scholarly journals Iterative Analysis of Dielectric Constant of Patch Antenna Substrate at UHF Band

2018 ◽  
Vol 7 (2.16) ◽  
pp. 7
Author(s):  
Amish Kumar Jha ◽  
Bharti Gupta Gupta ◽  
Preety D Swami
Keyword(s):  
Dielectric Constant ◽  
Material Properties ◽  
Patch Antenna ◽  
Dielectric Materials ◽  
Substrate Material ◽  
Frequency Range ◽  
Shape Model ◽  
Iterative Analysis ◽  
Working Frequency ◽  
Simulation Results

This paper presents an investigation of effect of substrate material properties on the performance of antenna. The simulations are tested for 30 different dielectric materials on the basic RPA antenna model as well as on the most common U shape model using CST Microwave Studio. Two designs are proposed. On the basis of simulation results it has been concluded that for the first design the best material is which has a dielectric constant of 2.7 (𝜀r = 2.7) with bandwidth improvements of around 69.33% to 88.6% as compared to the most frequently used materials at present. For the second design the best result is obtained for the material that has dielectric constant in the range 2.0 to 2.7.  For a material having dielectric constant of 2.1 (𝜀r = 2.1) bandwidth improvement of around 11.74% with respect to RT Duroid was observed. For the second design, radiations from all other materials were not available in the working frequency range of 1GHz to 6GHz.  

Fan Shaped Patch with Fan Shaped Defected Ground Structure is designed for X-band Applications

2018 ◽  
Vol 8 (4) ◽  
pp. 57
Author(s):  
K.S. Ravi Kumar ◽  
Lalbabu Prasad ◽  
B. Ramesh ◽  
K.P. Vinay
Keyword(s):  
Dielectric Constant ◽  
Low Cost ◽  
Dielectric Substrate ◽  
Substrate Material ◽  
Frequency Range ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Band Region ◽  
X Band ◽  
Simulation Results

In this novel work a simple Fan Shaped Patch (FSP) Antenna is designed for X-band applications using Fan Shaped DGS structure to improve the Bandwidth and Gain. The Antenna is designed by using low cost FR4 Epoxy dielectric substrate material having dielectric constant of 4.4 with size 31.4x28.33x1.6mm3. The Antenna is simulated by using CST MW studio2014 software to analyze the results. The simulation results shows reasonable |S11|<-10 for the frequency range over 8.38 to 11.59GHz in X-band region.

scholarly journals Circle Microstrip Antenna Simulation for Frequency 3.5 GHz

2021 ◽  
Vol 1 (1) ◽  
pp. 1-4
Author(s):  
Wildan Wildan ◽  
Dwi Astuti Cahyasiwi ◽  
Syah Alam ◽  
Mohd Azman Zakariya ◽  
Harry Ramza
Keyword(s):  
Dielectric Constant ◽  
Patch Antenna ◽  
Microstrip Antenna ◽  
Microstrip Line ◽  
Return Loss ◽  
Tangent Loss ◽  
Substrate Thickness ◽  
Total Radiation ◽  
Circular Patch Antenna ◽  
Working Frequency

This research proposed microstrip circular patch antenna simulation at a working frequency 3500 MHz. The antenna has been designed using a Duroid RT5880 substrate with dielectric constant (εr) = 2.2, substrate thickness (h) = 1.575 mm, and tangent loss = 0.0009 with microstrip line feeding. The simulation result, return loss value obtained -26.385, VSWR value 1.09, gain value 7.64 dBi, total radiation efficiency value -0.6489 dB, and bandwidth value 72 MHz (3468.8 MHz – 3541.9 MHz).

scholarly journals A t-shaped partial ground microstrip patch antenna based UHF sensor for partial discharge detection

2020 ◽  
Vol 20 (2) ◽  
pp. 704
Author(s):  
Nayli Adriana Azhar ◽  
Norazizah Mohd Aripin ◽  
Goh Chin Hock ◽  
Nayla Ferdous ◽  
Saidatul Hamidah
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Partial Discharge ◽  
Signal Strength ◽  
Substrate Material ◽  
Microstrip Patch Antenna ◽  
Microstrip Patch ◽  
Preventative Measures ◽  
Design Requirements ◽  
Simulation Results

