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IEEE microwave and wireless technology letters最新文献

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Plane-of-Interest Metrics-Guided Flexible Near-Field Sensor for Wrist-Worn Self-Injection-Locked Radar 用于腕戴式自注入锁定雷达的感兴趣面制导柔性近场传感器
IF 3.4
IEEE microwave and wireless technology letters Pub Date : 2026-09-01 Epub Date: 2026-03-31 DOI: 10.1109/LMWT.2026.3676890
Haotian Shi;Yuhan Fan;Bo Wang;Yongxin Guo
{"title":"Plane-of-Interest Metrics-Guided Flexible Near-Field Sensor for Wrist-Worn Self-Injection-Locked Radar","authors":"Haotian Shi;Yuhan Fan;Bo Wang;Yongxin Guo","doi":"10.1109/LMWT.2026.3676890","DOIUrl":"https://doi.org/10.1109/LMWT.2026.3676890","url":null,"abstract":"Wearable self-injection-locked (SIL) radar requires near-field sensors that preserve injection coupling at a millimeter-scale gap under bending and placement variations. This letter introduces plane-of-interest metrics, including uniform-field coverage (UFC), relative standard deviation (RSD), and bending robustness factor <inline-formula> <tex-math>$rho _{A}$ </tex-math></inline-formula>, to guide robustness-oriented design of ultra-thin flexible near-field sensor for 5.8-GHz SIL wrist sensing, and demonstrates the workflow with a slot-type implementation on polyimide. Full-wave results show that slot-type implementation maintains a strong and spatially uniform field distribution on the plane of interest under wrist-like curvature. System measurements across multiple bending radii and alignment offsets on the same SIL radar platform confirm a robustness trend consistent with the <inline-formula> <tex-math>$rho _{A}$ </tex-math></inline-formula> ranking.","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"36 9","pages":"1526-1529"},"PeriodicalIF":3.4,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148902680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
IEEE Microwave and Wireless Technology Letters Information for Authors IEEE微波与无线技术通讯作者信息
IF 3.4
IEEE microwave and wireless technology letters Pub Date : 2026-09-01 Epub Date: 2026-09-04 DOI: 10.1109/LMWT.2026.3725448
{"title":"IEEE Microwave and Wireless Technology Letters Information for Authors","authors":"","doi":"10.1109/LMWT.2026.3725448","DOIUrl":"https://doi.org/10.1109/LMWT.2026.3725448","url":null,"abstract":"","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"36 9","pages":"C3-C3"},"PeriodicalIF":3.4,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11679492","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148902725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Inverse Design of Triangular-Pixelated Spoof Plasmon Resonator Based on Machine Learning 基于机器学习的三角像素欺骗等离子体谐振器反设计
IF 3.4
IEEE microwave and wireless technology letters Pub Date : 2026-09-01 Epub Date: 2026-04-14 DOI: 10.1109/LMWT.2026.3682872
Jian-Hong Fu;Wei Shao;Zhao-Qing Xu;Xiao Zheng;Haiyan Ou;Li-Ye Xiao
{"title":"Inverse Design of Triangular-Pixelated Spoof Plasmon Resonator Based on Machine Learning","authors":"Jian-Hong Fu;Wei Shao;Zhao-Qing Xu;Xiao Zheng;Haiyan Ou;Li-Ye Xiao","doi":"10.1109/LMWT.2026.3682872","DOIUrl":"https://doi.org/10.1109/LMWT.2026.3682872","url":null,"abstract":"This letter proposes a machine learning-based inverse design method for realizing the optimal design of spoof localized surface plasmon (SLSP) resonance sensors. The method adopts triangular pixelated grids for the discretized modeling of SLSP units and overcomes the quantization error of the rectangular pixel method in fitting complex geometric boundaries. To capture the topological correlation among irregular pixels, this letter introduces the multilayer perceptron (MLP)-Mixer neural network to establish an inverse mapping between the <inline-formula> <tex-math>$S$ </tex-math></inline-formula>-parameter response and the geometric configuration. The model can directly generate the corresponding triangular pixel arrangement according to the input target resonance curve, without the iterative full-wave simulations called by an optimization algorithm. Experiments demonstrate that the designed structures can achieve highly localized electric field enhancement in the working region and exhibit remarkable resonance frequency shifts in response to minor variations in the refractive index of the covering dielectric, with a high sensitivity of 5.52%.","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"36 9","pages":"1430-1433"},"PeriodicalIF":3.4,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148902775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Monoblock Inline Dielectric Waveguide Filters With Flexible Mixed Electromagnetic Coupling Based on a Novel Dual-Blind-Hole Structure 基于新型双盲孔结构的柔性混合电磁耦合单块内嵌介质波导滤波器
