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A 130%-Tuning-Range Switchable Tri-Core Voltage-Controlled Oscillator Utilizing Reconfigurable Matching and Phase Compensation 利用可重构匹配和相位补偿的 130% 调谐范围可切换三核压控振荡器
IEEE microwave and wireless technology letters Pub Date : 2024-09-20 DOI: 10.1109/LMWT.2024.3455793
Qiang Ma;Xiaojun Bi;Andy Shen;Chang Wu;Jielong Liu;Qinfen Xu
{"title":"A 130%-Tuning-Range Switchable Tri-Core Voltage-Controlled Oscillator Utilizing Reconfigurable Matching and Phase Compensation","authors":"Qiang Ma;Xiaojun Bi;Andy Shen;Chang Wu;Jielong Liu;Qinfen Xu","doi":"10.1109/LMWT.2024.3455793","DOIUrl":"https://doi.org/10.1109/LMWT.2024.3455793","url":null,"abstract":"This letter presents a switchable tri-core voltage-controlled oscillator (VCO) with 130% frequency tuning range (FTR). Utilizing the reconfigurable compensation stubs and reused varactors, three VCO cores are combined to achieve the switchable-free running frequency, while the FTR is greatly enlarged and the phase noise (PN) is almost unaffected.","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"34 11","pages":"1259-1262"},"PeriodicalIF":0.0,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142594951","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
Full Bandpass Filter Reconfigurability Through Liquid Metal Tuning and a Novel External Coupling Technique 通过液态金属调谐和新型外部耦合技术实现全带通滤波器的可重构性
IEEE microwave and wireless technology letters Pub Date : 2024-09-20 DOI: 10.1109/LMWT.2024.3457965
Alex Pham;Hjalti H. Sigmarsson
{"title":"Full Bandpass Filter Reconfigurability Through Liquid Metal Tuning and a Novel External Coupling Technique","authors":"Alex Pham;Hjalti H. Sigmarsson","doi":"10.1109/LMWT.2024.3457965","DOIUrl":"https://doi.org/10.1109/LMWT.2024.3457965","url":null,"abstract":"An innovative filter design with full independent control of the center frequency, bandwidth, and response ripple is demonstrated utilizing only liquid-metal actuation. This is realized on substrate-integrated waveguide (SIW) technology with tunable evanescent cavity resonators coupled by an adaptable inductive iris design. A novel external coupling mechanism utilizing liquid-metal tuning posts on the filter input/output is presented. The fully reconfigurable filter design has a center frequency tuning range of 4.5–5.6 GHz with bandwidths ranging from 198 to 599 MHz. The response shape is reconfigurable between Butterworth and equi-ripple responses at all frequency and bandwidth states. Agreement between experimental results and simulation validate the effectiveness of this highly reconfigurable filter design and the capabilities of liquid metal for adaptive coupling mechanisms.","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"34 11","pages":"1231-1234"},"PeriodicalIF":0.0,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595088","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
270-GHz Radiator Module for Eight-Way Incoherent Power Combining of InP HBT Oscillators 用于 InP HBT 振荡器八路非相干功率组合的 270-GHz 辐射器模块
IEEE microwave and wireless technology letters Pub Date : 2024-09-18 DOI: 10.1109/LMWT.2024.3439715
Y. K. Koh;M. Kim
{"title":"270-GHz Radiator Module for Eight-Way Incoherent Power Combining of InP HBT Oscillators","authors":"Y. K. Koh;M. Kim","doi":"10.1109/LMWT.2024.3439715","DOIUrl":"https://doi.org/10.1109/LMWT.2024.3439715","url":null,"abstract":"This article presents a metallic radiator module, \u0000<inline-formula> <tex-math>$11.5times 5.6times 2.5$ </tex-math></inline-formula>\u0000 cm3 in size, designed to direct terahertz power with a 26° circularly symmetric radiation beam. The module combines the power from eight identical integrated oscillator chips in free space using a linear array of built-in circular horns with 17-dB gain. The oscillators operating at unlocked frequencies produce an average power of 3.5 dBm within the 268–274 GHz range. When all elements are activated, the radiator module maintains the same radiation patterns as the individual elements, achieving a total radiated power of 12.5 dBm, which represents an eightfold increase from the average power per element.","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"34 11","pages":"1282-1285"},"PeriodicalIF":0.0,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595063","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
