IEEE Transactions on Microwave Theory and Techniques最新文献_第7页

Fluidic-Controlled Slot-Loaded Microwave Reflective Surface for Multistate Phase Control 多态相位控制的流控缝载微波反射面

IF 5.2 1区工程技术

IEEE Transactions on Microwave Theory and Techniques Pub Date : 2026-09-01 Epub Date: 2026-08-05 DOI: 10.1109/TMTT.2026.3717506

Rasoul Fakhteh;Yi-Wen Wu;Miguel Navarro-Cía;Ignacio Llamas-Garro;Yi Wang

{"title":"Fluidic-Controlled Slot-Loaded Microwave Reflective Surface for Multistate Phase Control","authors":"Rasoul Fakhteh;Yi-Wen Wu;Miguel Navarro-Cía;Ignacio Llamas-Garro;Yi Wang","doi":"10.1109/TMTT.2026.3717506","DOIUrl":"https://doi.org/10.1109/TMTT.2026.3717506","url":null,"abstract":"This work presents a fluidic-controlled microwave reflective surface enabling multistate phase control through slot-coupled fluidic loading. The proposed structure employs a slotted ground plane integrated with a polydimethylsiloxane (PDMS)-based microfluidic channel that can be selectively filled with air, liquid metal (LM), or water to realize discrete reflection phase states without the use of semiconductor switches or bias networks. By positioning the fluidic channels beneath the ground plane, the electromagnetic characteristics of the reflective surface are preserved while enabling controllable impedance loading of the slot region. The symmetric element geometry and slot-loading configuration provide polarization-independent operation. A fully analytical equivalent-circuit model (ECM) is developed to describe the interaction between the crossed patch, grounded substrate, and slot-loaded fluidic channel, providing physical insight into the underlying microwave phase-control mechanism and enabling closed-form prediction of the reflection response under different fluidic states. The structure supports three discrete phase states, enabling three-level phase-gradient control for anomalous reflection. A <inline-formula> <tex-math>$16times 16$ </tex-math></inline-formula> prototype operating at 15 GHz is fabricated using a PDMS–printed circuit board (PCB) bonding process and experimentally characterized. Measured results demonstrate beam steering and anomalous reflection up to 76°, showing good agreement with the simulated results and confirming the feasibility of fluidic loading as a bias-free technique for implementing reconfigurable microwave reflective structures.","PeriodicalId":13272,"journal":{"name":"IEEE Transactions on Microwave Theory and Techniques","volume":"74 9","pages":"7779-7789"},"PeriodicalIF":5.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148928325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bit-Level Modeling and Reception Analysis of Concurrent Transmissions in Galvanic Coupled Communication 偶联通信中并发传输的位级建模与接收分析

IF 5.2 1区工程技术

IEEE Transactions on Microwave Theory and Techniques Pub Date : 2026-09-01 Epub Date: 2026-07-27 DOI: 10.1109/TMTT.2026.3713913

Shuang Yang;Han Wang;Lina Chen;Mang I. Vai;Sio Hang Pun;Jiejie Yang;Zhizhang David Chen;Yueming Gao

