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71 articles for “Microwave design”
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Pathloss and Coverage Analysis of FM Signals for Terrestrial Communication Design over Akure, Nigeria
Abstract: Accurate analysis of Free Space Loss (FSL) of electromagnetic radiations plays significant roles in the design and planning of terrestrial communication system at radio wave and microwave frequencies. Hence, it remains important to continuously evaluate the dependence of radio waves signal strength on the properties of the propagating medium. This work employed drive test technique and free space loss analysis of some Frequency-Modulated (FM) channels in Akure, Ondo State, Nigeria, …
Published in Journal of Microwave Engineering and Technologies · Vol. 10, Issue 2, 2023 · pp. 8–21 Read article
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Intelligent Design Approaches in Microwave Engineering Using Machine Learning Techniques
Abstract: In microwave engineering, machine learning (ML) has become a potent technology allowing quicker design cycles, improved modelling accuracy, and automatic optimisation of complicated systems. Recent developments in the use of ML methods to microwave components and systems, including antennas, filters, and high-frequency circuits, are summarised in this study. In the framework of electromagnetic simulation, surrogate modelling, and parameter extraction, supervised and unsupervised learning algorithms are addressed. Moreover, the study looked …
Published in Journal of Microwave Engineering and Technologies · Vol. 12, Issue 2, 2025 · pp. 31–38 Read article
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Design of UWB Microwave Filter Using Quarter Wavelength Short-Circuited Stub
Abstract: UWB technology has progressed a lot in recent years for high speed wireless communications and other applications which need higher data rate and wider bandwidth. In this paper UWB bandpass filter is designed using quarter wavelength (λ0/4) short circuited stubs to improve the performance of UWB. Designed UWB filter gives higher performance and lower insertion loss in UWB spectrum. 5th order UWB bandpass filter is designed using CST MWS simulation …
Published in Journal of Microwave Engineering and Technologies · Vol. 2, Issue 2, 2015 · pp. 32–36 Read article
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Design and Performance Analysis of Microwave Filters and Resonators for High-Frequency Systems
Abstract: Microwave filters and resonators are fundamental components in high-frequency systems, playing a crucial role in signal selection, interference suppression, and frequency stabilization. This review presents a detailed analysis of design methodologies and performance characteristics of microwave filters and resonators used in modern communication and radar applications. Various filter topologies, including low-pass, high- pass, band-pass, and band-stop configurations, are examined with respect to their frequency response, insertion loss, selectivity, and bandwidth. …
Published in Journal of Microwave Engineering and Technologies · Vol. 13, Issue 1, 2026 · pp. 8–16 Read article
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Roll-off Improvement of Open-circuited Stub Bandstop Filter
Abstract: This paper presents an alternative implementation of a shunt open-circuited stub bandstop filter for microwave circuit. By making use of the proposed implementation, a simple and compact bandstop filter with distinct bandstop characteristics is designed at 1.25 cutoff frequency and FBW of 1.2. This paper also focuses on how to increase the roll-off of bandstop filter by increasing the number of the shunt stub. A shunt open-circuited stub is the …
Published in Journal of Electronic Design Technology · Vol. 4, Issue 1, 2013 · pp. 19–25 Read article
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Design, Analysis and Comparison of Conventional and Millimeter Wave Antenna
Abstract: A parameter study was performed of a novel printed quasi-Yagi antenna with regard to its design at microwave and millimeter wave frequencies and its application. A rectangular-shaped slot was incorporated into patch and Yagi antenna as a patch was used with a coplanar waveguide (CPW) as a feeding structure. Using same structure with different dimensions, the increment in frequency from 4.4 GHz to 30 GHz and the antenna gives better …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 3, Issue 1, 2016 · pp. 20–24 Read article
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Dual Band Suspended Microstrip Right-angled Isosceles Triangular Patch Antenna