Measurement of Complex Permittivity in 0.11–0.27 THz With a Novel Multichannel-Coupled Open Resonator 利用新型多通道耦合开放式谐振器测量 0.11-0.27 太赫兹的复导率
IEEE microwave and wireless technology letters Pub Date : 2024-09-16 DOI: 10.1109/LMWT.2024.3437422
Jin Cheng;Yunpeng Zhang;Jiawei Long;Chengyong Yu;Chong Gao;Hu Zheng;En Li;Lin Qin;Xiangbao Zhu
{"title":"Measurement of Complex Permittivity in 0.11–0.27 THz With a Novel Multichannel-Coupled Open Resonator","authors":"Jin Cheng;Yunpeng Zhang;Jiawei Long;Chengyong Yu;Chong Gao;Hu Zheng;En Li;Lin Qin;Xiangbao Zhu","doi":"10.1109/LMWT.2024.3437422","DOIUrl":"https://doi.org/10.1109/LMWT.2024.3437422","url":null,"abstract":"In this letter, a novel multichannel-coupled open resonator for terahertz (THz) wider frequency range measurement is proposed. The coupling of the THz open resonator is carried out through the cooperation between the PCB coupling sheet and the pressurized flange. The operating frequency of the resonator is extended through the multichannel coupling technology under one cavity. Moreover, an improved plane mirror with a slit and an inspiratory structure is designed to enhance the stability of measurement in the THz range. The proposed system and method are of great significance for characterizing the dielectric property frequency dependence of materials in the THz range.","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"34 11","pages":"1297-1300"},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142594983","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
Gradient-Adaptive 2-D LUT Method for 6G Flexible-Duplex 用于 6G 灵活双工的梯度自适应 2-D LUT 方法
IEEE microwave and wireless technology letters Pub Date : 2024-09-10 DOI: 10.1109/LMWT.2024.3452491
Vesa Lampu;Lauri Anttila;Matias Turunen;Mikko Valkama
{"title":"Gradient-Adaptive 2-D LUT Method for 6G Flexible-Duplex","authors":"Vesa Lampu;Lauri Anttila;Matias Turunen;Mikko Valkama","doi":"10.1109/LMWT.2024.3452491","DOIUrl":"https://doi.org/10.1109/LMWT.2024.3452491","url":null,"abstract":"In this letter, we propose a novel self-interference (SI) cancellation solution for asymmetric in-band full-duplex (IBFD) systems, where the downlink (DL) signals are noncontiguously aggregated within the available band. The method builds on a Hammerstein model with parallel spline-interpolated 2-D lookup tables (LUTs), together with efficient gradient-descent parameter learning rules. The provided RF measurement results harnessing a GaN Doherty power amplifier (PA) at 3.5 GHz demonstrate digital SI cancellation levels up to 35 dB, with substantially reduced processing complexity compared with the reference polynomial model. These methods and results pave the way toward enhanced duplexing capabilities and flexibility in the emerging 6G era.","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"34 11","pages":"1293-1296"},"PeriodicalIF":0.0,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10670562","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595123","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
A 63–89-kHz 1/f³ Phase Noise Corner QVCO Using Enhanced Wideband-Harmonic-Shaping Technique 使用增强型宽带谐波整形技术的 63-89 kHz 1/f³ 相位噪声角 QVCO
IEEE microwave and wireless technology letters Pub Date : 2024-09-09 DOI: 10.1109/LMWT.2024.3436868
Zhan Qu;Ya Zhao;Ge Gao;Chao Fan;Feng Liang;Li Geng
{"title":"A 63–89-kHz 1/f³ Phase Noise Corner QVCO Using Enhanced Wideband-Harmonic-Shaping Technique","authors":"Zhan Qu;Ya Zhao;Ge Gao;Chao Fan;Feng Liang;Li Geng","doi":"10.1109/LMWT.2024.3436868","DOIUrl":"https://doi.org/10.1109/LMWT.2024.3436868","url":null,"abstract":"A quadrature voltage-controlled oscillator (QVCO) utilizing the enhanced wideband-harmonic-shaping technique to improve phase noise (PN) and reduce the 1/\u0000<inline-formula> <tex-math>${f} ^{3}$ </tex-math></inline-formula>\u0000 PN corner is presented. Specifically, our QVCO uses triple-coil magnetic coupling for quadrature phase generation, additionally boosts the common-mode (CM) impedance and harmonic voltage, and contributes to a well-defined CM current returning path for PN improvement and flicker noise upconversion reduction. Besides, the head resonator (HR) enables wideband-harmonic-shaping operation and facilitates without manual second harmonic alignment. The QVCO is implemented in 55-nm CMOS and occupies a core area of 0.362 mm2. The measured peak PN is −124.2 dBc/Hz at 1-MHz offset, and the estimated 1/\u0000<inline-formula> <tex-math>${f} ^{3}$ </tex-math></inline-formula>\u0000 PN corner varies from 63 to 89 kHz across the entire operating range of 17% (4.14–4.97 GHz).","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"34 11","pages":"1263-1266"},"PeriodicalIF":0.0,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595064","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 电气和电子工程师学会《微波与无线技术通讯》作者须知