{"title":"Bit-Level Modeling and Reception Analysis of Concurrent Transmissions in Galvanic Coupled Communication","authors":"Shuang Yang;Han Wang;Lina Chen;Mang I. Vai;Sio Hang Pun;Jiejie Yang;Zhizhang David Chen;Yueming Gao","doi":"10.1109/TMTT.2026.3713913","DOIUrl":"https://doi.org/10.1109/TMTT.2026.3713913","url":null,"abstract":"Wireless body area networks (WBANs) based on galvanic coupled communication are a promising physical-layer paradigm for the next-generation smart healthcare systems. However, high-frequency, fine-grained data exchange among multiple nodes is prone to concurrent collisions, which can severely degrade system stability and sensing accuracy. To elucidate the physical-layer collision mechanism and quantify receiver performance limits, this work adopts a multilayer human channel model as an enabling foundation to establish a bit-level concurrent transmission analysis system for galvanic coupled communication. This framework integrates the human body channel, asynchronous interferers, and differential correlation detection to formulate a quantitative mapping from the multidimensional concurrence parameter space to the conditional bit error rate (BER). Within this framework, capture boundaries are explicitly derived along the topology, carrier-frequency offset, and time/phase offset dimensions. The results show that successful reception is governed by structured capture regions rather than by a single signal-to-interference-ratio threshold. Furthermore, direct-sequence spread spectrum (DSSS) is shown to not only enhance interference resilience but also significantly shrink the effective interference radius, thereby enabling higher achievable capacity through spatial reuse. Validated by on-body channel measurements and benchtop software-defined radio (SDR) experiments, the predicted capture boundaries are confirmed on real galvanic coupled communication links. Overall, this work provides quantitative performance bounds and practical guidelines for protocol design and cross-layer optimization in body area networks based on galvanic coupled communication.","PeriodicalId":13272,"journal":{"name":"IEEE Transactions on Microwave Theory and Techniques","volume":"74 9","pages":"8476-8490"},"PeriodicalIF":5.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148985694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A High-Selectivity Fourth-Order Reflective Polarization Conversion Metasurface Based on Guided-Wave Structure 基于导波结构的高选择性四阶反射偏振转换超表面

IF 5.2 1区工程技术

IEEE Transactions on Microwave Theory and Techniques Pub Date : 2026-09-01 Epub Date: 2026-07-16 DOI: 10.1109/TMTT.2026.3710897

Yanjie Wu;Xiaozhou Shi;Jing Tian;Shiwen Lei;Bo Chen;Haoquan Hu

{"title":"A High-Selectivity Fourth-Order Reflective Polarization Conversion Metasurface Based on Guided-Wave Structure","authors":"Yanjie Wu;Xiaozhou Shi;Jing Tian;Shiwen Lei;Bo Chen;Haoquan Hu","doi":"10.1109/TMTT.2026.3710897","DOIUrl":"https://doi.org/10.1109/TMTT.2026.3710897","url":null,"abstract":"Improving the frequency selectivity (FS) of polarization conversion metasurface (PCM) is essential for improving the anti-interference capability, electromagnetic (EM) compatibility, and overall reliability of the wireless system. This article proposes an efficient methodology for designing a high-selectivity broadband reflective PCM based on a guided-wave structure. First, the performance of the guided-wave structure is analyzed in detail, while an equivalent circuit model (ECM) of high-selectivity fourth-order PCM is proposed, and the operating principle is analyzed through the derivation of the ECM. Then, the unit cell of the proposed PCM is designed based on the ECM, in which the top and middle layers of the device act as a frequency-selective surface (FSS) to achieve fourth-order resonance for polarization conversion (PC) bandwidth extension, while two out-of-band PC zeros are also designed for FS improvement. The bottom layer, with an L-shaped microstrip line connected to the middle layer through via-holes, is used to achieve PC. Full-wave simulation results indicate that the proposed PCM exhibits a wide PC bandwidth of 16.1%, with a maximum PC rate of 99.8% at 6.57 GHz. The frequency selectivities of lower and higher transition bands are 245 and 305 dB/GHz, respectively, demonstrating excellent roll-off performance of the proposed PCM. Finally, a prototype is manufactured and measured to verify the simulation results.","PeriodicalId":13272,"journal":{"name":"IEEE Transactions on Microwave Theory and Techniques","volume":"74 9","pages":"7767-7778"},"PeriodicalIF":5.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148924066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A 220-GHz High-Resolution Near-Range FMCW Imaging Radar System 一种220 ghz高分辨率近距离FMCW成像雷达系统

IF 5.2 1区工程技术

IEEE Transactions on Microwave Theory and Techniques Pub Date : 2026-09-01 Epub Date: 2026-07-31 DOI: 10.1109/TMTT.2026.3717093

