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IET Microwaves, Antennas & Propagation
Scopus
ISSN 1751-8733 · Wiley · 563 artikel di indeks
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Artikel Jurnal
Antenna Modelling Based on Image‐Model‐Oriented CNN Exploiting LSTM
ABSTRACT To address the time‐consuming and computationally intensive challenges associated with antenna performance analysis using full‐wave electromagnetic simulation software combined with global optimisation methods, this study proposes an efficient strategy based on deep learning, applied to…
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Artikel Jurnal
A Systematic Approach for Determining Transmitarray Specifications in Near‐Field Scenarios
ABSTRACT Manipulating near‐field electromagnetic wavefronts is crucial for hyperthermia, compact test range systems and wireless power transmission. This paper investigates a design methodology of transmitarrays for near‐field wavefront shaping. Unlike conventional methods that rely on trial and…
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Artikel Jurnal
A Circularly Polarised Zero Beam‐Squinting Leaky‐Wave Antenna With Increased Gain Using NRI‐TL Metamaterials
ABSTRACT The theory, design and experimental validation of a circularly polarised (CP) metamaterial fixed‐beam leaky‐wave antenna (LWA) with zero beam‐squinting (ZBS) is presented in this paper. It consists of two oppositely directed negative‐refractive‐index transmission‐line (NRI‐TL) LWAs, which…
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Artikel Jurnal
Research on methods to enhance the survivability of AWACS with FDA against anti‐ARMs on a battlefield
Abstract The Airborne Warning and Control System (AWACS) are pivotal assets in aerial operations, necessitating specialised protection measures, and serving as prime targets for enemy anti‐radiation missiles (ARMs). This paper explores approaches to enhance the battlefield survivability of…
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Artikel Jurnal
An Extremely Low‐Profile Electronically Reconfigurable 1‐D X‐Band Leaky‐Wave Antenna
ABSTRACT In this work, a simple analytical model based on the array factor to effect 1‐bit electronic reconfigurability in one‐dimensional 1‐D leaky‐wave antennas (LWAs) is proposed. The model, based on the array factor, outlines the discrete control of the phase constant along the longitudinal…
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Artikel Jurnal
Diffraction by a finite parallel‐plate waveguide cavity with perfect electric conductor loading: The case of E polarisation
Abstract The diffraction by a finite parallel‐plate waveguide cavity with perfect electric conductor loading is rigorously analysed for the E‐polarised case using the Wiener–Hopf technique. By taking the Fourier transform to the unknown scattered field and applying boundary conditions in the…
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Artikel Jurnal
Circularly Polarised Stacked Patch Antennas for X‐Band Uplink/Downlink CubeSat Communication Systems
ABSTRACT In this article, multiple circularly polarised (CP) stacked patch antenna designs are proposed with different perturbation techniques that can be used in future CubeSat missions using NASA Near Earth Network (NEN) or Deep Space Network (DSN) ground stations. The stacked patches with…
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Artikel Jurnal
Biconical Cavity Utilised in Realising Quadruple‐ and Quintuple‐Mode Wideband Bandpass Filters
ABSTRACT This work introduces the biconical cavity as a high‐performance resonator for multimode wideband bandpass filters. Unlike conventional cylindrical cavities, its tapered geometry enhances mode separation and extends the rejection band compared to an equal‐order cylindrical cavity of the…
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Artikel Jurnal
Dual‐Band Circularly Polarised Asymmetric Linear‐Tapered Horn Antenna for Feeder of Synthetic Aperture Radar Onboard Microsatellite
ABSTRACT This paper presents a novel dual‐band waveguide‐fed circularly polarised (CP) horn antenna for the feeder of synthetic aperture radar (SAR) onboard microsatellite. The proposed horn antenna consists of an asymmetric linearly tapered slot and a waveguide feed. The C‐/X‐band left‐hand…
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Artikel Jurnal
A Wideband Circularly Polarised High‐Gain Antenna Using Array Technology and Truncated Dielectric Plates
ABSTRACT A gain enhancement method is presented for a circularly polarised (CP) wideband Fabry–Perot resonator antenna (FPRA). The proposed antenna structure consists of a multilayer configuration of closely spaced truncated dielectric plates (TDPs) and a broadband CP patch array. By appropriately…
