IEEE microwave and wireless technology letters最新文献_第8页

A Novel Wideband HTS BPF With Enhanced Frequency Selectivity and Stopband Rejection 一种增强频率选择性和阻带抑制的新型宽带HTS BPF

IF 3.4

IEEE microwave and wireless technology letters Pub Date : 2026-09-01 Epub Date: 2026-04-13 DOI: 10.1109/LMWT.2025.3601719

Linping Feng;Jinhai Tang;Xinhua Yu;Lei Zhu;Yinggang Li

{"title":"A Novel Wideband HTS BPF With Enhanced Frequency Selectivity and Stopband Rejection","authors":"Linping Feng;Jinhai Tang;Xinhua Yu;Lei Zhu;Yinggang Li","doi":"10.1109/LMWT.2025.3601719","DOIUrl":"https://doi.org/10.1109/LMWT.2025.3601719","url":null,"abstract":"This letter introduces a novel high-temperature superconducting (HTS) high-order wideband bandpass filter (BPF) with high-passband selectivity and deep stopband rejection. The proposed filter design employs the terminated coupled-line structures (TCLS) to achieve the desired performance characteristics. Initially, we elaborate on the working principle of the utilized TCLS, consisting of a coupled line with four terminals. In contrast to the conventional methods, our approach involves loading a cascade circuit onto two terminals of the coupled line to create two pairs of transmission zeros. In addition, one terminal of the coupled lines is short-circuited to further enhance stopband rejection and bandwidth steepness. Subsequently, we conduct a theoretical analysis of the adopted terminated coupled line structures to validate the feasibility of the approach. The proposed HTS filter is designed to operate at 3.6 GHz, and has a fractional bandwidth of 39%, a lower stopband rejection of 61 dB, an upper stopband rejection of 20 dB, and compact dimensions (<inline-formula> <tex-math>$0.327lambda _{text {g}} times 0.147lambda _{text {g}}$ </tex-math></inline-formula>) on a MgO substrate. Good agreement is observed between the simulated results and the measured ones, which demonstrates good achixevement of the desired performance of the proposed filter.","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"36 9","pages":"1390-1393"},"PeriodicalIF":3.4,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148902961","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 publication IEEE微波与无线技术通讯出版

IF 3.4

IEEE microwave and wireless technology letters Pub Date : 2026-09-01 Epub Date: 2026-09-04 DOI: 10.1109/LMWT.2026.3725452

引用次数: 0

An Integrated Scheme of Convolutional Neural Network and Neural Ordinary Differential Equation of Harmonic Cancellation Digital Predistortion for High-Frequency Power Amplifier 一种基于卷积神经网络和神经常微分方程的高频功率放大器谐波抵消数字预失真集成方案

IF 3.4

IEEE microwave and wireless technology letters Pub Date : 2026-09-01 Epub Date: 2026-04-21 DOI: 10.1109/LMWT.2026.3683769

Jijun Ren;Xin Xue;Mengyang Zhu;Gege Feng;Yukang Li

引用次数: 0

A Reconfigurable Metasurface for Real-Time Dynamic Control of EM Wave in Microwave Systems 一种用于微波系统中电磁波实时动态控制的可重构元表面

IF 3.4

IEEE microwave and wireless technology letters Pub Date : 2026-09-01 Epub Date: 2026-04-07 DOI: 10.1109/LMWT.2026.3681196

Patinavalasa Megh Sainadh;Saptarshi Ghosh

{"title":"A Reconfigurable Metasurface for Real-Time Dynamic Control of EM Wave in Microwave Systems","authors":"Patinavalasa Megh Sainadh;Saptarshi Ghosh","doi":"10.1109/LMWT.2026.3681196","DOIUrl":"https://doi.org/10.1109/LMWT.2026.3681196","url":null,"abstract":"This letter presents a polarization-insensitive reconfigurable metasurface (RMS) that switches among multiple electromagnetic (EM) states using a field-programmable gate array (FPGA), tested in a parallel plate waveguide (PPW). The proposed geometry comprises metallic patterns and p-i-n diodes on the top and bottom of a dielectric substrate, enabling four combinations: <sc>off–off, off–on, on–off, and <sc>on–on. In the <sc>off–off mode, transmission is achieved at 5.07 GHz with an insertion loss of 1.4 dB, whereas an absorption occurs at 5.2 GHz in <sc>off–on mode. The reflective behavior is observed in <sc>on–off and <sc>on–on modes, operating up to 6 and 8 GHz, respectively. The design is analyzed using circuit modeling and evaluated under normal and oblique incidence. A 1-D array is fabricated and integrated with the FPGA to regulate the diodes in different modes. The prototype is measured using the PPW technique, and the experimental results closely align with simulations, demonstrating the effectiveness of the dynamically controlled RMS design in microwave systems.","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"36 9","pages":"1426-1429"},"PeriodicalIF":3.4,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148902780","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

Deep Learning-Assisted Design of Doherty Power Amplifiers Using Discretized Topology 基于离散拓扑的Doherty功率放大器深度学习辅助设计

IF 3.4

IEEE microwave and wireless technology letters Pub Date : 2026-09-01 Epub Date: 2026-04-01 DOI: 10.1109/LMWT.2026.3677385

Mingyu Liu;Yongwen Yin;Yanzhou Qu;Longhao Li;Leyan Wan;Min Xiong;Changjiang Xu;Yijie Tang;Chuan Li;Fei You;Songbai He

