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[IEEE 2018 International Conference on Wireless Communications, Signal Processing and Networking (WiSPNET) - Chennai (2018.3.22-2018.3.24)] 2018 International Conference on Wireless Communications, Signal Processing and Networking (WiSPNET) - A Broadband Circularly Polarized Microstrip Patch Antenna for X-Band Applications
摘要： This paper presents a broadband circularly polarized microstrip patch antenna. The proposed antenna is designed using an octagonal patch, finite ground plane with L shaped slot and two L shaped strips placed orthogonal to each other. By utilising the strips, Broadband, Axial Ratio bandwidth (ARBW) is achieved. From simulated results, impedance bandwidth (?10 dB) is 5.8 GHz (9.8 GHz–15.6 GHz) and AR bandwidth (3 dB) of the antenna is 7.3 GHz (8.7 GHz–16 GHz). The antenna is proposed with a simple structure and broadband circularly polarized, which is used widely for X-Band applications.
关键词： Broadband,polarization,Axialratio BW(ARBW),Microstrip patch Antenna
更新于2025-09-23 15:22:29
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PERFORMANCE IMPROVEMENT OF PATCH ANTENNA USING CIRCULAR SPLIT RING RESONATORS AND THIN WIRES EMPLOYING METAMATERIALS LENS
摘要： In this paper, the left-handed metamaterial which acts as a lens is employed to improve the performance of a microstrip patch antenna. The left-handed metamaterial used in this work is a three-dimensional periodic structure which consists of circular split ring resonators and thin wires. The three-dimensional periodic metamaterial structure shows angular independency characteristics in wide range angles, so it acts as a metamaterial lens. However, the MTM structure in?nite periodicity truncation has no impacts on the MTM lens scattering, e?ective parameters and homogeneity. The left-handed metamaterial is placed in front of the microstrip patch antenna and due to the negative refractive index property of the left-handed metamaterial; the radiated electromagnetic beam size decreases which results in a highly focused beam. The proposed antenna has been designed and simulated using CST microwave studio, and the metamaterial e?ective parameters are extracted from the S parameters by using Nicolson-Ross-Weir algorithm and by selecting the appropriate ambiguity branch parameter. Furthermore, the angular independency of the metamaterial lens has been veri?ed by rotating the metamaterial structure with respect to the excitation probe of the transverse electromagnetic waves and extracting the S-parameters and the e?ective parameters for each rotation angle. A parametric analysis has been performed to study the e?ects of the patch antenna and left-handed metamaterial lens separation and the size of the three-dimensional left-handed metamaterial structure on the radiating properties and the impedance matching of the proposed antenna. For the experimental veri?cation, the proposed antenna operating at 10 GHz is fabricated; the return loss, radiation pattern and gain for the proposed antenna with and without metamaterial are measured. Furthermore, the results show that the antenna gain is improved by 4.6 dB which validates the concept of beam focusing using negative refractive index metamaterial structure, while the return loss and bandwidth are slightly reduced. The simulation and experiment investigated the idea of the beam focusing using negative refractive index metamaterial lens in microwave regime.
关键词： microstrip patch antenna,CST microwave studio,beam focusing,Nicolson-Ross-Weir algorithm,parametric analysis,left-handed metamaterial,circular split ring resonators,negative refractive index,angular independency,experimental verification,thin wires
更新于2025-09-23 15:21:01
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Development of a Flexible Tunable and Compact Microstrip Antenna via Laser Assisted Patterning of Copper Film
摘要： Design and rapid prototyping of a tunable and compact industrial, scientific and medical (ISM) band microstrip antenna for applications is presented in this paper. Laser machining is introduced as a fast and accurate method for the antenna fabrication. The antenna, with an overall dimension of 65 × 46 × 0.127 mm, was fabricated by sandwiching a flexible Kapton polyimide substrate, with a dielectric constant of 3.5, between two flexible copper tapes, as the radiating patch and ground plane, respectively. The radiating patch was patterned in a meander configuration, with three slots, demonstrating the capability to reduce the resonant frequency of the microstrip antenna from 2.4 GHz to 900 MHz, without increasing the overall size of the antenna (87% compact). The effect of mechanical stress on the antenna performance was investigated by performing bend and stretch tests. The antenna was subjected to compressive bend with a minimum radius of curvature of 86 mm and 150 mm along the x- axis and y- axis which resulted in a maximum increase of resonant frequency by 3.1% and 1.3%, respectively. Similarly, the antenna was subjected to tensile bend with a minimum radius of curvature of 79 mm and 162 mm along the x- axis and y- axis which resulted in a maximum decrease of the resonant frequency by 4.2% and 0.3%, respectively. An overall 0.9% decrease in the resonant frequency was measured for an applied strain of 0.09% during stretching the antenna along the y- axis.