Huimin Liu;Zhang-Cheng Hao;Feng Xie;Chen-Yu Ding;Zhuo-Wei Miao;Wei Hong

{"title":"A 220-GHz High-Resolution Near-Range FMCW Imaging Radar System","authors":"Huimin Liu;Zhang-Cheng Hao;Feng Xie;Chen-Yu Ding;Zhuo-Wei Miao;Wei Hong","doi":"10.1109/TMTT.2026.3717093","DOIUrl":"https://doi.org/10.1109/TMTT.2026.3717093","url":null,"abstract":"This article presents a compact, fully integrated 220-GHz frequency-modulated continuous-wave (FMCW) synthetic aperture radar (SAR) system for high-resolution, large field-of-view 3-D near-range imaging. Employing a monostatic single-input–single-output architecture, the system exploits the short wavelength and ultrawide bandwidth (UWB) of terahertz (THz) waves to achieve millimeter-scale resolution in a <inline-formula> <tex-math>$12times 6times 3$ </tex-math></inline-formula> cm3 form factor. The hardware integrates silicon-based transmitter and receiver modules with signal control, frequency synthesis, data acquisition, and power management circuits on a unified platform. A phase-locked loop (PLL) and broadband voltage-controlled oscillator (VCO) generate linear FMCW chirps with 9–14 GHz bandwidth, enabling a range resolution of 3 cm. To accelerate data acquisition while ensuring wide spatial coverage, an Archimedean spiral scanning trajectory is adopted based on a bistatic spherical wave propagation model. Nonuniform spatial sampling effects are compensated using the Voronoi tessellation, and Stolt interpolation is applied in k-space to enable efficient 3-D image reconstruction. The prototype achieves a lateral resolution of 2.7 mm. Experimental results on concealed objects and complex backgrounds demonstrate the system’s superior performance in terms of compactness, cost-effectiveness, imaging speed, and resolution. This radar is suitable for noninvasive inspection, nondestructive testing, and rapid near-field 3-D imaging applications.","PeriodicalId":13272,"journal":{"name":"IEEE Transactions on Microwave Theory and Techniques","volume":"74 9","pages":"8432-8444"},"PeriodicalIF":5.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148925489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Highly Integrated W-Band 16-Element Phased-Array Transceiver in 40-nm CMOS 40纳米CMOS高集成w波段16元相控阵收发器

IF 5.2 1区工程技术

IEEE Transactions on Microwave Theory and Techniques Pub Date : 2026-09-01 Epub Date: 2026-08-21 DOI: 10.1109/TMTT.2026.3719676

Jiazhi Ying;Zhiwei Zhou;Zhiqiang Zhao;Zunxiang Wang;Naihe Tang;Yu Zhao;Shuo Yang;Enxian Li;Yikun Wang;Qianteng Wu;Kaiqiang Zhu;Bei Liu;Houjun Sun

{"title":"A Highly Integrated W-Band 16-Element Phased-Array Transceiver in 40-nm CMOS","authors":"Jiazhi Ying;Zhiwei Zhou;Zhiqiang Zhao;Zunxiang Wang;Naihe Tang;Yu Zhao;Shuo Yang;Enxian Li;Yikun Wang;Qianteng Wu;Kaiqiang Zhu;Bei Liu;Houjun Sun","doi":"10.1109/TMTT.2026.3719676","DOIUrl":"https://doi.org/10.1109/TMTT.2026.3719676","url":null,"abstract":"This article presents a highly integrated <inline-formula> <tex-math>$W$ </tex-math></inline-formula>-band 16-element phased-array transceiver (TRX) incorporating the on-chip up-/down-conversion paths and multiplier chain in a 40-nm CMOS process. The chip adopts an RF beamforming architecture and features a compact footprint fully compatible with a <inline-formula> <tex-math>$lambda $ </tex-math></inline-formula>/2 lattice for 2-D array tiling. At the circuit level, a coupled-line (CL)-based transmit/receive (T/R) switch is proposed, achieving under 1-dB insertion loss (IL) and improved TX/RX isolation while minimizing footprint. A low-loss 7-bit phase shifter (PS) topology is adopted, with a hybrid PS and attenuator (PSATT) integrated into the interstage matching networks, both of which alleviate the linearity constraints on cascaded active stages. Moreover, a calibration module is accommodated to suppress system-level local oscillator feedthrough (LOFT) and enhance the image rejection ratio (IRR). Measurement results demonstrate that TX mode exhibits a peak conversion gain (CG) of 33 dB with 4.4-GHz 3-dB bandwidth and delivers a saturated output power (Psat) of 12.6 dBm. The RX mode exhibits a CG of 22 dB, a noise figure (NF) of 9.7 dB, and an input 1-dB compression point (IP1dB) of −28 dBm. The TRX realizes beam control with a 2.8° phase resolution and 0.5-dB amplitude step, enabling effective array sidelobe suppression. To the best of the authors’ knowledge, this is the first reported <inline-formula> <tex-math>$W$ </tex-math></inline-formula>-band TRX supporting high-precision amplitude tuning. The built-in calibration achieves LOFT suppression and IRR of over 36 and 40 dBc. This work provides a compact and robust single-chip solution for next-generation <inline-formula> <tex-math>$W$ </tex-math></inline-formula>-band phased-array systems.","PeriodicalId":13272,"journal":{"name":"IEEE Transactions on Microwave Theory and Techniques","volume":"74 9","pages":"8196-8209"},"PeriodicalIF":5.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148925693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Maximum Correntropy Contrast-Source Inversion for Robust Electromagnetic Inverse Imaging 鲁棒电磁反演成像的最大相关熵对比源反演