IEEE microwave and wireless technology letters Pub Date : 2024-09-05 DOI: 10.1109/LMWT.2024.3444435
{"title":"IEEE Microwave and Wireless Technology Letters Information for Authors","authors":"","doi":"10.1109/LMWT.2024.3444435","DOIUrl":"https://doi.org/10.1109/LMWT.2024.3444435","url":null,"abstract":"","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"34 9","pages":"C3-C3"},"PeriodicalIF":0.0,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10666898","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142143694","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
IEEE Open Access Publishing IEEE 开放存取出版
IEEE microwave and wireless technology letters Pub Date : 2024-09-05 DOI: 10.1109/LMWT.2024.3444441
{"title":"IEEE Open Access Publishing","authors":"","doi":"10.1109/LMWT.2024.3444441","DOIUrl":"https://doi.org/10.1109/LMWT.2024.3444441","url":null,"abstract":"","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"34 9","pages":"1133-1133"},"PeriodicalIF":0.0,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10666883","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142143760","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
Communication-Assisted Chirp Sequence Radar With Improved Data Rate 提高数据传输速率的通信辅助啁啾序列雷达
IEEE microwave and wireless technology letters Pub Date : 2024-09-05 DOI: 10.1109/LMWT.2024.3451413
Mohamad Basim Alabd;Lucas Giroto de Oliveira;Benjamin Nuss;Yueheng Li;Xueyun Long;Axel Diewald;Johannes Galinsky;Zsolt Kollár;Thomas Zwick
{"title":"Communication-Assisted Chirp Sequence Radar With Improved Data Rate","authors":"Mohamad Basim Alabd;Lucas Giroto de Oliveira;Benjamin Nuss;Yueheng Li;Xueyun Long;Axel Diewald;Johannes Galinsky;Zsolt Kollár;Thomas Zwick","doi":"10.1109/LMWT.2024.3451413","DOIUrl":"https://doi.org/10.1109/LMWT.2024.3451413","url":null,"abstract":"This letter presents a novel communication-assisted chirp sequence radar (CaCSR) system with an improved communication data rate, where part of each chirp is modulated with communication symbols. The transmit signal is partially modulated by one of the digital constellation schemes, such as phase-shift keying. Extending a previous study, which investigated the general idea of the partial modulation at 4 GHz under AWGN scenarios, this letter analyzes the channel effect on the CaCSR communication performance and presents results from measurement at 79 GHz. For this purpose, the number of assigned communication symbols is compared with the channel length, the duration of the communication section, and the pause between the chirps, where the communication receiver comprises a direct architecture with a small fraction of the whole radar bandwidth. Finally, the performance of the proposed system is verified via simulation and measurement results, showing that it achieves superior communication performance compared with a reference method where only one modulation symbol is transmitted per chirp at the cost of negligible radar performance degradation.","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"34 10","pages":"1214-1217"},"PeriodicalIF":0.0,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142397432","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 电气和电子工程师学会《微波与无线技术通讯》出版物
IEEE microwave and wireless technology letters Pub Date : 2024-09-05 DOI: 10.1109/LMWT.2024.3444433
{"title":"IEEE Microwave and Wireless Technology Letters publication","authors":"","doi":"10.1109/LMWT.2024.3444433","DOIUrl":"https://doi.org/10.1109/LMWT.2024.3444433","url":null,"abstract":"","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"34 9","pages":"C2-C2"},"PeriodicalIF":0.0,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10666810","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142143723","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
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