Iet Microwaves Antennas & Propagation最新文献

Cross-Polarisation Suppression in Self-Diplexing Antennas

IF 1.1 4区计算机科学

Iet Microwaves Antennas & Propagation Pub Date : 2025-04-26 DOI: 10.1049/mia2.70020

Yitong Yao, Gang Dong

引用次数: 0

Compact Planar Zero-Ground-Clearance End-Fire CP Antenna With Integrated Slow-Wave Structure for Mobile Terminal Applications

IF 1.1 4区计算机科学

Iet Microwaves Antennas & Propagation Pub Date : 2025-04-24 DOI: 10.1049/mia2.70014

Huacheng Li, Wei Lin, Chow-Yen-Desmond Sim

{"title":"Compact Planar Zero-Ground-Clearance End-Fire CP Antenna With Integrated Slow-Wave Structure for Mobile Terminal Applications","authors":"Huacheng Li, Wei Lin, Chow-Yen-Desmond Sim","doi":"10.1049/mia2.70014","DOIUrl":"https://doi.org/10.1049/mia2.70014","url":null,"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. By incorporating a slow-wave (SW) structure in the form of metallised blind via holes within the waveguide, a significant SW effect is achieved, resulting in a 40% reduction in the waveguide longitudinal size compared to the conventional counterpart design. Furthermore, by etching an open-ended slot in the top metallic surface of the waveguide, the edges of its aperture are enabled to generate an electric dipole mode. In this way, the horizontally polarised electric components can be achieved without increasing the antenna's footprint. With the proper combination, the design can effectively achieve the required 90°-phase difference in the end-fire direction for these two components. Finally, a 2.5 GHz antenna was designed and optimised. Aiming to mimic the practical environment of mobile terminal devices, a large metallic ground was adopted under the antenna in the simulation and experiment. The measured results indicated that an overlapped impedance |S11| < −10 and axial ratio (AR < 3) bandwidth of 2.7% from 2.495 to 2.562 GHz is achieved. The proposed antenna shows great potential in wireless communication applications for mobile terminal devices.","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"19 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70014","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Three-Way Wideband Filtering Power Dividers With Enhanced Power Dividing Ratio and High Isolation

IF 1.1 4区计算机科学

Iet Microwaves Antennas & Propagation Pub Date : 2025-04-21 DOI: 10.1049/mia2.70023

Tai-lai Zhang, Lei Liu, Yu Zuo, Zheng-bin Wang

引用次数: 0

Impact of Fuzz Button Degradation on AM and PRBS Signal Transmission

IF 1.1 4区计算机科学

Iet Microwaves Antennas & Propagation Pub Date : 2025-04-19 DOI: 10.1049/mia2.70022

Wenjia Wang, Jinchun Gao, Paolo Manfredi, Igor S. Stievano

{"title":"Impact of Fuzz Button Degradation on AM and PRBS Signal Transmission","authors":"Wenjia Wang, Jinchun Gao, Paolo Manfredi, Igor S. Stievano","doi":"10.1049/mia2.70022","DOIUrl":"https://doi.org/10.1049/mia2.70022","url":null,"abstract":"As elastic electrical connectors, fuzz buttons provide a vertical and solderless electrical interconnection in microwave modules to enhance the integration. However, prolonged use in harsh environments poses a risk of potential failure in electronic components, potentially compromising communication system reliability. This work studies the impact of fuzz button degradation in harsh environments on analog modulation (AM) and pseudo random binary sequence (PRBS) signal transmission using theoretical analysis and experimental testing. Accelerated tests are designed to obtain the fuzz button samples with different degradation levels. The surface morphology observation and elemental analysis are conducted to analyse the degradation mechanism. In addition, a transmission channel with fuzz button interconnections is designed and the corresponding equivalent circuit model is developed. Based on the proposed circuit model, the effects of fuzz button degradation on the integrity of both AM signal and PRBS signal are investigated by analysing the metrics such as waveform, eye diagram and bit error rate (BER) of the output signal. In addition, the effects of the carrier frequency of AM signals, and the transmission rate of the PRBS signals on signal transmission are also investigated. The simulation results of the circuit model show good agreements with experimental tests. The research results provide a better understanding regarding the potentially corrosive effects of harsh environments on fuzz button connectors and the negative effects on the signal integrity. Moreover, the research results provide comprehensive data support for identifying key features that are used for the development of machine learning models for fault diagnosis and localisation in radio frequency (RF) circuits with fuzz button interconnections.","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"19 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70022","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unidirectional Dielectric Resonator Antenna Using 3-D-Printed Uniaxial Anisotropic Ceramic

IF 1.1 4区计算机科学

Iet Microwaves Antennas & Propagation Pub Date : 2025-04-17 DOI: 10.1049/mia2.70019