IF 5.2 1区工程技术

IEEE Transactions on Microwave Theory and Techniques Pub Date : 2026-09-01 Epub Date: 2026-07-30 DOI: 10.1109/TMTT.2026.3716696

Tingsen Zhang;Xifeng Li;Dongjie Bi;Yongle Xie

{"title":"Maximum Correntropy Contrast-Source Inversion for Robust Electromagnetic Inverse Imaging","authors":"Tingsen Zhang;Xifeng Li;Dongjie Bi;Yongle Xie","doi":"10.1109/TMTT.2026.3716696","DOIUrl":"https://doi.org/10.1109/TMTT.2026.3716696","url":null,"abstract":"Electromagnetic inverse scattering problems (EISPs) are notoriously challenging due to their inherent nonlinearity and illposedness, which render the reconstruction of targets from scattered-field measurements highly susceptible to noise. Classical contrast-source inversion (CSI) methods rely on the mean squared error (MSE) criterion and therefore exhibit limited robustness against the non-Gaussian noise commonly encountered in real-world applications. To overcome this limitation, we propose an information-theoretic approach that replaces the MSE with the maximum correntropy criterion (MCC), yielding the maximum correntropy criterion contrast-source inversion (MCC-CSI) algorithm. The resulting nonconvex optimization problem is solved within a half-quadratic (HQ) framework, which recasts it into a sequence of iteratively reweighted least-squares subproblems and thereby enables the adaptive suppression of outliers through a Gaussian-kernel weighting mechanism. We further provide a rigorous theoretical analysis establishing the algorithm’s convergence and demonstrating that its asymptotic computational complexity is identical to that of conventional CSI. Comprehensive experiments on diverse synthetic and experimental targets under various noise conditions demonstrate that MCC-CSI significantly outperforms classical CSI-type methods, with particularly remarkable gains under impulsive noise. This work demonstrates that replacing the quadratic data fidelity with a kernel-induced metric, coupled with a HQ reformulation that preserves asymptotic computational efficiency and admits convergence guarantees, constitutes a principled and practically viable strategy for robustifying iterative inversion algorithms against non-Gaussian corruptions.","PeriodicalId":13272,"journal":{"name":"IEEE Transactions on Microwave Theory and Techniques","volume":"74 9","pages":"7965-7981"},"PeriodicalIF":5.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148926113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Digital Predistortion Based on Advanced Voltage-Aware Memory-Polynomial Modeling for Massive MIMO Systems 基于先进电压感知记忆多项式建模的大规模MIMO系统数字预失真

IF 5.2 1区工程技术

IEEE Transactions on Microwave Theory and Techniques Pub Date : 2026-09-01 Epub Date: 2026-07-27 DOI: 10.1109/TMTT.2026.3715377

