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2016 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS)最新文献

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Surface waves and the ‘crucial’ propagation experiment — The key to efficient wireless power delivery 表面波和“关键”传播实验——高效无线电力传输的关键
2016 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2016-09-29 DOI: 10.1109/WMCAS.2016.7577497
K. Corum, J. Corum, Michael W. Miller
{"title":"Surface waves and the ‘crucial’ propagation experiment — The key to efficient wireless power delivery","authors":"K. Corum, J. Corum, Michael W. Miller","doi":"10.1109/WMCAS.2016.7577497","DOIUrl":"https://doi.org/10.1109/WMCAS.2016.7577497","url":null,"abstract":"By employing the Hankel transform of a radial ground current, the Zenneck surface wave, which is a non-radiating guided-wave mode, is derived. We report on its use in our replication of the `crucial' Seneca Lake experiment of 1936, which had been used to vindicate the Sommerfeld sign error myth, and which has implications in efficient wireless power transfer over great distances.","PeriodicalId":227955,"journal":{"name":"2016 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133352266","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: 10
High efficiency 20 W GaN Doherty power amplifier for 1.5 GHz and 1.8 GHz microcell base station applications 高效20w GaN Doherty功率放大器，适用于1.5 GHz和1.8 GHz微蜂窝基站应用
2016 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2016-09-29 DOI: 10.1109/WMCAS.2016.7577494
Tammy Ho, Jeff Gengler
{"title":"High efficiency 20 W GaN Doherty power amplifier for 1.5 GHz and 1.8 GHz microcell base station applications","authors":"Tammy Ho, Jeff Gengler","doi":"10.1109/WMCAS.2016.7577494","DOIUrl":"https://doi.org/10.1109/WMCAS.2016.7577494","url":null,"abstract":"The application of GaN devices for high power amplifiers is rapidly growing and changing the base station market. This paper presents two different symmetrical Doherty amplifier solutions using two of the same wideband 10 W GaN discrete transistors for 1500 MHz and 1865 MHz microcell base station applications. During the Doherty amplifier tuning process, both designs utilize a sliding load to provide a quick way to verify the maximum power and efficiency locations prior to making physical board modifications. The performance of the Doherty power amplifier designs at 1500 MHz and 1865 MHz demonstrate high gain, efficiency and linearity for the continuing development of microcell and picocell applications.","PeriodicalId":227955,"journal":{"name":"2016 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125423354","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
Efficient near-field inductive wireless power transfer for miniature implanted devices using strongly coupled magnetic resonance at 5.8 GHz 使用5.8 GHz强耦合磁共振的微型植入设备的高效近场感应无线电力传输
2016 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2016-03-01 DOI: 10.1109/WMCAS.2016.7577481
B. T. Nukala, J. Tsay, D. Lie, J. Lopez, Tam Q. Nguyen
{"title":"Efficient near-field inductive wireless power transfer for miniature implanted devices using strongly coupled magnetic resonance at 5.8 GHz","authors":"B. T. Nukala, J. Tsay, D. Lie, J. Lopez, Tam Q. Nguyen","doi":"10.1109/WMCAS.2016.7577481","DOIUrl":"https://doi.org/10.1109/WMCAS.2016.7577481","url":null,"abstract":"In this paper, an efficient wireless power transfer (WPT) design using near-field inductive 4-coil strongly-coupled-magnetic-resonance (SCMR) for powering up miniature biosensors at the ISM band of 5.8 GHz is proposed and analyzed. The miniature device has a tiny square planar inductor of size 110 × 110 μm as a receiver (RX) coil integrated on a standard silicon substrate. Another planar coil of 3 mm in diameter is designed on a FR4 substrate as the transmitting (TX) coil, which is fixed at 1 mm away from the RX coil in this study. The corresponding 4-coil SCMR system has the same TX and RX coils but with two relay coils between them, where the closest distance from the relay coil to the RX coil is also fixed at 1 mm. Analytic equations are used to describe the design for both scenarios, and 3-Dimensional (3-D) S-parameter and B-Field electromagnetic (EM) simulations show that the optimized 4-coil system consistently outperforms the optimized 2-coil WPT system by ~6-7 dB, reaching an impressive inductive power coupling of ~ -20.2 dB (i.e., ~ 1% power transfer efficiency) unto the tiny RX coil for potentially powering up novel implantable and other miniature devices without bulky batteries.","PeriodicalId":227955,"journal":{"name":"2016 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS)","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115628729","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: 8
A resonant voltage multiplier for long-range inductive power transmission 用于远距离感应电力传输的谐振电压倍增器
