2022 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS)最新文献

Asymmetrical Continuous Mode Doherty Power Amplifier Using Complex Combining Load Impedance 基于复合负载阻抗的非对称连续模式多尔蒂功率放大器

2022 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2022-04-19 DOI: 10.1109/WMCS55582.2022.9866245

Debatrayee Roychowdhury, J. Kitchen

引用次数: 1

Metal Additive Fabrication and Characterization of Horn Antenna 喇叭天线的金属增材制造与特性研究

2022 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2022-04-19 DOI: 10.1109/WMCS55582.2022.9866480

Sheikh Dobir Hossain, Bhushan Lohani, Ryan M. Price, Robert C. Roberts

引用次数: 0

Energy Flow for Reflecting & Interacting Beams 反射和相互作用光束的能量流

2022 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2022-04-19 DOI: 10.1109/WMCS55582.2022.9866409

H. Schantz

引用次数: 0

A Voltage-Mode Design for a Spectrum Channelizer with PWM-LO Based Sub-band Gain Control 基于PWM-LO子带增益控制的频谱信道器的电压模式设计

2022 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2022-04-19 DOI: 10.1109/WMCS55582.2022.9866430

Ki Yong Kim, D. Pan, R. Gharpurey

引用次数: 0

A Sub-100μW 2GHz OOK PA for IoT Applications 物联网应用的Sub-100μW 2GHz OOK PA

2022 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2022-04-19 DOI: 10.1109/WMCS55582.2022.9866357

Kejia Wang, Sravya Alluri, Xinyu Zhang, V. Leung

引用次数: 0

Hip Motion Measurement and Classification Using Millimeter Wave Radar and Convolutional Neural Networks 基于毫米波雷达和卷积神经网络的髋部运动测量与分类

2022 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2022-04-19 DOI: 10.1109/WMCS55582.2022.9866093

Drew G. Bresnahan, Yang Li

引用次数: 0

A New Impedance Model for Differentially-fed Proximity-Coupled Microstrip Patch Antennas 差分馈电近耦合微带贴片天线的新阻抗模型

2022 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2022-04-19 DOI: 10.1109/WMCS55582.2022.9866490

Nim R. Ccoillo Ramos, J. Salazar-Cerreno

引用次数: 0

Design, Modeling, and Simulation of a 2.4 GHz Near-field Phased-Array based Wireless Power Transfer System for Brain Neuromodulation Applications 2.4 GHz近场相控阵无线电力传输系统的设计、建模与仿真

2022 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2022-04-19 DOI: 10.1109/WMCS55582.2022.9866412

N. Saha, I. Mahbub

{"title":"Design, Modeling, and Simulation of a 2.4 GHz Near-field Phased-Array based Wireless Power Transfer System for Brain Neuromodulation Applications","authors":"N. Saha, I. Mahbub","doi":"10.1109/WMCS55582.2022.9866412","DOIUrl":"https://doi.org/10.1109/WMCS55582.2022.9866412","url":null,"abstract":"To avoid interruption of experiment and risk of infection, wireless power transfer (WPT) techniques have been used to eliminate the bulky wires and batteries attached to the animals in rodent electrophysiological applications for long-term in-vivo electrophysiological recordings. Headstage-based neuromodulation device has become one of the most popular methods for neural stimulation in recent times. In this work, a wireless power transfer system is designed which provides a constant power to a headstage based optogenetic stimulator. The proposed research is composed of two parts: i) a unidirectional 28 cm × 21 cm phased array transmitter antenna, and ii) an electrically small bi-directional 2.4 cm × 2.4 cm receiver antenna. A phased array transmitter antenna is designed to provide a uniform power transmission over the 27 cm × 23 cm × 16 cm rat behavioral cage area. The proposed WPT scheme utilizes a near-field power transmission scheme at 2.4 GHz frequency. Simulation results show that the transmitter antenna achieves a -24 dB and receiver antenna achieves a −27 dB return loss (S11) at the resonating frequency. The proposed WPT system shows a maximum of 24.5% power transfer efficiency (PTE) when the receiver is in the center position and is 10 cm distance apart from the transmitter, which is much higher compared to the other state-of-the-art works. The transmitter antenna steers beam from −21° to 27° in ϕ axis and −108° to 74° in θ axis which covers the maximum 6.27 cm2 area of the cage. The preliminary simulation results of the proposed WPT module show a better prospect for future optogenetics based applications.","PeriodicalId":447341,"journal":{"name":"2022 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123848784","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: 3

Guanella Transformer/Balun Implemented with Planar Transformer Technology 用平面变压器技术实现的Guanella变压器/Balun

2022 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2022-04-19 DOI: 10.1109/WMCS55582.2022.9866125

J. Mclean

{"title":"Guanella Transformer/Balun Implemented with Planar Transformer Technology","authors":"J. Mclean","doi":"10.1109/WMCS55582.2022.9866125","DOIUrl":"https://doi.org/10.1109/WMCS55582.2022.9866125","url":null,"abstract":"The planar transformer is a relatively new implementation of the conventional magnetically-coupled transformer which is widely used in switched-mode power converter designs with switching frequencies below 1 MHz. Planar transformers and the associated soft ferrite cores have evolved tremendously over the past two decades and provide outstanding performance. The planar transformer design is intrinsically compatible with printed circuit media. However, there are manifold additional merits to this approach, in particular heat transfer and power handling. As improvements are made in active devices the switching frequency of switched-mode converters has continually increased into the RF regime. The planar transformer is a conventional transformer relying exclusively on magnetic coupling for its operation; inter-winding capacitance is deleterious to its performance. Inter-winding capacitance exists in any conventional transformer, but it particularly pronounced in a planar transformer due to the stacked planar windings. Here we adapt the transmission-line or Guanella transformer techniques to the planar core to obtain improved high frequency performance. A full-wave electromagnetic simulation of a 1:4 impedance transforming Guanella balun is performed using the commercial finite element software HFSS. Essentially, the Guanella transformer/ balun absorbs the inter-winding capacitance into the design where it is complemented by the leakage inductance to provide flat high frequency response. This approach should benefit high-frequency, switched-mode power converter design as well as traditional RF applications, especially those with low impedance levels, such as matching to active devices, which are very difficult to achieve with traditional Guanella designs.","PeriodicalId":447341,"journal":{"name":"2022 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128751677","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

RCS Reduction of an Object for an Arbitrarily-Polarized Signal Using an Active Microstrip Antenna 利用有源微带天线对任意极化信号进行对象的RCS减小

2022 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2022-04-19 DOI: 10.1109/WMCS55582.2022.9866212

Vani Vellanki, D. Jackson, D. Onofrei, S. Sengupta

引用次数: 0