IEEE microwave and wireless technology letters最新文献_第5页

A 22--39-GHz Wideband High-Gain Active Phase Shifter Using Improved QAF and Current-Reused Technique in 28-nm Bulk CMOS 基于改进QAF和电流复用技术的22—39 ghz宽带高增益有源移相器

IF 3.4

IEEE microwave and wireless technology letters Pub Date : 2026-10-01 Epub Date: 2026-03-04 DOI: 10.1109/LMWT.2026.3687949

Cheng Cheng An;Li Gao;Xiu Yin Zhang

{"title":"A 22--39-GHz Wideband High-Gain Active Phase Shifter Using Improved QAF and Current-Reused Technique in 28-nm Bulk CMOS","authors":"Cheng Cheng An;Li Gao;Xiu Yin Zhang","doi":"10.1109/LMWT.2026.3687949","DOIUrl":"https://doi.org/10.1109/LMWT.2026.3687949","url":null,"abstract":"This letter presents a vector-sum phase shifter (VSPS) with low power and high gain based on a 28-nm bulk CMOS process. Informed by an analysis of the load characteristics of the quadrature all-pass filter (QAF), this circuit introduces and implements an innovative asymmetric-resonance structure. The improved QAF significantly reduces the quadrature amplitude error from 2 to 0.3 dB. Moreover, the circuit employs a current-reuse technique by cascading a 6-bit vector synthesis circuit with the common-source stage circuit at the DC level, effectively reducing DC power consumption while maintaining high gain. The proposed phase shifter (PS) realized a 1-dB bandwidth of 22–39 GHz (55.7% fractional bandwidth) and 360° phase shift with a phase resolution of 5.625°. The measured average gain is −1.5 dB, and the calculated corresponding root mean square (rms) gain and phase error are 0.37–0.64 dB and 0.32°–2.7°, respectively. The total DC power consumption is only 15 mW. This PS is particularly suitable for massive element phased-array beamforming, demonstrating over a 50% improvement in the figure of merit (FOM) compared to prior broadband designs.","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"36 10","pages":"1667-1670"},"PeriodicalIF":3.4,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149133820","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 Miniaturization Low-Loss Self-Packaged Hybrid SISL-SSPP Filter Using MGA-Aided Design 一种采用mga辅助设计的小型化低损耗自封装sis - sspp混合滤波器

IF 3.4

IEEE microwave and wireless technology letters Pub Date : 2026-10-01 Epub Date: 2026-04-28 DOI: 10.1109/LMWT.2026.3683448

Mingcan Cui;Quanyuan Feng;Qiang Sun;Yankai Ma

引用次数: 0

Design of Compact Quad-Function Filtering Circuit Using Hybrid Coaxial-Dielectric Resonators 基于混合同轴-介电谐振器的紧凑四函数滤波电路设计

IF 3.4

IEEE microwave and wireless technology letters Pub Date : 2026-10-01 Epub Date: 2026-03-04 DOI: 10.1109/LMWT.2026.3683405

Hui-Yang Li;Kai Yu;Xiaochong Liu;Li Yang;Xiu Yin Zhang

{"title":"Design of Compact Quad-Function Filtering Circuit Using Hybrid Coaxial-Dielectric Resonators","authors":"Hui-Yang Li;Kai Yu;Xiaochong Liu;Li Yang;Xiu Yin Zhang","doi":"10.1109/LMWT.2026.3683405","DOIUrl":"https://doi.org/10.1109/LMWT.2026.3683405","url":null,"abstract":"In this letter, we propose a method to design a quad-function filtering circuit using hybrid coaxial-dielectric resonators (DRs). The circuit features the combination of four circuit functions, which can be used to replace a filter, a single-pole double-throw (SPDT) switch, a power divider, and two balun circuits cascading in the radio frequency (RF) front-end system. A circuit model based on coupled resonators is introduced to combine the functions of an SPDT switch and a bandpass filter (BPF), where the switching of the passband is realized by controlling the admittances within the filter structure. Then, by using coaxial resonators, multiple feeding ports are simply arranged to the resonator to implement the circuit function of the power divider. Moreover, balanced-to-unbalanced signal conversion is enabled by utilizing the electromagnetic-field properties of the TM<sub>01</sub>-mode DR without increasing the circuit complexity. Compared to conventional designs using cascaded circuits, the proposed circuit shows greatly reduced size and loss. For verification, a prototype circuit is fabricated and measured. Experimental results show good bandpass responses with a wide stopband (for filter), high common-mode (CM) suppression (for balun), accurate power division (for power divider), as well as low loss and high isolation (for SPDT switch).","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"36 10","pages":"1571-1574"},"PeriodicalIF":3.4,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149133939","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