Carlos David Morales Peña, Audric Boiteau, Christophe Morlaas, Alexandre Chabory, Romain Pascaud, Marjorie Grzeskowiak, Gautier Mazingue

{"title":"Unidirectional Dielectric Resonator Antenna Using 3-D-Printed Uniaxial Anisotropic Ceramic","authors":"Carlos David Morales Peña, Audric Boiteau, Christophe Morlaas, Alexandre Chabory, Romain Pascaud, Marjorie Grzeskowiak, Gautier Mazingue","doi":"10.1049/mia2.70019","DOIUrl":"https://doi.org/10.1049/mia2.70019","url":null,"abstract":"A Huygens source dielectric resonator antenna (DRA) with unidirectional radiation pattern is presented. It consists of a coaxial probe exciting a rectangular, homogeneous and uniaxial anisotropic dielectric resonator (DR). To obtain a Huygens source radiation pattern, a pair of quasi-TM and TE modes are combined by controlling the permittivity tensor of the DR. A prototype operating at 2.5 GHz has been designed. The DR is made up of periodic anisotropic unit cells on a subwavelength scale and fabricated using a three-dimensional (3-D) printer. The simulated and measured results are in reasonable agreement. A relative impedance bandwidth of <math>\u0000 <semantics>\u0000 <mrow>\u0000 <mn>12.5</mn>\u0000 <mi>%</mi>\u0000 </mrow>\u0000 <annotation> $12.5%$</annotation>\u0000 </semantics></math> and a front-to-back ratio larger than 15 dB at operating frequency are finally measured.","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"19 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70019","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143846068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Filter Design Using Ultra-Miniaturised Substrate-Integrated Coaxial Cavity

IF 1.1 4区计算机科学

Iet Microwaves Antennas & Propagation Pub Date : 2025-04-10 DOI: 10.1049/mia2.70017

Min-Hua Ho, Chun-Ming Hung, Chung-I G. Hsu

引用次数: 0

Low-RCS High-Gain Broadband Substrate-Integrated Waveguide Antenna Based on Elliptical Polarisation Conversion Metasurface 基于椭圆极化转换元面的低 RCS 高增益宽带基底集成波导天线

IF 1.1 4区计算机科学

Iet Microwaves Antennas & Propagation Pub Date : 2025-04-08 DOI: 10.1049/mia2.70016

Cuiqin Zhao, Dongya Shen

{"title":"Low-RCS High-Gain Broadband Substrate-Integrated Waveguide Antenna Based on Elliptical Polarisation Conversion Metasurface","authors":"Cuiqin Zhao, Dongya Shen","doi":"10.1049/mia2.70016","DOIUrl":"https://doi.org/10.1049/mia2.70016","url":null,"abstract":"An elliptical polarisation conversion metasurface (PCM) is proposed for Ka-band applications, integrated with a high-gain substrate-integrated waveguide (SIW) antenna to achieve significant radar cross section (RCS) reduction. The PCM elements, arranged in a chessboard configuration, feature a simple yet efficient design with an elliptical pattern symmetric along the diagonal, enabling effective conversion of linearly polarised waves. The antenna employs a broadband dipole excited through SIW slot coupling. Simulation results demonstrate that the PCM unit achieves a polarisation conversion bandwidth of 80.38% (25.3–59.3 GHz) with a polarisation conversion ratio (PCR) exceeding 90%. When integrated with the dipole antenna, the design exhibits a −10 dB impedance bandwidth of 15.08% (33.7–39.2 GHz) and a maximum realised gain of 9.12 dBi, representing a 1.7 dB gain enhancement at 36 GHz. Moreover, the 16 × 16 PCM array configuration achieves an RCS reduction bandwidth of 77.98% (25.85–58.92 GHz), with RCS reduction values exceeding 9 dB across this bandwidth and an average reduction of 12 dB. The proposed antenna has been fabricated and tested, with measured results showing excellent agreement with simulations in terms of <math>\u0000 <semantics>\u0000 <mrow>\u0000 <msub>\u0000 <mi>S</mi>\u0000 <mn>11</mn>\u0000 </msub>\u0000 </mrow>\u0000 <annotation> ${boldsymbol{S}}_{mathbf{11}}$</annotation>\u0000 </semantics></math> and gain performance.","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"19 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70016","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143801485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Extremely Low-Profile Electronically Reconfigurable 1-D X-Band Leaky-Wave Antenna 超薄型电子可重构 1-D X 波段漏波天线

IF 1.1 4区计算机科学

Iet Microwaves Antennas & Propagation Pub Date : 2025-04-04 DOI: 10.1049/mia2.70013

