Inset-fed Microstrip Patch Antenna Research Articles

Inset-FED microstrip patch antenna for glucose detection using label-free microwave sensing mechanism

Inset-FED microstrip patch antenna for glucose detection using label-free microwave sensing mechanism

Dual Band Antenna Design and Prediction of Resonance Frequency Using Machine Learning Approaches

An inset fed-microstrip patch antenna (MPA) with a partial ground structure is constructed and evaluated in this paper. This article covers how to evaluate the performance of the designed antenna by using a combination of simulation, measurement, creation of the RLC equivalent circuit model, and the implementation of machine learning approaches. The MPA’s measured frequency range is 7.9–14.6 GHz, while its simulated frequency range is 8.35–14.25 GHz in CST microwave studio (CST MWS) 2018. The measured and simulated bandwidths are 6.7 GHz and 5.9 GHz, respectively. The antenna substrate is composed of FR-4 Epoxy, which has a dielectric constant of 4.4 and a loss tangent of 0.02. The equivalent model of the proposed MPA is developed by using an advanced design system (ADS) to compare the resonance frequencies obtained by using CST. In addition, the measured return loss of the prototype is compared with the simulated return loss observed by using CST and ADS. At the end, 86 data samples are gathered through the simulation by using CST MWS, and seven machine learning (ML) approaches, such as convolutional neural network (CNN), linear regression (LR), random forest regression (RFR), decision tree regression (DTR), lasso regression, ridge regression, and extreme gradient boosting (XGB) regression, are applied to estimate the resonant frequency of the patch antenna. The performance of the seven ML models is evaluated based on mean square error (MSE), mean absolute error (MAE), root mean square error (RMSE), and variance score. Among the seven ML models, the prediction result of DTR (MSE = 0.71%, MAE = 5.63%, RMSE = 8.42%, and var score = 99.68%) is superior to other ML models. In conclusion, the proposed antenna is a strong contender for operating at the entire X-band and lower portion of the Ku-band frequencies, as evidenced by the simulation results through CST and ADS, it measured and predicted results using machine learning approaches.

Novel Design of Highly Directive Mictrostrip Patch Antenna with Air Substrate

This paper presents a novel design and analysis of inset fed microstrip patch antenna with an air substrate operating at 2.4 Ghz. The proposed antenna has a high directivity and high radiation efficiency which are 2 important parameters in antennas for communications, radars, wireless power transmission and other applications. The S parameters, VSWR, Directivity, gain, beamwidth, radiation efficiency, electric field intensity and size of the design are presented. Ansys HFSS was used for the study. Small amounts of FR4 material was also used.

Inset-fed microstrip patch antenna for ubiquitous wireless communication applications

Inset-fed microstrip patch antenna for ubiquitous wireless communication applications

Inset-fed microstrip patch antenna for ubiquitous wireless communication applications

This paper presents an inset-fed microstrip patch antenna for ubiquitous wireless communication applications. The studied design is comprised of an inset-fed rectangular radiator and a partial ground plane and is printed on an FR4 microwave substrate. The measured results reveal that the fabricated prototype achieved a good impedance bandwidth of 1.78 GHz (2.02 GHz-3.8 GHz) and is able to cover well-established narrow-bands including ISM, IMT, Wi-Fi, Bluetooth, WiMAX, WLAN and 3.5 GHz for sub-6 GHz 5G communication system. Moreover, it achieved a maximum gain of 5.14 dBi, a maximum efficiency of 94.16% and exhibits stable radiation patterns which make it a suitable candidate to be used in narrow-band wireless communication services.

Design of Radio Over Plastic Optical Fibre for Broadband Indoor Access Network

Indoor wireless traffic increases exponentially. Radio over fibre technology has been used to provide broadband services in the access network. Plastic Optical Fibre (POF) has been considered as a promising waveguide to be used as backhaul link for indoor access network. The RoF system uses an improved POF cable as a backhaul. A photonic antenna is developed by integrating a microstrip patch antenna with an opto-electronic converter. A standard inset fed microstrip patch antenna used for the wireless transmission and reception is designed using CST software tool. A RoF communication system based on the developed POF is designed and simulated using Optisystem software tool. The Bit Error Rate (BER) performance of the system in terms of Quality factor is evaluated. A maximum achievable POF cable length of 117 m for an On-Off Keying (OOK) transmission data rate of 1 Gbps with an acceptable Quality factor of 7.0 is obtained. When the developed RoF system was used to transmit 10 Gbps and 50 Gbps data, the achievable cable lengths reduced to 80 m and 63 m, respectively. Keywords— Plastic Optical Fibre, RoF, photonic antenna, and modal dispersion

Detection of breast tumor using inset-fed microstrip patch antenna at MICS band for implantable applications

Detection of breast tumor using inset-fed microstrip patch antenna at MICS band for implantable applications

Novel hybrid metamaterial to improve the performance of a beamforming antenna

This paper investigates the design and implementation of a novel hybrid metamaterial unit cell to improve a beamforming Wi-Fi antenna’s performance. The proposed metamaterial unit cell is created on an FR-4 substrate (εγ = 4.4) and a thickness of 1.6 mm. The metallization height of the unit cell is maintained at 0.035 mm. The designed metamaterial unit cell is simulated using HFSS Ver. 18.2 to verify the double negative behaviour. The unit cell consists of five Split Ring Resonators (SRR’s) at the bottom and a hexagonal ring of six triangles. Initially, a conventional inset fed microstrip patch antenna is designed then an array of the proposed unit cell is created and used as a superstrate to study the performance. A Three Element Antenna Array (TEAA) is designed to operate at 2.4 GHz Wi-Fi band, and the superstrate created out of the proposed unit cell is used to study its effect. Metamaterial superstrate improved the conventional Single Element Antenna (SEA) gain by approximately 2 dB. Superstrate with TEAA exhibited an improved gain of 1 dB over TEAA.