IF 3.4
IEEE microwave and wireless technology letters Pub Date : 2026-09-01 Epub Date: 2026-07-30 DOI: 10.1109/LMWT.2026.3717149
Fan Liu;Shenggen Deng;Jie Li;Zhili Liu;Zhewang Ma;Eng-Hock Lim;Sai-Wai Wong
{"title":"Monoblock Inline Dielectric Waveguide Filters With Flexible Mixed Electromagnetic Coupling Based on a Novel Dual-Blind-Hole Structure","authors":"Fan Liu;Shenggen Deng;Jie Li;Zhili Liu;Zhewang Ma;Eng-Hock Lim;Sai-Wai Wong","doi":"10.1109/LMWT.2026.3717149","DOIUrl":"https://doi.org/10.1109/LMWT.2026.3717149","url":null,"abstract":"In this letter, the monoblock inline dielectric waveguide filters (DWFs) with flexible mixed electromagnetic coupling (MEMC) are accurately designed using a novel dual-blind-hole structure. The coupling behavior of the dual-blind-hole structure is systematically analyzed, revealing that the MEMC can be effectively controlled by adjusting the depths and offsets of the dual-blind-hole structure, thereby enabling precise placement of transmission zeros (TZs) while maintaining an inline layout of the DWFs. To demonstrate the design concepts, three four-pole DWFs operating at 3.5 GHz, each exhibiting three TZs at different frequency locations, are designed, and one of them is fabricated and measured. Good agreement between the simulated and measured responses is observed, thereby validating the proposed design concepts.","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"36 9","pages":"1454-1457"},"PeriodicalIF":3.4,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148903172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Design of Broadband Balanced Doherty Power Amplifier for Compensating Load Mismatch 补偿负载失配的宽带平衡多尔蒂功率放大器设计
IF 3.4
IEEE microwave and wireless technology letters Pub Date : 2026-09-01 Epub Date: 2026-04-16 DOI: 10.1109/LMWT.2026.3681718
Yufeng Zang;Weimin Shi;Zhenxing Yang;Yi Jin;Jingzhou Pang;Mingyu Li
{"title":"Design of Broadband Balanced Doherty Power Amplifier for Compensating Load Mismatch","authors":"Yufeng Zang;Weimin Shi;Zhenxing Yang;Yi Jin;Jingzhou Pang;Mingyu Li","doi":"10.1109/LMWT.2026.3681718","DOIUrl":"https://doi.org/10.1109/LMWT.2026.3681718","url":null,"abstract":"This letter presents the design of a broadband, control-free, and load-insensitive load-modulated power amplifier (LMPA), termed the balanced-Doherty power amplifier (BDPA). The BDPA combines the advantages of both the balanced and Doherty power amplifiers (PAs), enabling it to operate against load mismatch without the need for any control techniques. A broadband BDPA is designed and fabricated using broadband symmetrical DPAs and two-stage 90° branch-line couplers. Under a matching condition, the fabricated BDPA achieves an output power of 43.2–44.2 dBm, a saturation drain efficiency (DE) of 58.3%–69.0%, and an 8-dB back-off DE of 49.1%–57.1% over 1.75–2.15 GHz. When the load impedance varies on the 2:1 VSWR circle, the fabricated BDPA delivers a saturation output power of 42.2–43.8 dBm with a DE of 49.1%–61.5% in the frequency range of 1.75–2.15 GHz. And at the 8-dB back-off power level, the mismatched BDPA maintains a DE of 40.4%–51.7%.","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"36 9","pages":"1462-1465"},"PeriodicalIF":3.4,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148903174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cascaded Neural Network-Based Inverse Design of Common-Mode Suppression Filters 基于级联神经网络的共模抑制滤波器反设计
IF 3.4
IEEE microwave and wireless technology letters Pub Date : 2026-09-01 Epub Date: 2026-04-23 DOI: 10.1109/LMWT.2026.3685597
Qing-Song Fu;Yi-Hao Ma;Wen-Yong Zhou;Da-Wei Wang;Yue Hu;Wen-Sheng Zhao