2016 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2016-03-01 DOI: 10.1109/WMCAS.2016.7577478
Hesam Sadeghi Gougheri, M. Kiani
{"title":"A resonant voltage multiplier for long-range inductive power transmission","authors":"Hesam Sadeghi Gougheri, M. Kiani","doi":"10.1109/WMCAS.2016.7577478","DOIUrl":"https://doi.org/10.1109/WMCAS.2016.7577478","url":null,"abstract":"A switch-based technique has been presented for efficient inductive power transmission at large coupling distances. Unlike the conventional inductive link, in which the receiver (Rx) LC-tank is utilized as a voltage source, the proposed link switches the Rx LC-tank in a novel fashion to act as a current source. Therefore, the voltage across the load (RL) can be significantly larger than the Rx LC-tank voltage. This enables the design of integrated voltage multipliers without additional off-chip capacitors and diodes, which are needed in conventional voltage multipliers. In the proposed link, the energy is first stored in the Rx coil by shorting the Rx LC-tank for several power carrier cycles. At the peak of Rx coil current, the coil energy is then transferred to the load capacitance and RL. In simulations, the proposed inductive link was capable of achieving a DC voltage of 5.7 V across RL of 100 kΩ while the peak of maximum AC voltage across the Rx coil was 1 V at the operation frequency of 1 MHz.","PeriodicalId":227955,"journal":{"name":"2016 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114805291","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
Electrically-small folded cylindrical helix antenna for Wireless Body Area Networks 用于无线体域网络的电小型折叠圆柱形螺旋天线
2016 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2016-03-01 DOI: 10.1109/WMCAS.2016.7577479
Dong Xue, B. Garner, Yang Li
{"title":"Electrically-small folded cylindrical helix antenna for Wireless Body Area Networks","authors":"Dong Xue, B. Garner, Yang Li","doi":"10.1109/WMCAS.2016.7577479","DOIUrl":"https://doi.org/10.1109/WMCAS.2016.7577479","url":null,"abstract":"The emerging technology of Wireless Body Area Networks (WBAN) is promising for many applications such as continuous, remote, healthcare monitoring. Practical WBAN implementation requires compact low-power devices. Therefore, an electrically-small antenna is needed. This paper presents wearable folded cylindrical helix (FCH) antennas designed at the 433 MHz and the 915 MHz medical frequencies. Their performance is simulated in FEKO software and compared with the conventional monopole. The antenna transmission loss is investigated on a simplified human phantom model. It is found that the FCH has similar transmission performance as the monopole while the height is significantly reduced.","PeriodicalId":227955,"journal":{"name":"2016 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134092525","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
Printed circuit board rectangular waveguide with full band microstrip to waveguide transition 印刷电路板矩形波导与全带微带波导过渡
2016 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2016-03-01 DOI: 10.1109/WMCAS.2016.7577490
Michael Gomez, R. Henderson
{"title":"Printed circuit board rectangular waveguide with full band microstrip to waveguide transition","authors":"Michael Gomez, R. Henderson","doi":"10.1109/WMCAS.2016.7577490","DOIUrl":"https://doi.org/10.1109/WMCAS.2016.7577490","url":null,"abstract":"This paper presents the design, fabrication, assembly and performance of a layered printed circuit board (PCB) dielectric rectangular waveguide that operates from 4 to 6 GHz in the H band. Metallized via fences form the waveguide walls by stacking 1.57 mm thick FR408 (εr = 3.66, tan δ = 0.0127) substrates. A microstrip probe transition is used to feed the waveguide. The bandwidth of the demonstrated waveguide is limited by the probe design and is improved with the use of a matching circuit. The feasibility of a low cost technology to realize a dielectric filled rectangular waveguide is demonstrated.","PeriodicalId":227955,"journal":{"name":"2016 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131131264","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: 2
Multi-order transmission line-radial stub networks for broadband impedance matching and power combining in a watt-level silicon power amplifier 瓦特级硅功率放大器中用于宽带阻抗匹配和功率组合的多阶传输线径向短网络
2016 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2016-03-01 DOI: 10.1109/WMCAS.2016.7577495
M. Assefzadeh, A. Babakhani
