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107 articles for “HF”
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Compact MIMO Antenna Array based on Koch Fractal Metamaterial for 5G Applications
Abstract: In this paper, a design of a printed MIMO antenna array for 5G applications is proposed based on low profile structure. Thus, the antenna element is designed as a printed mender monopole with a partial ground plane. The partial ground plane is proposed to realize bandwidth enhancements through etching rectangular slots in the antenna back panel. It is found that such antenna shows two frequency bands, S11<-10dB, from 3 GHz …
Published in Journal of Microwave Engineering and Technologies · Vol. 9, Issue 3, 2022 · pp. 1–7 Read article
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U-Shaped Antenna Design for 5G High Frequency Band
Abstract: Designing small antennas for 5G millimeter wave bands is an emerging research subject in the wireless communication age. This research paper describes the design, simulation, and measurement of a micro-strip patch antenna operating at high frequency, 38 GHz. The substrate material used is FR4 proxy due to its easy availability and cost with the dielectric constant 3.8 to 4.6. The analysis and simulation are done on Ansys HFSS Software. The …
Published in Journal of Microwave Engineering and Technologies · Vol. 10, Issue 3, 2023 · pp. 31–40 Read article
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27- Level High Frequency Transformer Based- MLI for Integration of Renewable Energy
Abstract: This research proposes a unique high-frequency transformer (HFT)-based multilevel inverter(MLI) with 27 levels can be constructed with a single DCpower supply and twenty switching devices. The proposedMLI topology comprises three medium frequency isolationtransformers, each with a different rated voltage. Since thetransformers used in MLI operate at high frequencies, thesuggested system has a smaller volume and weight. Acascaded H-bridge (CHB) connects each transformer'sprimary windings, and the secondary windings areconnected in series …
Published in Journal of Power Electronics and Power Systems · Vol. 13, Issue 2, 2023 · pp. 1–11 Read article
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CTCHFA: Discovery of Circulating Tumor Cells in Metastatic Breast Cancer and Nonmetastatic Cancer by using Novel Hybrid Hierarchical Clustering Algorithm in Firefly Distance
Abstract: AbstractBlood testing for circulating tumor cells (CTCs) has emerged as one of the highest fields in cancer research. CTC detection are an early gene marker of reaction to systemic therapy, whereas their molecular characterization has a strong field that can be translated to individualized targeted treatments and spare breast cancer (BC) patients from unnecessary and ineffective therapies. Genomic research regarding CTCs monitoring for BC is limited due to the lack …
Published in Journal of Computer Technology & Applications · Vol. 6, Issue 1, 2015 · pp. 9–18 Read article
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Clinical and Etiological Profile of Heart Failure Patients
Abstract: This study was undertaken to study the clinical and etiological profile of patients with heart failure at Mamata General Hospital, Khammam. This is a study of clinical and etiological profile of heart failure in patients of above 15 years of age, who were admitted in Mamata Medical College during the period December 2012 to November 2013. The incidence of heart failure (HF) in Mamata General Hospital is less compared to …
Published in Research and Reviews: A Journal of Medicine · Vol. 4, Issue 1, 2014 · pp. 6–11 Read article
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Design and Performance Analysis of a Log Periodic Dipole Antenna with a Frequency Range of 1350 to 2690 MHz
Abstract: The introduction of broadband systems to communication and non-communication technologies has demanded the design of broadband antennas. RF antennas have relatively small bandwidth and poor directivity while the log periodic dipole antenna (LPDA) provides better directivity and gain with wide bandwidth. For a communication link and data transmission at higher rates, wider bandwidth is required with high gain and directivity. This necessitates designing a wideband antenna. In this paper, a …
Published in Journal of Microwave Engineering and Technologies · Vol. 4, Issue 1, 2017 · pp. 6–12 Read article
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Unravelling the Power of Avro and Hadoop: Revolutionising Big Data Processing and Serialization
Abstract: As the technology is in progress, the accumulation of data is also increasing. As a result of which a lot of organisations are constantly seeking new yet innovative solutions to process and analyse this huge accumulation of data. Well Hadoop proved a gamе-changеr in thе rеalm of big data procеssing whereas Avro proved a solution provider to data Serialization. In this review work, wе will dеlvе into thе world of …