Exploring Continuous Modes-Based Nonlinear Embedding Models for GaN HEMT Power Amplifiers 基于连续模式的GaN HEMT功率放大器非线性嵌入模型研究

IF 3.4

IEEE microwave and wireless technology letters Pub Date : 2026-09-01 Epub Date: 2026-03-31 DOI: 10.1109/LMWT.2026.3672630

Ahmad Zakaria Ahmad;Mohammad Abdul Shukoor;Patrick Roblin;Karun Rawat

{"title":"Exploring Continuous Modes-Based Nonlinear Embedding Models for GaN HEMT Power Amplifiers","authors":"Ahmad Zakaria Ahmad;Mohammad Abdul Shukoor;Patrick Roblin;Karun Rawat","doi":"10.1109/LMWT.2026.3672630","DOIUrl":"https://doi.org/10.1109/LMWT.2026.3672630","url":null,"abstract":"This work presents a nonlinear embedding model approach for designing continuous class E (CCE) power amplifiers (PAs) based on gallium nitride (GaN)-HEMT packaged devices with harmonics above 6 GHz. This approach extends the embedding model for broadband PAs by enabling direct access to the current generator plane (CP), as well as the accurate projection of loads at the package plane (PP). By exploiting the embedding model’s ability to enforce Foster behavior at PP, this method circumvents non-Foster load challenges and simplifies the design of wideband passive matching networks. CCE design parameter (<inline-formula> <tex-math>$phi $ </tex-math></inline-formula>) possibility is investigated over the operating frequency range to achieve the wideband Foster behavior. For validation, two CCE PA designs with CGHV1F025S (plastic DFN) and CGH40025F (ceramic) devices are implemented using the advancements in the extracted embedding model. These PAs deliver 43–44.5 dBm of output power and 51.3%–69.1% drain efficiency (DE) in the S-band. This work provides comprehensive, systematic guidelines for parameter extraction, and the results establish embedding model-assisted CCE design as a scalable solution for high-efficiency broadband RF transmitters.","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"36 9","pages":"1494-1497"},"PeriodicalIF":3.4,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148902722","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

Synthesis Design of Quasi-Elliptic Tri-Band Filter-Response Amplifier Using Extracted-Pole Matching Filter Technique 基于提取极点匹配滤波技术的准椭圆型三带滤波响应放大器综合设计

IF 3.4

IEEE microwave and wireless technology letters Pub Date : 2026-09-01 Epub Date: 2026-04-21 DOI: 10.1109/LMWT.2026.3683455

Di Lu;Menghan Sun;Baoqi Zhu;Liyuan Xue;Yang Gao

引用次数: 0

A Grounded Coplanar Waveguide to Empty Substrate Integrated Waveguide Transition With Near-Octave Bandwidth 近倍频宽的共面波导到空基板集成波导转换

IF 3.4

IEEE microwave and wireless technology letters Pub Date : 2026-09-01 Epub Date: 2026-04-21 DOI: 10.1109/LMWT.2026.3683868

David Herraiz-Zanón;Héctor Esteban;Darío Herraiz;Angel Belenguer;Vicente E. Boria

引用次数: 0

Filled-Waveguide-Based Extraction and Package-Level Validation of Underfill Loss Tangent for mm-Wave Flip-Chip Applications 基于填充波导的毫米波倒装芯片下填充损耗正切提取与封装级验证

IF 3.4

IEEE microwave and wireless technology letters Pub Date : 2026-09-01 Epub Date: 2026-03-30 DOI: 10.1109/LMWT.2026.3675963

