IEEE Transactions on Microwave Theory and Techniques最新文献_第9页

Biodegradable and Easy-to-Make Broadband Tissue Phantoms Between 0.4 and 6 GHz Based on Phosphate Buffered Saline Solution

IF 4.1 1区工程技术

IEEE Transactions on Microwave Theory and Techniques Pub Date : 2024-10-08 DOI: 10.1109/TMTT.2024.3468444

Adrián Fernández Carnicero;Sujith Raman;Ana Fernández-Escribano;Mariano Redondo-Horcajo;Teresa Suárez;Anja K. Skrivervik

{"title":"Biodegradable and Easy-to-Make Broadband Tissue Phantoms Between 0.4 and 6 GHz Based on Phosphate Buffered Saline Solution","authors":"Adrián Fernández Carnicero;Sujith Raman;Ana Fernández-Escribano;Mariano Redondo-Horcajo;Teresa Suárez;Anja K. Skrivervik","doi":"10.1109/TMTT.2024.3468444","DOIUrl":"https://doi.org/10.1109/TMTT.2024.3468444","url":null,"abstract":"Phosphate buffered saline (PBS) solution is a balanced salt solution employed for cell manipulation in cell culture experiments. In this work, PBS is used as base component for making liquid tissue-equivalent materials, also known as phantoms. For this purpose, the dielectric properties of PBS and other balanced salt solution and cell culture media used in cell culture experiments are measured at different temperatures (<inline-formula> <tex-math>$9~^{circ }$ </tex-math></inline-formula>C, <inline-formula> <tex-math>$21~^{circ }$ </tex-math></inline-formula>C, and <inline-formula> <tex-math>$37~^{circ }$ </tex-math></inline-formula>C) with an open-ended coaxial probe. Moreover, the two-pole Cole-Cole model of all these measured media at the mentioned temperatures is computed. As a result of the similar dielectric losses of these media to biological tissues, the simplest one (PBS) was chosen to make tissue phantoms. The proposed phantoms are mixtures of PBS, distilled water, sodium chloride, and seed oil-based non-ionic surfactant and they are electrically characterized at <inline-formula> <tex-math>$21~^{circ }$ </tex-math></inline-formula>C using an open-ended coaxial probe. These phantoms are biodegradable, safe, low cost, ease-to-prepare, and time-stable over a broadband frequency range (400 MHz–6 GHz). Moreover, all measured data is available in an online open access repository.","PeriodicalId":13272,"journal":{"name":"IEEE Transactions on Microwave Theory and Techniques","volume":"73 4","pages":"2334-2344"},"PeriodicalIF":4.1,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143809003","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}

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Guest Editorial Mini-Special Issue on the 2023 International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits 2023 年集成非线性微波和毫米波电路国际研讨会特邀编辑小特刊

IF 4.1 1区工程技术

IEEE Transactions on Microwave Theory and Techniques Pub Date : 2024-10-08 DOI: 10.1109/TMTT.2024.3461167

José Carlos Pedro

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IF 4.1 1区工程技术

IEEE Transactions on Microwave Theory and Techniques Pub Date : 2024-10-08 DOI: 10.1109/TMTT.2024.3464429

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IEEE Transactions on Microwave Theory and Techniques Information for Authors IEEE 《微波理论与技术》杂志作者须知

IF 4.1 1区工程技术

IEEE Transactions on Microwave Theory and Techniques Pub Date : 2024-10-08 DOI: 10.1109/TMTT.2024.3464431

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A Synthesis Theory of Wideband Quasi-Elliptic Bandstop Filter With Back-to-Back Open-Ended Spanner Structure

IF 4.1 1区工程技术

IEEE Transactions on Microwave Theory and Techniques Pub Date : 2024-10-08 DOI: 10.1109/TMTT.2024.3468915