Published in International Journal of Data Structure Studies · Vol. 2, Issue 1, 2024 · pp. 8–13 Read article
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Alopecia Areata: Complex Roots and Potential Cures
Abstract: Autoimmunity is when the healthy organs of an individual’s body are attacked by its own immune system, leading to illness or functional abnormalities. The hair follicles (HFs) are wrongly destroyed by the immune system in a condition known as Alopecia Areata and results in chronic non-cicatricial hair loss discernible by spherical patches. It’s a severely worsening or relapsing malady that can be permanent during severe falling out of hair. In …
Published in International Journal of Vaccines · Vol. 1, Issue 1, 2024 · pp. 41–54 Read article
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Koch Slot DRA Antenna Array for Enhanced X-Band Applications
Abstract: This work introduces an innovative method aimed at improving the gain of Dielectric Resonator Antenna (DRA) arrays functioning within the X-band spectrum. The design features a Koch-shaped slot-coupled feeding structure, utilising the properties of a short-ended microstrip line to enhance radiation directionality. The results of the simulation show that compared to conventional rectangular and V-shaped slot designs, the suggested antenna array provides a notable gain enhancement. This performance boost demonstrates …
Published in Recent Trends in Electronics Communication Systems · Vol. 12, Issue 2, 2025 · pp. 8–20 Read article
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A Review On A Compact Dual Polarized Antenna Array
Abstract: A compact dual-polarized antenna array for low-cost millimeter-wave (mm Wave) applications is proposed in this article. Utilizing a patch antenna with two orthogonal feeds positioned horizontally and vertically, a dual linear polarization antenna can be created. Two ports—a vertical port and a horizontal port—make up the suggested design. The antenna produces horizontal polarization by stimulating the horizontal port. The antenna produces vertical polarization by stimulating vertical port. With the higher …
Published in Journal of Microwave Engineering and Technologies · Vol. 9, Issue 2, 2022 · pp. 46–50 Read article
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Overcome reservoir heterogeneity challenges by utilizing rock typing techniques
Abstract: Once a field has been identified, and a general method of reservoir exploitation decided, there are several methods to achieve the reservoir management goal. Still, some ways may cost twice as much as others. The most critical operations to developing a field are drilling of wells, and it overemphasizes which in the early stages of field development. Identifying well position and reservoir properties arrange as the most critical step for …
Published in Journal of Petroleum Engineering & Technology · Vol. 10, Issue 1, 2020 · pp. 33–45 Read article
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Comparative Study of Symmetric and Asymmetric Oxide Double Gate Junction less FET
Abstract: we carry out the performance of symmetric oxide (HfO2+HfO2) and asymmetric oxide (SiO2+HfO2) n-type junction less field-effect transistor (JLFET) based on two- dimensional Poisson equation. This study is accomplished by simulating a symmetric and asymmetric double gate JLFET on Sentaurus, Technology Computer Aided Design (TCAD) simulator for Silicon (Si) material at room temperature and varying temperature in between 300-360 k. Based on device simulation we find that the asymmetric oxide …
Published in Journal of Semiconductor Devices and Circuits · pp. 14–20 Read article
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Ionospheric Disturbances and Communication Signal anomalies due to eruption of Solar flare Activity
Abstract: Solar flares tend to disrupt the radio communication systems and modulate active radio wave frequencies, particularly the ones that have utility in High Frequency (HF) radio signals and transceiver signals because they are the ones who find utility in radio communications systems. Solar flares generate electromagnetic waves which interact with the earth’s atmospheric medium and travel through the ionospheric region. These electromagnetic waves modulate radio frequency communication signals. This modulation …
Published in Current Trends in Signal Processing · Vol. 15, Issue 1, 2025 · pp. 7–14 Read article
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Comparative Analysis of Different Mechanical Properties of Banana Pseudostem Fiber and Pineapple Leaf Fiber Reinforced Polymer Composite