Abstract: ABSTRACT In this paper a dualband suspended microstrip right-angled isosceles triangular patch antenna is designed for use in microwave imaging system for breast cancer tumour detection. An approximate design equations are developed and validated by CST Microwave Studio’s simulated result. Here dual band operation is achieved by manipulating fundamental mode and higher mode of microstrip antenna. Tuning of this antenna is achieved at frequency 3.35 GHz and 6.70 GHz which …
Published in Journal of Communication Engineering & Systems · Vol. 2, Issue 2, 2012 · pp. 7–13 Read article
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A Dipole Circular Patch Antenna for Operation in the X-Band
Abstract: This microwave engineering research paper proposes, designs, calculates, and simulates a novel dipole circular patch antenna for theoretical wideband operations in the X-band (the 8 GHz to 12 GHz frequency range). This proposed microstrip patch antenna was realized using FR-4 as a dielectric (a thickness of 1.5 mm) with copper being used in both the ground plate and the two transmitting circular elements (the so-called patches with a thickness of …
Published in Journal of Microwave Engineering and Technologies · Vol. 8, Issue 2, 2021 · pp. 1–8 Read article
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Analysis of Swastika (Mythological Symbol) Shaped Split-Ring Resonators and Complementary Split-Ring Resonators Coupled to Planar Microstrip Transmission Lines and Microstrip Patch Antenna
Abstract: AbstractHere in this paper, we have developed a new kind of metamaterial unit cell in the shape of a Hindu mythological symbol ‘Swastik’. Here we designed and analyzed the behavior of split ring resonators (SRRs), complementary split ring resonators (CSRRs) and microstrip transmission line. Here we also investigated the electromagnetic behavior of microstrip transmission line coupled with metamaterial unit cells. The proposed analysis is useful to design the compact microwave …
Published in Current Trends in Signal Processing · Vol. 8, Issue 1, 2018 · pp. 10–22 Read article
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Dielectric Responses of Hybrid Polymer Matrix Composites at 2–3 GHz Microwave Frequencies
Abstract: AbstractMeasurement of dielectric properties of polymeric materials in the 2–3 GHz frequency region is very important for strategic applications such as communication electronics, rapid prototyping, and radiation assisted heating. As per international standards for industrial, scientific and medical applications (ISM) 0.9, 2.45 and 5.8 GHz microwaves can be used both for heating and communication purposes, of this 2.45 GHz is most widely used frequency, hence it is important to characterize …
Published in Journal of Polymer & Composites · Vol. 3, Issue 1, 2015 · pp. 1–11 Read article
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LNA-BPF for Receiver Applications in ISM Band
Abstract: A new approach of design and performance analysis of low-noise amplifier with band-pass filter at 2.45 GHz is proposed in this paper. High gain of 15.99 dB and noise of 1.024 dB is achieved at a frequency of 2.45 GHz. A low noise amplifier is used in receiver applications to amplify possibly very weak signals. LNA and BPF are placed in the front end of the receiver circuit so that …
Published in Journal of Microwave Engineering and Technologies · Vol. 3, Issue 2, 2016 · pp. 7–12 Read article
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Design of a Fractal Aperture Coupled Microstrip Antenna for UWB Applications
Abstract: Ultra wide band frequency allocation of 5.3–9.2 GHz spectrum by Federal Communications Commission (FCC) presented myriad applications of exciting opportunities and challenges for design in the communication arena, including antenna design. The compact antenna designs with operating bandwidths of more than 100% are a challenging demand for the current wireless scenario. This can be easily met with fractal boundaries by using wide slot antennas. In this paper, fractal slot antenna …
Published in Journal of Microwave Engineering and Technologies · Vol. 4, Issue 1, 2017 · pp. 19–22 Read article
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Square Shape CPW Antenna for Breast Cancer Detection
Abstract: In this study, a antenna design is proposed to detect the breast cancer tissues by using microwave imaging based on the contrast in electrical properties of healthy fatty Breast tissues. The designed antenna is affordable as a primary health observation and has no health risk. A highly directive flexible structure is presented for microwave imaging which can be used in clinical diagnosis. To detect the tumour in a breast phantom, …
Published in Research and Reviews : Journal of Computational Biology · Vol. 8, Issue 1, 2019 · pp. 34–38 Read article
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Rectenna Design with Defect Ground Structure at 2.16 GHz
