Performance Analysis of Rectangular Patch Antenna for Different Substrate Heights

In this paper, a study of new design of pentagonal microstrip patch antenna for wireless communications applications. The proposed antenna has regular pentagonal patch (provide dual bands (2.6-7.5) GHz, (8.7-20) GHz) which is modified to irregular shape with the same area to obtain better characteristics from bandwidth and gain point of view and offer gain vary from -3dBi to 3dBi. It is noted that the final pass band (i.e. S11≤-10dB) is (2.6-20) GHz. The gain is improved by making slots in the irregular pentagonal patch to be in the range between (-0.95dBi - 4.4dBi). Both the irregular pentagonal antenna without slots and with slots are fabricated and tested practically using vector network analyzer (VNA) for the reflection coefficients (S11), voltage standing wave ratio (VSWR) and input impedance. Each of these antennas regular pentagonal patch, irregular pentagonal patch without slots and with slots are printed on FR4 having relative dielectric constant er=4.3, and loss tangent (tanδ) of 0.02. It is printed on (33 x 30 x 1.6) mm3 substrate. It is found that the simulation results and the measured results agree mostly, the small error is attributed to the fabrication error. It is concluded that the irregular pentagonal antenna with slots provide better characteristics.

In this paper, a multi resonant MPA capable of operating satisfactorily in the frequency range of 2.39 GHz to 5.79 GHz have been proposed. The antenna has been designed using substrate of FR4 material having dielectric constant of 4.4 with a conducting radiating patch on the substrate and a conducting ground plane on the bottom side of substrate. The ground plane has been partially reduced to improve the antenna bandwidth. The antenna performance has been analyzed in terms of various antenna parameters such as return loss (dB), impedance bandwidth (GHz), gain (dB), directivity (dBi), Half power Beam width (Degree), current density and VSWR. The antenna has been designed and simulated using CST Microwave Studio (2010). The designed MPA is suitable to be used for Bluetooth, IMT, WLAN and WiMAX applications. The antenna has bandwidth of 3.40 GHz and VSWR of less than 2. The antenna has been successfully fabricated and tested. It has been observed that the practical results obtained by testing the fabricated antenna using Network analyzer E5071C closely matches with the theoretical results obtained by simulating the antenna design in CST MWS 2010.

This paper presents comparison of rectangular micro strip patch antenna and E-Shaped micro strip patch antenna operating at 2.45GHz. Two parallel slots are made into the basic rectangular patch design of micro strip antenna which resulted into desired E-shaped patch. The basic design consist of inset feed type and we have used dielectric substrate Fr4 epoxy whereas E-shaped patch consist of coaxial probe and RT Duroid as substrate. Both the designs have been implemented using HFSS software. On comparing the parameters of both the antenna’s design, it was observed that E-shaped patch antenna has enhanced gain and return loss, hence the antenna with enhanced parameters is considered, the better one. Keywords : Rectangular patch antenna, Micro strip patch, E-shaped patch, coaxial feed Cite this Article Priya Sharma, Shreya Ghare, Shruti Jain, Archana Tiwari. Design and Simulation of E-Shape Micro-strip Patch Antenna at 2.45GHz. Journal of Microwave Engineering & Technologies . 2020; 7(1): 17–24p.

Aim: This novel research aligns to build a Meandered monopole antenna with high gain in the frequency range of 3.0 GHz to 12.0 GHz. Materials and Methods: Group 1 is the gain and frequency of microstrip patch antenna (MPA) using Meandered rectangular monopole antenna is Group 1 with sample size (n = 26) having FR4 Epoxy substrate. The gain and frequency of the Group 2 is assigned to rectangular MPA with a sample size of 26. Results: The novel Meandered Rectangular monopole antenna has significantly higher gain of -5.45 dB to 40.35 dB than the rectangular patch antenna having gain of -4.16 dB to -8.66 dB. The innovative Meandered Rectangular monopole antenna's best frequency for highest gain had significance of roughly 0.0056 at 12.0 GHz. For rectangular shaped microstrip patch antenna, maximum gain was at the frequency of 3.0 GHz with significance of about 0.492. Conclusion: The innovative Meandered Rectangular monopole antenna gives higher augmentation of gain at 12.0 GHz range than rectangular patch antenna within the confines of this study.