Continuous partial discharge (PD) monitoring and early PD detection is important in making sure the necessary preventative measures can be taken accordingly. This paper proposed a T-shaped partial ground microstrip patch antenna that is able to detect PD signal within the UHF range. The antenna was designed and simulated using CST Microwave Studio. The antenna was then fabricated using FR4 substrate material and tested for reception test. The simulation results and the analysis from the fabricated antenna confirmed that the proposed antenna able to detect PD signal at UHF range (specifically at about 500 MHz) and fulfilled the design requirements in terms of the return loss, VSWR, bandwidth and gain. Reception test had confirmed that the proposed antenna was able to detect PD signals that are located at maximum distance, ranges from 37 cm to 70 cm (depending on the PD signal strength). The proposed antenna also had succesfully detected PD occurances at 300 MHz to 700 MHz. In conclusion, the proposed T-shaped partial ground microstrip patch antenna had been successfully designed and able to detect PD signal emitted in the UHF range.

scholarly journals The Improved Radiations in Planar Microstrip Patch Antenna using Linear Slot Etched Ground Plane

2020 ◽  
Vol 8 (6) ◽  
pp. 123-127
Keyword(s):  
Dielectric Constant ◽  
Resonant Frequency ◽  
Patch Antenna ◽  
Ground Plane ◽  
Dominant Mode ◽  
Microstrip Patch Antenna ◽  
Microstrip Patch ◽  
Rectangular Microstrip Patch Antenna ◽  
Simulation Results ◽  
Good Agreement

Radiations improvement in a probe fed rectangular microstrip patch antenna using linear slot etched ground plane is proposed. Conventional MPA is designed using Glass Epoxy FR4 substrate. Substrate has dielectric constant 4.4 and its thickness 1.6 mm, operated at resonant frequency 3.05 GHz. The proposed method is simple and easy to etch on a substrate. This will suppress cross-polarized (XP) radiation field only without disturbing the dominant mode and co-polarized radiations. The concept has been tested using HFSS tool and verified its results experimentally. The experimental results show a good agreement with the simulation results.

scholarly journals Multiband Microstrip Patch Antenna for 5G Applications using DGS Technique

2021 ◽  
Vol 9 (VI) ◽  
pp. 4796-4801
Author(s):  
G Naga Shashank
Keyword(s):  
Dielectric Constant ◽  
Epoxy Resin ◽  
Patch Antenna ◽  
Ground Plane ◽  
Relative Dielectric Constant ◽  
Microstrip Patch Antenna ◽  
Ka Band ◽  
Software Simulation ◽  
Microstrip Patch ◽  
Simulation Results

In this article, a multiband microband antenna fed by a microband feeder is proposed, with a total area of 30x24x1.6 mm ^ 3 [1]. The planned antenna is printed on the FR4 epoxy resin substrate with a relative dielectric constant of 4.4 [2]. The multiband characteristics are produced by the differently shaped grooves used in the ground plane. The antenna covers two frequency bands, 24.0 GHz to 24.53 GHz, for K-band applications, and 26.7 GHz to 27.6 GHz, for Ka-band applications [3] [4]. The prototype of the expected antenna is planned and measured in advance. Ansys HFSS software simulation results are consistent with measurement result.

scholarly journals Design of Compact BranchlineBalun

2020 ◽  
Author(s):  
Indhumathi J ◽  
Maheswari S
Keyword(s):  
Dielectric Constant ◽  
Phase Difference ◽  
Transmission Lines ◽  
Substrate Material ◽  
Size Reduction ◽  
Frequency Range ◽  
Branch Line ◽  
Reduction Techniques ◽  
Shape Structure ◽  
Phase Differences

This paper present the compact branch line balun to operate at the frequency range of 2.4GHz. The compact branchlinebalun is designed using the substrate material with the dielectric constant of FR4 material. The proposed balun is designed using different transmission lines. Thus the balun should achieves -3dB power division and 1800 phase differences between the outputs. The main objective of this design focuses on size reduction. To reduce the size, A balun is realized using the equivalent T-shape structure. After the reduction techniques the implemented size of the balun is 29.41x44.32 mm2 achieves 35% of size reduction. Thus the measured S11 are -23 dB and the S21,S31 remains -3dB and provide 1790 phase difference between the outputs at the frequency of 2.4GHz.