关键词： mechanical stress,flexible Kapton substrate,Compact tunable antenna,microstrip patch antenna,laser machining
更新于2025-09-23 15:19:57
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[Lecture Notes in Electrical Engineering] Recent Trends in Communication, Computing, and Electronics Volume 524 (Select Proceedings of IC3E 2018) || Notch-Loaded Patch Antenna with Multiple Shorting for X and Ku Band Applications
摘要： A compact two notch-loaded patch antenna with multiple shorting pins for X and Ku band applications is presented. Two different substrates FR-4 and RT Duroid 5880 are used to compare the antenna characteristics. Multiple shorting pins are used to enhance the bandwidth and gain of antenna. Volume of the proposed antenna is 785 mm3, and it resonates at 10.5 GHz and 14.65 GHz with impedance bandwidth of 10.2% and 6.49% and gain of 7.42 dBi and 12 dBi, respectively. This antenna is useful for X band and Ku band applications.
关键词： X and Ku band,Microstrip patch antenna (MSA),Multiple shorting pins,Notch loaded
更新于2025-09-23 15:19:57
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STEPPED SLOT PATCH ANTENNA WITH COPPER GROUND PLANE AND SOLAR CELL GROUND PLANE FOR FUTURE MOBILE COMMUNICATIONS
摘要： A new structure design of a multi-band suspended stepped slot microstrip patch antenna with copper ground plane for future mobile communications is proposed and presented. A parametric study for the e?ect on the proposed antenna is done on a par with the integration of a polycrystalline silicon solar cell. The compact low pro?le proposed antenna is developed using Printed Circuit Board (PCB) technology on a substrate, FR4 with physical size of 50 × 50 mm2. Simulated and measured results are presented to validate the usefulness of the proposed antenna structure for Wi-Max and future mobile communications. The measured result reveals that the presented stepped slot patch antenna with copper ground plane o?ers impedance bandwidth of 3.94% (covering 5.46 GHz–5.68 GHz band), 3.06% (covering 7.08 GHz–7.3 GHz band), and 9.26% (covering 8.34 GHz–9.15 GHz band). The same radiating patch with solar ground plane o?ers impedance bandwidth of 4.58% (covering 5.12 GHz–5.36 GHz band) and 3.06% (covering 7.32 GHz–8.02 GHz band) for future mobile communications. Good VSWR and radiation pattern characteristics are obtained in the frequency band of interest.
关键词： future mobile communications,copper ground plane,suspended stepped slot microstrip patch antenna,multi-band,solar cell ground plane
更新于2025-09-19 17:13:59
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[IEEE 2019 6th International Conference on Space Science and Communication (IconSpace) - Johor Bahru, Malaysia (2019.7.28-2019.7.30)] 2019 6th International Conference on Space Science and Communication (IconSpace) - Koch Fractal Loop Circular Polarization (CP) Antenna Integrated with Solar Cells
摘要： Minimal profile antennas for wireless devices which characteristics consisted of being low cost, highly reliable, and lightweight, it bears a new challenge for the design of the antenna in wireless communications. In this paper, we propose a design of circularly polarized microstrip patch antenna integration with solar cells for green wireless applications. Two techniques have been proposed to form the prototype between the communication system (design of antenna) and solar panel (solar cell). Both methods will face two issues generally; the solar system needs to get 100% sunlight and the magnetic field produced by radio communication systems as well as the electric field produced by solar cells should not affect the efficiency. The antenna is composed of a Koch fractal loop patch and the substrate is employed using a transparent material. This enables the light to pass through with high efficiency to illuminate the solar panel cells while the RF performance is maintained with minimal degradation. The communication frequency measures 2.6, 3.5 and 4.4 GHz. CST MWS simulation is also studied and compared among the different substrates which show different results based on the same parameters, which is implemented with a lattice of 2×2 square solar cells. With this arrangement, the solar cells will be able to obtain 100% of sunlight exposure. The characteristics of the broadband are achieved by combining resonances and the minimum axial ratio points created by the driven patch and solar cell surface.