Ahmet Murat Yagci;Berkay Ciftci;Mahmut Sami Yazici;Ali Ilker Isik;Selim Acar

{"title":"Filled-Waveguide-Based Extraction and Package-Level Validation of Underfill Loss Tangent for mm-Wave Flip-Chip Applications","authors":"Ahmet Murat Yagci;Berkay Ciftci;Mahmut Sami Yazici;Ali Ilker Isik;Selim Acar","doi":"10.1109/LMWT.2026.3675963","DOIUrl":"https://doi.org/10.1109/LMWT.2026.3675963","url":null,"abstract":"Accurate characterization of underfill dielectric properties is critical for millimeter-wave (mm-wave) flip-chip packaging, as dielectric loss can significantly degrade high-frequency performance. In this letter, the frequency-dependent electrical permittivity and loss tangent of an epoxy-based underfill are extracted via transmission/reflection method using a WR-28 filled waveguide. Then, the extracted material properties are directly incorporated into a full-wave FEM model of a flip-chip packaged transmission structure without any fitting or tuning parameters and confirmed with measurements. To validate the approach at the package level, custom-designed flip-chip packaged substrate and dedicated thru–reflect–line (TRL) calibration kits are fabricated, enabling accurate <italic>S</i>-parameter measurements from 10 to 40 GHz. Excellent agreement between simulated and measured results, both with and without underfill, confirms the accuracy of the proposed characterization method and highlights the dominant impact of underfill dielectric loss on mm-wave package performance.","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"36 9","pages":"1530-1533"},"PeriodicalIF":3.4,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148902727","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 Novel TIA Front-End With Inductor-Less Peaking Capability and Dual-Mode Noise Suppression for 25 Gb/s and Beyond 一种新型的TIA前端，具有无电感峰值能力和双模噪声抑制，可用于25gb /s及以上

IF 3.4

IEEE microwave and wireless technology letters Pub Date : 2026-09-01 Epub Date: 2026-04-13 DOI: 10.1109/LMWT.2026.3678872

Wenyu Zhou;Larry Tarof;Rony E. Amaya

{"title":"A Novel TIA Front-End With Inductor-Less Peaking Capability and Dual-Mode Noise Suppression for 25 Gb/s and Beyond","authors":"Wenyu Zhou;Larry Tarof;Rony E. Amaya","doi":"10.1109/LMWT.2026.3678872","DOIUrl":"https://doi.org/10.1109/LMWT.2026.3678872","url":null,"abstract":"A monolithically integrated InP optical receiver for applications in 25 Gb/s intensity modulation direct detection (IMDD) is presented. A feedforward voltage-to-current converter-based automatic gain control (AGC) is numerically analyzed for a peaking capability without any on-chip inductor. The novel analysis yields a unique dual-mode noise suppression strategy: the proposed transimpedance amplifier (TIA) front-end exhibits third-order roll-off for superior out-of-band noise suppression, while the purposely enlarged feedback resistor provides an optimal in-band noise suppression. Moreover, the proposed AGC can be adapted for higher speeds by simple parameter scaling. Benefiting from the classic current multiplier, a factor of 2 is simulated to achieve an extra current gain of 6 dB with minimal speed reduction and power consumption. Furthermore, an unconventional dummy TIA topology is derived from the current multiplier. Both the tracking and fixed biasing dummy TIAs, combined with the proposed TIA front-end, are implemented in a monolithically integrated 25 Gb/s optical receiver employing only NPN HBTs. The measured sensitivity for the complete receiver at a bit error rate (BER) <inline-formula> <tex-math>$rm 10^{-2}$ </tex-math></inline-formula> is −24 dBm (<inline-formula> <tex-math>$4.63~mu $ </tex-math></inline-formula>A<inline-formula> <tex-math>${}_{pp}$ </tex-math></inline-formula>), with an overload of −6 dBm (<inline-formula> <tex-math>$291.94~mu $ </tex-math></inline-formula>A<inline-formula> <tex-math>${}_{pp}$ </tex-math></inline-formula>).","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"36 9","pages":"1514-1517"},"PeriodicalIF":3.4,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11480737","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148903182","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 Compact Reconfigurable Integrated Coupler/ Power Divider With Shared Through Port 一个紧凑的可重构集成耦合器/功率分配器与共享通过端口

