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Growth of pure and BFO doped KCl crystals by Czochralski technique and fabrication of microstrip patch antenna for GHz applications
摘要： Large sized pure and 0.1 mol% BiFeO3 (BFO) doped KCl single crystals were grown by Czochralski technique. Structural parameters were confirmed by powder XRD and single crystal XRD. EDX analysis was used to determine the elemental composition of BFO and KCl crystal. Photoluminescence confirmed that BFO acts as defect quenching agent for KCl single crystal which improved its optical transparency. Doping of BFO in KCl single crystal increased its hardness as measured by a Vicker’s microhardness test. The effect of BFO on dielectric constant and dielectric loss of KCl crystal, at various temperature and frequencies was studied. The low dielectric constant viz. 4.5 and 5.8 for pure and BFO doped KCl was helpful in designing and fabricating patch antenna in GHz frequency. As a result of BFO doping, the resonant frequency of microstrip patch antenna can be tuned at 5.40 GHz from 6.01 GHz for the KCl single crystal.
关键词： Czochralski technique,GHz applications,microstrip patch antenna,BiFeO3 (BFO),KCl single crystal
更新于2025-09-10 09:29:36
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[IEEE 2017 IEEE MTT-S International Microwave and RF Conference (IMaRC) - AHMEDABAD, India (2017.12.11-2017.12.13)] 2017 IEEE MTT-S International Microwave and RF Conference (IMaRC) - Frequency Agile Monolithic Inset Fed Microstrip Patch Antenna Based on Barium Strontium Titanate (Ba<inf>x</inf>Sr<inf>1-x</inf>TiO<inf>3</inf>) Ferroelectric Substrate
摘要： This paper demonstrates frequency agile inset fed microstrip patch antenna built on Barium Strontium Titanate (BST: BaxSr1-xTiO3) substrate. Concept and design methodology of X-band frequency agile microstrip patch antenna monolithically integrated with coplanar capacitor, bias tee and DC block capacitor are discussed. Antenna design is carried out on 0.5μm thick Ba0.6Sr0.4TiO3 hosted by 1mm Quartz substrate. C-V characterization of this BST film is also performed and presented. Microstrip antenna on BST film has been realized using SolGel method and shows 50MHz frequency tunability during measurement for bias voltage variation from 0V to 154V. The gain and pattern purity of the antenna is maintained over this bandwidth.
关键词： Frequency agility,Microstrip Patch Antenna,Barium Strontium Titanate,Coplanar capacitor
更新于2025-09-10 09:29:36
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Performance analysis of bandwidth and gain improvement of printed wide slot antenna using parasitic patch
摘要： Here, a printed micro strip line fed wide slot antenna with rotated square slot resonator is presented. This article deals with design, modeling and simulation of slotted antenna. A parasitic patch is introduced to improve the gain along with the bandwidth. For bandwidth enhancement, a slotted approach is used in ground of antenna along with rotation in patch and a simple 50 ? microstrip line fed is used to excite the slot in the antenna. The proposed antenna exhibits the return loss (S11) below -10 dB for the frequency mentioned and the effects of design antenna parameters such as slot width and patch width have been investigated. Results shows that a good amount of bandwidth (approximately 3 GHz) and gain (approximately 8 dB) is achieved ranging from 2.23 to 5.4 GHz which shows its application in world interoperability for microwave access (WIMAX) and wireless local area network (WLAN) bands.
关键词： microstrip patch antenna (MSA),parasitic patch,wide-slot antenna,High frequency structure simulator (HFSS)
更新于2025-09-09 09:28:46
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[IEEE 2018 International Conference on Advances in Computing, Communications and Informatics (ICACCI) - Bangalore, India (2018.9.19-2018.9.22)] 2018 International Conference on Advances in Computing, Communications and Informatics (ICACCI) - Triple Band Antenna for 5G Applications
摘要： In this paper, a compact multiband single substrate microstrip patch antenna is presented. The antenna operates in the mm wave frequency band (30GHz-300GHz) which suits future 5G applications. The triple band microstrip patch antenna resonates at 26.92GHz, 35.08GHz and 54.74GHz. The antenna shows a return loss of -52.87dB with a bandwidth and gain of 13.92% and 6.36dB respectively at 54.74GHz. These results manifest the antenna to be a superior candidate for future 5G applications.
关键词： microstrip patch antenna,mmwave,triple band,5G antenna
更新于2025-09-09 09:28:46
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[Institution of Engineering and Technology 12th European Conference on Antennas and Propagation (EuCAP 2018) - London, UK (9-13 April 2018)] 12th European Conference on Antennas and Propagation (EuCAP 2018) - SIW Based Antenna Array with Power Equalization in Elevation Plane for 5G Base Stations
摘要： In this paper, we present a 5G base station phased array antenna concept based on the power flux equalization in the elevation plane. We designed an aperture- coupled microstrip patch sub-array fed by a substrate integrated waveguide to produce a cosecant radiation pattern in the elevation plane. The antenna is designed to be operational at frequencies around 28.5GHz, targeting a candidate 5G mm-wave frequency band. The dimensions of the cosecant antenna sub-array support wide-angle scanning of the final phased array antenna in the horizontal plane. The antenna exhibits good impedance and radiation properties in the scanning range +/- 45deg.