This paper is presentation of designed different diodes loaded active model dissimilar geometries of micro strip patch antennas. As known, mikrostrip patch antennas have complex impedance and its impedance changes with frequency. Because of this, imaginer part of micro strip patch antennas is minimized by effect of diodes having capacitive reactance thus maximum power radiating is occurred. The aim of this project is to present different diodes loaded patch antenna for ISM 2.4 Ghz and to indicate active antenna performance according to influence of locations and dc biasing of diodes then to compare the antenna parameters of passive models. Besides, this project is used three types of diodes which are schottky Barrier diodes, silicon variable capacitance diode and tuner diode and four diodes whose are bas70, bas83, bb619 and bb721. The simulation programmer is AWR Design Environment Microwave Office 2007 (MWO) whose analysis meted is moment (Mom). Finally, the antennas that are projected are ready condition for LAN application or wireless RF receiver-transmitter systems. Return loss of designed antennas are between -25.54 dB and -36.17 dB. Gain does not change a lot but results of VSWR and Input impedance is satisfactory when comparing the passive model's results.

Planar dielectric waveguide structures, particularly planar devices for inputting and outputting electromagnetic power into free space, have found wide application in the UHF band. Among their most important characteristics are the efficiency, which is determined, in particular, by the reflection coefficient R of the surface wave which travels to the end of the planar dielectric waveguide. The connection between the efficiency and R is due to the fact that the power of the electromagnetic wave radiated into free space is proportional to the quantity (1 – | R (φ)| 2 ). Hence, it is of interest to investigate the behaviour of R as a function of the angle of incidence φ of the surface wave on the end of a planar dielectric waveguide for different frequencies and parameters of the waveguide.

This paper presents a microstrip patch antenna with frequency of 2.47 GHz with substrate of FR4 Epoxy with relative permittivity of 4.4. Due to very low cost and excellent mechanical properties it is ideal for wide range of electronic component applications. Here we have cut four rectangular corners on the patch. We have first cut one corner then we found the return loss as -15.6db and gain as 5.679.To improve the return loss and gain we did two cuts on the patch and the return loss and gain were found to be -19.2db and 7.798 resp. Again we did three cuts and finally four cuts. The design is made in HFSS software. The results obtained for four rectangular cuts are return loss is -22.38db and gain obtained is 9.01. We found out that the return loss and the gain obtained for four cuts gave the best results. Keywords: HFSS software, microstrip patch antenna, stepped cuts, WBAN application, Return loss, Gain Cite this Article Adarshita Khan, Archana R. Tiwari. Design of Rectangular Microstrip Patch Antenna for WBAN Application. Journal of Microwave Engineering & Technologies . 2020; 7(1): 25–33p.

The thermal stress response of YBa/sub 2/Cu/sub 3/O/sub 7-x/ superconducting microstrip lines on GaAs, Si, Al/sub 2/O/sub 3/ and MgO dielectric substrates was studied using the finite-element method. Detailed stress distributions near critical areas of the systems were calculated to understand the composite mechanical behavior. It is shown that the resulting stress fields are very high (large enough to cause cracking in the composite structure) for some of the dielectric materials due to the thermal expansion mismatch between the superconducting material and the dielectric substrate materials. YBa/sub 2/Cu/sub 3/O/sub 7-x/ superconducting microstrip lines in MgO displayed the best thermal mechanical properties of the four dielectric materials.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>

A wideband substrate integrated waveguide (SIW) antenna using shorted vias for 5G communications

Low profile antenna supports the activity of numerous modernized communication systems. Microstrip patch antenna represents a group of antenna which offers the capability of complete assimilation with communication system printed circuitry. We have been devised, fabricated a rectangular microstrip patch antenna and analyzed at the frequency of 2.4 GHz. By means of transmission line model it has been effectively demonstrated as to how the patch antenna can accurately modelled and analyzed by inserting microstrip line inset feed. Keywords: Microstrip Antenna, Patch, Fabrication, Analyse, Inset Feed, Dielectric Constant.