Ahmed A. Ghoniem;Reda Mohellebi;Dang-Kién Germain Pham;Chadi Jabbour

{"title":"Digital Predistortion Based on Advanced Voltage-Aware Memory-Polynomial Modeling for Massive MIMO Systems","authors":"Ahmed A. Ghoniem;Reda Mohellebi;Dang-Kién Germain Pham;Chadi Jabbour","doi":"10.1109/TMTT.2026.3715377","DOIUrl":"https://doi.org/10.1109/TMTT.2026.3715377","url":null,"abstract":"This article presents a voltage-aware digital predistortion (DPD) framework based on memory-polynomial (MP) modeling for large-scale multiple-input–multiple-output (MIMO) transmitter systems. The proposed approach introduces a voltage-sensitivity function (VSF) that parameterizes MP coefficients as a function of supply voltage, enabling power-amplifier (PA) behavior to be reconstructed across the operating range using a compact set of voltage-dependent parameters. The framework is developed in two forms: a forward VSF for reconstructing PA MP coefficients and an inverse VSF for reconstructing DPD coefficients from the sensed supply voltage. Experimental measurements first show that supply-voltage variation produces device-specific changes in error vector magnitude (EVM) and adjacent-channel leakage ratio (ACLR), and a DPD trained at a single voltage does not consistently provide optimal performance across the full voltage range. The proposed VSF framework is validated using three commercial PAs, namely, the ZX60–V62+, RFLUPA05M06G, and ZHL-42, under wideband-modulated excitation representative of demanding transmitter linearity requirements. The forward VSF reconstructs the voltage-dependent PA response with EVM deviations below 0.3% and ACLR deviations below 0.4 dB across the tested devices. The inverse VSF DPD provides performance close to the self-trained DPD reference, with EVM deviations within 0.3%, ACLR deviations within 2.5 dB, and mean DPD-coefficient reconstruction errors below 3%. These results demonstrate that the VSF provides a compact and scalable representation for voltage-aware PA modeling and DPD adaptation, thereby reducing the need to reidentify a complete PA model or DPD at every supply-voltage point.","PeriodicalId":13272,"journal":{"name":"IEEE Transactions on Microwave Theory and Techniques","volume":"74 9","pages":"7840-7853"},"PeriodicalIF":5.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148928333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Wideband Single-Beam Four-Element QFN Transmit/Receive Beamformer IC in 65-nm CMOS 一种基于65nm CMOS的宽带单波束四元QFN发射/接收波束形成电路

IF 5.2 1区工程技术

IEEE Transactions on Microwave Theory and Techniques Pub Date : 2026-09-01 Epub Date: 2026-07-22 DOI: 10.1109/TMTT.2026.3712698

Kim Phan Van;Sanghun Lee;Cuong Huynh

{"title":"A Wideband Single-Beam Four-Element QFN Transmit/Receive Beamformer IC in 65-nm CMOS","authors":"Kim Phan Van;Sanghun Lee;Cuong Huynh","doi":"10.1109/TMTT.2026.3712698","DOIUrl":"https://doi.org/10.1109/TMTT.2026.3712698","url":null,"abstract":"This article presents a wideband single-beam four-element transmit (TX)/receive (RX) beamformer integrated circuit (BFIC) fabricated in 65-nm complementary metal oxide semiconductor (CMOS) and implemented in a quad flat no-lead (QFN) package, targeting phased-array front ends operating across 8–16 GHz. Each channel integrates a full 360° phase shifter (PS) with 2.8125° resolution and a 35-dB gain control range with 0.18-dB resolution, enabling beam steering and amplitude tapering over an octave bandwidth. Measured over 8–16 GHz, the proposed IC achieves 1.78° root mean square (rms) phase error and 0.23-dB rms gain error. In the TX path, the IC provides 23.5-dB gain and delivers 8.3-dBm output 1-dB compression point (OP1dB), 12.6-dBm saturated output power (PSAT), and 19.4-dBm output third-order intercept point (OIP3), while consuming 198.5 mW per channel. In the RX path, it achieves 9.7-dB gain with 5.9-dB noise figure (NF), together with −18.1-dBm input 1-dB compression point (IP1 dB) and −7.4-dBm input third-OIP3 (IIP3), while consuming 89 mW per channel. For 50-Ms/s quadrature phase-shift keying (QPSK), 8-PSK, 16-QAM, and 64-QAM signals at 8, 12, and 16 GHz with input power from −50 to −5 dBm, the BiCMOS ultrawideband flip-chip packaging RX beamformer IC (BFIC) exhibits minimum error vector magnitude (EVM) below 2.7% in both TX and RX paths. The chip occupies 17.6 mm2 (<inline-formula> <tex-math>$4.4times 4$ </tex-math></inline-formula> mm2). To the best of our knowledge, the key innovations of this work include the first demonstrations of a fully integrated wideband 8–16-GHz 4 T/4 R QFN BFIC in 65-nm CMOS, a comparative analysis of QFN bondwire configurations with and without downbonding for wideband multichannel operation, and a phase/gain tuning optimization algorithm that minimizes the rms phase and gain errors.","PeriodicalId":13272,"journal":{"name":"IEEE Transactions on Microwave Theory and Techniques","volume":"74 9","pages":"8461-8475"},"PeriodicalIF":5.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148925522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Scalar-Metric-Based Digital Predistortion Model Extraction Using Out-of-Band Power-Driven Stochastic Optimization 基于标量度量的带外功率驱动随机优化数字预失真模型提取