关键词： cosecant radiation pattern,microstrip patch antenna,substrate integrated waveguide,phased array antenna,5G base station
更新于2025-09-04 15:30:14
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[IEEE 2018 3rd International Conference for Convergence in Technology (I2CT) - Pune (2018.4.6-2018.4.8)] 2018 3rd International Conference for Convergence in Technology (I2CT) - A Star Shaped Superwide Band Fractal Antenna for 5G Applications
摘要： A superwide band (SWB) microstrip fractal antenna for 5G communication is proposed in this paper and a snow?ake like structure is achieved using star shaped fractal geometry. The con?guration of the proposed design has a substrate of Rogers RT5880 having thickness of 0.787mm, dielectric constant of 2.2 and loss tangent of 0.0009. The presented antenna is simulated using CST Microwave studio and parameters of the proposed structure are optimized so that it is suitable to be operated in the frequency range from 17.22GHz to 180GHz with the fractional bandwidth of 165%. The overall dimension of the antenna is just 20mm×20mm which is very compact. The peak gain of 10dBi and average gain of 6.4dBi is acquired and over all appreciated gain is maintained throughout the entire range. Result curves such as S-parameter, VSWR, radiation pattern, gain and Input impedance have been depicted and discussed in the paper.
关键词： 5G Technology,Snow?ake structure,Fractal antenna,Star shaped,Superwideband (SWB),Microstrip patch antenna
更新于2025-09-04 15:30:14
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[Institution of Engineering and Technology 12th European Conference on Antennas and Propagation (EuCAP 2018) - London, UK (9-13 April 2018)] 12th European Conference on Antennas and Propagation (EuCAP 2018) - High gain compact 57-66 GHz antenna array for backhaul & access communications
摘要： Highly integrated multilayered patch antenna arrays are proposed in this paper for 60 GHz wireless communications. Electromagnetic coupling between two stacked patches is used for improving the broadband performance. Three different structures of single column 4-element arrays are presented with center and corporate feeding networks. Maximum gain of 12.2 dBi and <-10 dB return loss in the entire unlicensed frequency band 57-66 GHz is measured. Furthermore, a compact 4x16 antenna array (41 mm x 13 mm) is presented with 18.7 dBi maximum gain, 8 GHz (57-65) bandwidth and 7? HPBW (half power beam width) in H plane.
关键词： low-loss,antenna array,microstrip patch antenna,multilayer,60 GHz,compact,stacked patches
更新于2025-09-04 15:30:14
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[Lecture Notes in Electrical Engineering] Recent Trends in Communication, Computing, and Electronics Volume 524 (Select Proceedings of IC3E 2018) || Study the Effect of Ground on Circular Loop Patch Antenna (CLPA)
摘要： This proposed article presents multiband circular ring loop patch antenna (CLPA). The design is simulated using HFSS tool and studied by varying the ground patch size (area). The substrate material FR-4 is used and studied for the frequency range from 1 to 30 GHz in the proposed article. After analysing the effect of change in ground (GND), it is found that multiband characteristics slightly change in terms of S11 (dB) parameter below 20 GHz and above 20 GHz bandwidth increases. The CLPA shows eight to ten resonating frequency bands. Simulated data show ?40.98 (dB) re?ection coef?cient at the frequency 15.88 GHz in design 1; similarly, design 2, design 3, design 4, design 5, and design 6 obtain maximum re?ection coef?cient ?33.76 (dB) at 10.70 GHz, ?37.27 (dB) at 27.65 GHz, ?36.43 (dB) at 10.70 GHz, ?37.08 (dB) at 21.33 GHz, and ?29.11 (dB) at 15.35 GHz. The proposed antenna can be applied in numerous wireless applications by selecting different ground size.
关键词： Multiband,Re?ection coef?cient,HFSS,Microstrip patch antenna
更新于2025-09-04 15:30:14
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[Institution of Engineering and Technology 12th European Conference on Antennas and Propagation (EuCAP 2018) - London, UK (9-13 April 2018)] 12th European Conference on Antennas and Propagation (EuCAP 2018) - TCM-based Miniaturization Progress of a Square Microstrip Patch Antenna
摘要： A miniaturized square microstrip patch antenna (MPA) is analyzed and designed using the theory of characteristic mode (TCM). The TCM is applied to investigate and adjust the current distribution of the lowest resonance mode that the square patch can support. Based on the current distribution of the concerned mode, the two opposite edges of the patch where the characteristic current mainly concentrates on are curved with quadratic function curves. Then stubs are periodically loaded on the curved-edges, and the current along the curved-edges occurs slight changes. At last, two apertures are etched on the patch, and more current trends to flow along the edges of the apertures. The above three approaches are examined through TCM, and all lead to reduction of resonance frequency of concerned mode. After optimizing the position of the probe-fed, a 60% miniaturization in the size of the square MPA is achieved. The TCM is expected to provide more effective guidance in antenna miniaturization design.
关键词： theory of characteristic mode (TCM),square microstrip patch antenna (MPA),miniaturization
更新于2025-09-04 15:30:14