引用次数: 0

High-Power Circulator Design and Performance Analysis in Extreme Temperature Environments 极端温度环境下大功率环行器设计与性能分析

IF 3.4

IEEE microwave and wireless technology letters Pub Date : 2026-09-01 Epub Date: 2026-04-23 DOI: 10.1109/LMWT.2026.3685633

Mohamed Mamdouh M. Ali;Syed M. Sifat;L. Talbi;Gada Saad

引用次数: 0

A 32-Gb/s Continuous Time Linear Equalizer With Programmable Active Inductors Technique for Wide Channel Loss Compensation 基于可编程有源电感技术的32gb /s连续时间线性均衡器用于宽通道损耗补偿

IF 3.4

IEEE microwave and wireless technology letters Pub Date : 2026-09-01 Epub Date: 2026-04-22 DOI: 10.1109/LMWT.2026.3683504

Liu Wang;Chang Liu;Xiaoguang Liu;Zexin Su;Xiao Ma;Sheng Hu;Yao Liu;Franco Maloberti;Bo Li

引用次数: 0

Design of Broadband Linearity-Enhanced Doherty Power Amplifier Using Complex Combining Load Impedance 基于复合负载阻抗的宽带线性增强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: 2026-03-31 DOI: 10.1109/LMWT.2026.3678047

Yusha Lin;Weimin Shi;Zhenxing Yang;Fan Gao;Mingyu Li

{"title":"Design of Broadband Linearity-Enhanced Doherty Power Amplifier Using Complex Combining Load Impedance","authors":"Yusha Lin;Weimin Shi;Zhenxing Yang;Fan Gao;Mingyu Li","doi":"10.1109/LMWT.2026.3678047","DOIUrl":"https://doi.org/10.1109/LMWT.2026.3678047","url":null,"abstract":"This letter presents a design method for a broadband linearity-enhanced Doherty power amplifier (DPA). A modified Doherty combiner is adopted to mitigate the amplitude-to-amplitude (AM-AM) and amplitude-to-phase (AM-PM) distortions of the DPA, while a complex combining impedance is utilized to optimize the back-off efficiency over a wide bandwidth. The theoretical relationships between AM-AM/ PM and Doherty combiner parameters are derived to implement a high-linear broadband DPA, which operates in the frequency band of 0.95–1.21 GHz (a relative bandwidth of 24.1%). In this frequency band, the fabricated DPA achieves a saturation output power of 39.7–41 dBm, a saturation drain efficiency (DE) of 66%–74.7%, and a 6-dB back-off DE of 43.5%–53.4% when under excitation of a continuous-wave (CW) signal. Furthermore, when driven by a 30-MHz 64-QAM signal with a peak-to-average power ratio (PAPR) of 6.8 dB, at an average output power of approximately 33 dBm, the measured EVMs are better than 2.45% and the adjacent channel leakage ratios (ACLRs) are better than −38.3 dBc in the operating band without any digital predistortion (DPD) techniques.","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"36 9","pages":"1466-1469"},"PeriodicalIF":3.4,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148903097","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

Wideband Balanced Bandpass Filters With Superior In-Band Common-Mode Rejection 宽带平衡带通滤波器与优越的带内共模抑制

IF 3.4

IEEE microwave and wireless technology letters Pub Date : 2026-09-01 Epub Date: 2026-03-25 DOI: 10.1109/LMWT.2026.3675214

Chuan Shao;Guo-Qi Zhang;Xian-Zhen Dou;Rong Cai;Guang-Ming Chang;Kai Xu

{"title":"Wideband Balanced Bandpass Filters With Superior In-Band Common-Mode Rejection","authors":"Chuan Shao;Guo-Qi Zhang;Xian-Zhen Dou;Rong Cai;Guang-Ming Chang;Kai Xu","doi":"10.1109/LMWT.2026.3675214","DOIUrl":"https://doi.org/10.1109/LMWT.2026.3675214","url":null,"abstract":"In this letter, a series of wideband balanced bandpass filters with superior in-band common-mode (CM) rejection has been designed and implemented, simultaneously exhibiting excellent differential-mode (DM) responses. The developed balanced bandpass filters originate from a traditional branch-line balanced filter. The merit of this topology lies in the DM equivalent circuit showing an intrinsic bandpass response, whereas the CM equivalent circuit presents a built-in bandstop response. By adjusting the coupling coefficient of the parallel-coupled lines and the characteristic impedances of the remaining sections, the developed balanced bandpass filter demonstrates a 37% fractional bandwidth for the differential mode and an in-band CM suppression greater than 50 dB over the 41% bandwidth. Moreover, to broaden the CM rejection bandwidth, a quarter-wavelength open-circuit stub was asymmetrically attached to the center of the developed filter. With the stub introduced, two extra transmission zeros emerge in the CM response, extending the bandwidth over which CM signals are suppressed. To verify the concept, two balanced bandpass filters were designed, fabricated, and measured.","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"36 9","pages":"1394-1397"},"PeriodicalIF":3.4,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148903149","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 W-Band Full-Coverage CMOS Power Amplifier Using Coupled-Line-Based Combining Network 基于耦合线组合网络的w波段全覆盖CMOS功率放大器

IF 3.4

IEEE microwave and wireless technology letters Pub Date : 2026-09-01 Epub Date: 2026-04-13 DOI: 10.1109/LMWT.2026.3681879

Mengru Yang;Dixian Zhao

引用次数: 0