate material having dielectric constant is 2.2 and loss tangent of the substrate material is 0.0009. Ansoft electromagnetic simulator software such as HFSS is used for simulating proposed model and studied the effect cover or superstrate on different parameters of square patch antenna. This paper mainly focuses on the performance of square patch antenna without superstrate, and with superstrate at different height of dielectric superstrate above the patch antenna. The result found of patch antenna without superstrate the bandwidth is 0.04GHz and gain is obtained 8.9 dB and 7.51 dB in azimuth and elevation respectively. The result observed of patch antenna with dielectric cover (or superstrate) at height H =0, the antenna performance characteristics are slightly degraded and also comparing the antenna with the bandwidth is decreased to 0.02GHz from 0.04 GHz and gain is decreases to 6.44 dB and 6.6 dB from 8.9 dB and 7.51 dB in both azimuth and elevation plane respectively. The decreased performance characteristics of antenna will be improved by varying height of the superstrate above the patch antenna.. At particular optimum height, the performance characteristics patch antenna will be almost same as the patch antenna without superstrates. The obtained simulated results good match with measurement results.


2020 ◽  
pp. 76-80
Author(s):  
Nithya S ◽  
Durga S ◽  
Manikandan S ◽  
Aswatha R

A wideband microstrip patch is proposed for 5G communication. Two rectangular slots are etched both from the highest and bottom of the oblong radiator to offer it the form of W and inset-cut feed line respectively. Antenna structure is radiating over wide frequency bands including 4.25 GHz, 7.055GHz, 12.48GHz and 15.26GHz bands. The directivity of the antenna is maximum at frequency 12.48GHz frequency which is used for satellite communications. VSWR obtained at these frequencies are 1.157, 1.052, 1.121 and 1.066. The overall antenna size is 30 X 25 mm2 with a substrate as FR4. Computer Simulation Technology Microwave Studio Version (CST MWS) tool is employed to style and simulate the proposed antenna structure. Consequently, this antenna has a plus of covering a good range of wireless applications.


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