Taiyang Xie;Xiaolong Wang;Lei Zhu;Gennadi Milinevsky;Geyu Lu

{"title":"A Synthesis Theory of Wideband Quasi-Elliptic Bandstop Filter With Back-to-Back Open-Ended Spanner Structure","authors":"Taiyang Xie;Xiaolong Wang;Lei Zhu;Gennadi Milinevsky;Geyu Lu","doi":"10.1109/TMTT.2024.3468915","DOIUrl":"https://doi.org/10.1109/TMTT.2024.3468915","url":null,"abstract":"In this article, a quasi-elliptic wideband bandstop filter (BSF) is presented with the proposed synthesis theory. In order to analyze the novel mechanism of creating extra two reflection zeros (RZs) in back-to-back open-ended spanner structure, both without coupling structure (BSF I) and with coupling structure (BSF II) are analyzed and discussed in detail where BSF I consists of two open stubs, two cascaded transmission lines (TLs), and a stepped-impedance open stub, which is shunted in the center of the filter; by dividing the stepped-impedance open stub into two coupled line (CL) sections, BSF I becomes BSF II, which includes a back-to-back open-ended spanner structure. The proposed synthesis theory proves that BSFs I and II belong to the same theoretical quasi-elliptic response transfer function. Considering the urgent needs of design specifications for BSF, the proposed synthesis theory could directly design and control the stopband with equal-ripple performance, such as the fractional bandwidth of <inline-formula> <tex-math>$S_{21}$ </tex-math></inline-formula> (FBW<inline-formula> <tex-math>$^{S_{21}}$ </tex-math></inline-formula>) and stopband rejection of <inline-formula> <tex-math>$S_{21}$ </tex-math></inline-formula> (SR). After design theory, flowchart and design charts are summarized and discussed, and six design examples are also selected for theoretical verification. Furthermore, by inserting <inline-formula> <tex-math>$2N$ </tex-math></inline-formula> TLs in the center of the proposed filter, extra <inline-formula> <tex-math>$2N$ </tex-math></inline-formula> RZs can be generated accordingly. Because of limited pages, only two selected examples are listed for demonstration. Finally, two fabricated circuits for BSFs I and II are fabricated at 1 GHz for experimental demonstration. Excellent agreement between the simulated and measured results is achieved so as to successfully prove the proposed synthesis theory.","PeriodicalId":13272,"journal":{"name":"IEEE Transactions on Microwave Theory and Techniques","volume":"73 4","pages":"2376-2388"},"PeriodicalIF":4.1,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143809009","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}

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IEEE Open Access Publishing IEEE 开放存取出版

IF 4.1 1区工程技术

IEEE Transactions on Microwave Theory and Techniques Pub Date : 2024-10-08 DOI: 10.1109/TMTT.2024.3466589

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A Miniaturized Coupler-Integrated Rectenna Element to Eliminate Hybrid-Coupler Circuit for Polarization Insensitive Wireless Power Transmission

IF 4.1 1区工程技术

IEEE Transactions on Microwave Theory and Techniques Pub Date : 2024-10-04 DOI: 10.1109/TMTT.2024.3468728

Vikas Kumar Malav;Ashwani Sharma

{"title":"A Miniaturized Coupler-Integrated Rectenna Element to Eliminate Hybrid-Coupler Circuit for Polarization Insensitive Wireless Power Transmission","authors":"Vikas Kumar Malav;Ashwani Sharma","doi":"10.1109/TMTT.2024.3468728","DOIUrl":"https://doi.org/10.1109/TMTT.2024.3468728","url":null,"abstract":"In wireless power transfer (WPT), rectenna is utilized to wirelessly charge the Internet of Things (IoT) nodes. The harvesting performance of the rectenna depends on the wave polarization; thus, a polarization-insensitive (PoI) rectenna is desired to allow free rotation of the IoT nodes. Typically, a dual linearly polarized (DLP) antenna is employed for this, and to achieve full PoI, the prior arts emphasize the necessity to insert a hybrid coupler (HC) between the rectifiers and the DLP antenna. However, the use of complex circuits, i.e., HC, matching networks (MNs), and rectifiers, degrades the power conversion efficiency (PCE) and increases rectenna size. Therefore, in this article, a new rectenna system is analytically evolved having an HC-like feature to achieve PoI without employing an HC circuit. Hence, a fully integrated dual circularly polarized rectenna (DCPR) is proposed which simultaneously achieves the desired PoI performance together with enhanced PCE and miniaturization. The proposed design was experimentally validated. The results show a 126% enhancement in PCE by the proposed DCPR over the conventional HC-based rectenna where both achieve PoI and the former is miniaturized. Hence, the proposed DCPR is a good rectenna contender for wireless charging of randomly oriented miniature IoT nodes.","PeriodicalId":13272,"journal":{"name":"IEEE Transactions on Microwave Theory and Techniques","volume":"73 4","pages":"2453-2460"},"PeriodicalIF":4.1,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143800973","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}

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Railways Temperature Sensing and Monitoring Based on Passive Harmonic RFID Systems

IF 4.1 1区工程技术

IEEE Transactions on Microwave Theory and Techniques Pub Date : 2024-10-04 DOI: 10.1109/TMTT.2024.3464450

Vinicius Uchoa Oliveira;Paulo Capitão;Nuno Borges Carvalho

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A Gain Cell With Unilateralization and Gain-Enhancement Techniques for High-Gain Distributed Amplifier 采用单边化和增益增强技术的增益单元，适用于高增益分布式放大器

IF 4.1 1区工程技术

IEEE Transactions on Microwave Theory and Techniques Pub Date : 2024-10-03 DOI: 10.1109/TMTT.2024.3464638