Kevin Kipruto Mutai, Xianbo Cao, Qiang Chen

{"title":"An Extremely Low-Profile Electronically Reconfigurable 1-D X-Band Leaky-Wave Antenna","authors":"Kevin Kipruto Mutai, Xianbo Cao, Qiang Chen","doi":"10.1049/mia2.70013","DOIUrl":"https://doi.org/10.1049/mia2.70013","url":null,"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 direction of the LWA <math>\u0000 <semantics>\u0000 <mrow>\u0000 <mfenced>\u0000 <msub>\u0000 <mi>β</mi>\u0000 <mi>z</mi>\u0000 </msub>\u0000 </mfenced>\u0000 </mrow>\u0000 <annotation> $left({beta }_{z}right)$</annotation>\u0000 </semantics></math> subsequently describing the beam scanning logic in the H-plane. The effectiveness of the proposed approach is evaluated by comparison against full-wave calculations. An extremely low-profile electronically reconfigurable 21-element LWA operating at X-band is then fabricated and measured to validate the proposed concept. The individual antenna element making up the array is designed at X-band and is capable of switching between radiating and non-radiating states by use of a PIN diode used to control the resonant frequency of the element. The limitations of both the proposed approach and the antenna are also evaluated.","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"19 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70013","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143778223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Three-Dimensional Integral Equation-based GSTC Method for Composite Structure With Arbitrary-Shaped Nonpenetrating Metasurface

IF 1.1 4区计算机科学

Iet Microwaves Antennas & Propagation Pub Date : 2025-03-27 DOI: 10.1049/mia2.70012

Inhwan Kim, Yeonghoon Noh, Hyeong-Rae Im, Ic-Pyo Hong, Hyunsoo Lee, Jong-Gwan Yook

{"title":"Three-Dimensional Integral Equation-based GSTC Method for Composite Structure With Arbitrary-Shaped Nonpenetrating Metasurface","authors":"Inhwan Kim, Yeonghoon Noh, Hyeong-Rae Im, Ic-Pyo Hong, Hyunsoo Lee, Jong-Gwan Yook","doi":"10.1049/mia2.70012","DOIUrl":"https://doi.org/10.1049/mia2.70012","url":null,"abstract":"This study proposes a novel three-dimensional integral-equation-based electromagnetic solver with surface susceptibilities of metasurfaces that satisfy the generalised sheet transition conditions (GSTCs). The metasurface is replaced by an equivalent zero-thickness sheet with surface susceptibilities, which can be extracted using the retrieval method deduced from the GSTCs. We consider the problems of composite structures with metasurfaces for greater generality and applicability. The integral equations of the problems are formulated and discretised using Rao–Wilton–Glisson (RWG) basis functions through Galerkin's testing procedure. We also propose a technique for enforcing the boundary condition at the interface, which should be carefully considered within the problem formulation of composite structures. The proposed method is validated by using a circuit-analog-based absorber to extract the surface susceptibilities. Composite structures, including flat and curved metasurfaces, are employed to verify the IE-GSTC solver, and numerical simulation results are compared with those obtained from a commercial finite-element method-based simulation (FEM-HFSS).","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"19 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70012","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143717411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research on Aperture-Level Simultaneous Transceiver Technology Utilising an Improved Quantum Genetic Algorithm

IF 1.1 4区计算机科学

Iet Microwaves Antennas & Propagation Pub Date : 2025-03-21 DOI: 10.1049/mia2.70011

Yong Bo, Hong Cao, Mouping Jin, Quan Wang, Wei Chen, Yong Ye, Lixia Yang

{"title":"Research on Aperture-Level Simultaneous Transceiver Technology Utilising an Improved Quantum Genetic Algorithm","authors":"Yong Bo, Hong Cao, Mouping Jin, Quan Wang, Wei Chen, Yong Ye, Lixia Yang","doi":"10.1049/mia2.70011","DOIUrl":"https://doi.org/10.1049/mia2.70011","url":null,"abstract":"Self-interference (SI) suppression has always been critical for simultaneous transmit and receive (STAR) systems. To address the strong coupling between nearby transmit and receive antennas, this study employs an improved quantum genetic algorithm (IQGA) to eliminate SI by combining digital self-interference cancellation (SIC) and adaptive beamforming (ABF). Through digital SIC, both transmit noise and transmit signals are suppressed. The objective of the transceiver beamformer is to further reduce SI through SIC while simultaneously achieving high transceiver gain in the desired direction. IQGA represents the weights of feasible transceiver beams using chromosomes. By updating the population through quantum rotation, quantum crossover and quantum mutation strategies, IQGA demonstrates improvements in convergence accuracy, convergence speed, and reliability. In comparison to traditional ABF approaches, IQGA eliminates the need for complex matrix calculations and numerical derivations, thereby simplifying the solution process. The simulation results indicate that by cancelling the SI component through SIC and ABF, an isolation of 159.78 dB can be achieved at a transmit power of 1000 W. This represents an improvement of 40.32 dB compared to SIC alone and 113.87 dB compared to scenarios without SIC and ABF.","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"19 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70011","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143689411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0