IF 5.2 1区工程技术

IEEE Transactions on Microwave Theory and Techniques Pub Date : 2026-09-01 Epub Date: 2026-08-18 DOI: 10.1109/TMTT.2026.3722284

Qian Wu;Anding Zhu

引用次数: 0

An 8--25 GHz High-Linearity I/Q Harmonic-Rejection Mixer Utilizing a Six-Way Unequal-Split Wilkinson Divider in 16-nm FinFET 基于六路不等分路威尔金森分频器的8- 25ghz高线性I/Q谐波抑制混频器

IF 5.2 1区工程技术

IEEE Transactions on Microwave Theory and Techniques Pub Date : 2026-09-01 Epub Date: 2026-08-14 DOI: 10.1109/TMTT.2026.3718934

Mohammed Helal;Ahmed Helaly;Gabriel M. Rebeiz

{"title":"An 8--25 GHz High-Linearity I/Q Harmonic-Rejection Mixer Utilizing a Six-Way Unequal-Split Wilkinson Divider in 16-nm FinFET","authors":"Mohammed Helal;Ahmed Helaly;Gabriel M. Rebeiz","doi":"10.1109/TMTT.2026.3718934","DOIUrl":"https://doi.org/10.1109/TMTT.2026.3718934","url":null,"abstract":"An 8–25 GHz in-phase/quadrature (I/Q) harmonic-rejection mixer (HRM) is presented. The mixer employs six passive mixer cores driven by a multiphase clock to realize both harmonic rejection and quadrature generation. A compact, unequal-split Wilkinson network is utilized in the RF path to provide the signal weighting required for harmonic rejection. Furthermore, this network provides RF isolation between the mixer cells, allowing the use of overlapping 50% duty-cycle clock signals, which enables operation at higher frequencies. A passive two-stage RC polyphase filter (PPF), followed by a phase interpolator, generates the eight-phase clock required for harmonic rejection without the need for clock dividers, resulting in a low-power, high-frequency design. The eight-phase clock is also used to drive the quadrature mixer, simultaneously generating both I/Q outputs. The I/Q HRM is fabricated in Intel 16-nm FinFET technology with a core area of <inline-formula> <tex-math>$0.47times 0.2$ </tex-math></inline-formula> mm2. The design exhibits a measured conversion loss of 10.5–13.5 dB at 8–25 GHz. The I/Q HRM supports an instantaneous intermediate frequency (IF) bandwidth of up to 12 GHz and demonstrates I/Q magnitude and phase imbalances of < 0.4 dB and < 6°, respectively, while consuming < 83 mW of DC power across the entire bandwidth. A harmonic rejection ratio (HRR) of > 30 dBc is achieved for both the 3rd- and 5th-harmonic foldings. Owing to its all-passive architecture, the mixer achieves an in-band IP<inline-formula> <tex-math>${}_{text {1 dB}}$ </tex-math></inline-formula> of 11–13 dBm at 8–25 GHz. This combination of wideband I/Q operation, low power consumption, and high linearity makes the proposed HRM suitable for high-linearity 5/6G systems and wideband transceivers.","PeriodicalId":13272,"journal":{"name":"IEEE Transactions on Microwave Theory and Techniques","volume":"74 9","pages":"8120-8129"},"PeriodicalIF":5.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148928279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0