Slitted inset fed butterfly-shaped microstrip patch antenna

In this paper, the design, and simulation of a High-Frequency Slitted Butterfly-shaped Inset Fed Microstrip Patch Antenna is studied. As its name says, the butterfly-shaped antenna is introduced with symmetric indentations at the top, bottom, and sides. Excitation was used at the bottom point of the antenna with inset and via feeding. An input match (S11) of -34.48 dB at the resonance frequency of 26.35 GHz with an electric field phi-polarized gain of 7.37 dB was obtained. Cross polarization level (electric field theta-polarized) is -20 dB. The 26 GHz band covers the 3.25 GHz of the spectrum between 24.25 GHz and 27.5 GHz and is being prioritized across Europe as the first high-frequency band for 5G. This high-frequency spectrum (known as ‘mmWave spectrum’), offers very high data capacity and speeds but with a limited range [1].

Parallel-plate waveguide model adopted to perform inset-fed rectangular microstrip patch antenna for Wi-Fi application

ABSTRACTInset-fed rectangular microstrip patch antenna is performed using parallel-plate waveguide model. Quasi-Transverse Electromagnetic (TEM) modes approximation is presented and validated to establish the electromagnetic field distribution susceptible to be supported by the guided structure modelling the considered antenna. Input impedance calculation based on the electromagnetic theory in travelling-wave in conjunction with the field distribution elaborated in quasi-TEM mode approximation is carried out. Magnetostatic approach solution is used to analyse electric field radiation properties of the proposed antenna. Some relevant antenna performances such as impedance bandwidth of , gain of and half power beam-width of have been achieved and good agreement with the theoretic predictions has been illustrated.

A Compact Elliptical Microstrip Patch Antenna for Future 5G Mobile Wireless Communication

In this paper an elliptical inset fed microstrip patch antenna is proposed for future fifth generation (5G) mobile communications. The antenna is mounted on a compact Fr-4 substrate having dimensions 5 X 5 X 1.6 mm 3 with relative permittivity (e r) 4.4.The antenna is simulated in the HFSS software and the simulated results shows that it is operating at 28 GHz for reflection coefficient (S 11) below-10dB and has relatively stable radiation pattern.

Miniaturisation of microstrip patch antenna using an artificial planar magneto‐dielectric meta‐substrate

In this communication, a practically realisable artificial planar magneto-dielectric (MD) meta-substrate is proposed and investigated for microstrip patch antenna miniaturisation. The meta-substrate employs cross-coupled twisted metallic split-ring resonator ring pairs to achieve effective permeability ( μ eff ) and permittivity (e eff ) greater than that of the host dielectric which leads to antenna miniaturisation. Electromagnetic simulation and analysis of effective material parameters are performed to characterise it, which shows nearly equal enhanced effective permeability and permittivity ( μ eff ≃ e eff ) at 2.35 GHz with low loss-factor level not achievable from natural materials. An inset fed microstrip patch antenna is designed on the proposed MD meta-substrate to test and validate its performance. The performances of the miniaturised patch antenna loaded with proposed dispersive MD meta-substrate, non-dispersive homogenous MD substrate, and high-permittivity substrates (lossy and loss-free) are compared with the conventional patch antenna on host dielectric. It is found that dispersive nature of the meta-substrate plays a critical role in the antenna performance. The antenna on proposed meta-substrate occupying an overall volume of 0.250 λ 0 × 0.344 λ 0 × 0.009 λ 0 at 2.35 GHz is 74.83% miniaturised as compared with the conventional antenna on host dielectric. To ensure the practicability, the designed antenna is fabricated and measured.

Design of Ka-Band Inset-Fed Conical Conformal Patch Antenna

Conical conformal microstrip patch antenna is very important in wireless communication and microwave instrument. In this paper, a Ka-band rectangular inset-fed microstrip patch antenna which conforms to a conical surface has been designed, the specific designed method and parameters were given. Then a conical conformal microstrip antenna is simulated by CST, the difference between planar antenna and conical conformal antenna has been discussed, and the effect of surface curvature on conical conformal antenna resonant frequency of has been analyzed.

Harmonics blocking in the inset fed microstrip patch antenna using cascaded defected microstrip structure

In this article a cascaded defected microstrip structures (CDMS) is proposed as the feed line of an inset patch microstrip antenna. Using this feed line, the effective radiation is improved; the higher order harmonics are completely suppressed, the size of antenna is about 10% reduced and also the front-to-back ratio parameter is greatly improved. In comparison to a conventional microstrip patch antenna without the CDMS, the radiated power of the CDMS patch antenna at harmonic frequencies even up to the 4th harmonic has been drastically decreased. © 2010 Wiley Periodicals, Inc. Int J RF and Microwave CAE, 2010.

A design rule for inset-fed rectangular microstrip patch antenna

In our paper, an inset-fed microstrip patch antenna has been designed and the dependency of resonant frequency on the notch gap and the feed line geometry has been studied. Our study suggests that ...