{"title":"Cascaded Neural Network-Based Inverse Design of Common-Mode Suppression Filters","authors":"Qing-Song Fu;Yi-Hao Ma;Wen-Yong Zhou;Da-Wei Wang;Yue Hu;Wen-Sheng Zhao","doi":"10.1109/LMWT.2026.3685597","DOIUrl":"https://doi.org/10.1109/LMWT.2026.3685597","url":null,"abstract":"Common-mode suppression filters (CMFs) play an important role in high-speed circuits and RF systems by effectively suppressing common-mode (CM) noise and improving signal quality. However, traditional CMF design methods typically rely on extensive electromagnetic simulations, which are computationally complex and time-consuming. To address these issues, this letter proposes a cascaded neural network (CasNN)-based inverse design method for CMF, which can directly predict geometric parameters according to design demands and effectively alleviate the excessive training loss caused by the nonuniqueness of the inverse mapping. In addition, to improve the imbalance in training data distribution, the multilabel synthetic minority oversampling technique (MLSMOTE) is introduced to augment samples in sparse regions of the dataset. Experimental results validate the effectiveness and feasibility of the proposed method.","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"36 9","pages":"1398-1401"},"PeriodicalIF":3.4,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148902643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A 1.7--8.0 GHz Broadband MMIC Power Amplifier With a Novel Harmonic-Controlled Power Combining Network 一种1.7—8.0 GHz宽带MMIC功率放大器及新型谐波控制功率组合网络
IF 3.4
IEEE microwave and wireless technology letters Pub Date : 2026-09-01 Epub Date: 2026-04-13 DOI: 10.1109/LMWT.2026.3681796
Kaiyuan Du;Ding He;Shaoqing Sun;Huxiang Xia;Zhongjun Yu
{"title":"A 1.7--8.0 GHz Broadband MMIC Power Amplifier With a Novel Harmonic-Controlled Power Combining Network","authors":"Kaiyuan Du;Ding He;Shaoqing Sun;Huxiang Xia;Zhongjun Yu","doi":"10.1109/LMWT.2026.3681796","DOIUrl":"https://doi.org/10.1109/LMWT.2026.3681796","url":null,"abstract":"This letter presents a broadband high-efficiency power amplifier (PA) using a harmonic-controlled power-combining (HCPC) network. The HCPC is derived from a fourth-order ladder-type LC impedance transformation network with a distributed transmission-line implementation, enabling broadband power combining, output matching, and second-harmonic control in a compact structure. By exploiting the stopband behavior of the ladder network and a harmonic-controlled transformer, a high second-harmonic impedance is presented to the transistor to enhance efficiency. The HCPC is implemented in a three-stage stagger-tuned PA fabricated in a 0.25-<inline-formula> <tex-math>$mu $ </tex-math></inline-formula>m GaAs pHEMT process. Measurements show a small-signal gain of 26–29 dB, a saturated output power of 33.8–36.1 dBm, and a peak PAE of 48% over 1.7–8.0 GHz.","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"36 9","pages":"1478-1481"},"PeriodicalIF":3.4,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148902719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A 6--18-GHz, 10-W GaN Balanced Power Amplifier Employing Harmonic Suppression and Harmonic Phase-Control Techniques 一种采用谐波抑制和谐波相位控制技术的6—18ghz， 10w GaN平衡功率放大器
IF 3.4
IEEE microwave and wireless technology letters Pub Date : 2026-09-01 Epub Date: 2026-03-31 DOI: 10.1109/LMWT.2026.3676418
Yusheng Sun;Liang Zhao;Youming Zhang;Xusheng Tang;Fengyi Huang
{"title":"A 6--18-GHz, 10-W GaN Balanced Power Amplifier Employing Harmonic Suppression and Harmonic Phase-Control Techniques","authors":"Yusheng Sun;Liang Zhao;Youming Zhang;Xusheng Tang;Fengyi Huang","doi":"10.1109/LMWT.2026.3676418","DOIUrl":"https://doi.org/10.1109/LMWT.2026.3676418","url":null,"abstract":"This letter presents a 6–18-GHz, 10-W balanced power amplifier (BPA) monolithic microwave integrated circuit (MMIC) fabricated in a 0.25-<inline-formula> <tex-math>$mu $ </tex-math></inline-formula>m gallium nitride on silicon carbide (GaN-on-SiC) high-electron-mobility transistor (HEMT) process. To meet the stringent harmonic suppression requirements of ultrawideband radar, electronic-warfare systems, and satellite-communication applications, a