The performance and analysis of a small size, low profile and dual band quadratic Koch curve dipole antenna was introduced. The proposed antenna design, analysis and characterization had been performed using the method of moments (MoM) technique. The radiation characteristics, VSWR, reflection coefficient and input impedance of the proposed antenna were described and simulated using 4NEC2 software package, MATLAB v7.2 and NEC viewer. From the simulated results, the proposed antenna has an operating frequency of 459 MHz and 1261 MHz and at these frequencies the voltage stand wave ratio (VSWR) less than from 2.

The work is to design a 2x2 circular microstrip patch antenna array resonating at 2.4GHz and it is simulated for Wireless Sensor Network (WSN) applications by using HFSS tool. Circular patch antenna array is designed by depositing circular patches on FR-4 Epoxy substrate and is fed using microstrip feed lines. Fabricated antenna resonates at 2.391GHz. Antenna parameters such as Gain, return loss, Voltage Standing Wave Ratio (VSWR), Directivity, Reflection coefficient and radiation pattern are analyzed. 2x2 circular microstrip patch antenna produces more gain and less return loss compared to 2x2 rectangular microstrip patch antenna. The compact size and higher directivity compared to rectangular array makes it more relatively useful for WSN applications.

Enhancement of reflection coefficient for circular ring microstrip sensor

This paper designs, simulates, and analyzes the S-band microstrip patch antenna (MPA) for wireless applications. FR-4 (lossy) and Rogger RT/duroid, whose dielectric permittivity is 4.3 and 2.2, respectively, have been used as substrate materials. Simulation is done by computer simulation technology (CST) suite studio 2019 software. Simulations with FR-4 material showed that the return loss was -20.405 dB, the gain was 2.592 dB, the directivity was 7.47 dBi, the voltage standing wave ratio (VSWR) was 1.221, the bandwidth (BW) was 0.0746 GHz, and the efficiency was 34.69%. Also, Rogers RT/duroid material gives results of a return loss of -12.542 dB, a bandwidth (BW) of 0.0349 GHz, a gain of 8.092 dB, a directivity of 8.587 dBi, and an efficiency of 94.24%. The main goal of this antenna is to have a low return loss while getting as close as possible to a VSWR of 1. This will improve the antenna's gain, directivity, and efficiency compared to other antennas. Copper was used to make the patch and the ground, which were 0.35 mm and 0.0077 mm thick, respectively. The results obtained from the proposed antenna were better than those previously published in various in modern scientific journal and conference papers.

In this paper, we discuss the process to fabricate a microstrip patch antenna by using graphene as a substrate material. Ours is the age of modern technology. Wireless communication is one of them. In wireless communication, graphene is widely used in the twenty-first century. Microstrip patch antenna provides better performance and better anticipation compared to other antennas. Microstrip patch antennas are more preferable compared to others because of their low cost, small size, and high performance. The graphene has a reconfigurable surface conductivity that can be tuned to operate at the desired frequencies. The main concept we focus on here to locate the best feed point of a microstrip patch antenna. This paper represents a graphene-based microstrip patch antenna. It has a 2.45 GHz resonant frequency for wireless communication. Here we use CST STUDIO SUITE 2017 software for designing and simulation our antenna. It shows the voltage standing wave ratio (VSWR), return loss, H-plane radiation pattern, and input impedance. The simulation output result shows a gain 6.801 dB and directivity of 7.302 dBi. It has return loss -23.673dB. Finally, we build up a design process of a graphene-based microstrip patch antenna.