Abstract: In this research, a hybrid natural fiber polymer composite is prepared using different combinations of banana pseudostem fiber and pineapple leaf fiber in a discontinuous reinforcement phase and epoxy polymer in a continuous matrix phase. For the preparation of the composite, the hand layup technique is used and important mechanical characteristics, namely tensile, flexural, and impact strength, are determined. The findings of this investigation represent that the highest values of …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 1248–1256 Read article
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Design and Analysis of Inverters using Double Gate MOSFET
Abstract: AbstractThe double gate MOSFET is a form of MOSFET where two gates are fabricated along the length of the channel, one after another. There are several applications of double gate MOSFETs. It is possible to design logic gates using double gate MOSFETs. It is one of the digital applications of it. This paper interprets the design and analysis of different types of inverters using DG-MOSFET. The advantages of using DG-MOSFET …
Published in Journal of Semiconductor Devices and Circuits · Vol. 4, Issue 1, 2017 · pp. 1–7 Read article
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Comparative Study of Symmetric and Asymmetric Oxide Double Gate Junction less FET
Abstract: We carry out the performance of symmetric oxide (HfO2+HfO2) and asymmetric oxide (SiO2+HfO2) n-type junction less field-effect transistor (JLFET) based on two- dimensional Poisson equation. This study is accomplished by simulating a symmetric and asymmetric double gate JLFET on Sentaurus, Technology Computer Aided Design (TCAD) simulator for Silicon (Si) material at room temperature and varying temperature in between 300-360 k.Based on device simulation we find that the asymmetric oxide shows …
Published in Journal of Semiconductor Devices and Circuits · Vol. 8, Issue 2, 2021 · pp. 14–20 Read article
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Effects of High-κ on Device Performance of Nano-Regime GaN-based MOSFETs
Abstract: GaN-based metal-oxide semiconductor field-effect transistors (MOSFETs) are very promising for future digital-logic-device applications. Different gate dielectric materials are employed to evaluate the figure-of-merit of GaN-based MOSFETs. The gate length (LG) is kept constant at 10 nm. The gate voltage varies from 0 V to 1 V for the device switching from turn OFF to turn ON-state. For the device with HfO2 as gate oxide, the ON-state current (ION) and OFF-state …
Published in Journal of Semiconductor Devices and Circuits · Vol. 3, Issue 2, 2016 · pp. 21–26 Read article
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Influence of Dielectric and Active layer Thickness on MgZnO Thin Film Transistor Electrical Characteristics
Abstract: From last decades, Thin Film Transistors Technology uses low-k dielectric material as an insulator. Insulator thickness plays an important role in device dimension. The insulating layer also known as the gate oxide separates the gate electrode from the channel region of the transistor. If the insulating layer is too thin, there is a greater chance that electrons can tunnel through the oxide layer, leading to leakage current. To mitigate this …
Published in Journal of Polymer & Composites · Vol. 11, Issue 5, 2023 · pp. 17–26 Read article
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Image Processing and Deep CNN-based Automatic Liver Cancer Detection
Abstract: Liver cancer ranks among the leading causes of mortality for people worldwide. In the current situation, manually identifying the cancer tissue is a challenging and timeconsuming task. Treatment planning, response monitoring, tumor load assessment, and prediction are all made possible by the segmentation of liver lesions in CT scans. To address the current problem of liver cancer, the Hybridized Fully Convolutional Neural Network (HFCNN), which has been theoretically modeled, has …
Published in International Journal of Biomedical Innovations and Engineering · Vol. 3, Issue 1, 2025 · pp. 39–41 Read article
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SGLT2 Inhibitors in Heart Failure and Chronic Kidney Disease: Expanding Therapeutic Horizons beyond Glycemic Control
Abstract: Heart failure (HF) and chronic kidney disease (CKD) are closely related clinical diseases that significantly increase morbidity and death worldwide. The co-occurrence of both conditions is frequently referred to as the "cardio-renal syndrome," in which the failure of one organ hastens the decline of the other. The original purpose of sodium–glucose cotransporter-2 (SGLT2) inhibitors was to treat type 2 diabetic mellitus (T2DM) by reducing blood sugar levels. Nevertheless, new data …
Published in Research and Reviews: A Journal of Pharmacology · Vol. 16, Issue 2, 2026 Read article