关键词： Trade-off RF transparency,Wireless communication,transparent substrate,Microstrip patch antenna,Compact Meshed patch antenna,integration antenna and solar panel,CST MWS,performances and Frequency,Gain
更新于2025-09-12 10:27:22
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[IEEE TENCON 2019 - 2019 IEEE Region 10 Conference (TENCON) - Kochi, India (2019.10.17-2019.10.20)] TENCON 2019 - 2019 IEEE Region 10 Conference (TENCON) - Analysis of Graphene Based Planar Antennas for Terahertz Application
摘要： The present work attempts to design graphene based plasmonic printed dipole and patch antenna resonating at 1 THz. These antennas are compared with their metal versions to bring out the reduction in the antenna length. The antenna parameters such as return loss and radiation pattern are studied and verified with the standard results of the metal counterpart.
关键词： Microstrip Patch antenna,Dipole antenna,Graphene,Surface Plasmon Polariton (SPP)
更新于2025-09-12 10:27:22
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Design and Analysis of Alphabetical Slots of Patch Antenna for Mobile Optical Communication at 60?GHz
摘要： In the last decade, huge development has been seen in the field of wireless communication. The performance depends on the shape and size of the antenna. The future aim of wireless communication is to provide data with high speed data range even in harsh geographical areas. Here aim is to design and compare the E and H slot, T-slot, O-slot and U-slot antenna. The designed patch antenna operates at a frequency of 60 GHz with maximum antenna gain and minimum radiation loss using high frequency structure simulator (HFSS). We will use Rogers RT/duroid 5880 as substrate due to its suitable mechanical and insulating properties. Resonant frequency used will be 60 GHz and height will be 1.6 mm, 1.57 mm, 1.6 mm and 0.508 mm for E and H slot, T-slot, O-slot and U-slot, respectively.
关键词： dielectric constant,millimeter frequency,microstrip patch antenna,substrate
更新于2025-09-11 14:15:04
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[Lecture Notes in Electrical Engineering] Engineering Vibration, Communication and Information Processing Volume 478 (ICoEVCI 2018, India) || Design of an Energy Harvesting System for Wireless Power Transmission Using Microstrip Antenna
摘要： Power supply drives technological devices. As the wired world looks long antiquated, it is imperative transition towards wireless power transmission (WPT). WPT has been lately enticing in a varying range of applications in numerous ?elds and has also become a very alluring area of research activity because of the potential it has in providing solutions to our daily requirement, so the need arises to delve into it to explore new, innovative and ef?cient means of energy transmission. WPT will be indispensable in the imminent future, as this technology assists in the transmission of electrical energy to any device from the power source using air as the transmission medium without the use of any conductors. In this paper, an energy harvesting device is proposed to convert ambient electromagnetic waves, predominantly from the 2.4 GHz ISM radio frequency (RF) channel into direct current (DC) electricity. A microstrip antenna is designed along with a booster circuit to help charge devices wirelessly. This novel technology could be used for charging phone batteries on-the-go, thereby eliminating the hassles of wired connections.
关键词： Rectenna,Wireless power transmission,Energy harvesting,Wireless charging,Microstrip patch antenna
更新于2025-09-10 09:29:36
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[IEEE 2018 International Conference On Advances in Communication and Computing Technology (ICACCT) - Sangamner, India (2018.2.8-2018.2.9)] 2018 International Conference On Advances in Communication and Computing Technology (ICACCT) - Mutual Coupling Reduction Using Double Negative Metamaterial Based Dual-Line Split-Ring Resonator (DLSRR) Arrays in Microstrip Patch Antenna Arrays for L-Band and X-Band Applications
摘要： A double negative metamaterial based dual-line split-ring resonator (DLSRR) array is proposed in this paper to mitigate mutual coupling between coplanar elements of 1 × 2 microstrip patch arrays operating at frequencies of 10 GHz (for X-band Application) and 1.575 GHz (for L-band Application). The edge-to-edge spacing between the patches is 0.2λ0 at 10 GHz and 0.1λ0 at 1.575 GHz. The metamaterial decoupling structure comprises of an array of SRRs connected at the corners by two vertical lines and is introduced in between the elements of 1 × 2 arrays. Simulation results show mutual coupling reductions of 7 dB at 10 GHz and 13.2 dB at 1.575 GHz with no noticeable changes in the gain. The validation of simulation results for the array operating at 10 GHz is done using experimental measurements.
关键词： microstrip patch antenna array.,mutual coupling,Dual-line split ring resonator (DLSRR),isolation,Double Negative (DNG)
更新于2025-09-10 09:29:36