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Artikel Jurnal
Compact Planar Zero‐Ground‐Clearance End‐Fire CP Antenna With Integrated Slow‐Wave Structure for Mobile Terminal Applications
ABSTRACT This paper introduces a novel compact planar end‐fire antenna system featuring circularly polarised (CP) radiation and zero ground clearance. The system is constructed using a half‐wavelength TE0.5,0 mode open waveguide, which inherently generates vertically polarised electric components…
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Artikel Jurnal
A combined aperture‐coupled membrane microstrip patch antenna array
Abstract A novel lightweight L‐band combined aperture‐coupled microstrip antenna has been proposed for synthetic aperture radar (SAR) applications. The proposed antenna element is composed of only two membranes. This design innovatively integrates the coupling aperture with the radiating patch…
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Artikel Jurnal
A miniaturised frequency selective rasorber with wide transmission band
Abstract This paper demonstrates a miniaturised frequency selective rasorber (FSR) that incorporates meander cross‐rings to realise a wide transmission band. The FSR comprises a resistive layer and a bandpass frequency selective surface (FSS), which are separated by an air layer. The resistive…
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Artikel Jurnal
Fundamental and Harmonic Beamforming of Desire Time‐Modulated Planar Arrays With Deep Learning
ABSTRACT In recent years, there has been a significant surge in the utilisation of deep learning and machine learning techniques for addressing complex and time‐intensive problems. The significance of employing deep learning becomes increasingly evident as the complexity of the problem increases…
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Artikel Jurnal
Dual‐band single‐layer substrate‐integrated waveguide filtering antennas with independently controllable bands
Abstract A novel design method of dual‐band single‐layer substrate‐integrated waveguide (SIW) filtering antennas with independently controllable bands is proposed in this paper. The basic two‐pole dual‐band filtering antenna is proposed by a dual‐mode rectangular SIW cavity coupled to two…
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Artikel Jurnal
Filter Design Using Ultra‐Miniaturised Substrate‐Integrated Coaxial Cavity
ABSTRACT The contribution of this work is to propose an ultra‐miniaturised substrate‐integrated coaxial cavity (SICC) and its applications in bandpass filter (BPF) design. The proposed SICC comprises two dielectric substrates with three metal layers. The top and bottom metal layers form the…
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Artikel Jurnal
The Large Gap E‐Plane Omori Circulator: First and Second Circulation Conditions
ABSTRACT A characteristic of the E‐plane circulator is that it displays two neighbouring solutions for the first and second circulation conditions. The so‐called small gap E‐plane circulator was dealt with in the literature. This paper is concerned with the large gap geometry. It outlines a simple…
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Artikel Jurnal
Single‐Layer Fourth‐Order SIW Filtering Antenna With Controllable Radiation Nulls
ABSTRACT This paper proposes a filtering antenna utilising single‐layer substrate‐integrated waveguide (SIW) dual‐mode cavities for 5G millimetre‐wave user equipment. The first dual‐mode cavity operates in TE110 and TE210 modes, generating a radiation null (RN) above the passband through…
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Artikel Jurnal
Multimode resonant microstrip antennas with electrically small patch and frequency scannable circularly polarised angle
Abstract Semi‐analytical design approach to electrically small, dual‐mode resonant, wideband circularly polarised (CP) microstrip annular sector patch antenna (MASPA) with variable polarization is proposed for satellite‐assisted Internet‐of‐vehicle (IoV). At first, the upper bound of electrically…
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Artikel Jurnal
A Wideband Multibeam Transmitarray Antenna Based on 3‐D FSS
ABSTRACT This paper presents a novel method for designing a wideband dual‐polarised multibeam transmitarray antenna. First, a dual‐polarised element is implemented through a polarisation‐separating, orthogonal‐interleaved three‐dimensional frequency‐selective surface (3‐D FSS). Subsequently, a…