modified elliptic-filter output matching network is proposed and combined with a harmonic phase-control technique to boost power-added efficiency (PAE) and pout uniformly across the full band. Under continuous-wave measurement conditions, the MMIC delivers a power gain of 19.7–21.2 dB, a saturated output power of 40.2–41.1 dBm, and a PAE of 24%–36% over the entire 6–18-GHz band. Second-harmonic suppression (H2S) is −45.6 dB at 10 GHz, and spurious-emission suppression exceeds 70 dB. The DC supply voltage is 24 V, and the core chip occupies 15.2 mm<sup>2</sup>, demonstrating a highly compact balanced architecture.","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"36 9","pages":"1474-1477"},"PeriodicalIF":3.4,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148902803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Transmissive Metasurface for OAM Vortex Beam Generation in the 77-GHz Automotive Radar Band 77 ghz汽车雷达波段OAM涡旋波束产生的透射超表面
IF 3.4
IEEE microwave and wireless technology letters Pub Date : 2026-09-01 Epub Date: 2026-03-31 DOI: 10.1109/LMWT.2026.3677504
Qingyan Guo;Xuejuan Long;Rujian Li;Rui Tang;Ying Zhan
{"title":"A Transmissive Metasurface for OAM Vortex Beam Generation in the 77-GHz Automotive Radar Band","authors":"Qingyan Guo;Xuejuan Long;Rujian Li;Rui Tang;Ying Zhan","doi":"10.1109/LMWT.2026.3677504","DOIUrl":"https://doi.org/10.1109/LMWT.2026.3677504","url":null,"abstract":"This letter presents a transmissive metasurface for generating orbital angular momentum (OAM) vortex beams in the 77-GHz automotive radar band. The unit cell features a central cross-shaped patch surrounded by a circular resonant ring, implemented on a multilayer Rogers RT/duroid 5880 substrate. This configuration enables continuous <inline-formula> <tex-math>$0pi $ </tex-math></inline-formula>–<inline-formula> <tex-math>$2pi $ </tex-math></inline-formula> transmission phase coverage with an amplitude above 0.7 across 76–81 GHz. A <inline-formula> <tex-math>$21times 21$ </tex-math></inline-formula>-element array was fabricated and characterized experimentally. Measurements confirm the generation of a +1-mode OAM beam over the full automotive band, with mode purity exceeding 70%, a half-power beamwidth of approximately 9°, and a peak gain exceeding 20 dBi.","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"36 9","pages":"1434-1437"},"PeriodicalIF":3.4,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148903041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Self-Packaged Closed-Loop Adaptive RF Equalizer With Continuous Bidirectional Slope Tuning 具有连续双向斜率调谐的自封装闭环自适应射频均衡器
IF 3.4
IEEE microwave and wireless technology letters Pub Date : 2026-09-01 Epub Date: 2026-04-21 DOI: 10.1109/LMWT.2026.3684914
Yongping Xiao;Runlin Zhang;Tao Tang
{"title":"A Self-Packaged Closed-Loop Adaptive RF Equalizer With Continuous Bidirectional Slope Tuning","authors":"Yongping Xiao;Runlin Zhang;Tao Tang","doi":"10.1109/LMWT.2026.3684914","DOIUrl":"https://doi.org/10.1109/LMWT.2026.3684914","url":null,"abstract":"This letter presents a self-packaged adaptive radio frequency (RF) amplitude equalizer with on-module closed-loop compensation. The module integrates a continuously tunable bidirectional-slope equalizer, a directional coupler with logarithmic detection, a temperature sensor, and a microcontroller for local control. A temperature–frequency lookup table provides the baseline setting, while a low-rate built-in self-test (BIST) update tracks long-term drift. A fabricated prototype demonstrates continuous slope tuning from −10 to +10 dB over 0.3–1.2 GHz. With closed-loop compensation enabled, the additional gain variation is maintained within ±0.5 dB from <inline-formula> <tex-math>$-55~^{circ }mathrm {C}$ </tex-math></inline-formula> to <inline-formula> <tex-math>$+85~^{circ }mathrm {C}$ </tex-math></inline-formula>, validating a compact RF building block for unattended field operation.","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"36 9","pages":"1506-1509"},"PeriodicalIF":3.4,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148903050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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