Design and Analysis of EBG Antenna for Wi-Fi, LTE, and WLAN Applications

2020 ◽  
Vol 35 (9) ◽  
pp. 1030-1036
Author(s):  
Pronami Bora ◽  
Pokkunuri Pardhasaradhi ◽  
Boddapati Madhav
Keyword(s):  
Patch Antenna ◽  
High Frequency ◽  
Parametric Analysis ◽  
Coplanar Waveguide ◽  
Substrate Material ◽  
Maximum Efficiency ◽  
Electromagnetic Band Gap ◽  
High Frequency Structure Simulator ◽  
Antenna Performance ◽  
Simulation Results

A non-planar electromagnetic band gap (EBG) structured antenna is proposed in this paper for wireless communication applications. The proposed design consists of coplanar waveguide (CPW) fed square patch antenna embedded with triangular EBG backing on FR-4 substrate material for 2.4 GHz (Wi-Fi, LTE) and 5.2 GHz (WLAN) applications. Gain is improved from 2.8 dB to 13.9 dB by adding EBG structure in the proposed antenna and the parametric analysis is done for optimizing the antenna performance characteristics. The proposed antenna provides a maximum efficiency of 82.5% in the resonating frequencies. The prototyped antenna is having good correlation with the simulation results obtained from Finite Element Method (FEM) based Anyss-HFSS. High Frequency Structure Simulator is used to analyze the antenna parameters and the simulated and measured results are correlating well with each other with a slight change in frequencies.

scholarly journals Tunable microstrip liquid crystals patch antennas

2021 ◽  
Vol 1198 (1) ◽  
pp. 012010
Author(s):  
N A Romanov ◽  
T A Chimytov ◽  
A V Nomoev ◽  
E Ch Khartaeva ◽  
E A Gurvitz
Keyword(s):  
Dielectric Constant ◽  
Liquid Crystals ◽  
Magnetic Nanoparticles ◽  
Phase Shift ◽  
Patch Antenna ◽  
High Frequency ◽  
Dielectric Anisotropy ◽  
Slight Variation ◽  
Patch Antennas ◽  
Frequency Range

Abstract A patch antenna based on liquid crystals for the5G GHz range was simulated. The variation of the antenna frequency range after doping magnetic nanoparticles was verified. The high-frequency patch antenna parameters are calculated considering the dependence of the reflectivity of the antenna 11 on the dielectric anisotropy, gain, directivity and phase shift. The ability to control the frequency range of the patch antenna is shown. The phase distributions were demonstrated for 5CB crystals with a slight variation in the dielectric constant tensor and crystals with magnetic permeability.

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.

scholarly journals Nickel Particle-Based Compact Flexible Antenna for Modern Communication Systems

Electronics ◽  
2019 ◽  
Vol 8 (7) ◽  
pp. 787 ◽  
Author(s):  
Md. Atiqur Rahman ◽  
Mohammad Rashed Iqbal Faruque ◽  
Eistiak Ahamed ◽  
Mohammad Tariqul Islam ◽  
Mandeep Singh
Keyword(s):  
Dielectric Constant ◽  
Communication Systems ◽  
Degrees Of Freedom ◽  
Raw Materials ◽  
Flexible Substrate ◽  
Nickel Particle ◽  
Dielectric Materials ◽  
Substrate Material ◽  
Nickel Aluminate ◽  
Flexible Antenna

A flexible antenna is a significant part of the new generation of wireless communication systems. Conventional antennas are typically fabricated on available FR-4 and RT/Duroid dielectric materials, where the dielectric constant cannot be selected arbitrarily and the degrees of freedom in designing the antenna are limited, whereas our flexible substrate offers moderate dielectric values by changing the concentration of the raw materials. Synthesised nickel particle-based flexible nickel aluminate (NiAl2O4) is utilized as a substrate material to make an effective antenna for microwave applications. The nickel aluminate substrate was made with 42% concentration of nickel, and has a dielectric constant of 4.979 and a thickness of 1 mm. The fabricated flexible antenna shows measured bandwidth from 6.50–8.85 GHz. On the other hand, the maximum measured gain and efficiency was 4.75 dBi and 91%, respectively. Finally, that antenna has directional radiation patterns and the presented antenna has a novelty where the nickel aluminate substrate was used for the first time. Thus the compactness of the antenna and its performance with a flexible nature makes it a worthy one to be used in the C-band application.

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