IF 3.4

IEEE microwave and wireless technology letters Pub Date : 2026-09-01 Epub Date: 2026-04-02 DOI: 10.1109/LMWT.2026.3672055

Tao Fang;Tao Tang;Omar M. Ramahi

{"title":"A Compact Reconfigurable Integrated Coupler/ Power Divider With Shared Through Port","authors":"Tao Fang;Tao Tang;Omar M. Ramahi","doi":"10.1109/LMWT.2026.3672055","DOIUrl":"https://doi.org/10.1109/LMWT.2026.3672055","url":null,"abstract":"A novel shared through-port architecture for a compact, broadband, and reconfigurable integrated coupler/ power divider is proposed in this letter. By structurally fusing two three-branch couplers, the design intrinsically integrates multiple functions. Reconfiguration among three operating modes—left- or right-channel coupling and equal power division—is achieved using p-i-n diodes. A hybrid miniaturization approach employing T-shaped equivalent stubs and meandered lines ensures the wideband performance. Fabricated at 2.45 GHz with a compact size of <inline-formula> <tex-math>$28.46times 38.42$ </tex-math></inline-formula> mm, the circuit exhibits measured the coupling mode operation from 2.30 to 2.65 GHz (<inline-formula> <tex-math>$-3.5pm 0.2$ </tex-math></inline-formula> dB output and >23 dB isolation) and power-division mode operation from 2.0 to 2.97 GHz (<inline-formula> <tex-math>$-5{,}pm{,}0.2$ </tex-math></inline-formula> dB output, >18.1 dB isolation, and phase imbalance ±0.6°). Compared with conventional cascaded solutions, this work provides a significantly more integrated and flexible building block for reconfigurable RF front-ends.","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"36 9","pages":"1406-1409"},"PeriodicalIF":3.4,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148903218","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 Convolutional Autoencoder and Adjoint Sensitivity-Enhanced Neuro-TF Framework for Parametric Modeling of Microwave Filters 用于微波滤波器参数化建模的卷积自编码器和伴随灵敏度增强神经- tf框架

IF 3.4

IEEE microwave and wireless technology letters Pub Date : 2026-09-01 Epub Date: 2026-04-02 DOI: 10.1109/LMWT.2026.3678899

Weicong Na;Yuqian Wang;Lin Zhu;Wanrong Zhang;Qi-Jun Zhang

{"title":"A Convolutional Autoencoder and Adjoint Sensitivity-Enhanced Neuro-TF Framework for Parametric Modeling of Microwave Filters","authors":"Weicong Na;Yuqian Wang;Lin Zhu;Wanrong Zhang;Qi-Jun Zhang","doi":"10.1109/LMWT.2026.3678899","DOIUrl":"https://doi.org/10.1109/LMWT.2026.3678899","url":null,"abstract":"Neuro-transfer function (Neuro-TF) has emerged as a prominent approach for electromagnetic (EM) parametric modeling, though traditional implementations for TF parameter extraction relying on vector fitting often suffer from parameter discontinuity. In this letter, we propose a novel framework integrating 1-D convolutional autoencoder (1D-CAE) with adjoint sensitivity analysis to establish high-fidelity parametric models for microwave filters. The proposed 1D-CAE-based TF parameter extraction captures intricate frequency-dependent relationships within S-parameters through its hierarchical convolutional layers, achieving efficient dimensionality reduction while preserving essential EM characteristics. To accelerate the training process, an adjoint sensitivity-enhanced multilayer perceptron (MLP) and EM sensitivity are used to map geometric parameters to the extracted TF parameters. The final hybrid architecture combines the sensitivity-informed MLP with the 1D-CAE decoder to form an end-to-end surrogate that directly translates geometric parameters into EM responses. Compared to conventional neuro-TF approaches, the proposed method achieves better model accuracy with fewer TF parameters. Two microwave filter modeling examples are provided for demonstration.","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"36 9","pages":"1402-1405"},"PeriodicalIF":3.4,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148903222","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