Jianquan Hu;Kaixue Ma;Changzi Xie;Bing Liu;Quanyuan Feng

{"title":"A Gain Cell With Unilateralization and Gain-Enhancement Techniques for High-Gain Distributed Amplifier","authors":"Jianquan Hu;Kaixue Ma;Changzi Xie;Bing Liu;Quanyuan Feng","doi":"10.1109/TMTT.2024.3464638","DOIUrl":"https://doi.org/10.1109/TMTT.2024.3464638","url":null,"abstract":"This article presents a novel circuit topology of gain cell for high-gain and broad-bandwidth distributed amplifier (DA). To enhance the gain with no deterioration in terms of bandwidth, no additional dc power dissipation and no increment of chip area, the unilateralization, interstage series-resonance, inductive-peaking, and current-reused techniques are incorporated dexterously into the proposed gain cell. The detailed analysis of gain enhancement and bandwidth improvement benefiting by the proposed gain cell is evaluated combined with simulation experiments. Experiments indicate that, by using the same process, the DA using the proposed gain cells achieves a gain improvement in excess of 8 dB larger than the DA using conventional gain cell without sacrificing the upper cutoff frequency, chip size, and dc power dissipation. Based on the theoretical analysis, a design methodology for high-gain DA is developed, and two single-stage DA prototypes, denoted by DA1 and DA2, are designed and implemented by using 0.25-<inline-formula> <tex-math>$mu $ </tex-math></inline-formula>m GaAs pseudomorphic high electron-mobility transistor (pHEMT) process to contrastively verify the proposed techniques. The DA1, using the proposed gain cell without unilateralization technique, provides a high average gain up to 19 dB, 14-dBm OP<inline-formula> <tex-math>$_{1,{dB}}$ </tex-math></inline-formula>, and 2.5-dB typical noise figure across the frequency range from 2.8 to 24 GHz, while the DA2 features an average gain of 18.5 dB and 15-dBm OP<inline-formula> <tex-math>$_{1,{dB}}$ </tex-math></inline-formula> in the frequency range from 2.8 to 27.2 GHz with a chip area of 2.52 mm2.","PeriodicalId":13272,"journal":{"name":"IEEE Transactions on Microwave Theory and Techniques","volume":"73 4","pages":"2147-2156"},"PeriodicalIF":4.1,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143800879","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}

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Design and Analysis of Ka-Band Power Amplifier With Sandwiched-Coupler-Balun and Folded-T-Line Power Combiner 夹芯-耦合器- balun和折叠t线功率合流器ka波段功率放大器的设计与分析

IF 4.1 1区工程技术

IEEE Transactions on Microwave Theory and Techniques Pub Date : 2024-10-03 DOI: 10.1109/TMTT.2024.3465932

Kenan Xie;Rundi Wu;Fanyi Meng;Kaixue Ma;Kiat Seng Yeo;Keping Wang

{"title":"Design and Analysis of Ka-Band Power Amplifier With Sandwiched-Coupler-Balun and Folded-T-Line Power Combiner","authors":"Kenan Xie;Rundi Wu;Fanyi Meng;Kaixue Ma;Kiat Seng Yeo;Keping Wang","doi":"10.1109/TMTT.2024.3465932","DOIUrl":"https://doi.org/10.1109/TMTT.2024.3465932","url":null,"abstract":"This article presents a two-way current-combining Ka-band power amplifier (PA) in a 130-nm SiGe BiCMOS process. A two-way power-combining network composed of sandwiched-coupler-balun (SCB) and folded-T-line (also known as meander line) is utilized to realize low-loss broadband large-signal impedance matching under a high impedance transformation ratio. Parallel peaking inductance is also employed in the cascode amplifiers to improve the power gain and efficiency, and the quality factor (Q factor) of the peaking inductance is considered during the design process. The symmetrical interstage matching network (ISMN) between the driver and two output stages (OAs) is utilized to improve large-signal performance under broadband operation. The measurement result shows that the proposed PA has a peak small-signal gain of 30.5 dB at 34.8 GHz and a 3-dB bandwidth of 10 GHz (31–41 GHz). At 35 GHz, the PA achieves a 23.5-dBm Psat with 33.9% peak power added efficiency (PAE) and 22.2-dBm OP1dB. Across 31–39 GHz, the Psat and peak PAE of the PA remain 22.7–23.8 dBm and 24.5%–33.9%, respectively. For modulated signal tests, this PA demonstrates −25.4-/ −26.1-/−25.4-dB rms error vector magnitude (EVM) and −25.3-/−27.5-/−25.3-dBc adjacent-channel power leakage ratio (ACLR) at 35/37/39 GHz with a 250-MSym/s 64-quadratic-amplitude modulation (QAM) signal, and it also demonstrates −25.3-/−25.1-/−25.3-dB rms EVM and −26.3-/−27.7-/−27.1-dBc ACLR at 35/37/39 GHz with a 400-MSym/s 64-QAM signal.","PeriodicalId":13272,"journal":{"name":"IEEE Transactions on Microwave Theory and Techniques","volume":"73 1","pages":"144-155"},"PeriodicalIF":4.1,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142938299","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}

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