Abstract: AbstractThis paper presents the rectenna design for Wireless Power Transmission. The design would receive and convert microwave of 2.16 GHz to DC. Proposed rectenna is a combination of microstrip patch antenna, followed by stepped impedance filter and then matching circuit and rectifier circuit. A low-pass filter (LPF) at the input port of the rectifying circuit is used to suppress the high order harmonics. The IE3D software is used for the …
Published in Journal of Communication Engineering & Systems · Vol. 3, Issue 1, 2013 · pp. 16–18 Read article
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Design and Performance Analysis of an UWB Wearable Patch Antenna for WBAN Applications
Abstract: In this paper we represent an ultra-wide band wearable textile antenna for body area network. The proposed antenna consists of a decagonal radiating patch and a partial ground plane with a square slot. For textile antenna, the textile materials and the planer shapes provide a smooth integration into clothing while preserving the characteristic properties of the textile. The ultra-wide band for these types of antenna is achieved by optimizing the …
Published in Journal of Communication Engineering & Systems · Vol. 7, Issue 3, 2017 · pp. 1–7 Read article
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Design and Simulation of Triple Band Microstrip Patch Antenna for Ku-band, K-band and Ka-band Applications
Abstract: AbstractThis paper represents a microstrip patch antenna for future 5G-communication technology. The proposed antenna designs are simulated and their performances are analyzed for different parameters like lower return losses, higher gain, voltage standing wave ratio (VSWR), current distribution, far field radiation and wide bandwidth performance for the tri-frequency band operation in Ku band (12–18 GHz),K-band (18–27 GHz) and Ka-band (27–40 GHz) as per the specified IEEE standard. The proposed antenna …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 7, Issue 1, 2020 · pp. 26–33 Read article
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Tropospheric Variation of Point Refractivity Gradient and Geo-climatic Factor over a Coastal Location in Tropical Nigeria
Abstract: Accurate assessment of refractivity gradient and Geo-climatic factor is crucial for maintaining reliable radio signal propagation in clear-air environments. These parameters are essential for determining the fade margin necessary to ensure a stable and effective wireless radio link, given the unstable nature of the atmosphere through which the signals travel. It is crucial to have accurate knowledge of these characteristics, particularly at microwave antenna heights of around 70 meters, in …
Published in Journal of Remote Sensing & GIS · Vol. 15, Issue 2, 2024 · pp. 28–42 Read article
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Design of a Stacked Aperture Coupled Microstrip Antenna for UWB Applications
Abstract: The paper presents a stacked T-shaped Aperture coupled microstrip antenna designed for ultra-wide band wireless applications. The proposed UWB antenna covers two frequency bands as of 2.49 to 2.9 GHz and 6.85 to 20 GHz and used for the various applications like Bluetooth, Zig-Bee (2.4 GHz), C band (6 to 8 GHz), X band (8 to 12 GHz), Ku band (12 to 18 GHz) and Satellite communication. The stacked antenna …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 4, Issue 1, 2017 · pp. 12–16 Read article
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Inter-satellite Optical Wireless Communication (IsOWC) System Design: A Study
Abstract: AbstractLaser communication links in space are attractive alternatives to present day microwave links. Space communication as employed in satellite to satellite link is traditionally performed using microwaves. High capacity inter-satellite communication crosslinks will permit more efficient and more reliable operation of future satellite systems. The mass, power consumption and size of optical transceiver module will be smaller than that of a microwave transceiver. On the other hand, inter-satellite communication is …
Published in Trends in Opto-electro & Optical Communication · Vol. 8, Issue 1, 2018 · pp. 20–24 Read article
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Potential, Principles, and Applications of Microwave Energy
Abstract: Microwave energy 300 MHz to 300 GHz electromagnetic radiation is essential to modern science and technology. Its applications include telecommunications, medicine, industrial processing, and renewable energy, despite its association with kitchen appliances. Microwave energy generation, transmission, and material interaction are covered in this article. It emphasises wireless communication, radar, medical therapies, and microwave- assisted chemical processes. The study also examines new developments in microwave engineering, such as the creation of …
Published in Journal of Microwave Engineering and Technologies · Vol. 13, Issue 1, 2026 · pp. 34–39 Read article