{"title":"Multi-order transmission line-radial stub networks for broadband impedance matching and power combining in a watt-level silicon power amplifier","authors":"M. Assefzadeh, A. Babakhani","doi":"10.1109/WMCAS.2016.7577495","DOIUrl":"https://doi.org/10.1109/WMCAS.2016.7577495","url":null,"abstract":"In this paper, multi-order, on-chip transmission line-radial stub ladder networks are designed to perform fundamental and harmonic impedance matching and power combining in a broadband silicon power amplifier. A 16-40GHz, 1W PA with integrated 50Ω output matching and power combining is designed in a 130nm SiGe BiCMOS process. The PA achieves a peak gain of 23.8dB and a maximum single ended output power of 30.6dBm with 21.9% power-added efficiency (PAE). On chip transmission line-radial stub-based matching and combing networks are designed and optimized for maximum efficiency to provide optimum load conditions at fundamental and harmonic frequencies and to combine the power of 16 separate amplifiers with minimized passive loss. Load pull simulations are performed in the frequency range considering load conditions up to the 5th harmonic. The simulated total loss from the output matching and the 16-to-1 combining network is less than 2.9dB in the entire frequency band.","PeriodicalId":227955,"journal":{"name":"2016 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131912092","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
Characterization of narrowband on-body wireless channels using motion capture experimentation 用动作捕捉实验表征窄带体上无线信道
2016 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2016-03-01 DOI: 10.1109/WMCAS.2016.7577487
E. Forrister, George Lee, Dong Xue, B. Garner, Yang Li
{"title":"Characterization of narrowband on-body wireless channels using motion capture experimentation","authors":"E. Forrister, George Lee, Dong Xue, B. Garner, Yang Li","doi":"10.1109/WMCAS.2016.7577487","DOIUrl":"https://doi.org/10.1109/WMCAS.2016.7577487","url":null,"abstract":"This paper presents the methods and preliminary results of a comprehensive study of the effects of body position and body motion on on-body electromagnetic wave propagation. Experiments entailed 7 human subjects performing 7 activities with 3 different narrowband antenna frequencies and 3 different antenna configurations. Measurements were taken simultaneously with a Vector Network Analyzer and a motion capture system to get accurate correlations between the human body movement and the on-body channel characteristics. The sample of results presented show a distinct relationship between the activity and the transmission signal.","PeriodicalId":227955,"journal":{"name":"2016 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129818985","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
A class-F 5 – 6 GHz 10-W GaN-on-SiC amplifier 一类5 - 6 GHz 10w GaN-on-SiC放大器
2016 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2016-03-01 DOI: 10.1109/WMCAS.2016.7577496
K. Tran, Richard Martin
{"title":"A class-F 5 – 6 GHz 10-W GaN-on-SiC amplifier","authors":"K. Tran, Richard Martin","doi":"10.1109/WMCAS.2016.7577496","DOIUrl":"https://doi.org/10.1109/WMCAS.2016.7577496","url":null,"abstract":"A Class-F 5 - 6 GHz 10 W Power Amplifier was designed with Qorvo's T2G6000528-Q3 GaN transistor using a model developed by Modelithics™. The core of this device is a 10-W die constructed with Qorvo's proven QGaN25 production process that is optimized for high power density and drain efficiency. The optimization design process involves producing model load-pull contours to identify area of loading termination for optimal power and efficiency, and simultaneously proper second-harmonic termination for high-efficiency. 5 amplifiers were built and tested. Test results showed excellent 3dB-compression performance with drain efficiency ranging from 60 to 79.5% and power above 10 W.","PeriodicalId":227955,"journal":{"name":"2016 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122956366","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 and analysis of human micro-Doppler features in foliaged environments 叶状环境中人体微多普勒特征的测量与分析
2016 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2016-03-01 DOI: 10.1109/WMCAS.2016.7577483
Willis Troy, David Lin, M. Thompson, Yang Li
{"title":"Measurement and analysis of human micro-Doppler features in foliaged environments","authors":"Willis Troy, David Lin, M. Thompson, Yang Li","doi":"10.1109/WMCAS.2016.7577483","DOIUrl":"https://doi.org/10.1109/WMCAS.2016.7577483","url":null,"abstract":"The focus of this work is on measuring and classifying human micro-Doppler features in forested environments. As a first step, measurements of human motion activities are performed in an open space environment to establish the baseline of this study. Next, forest measurements were taken at two locations in a local park for: different frequencies, activities, and number of subjects. Each experimental trial was measured for 20 seconds using a vector network analyzer (VNA) and post-processed into spectrograms, from which features are extracted to classify human motion activities.","PeriodicalId":227955,"journal":{"name":"2016 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123169185","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
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