2020 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications (PAWR)最新文献

{"title":"Simulation Technique for Thermal Resistance in CMOS-SOI Power Amplifier Integrated Circuits","authors":"Sravya Alluri, J. Jayamon, B. Hanafi, P. Asbeck","doi":"10.1109/PAWR46754.2020.9035995","DOIUrl":"https://doi.org/10.1109/PAWR46754.2020.9035995","url":null,"abstract":"Thermal resistance is an important design parameter for high power ICs, particularly for power amplifiers. Although the buried oxide underneath FETs in CMOS ICs presents a barrier to heat flow, the interconnect metals and surrounding oxide provide additional paths for heat-sinking. This paper describes a straightforward technique to simulate the layout-dependent thermal resistance of a CMOS-SOI IC including the interconnect effects. The technique is an adaptation of the widely-used electromagnetic solver EMX by Integrand Software to heat flow. Simulation results show that in representative layouts the thermal resistance is reduced by a factor of 1.5x to 2x by the presence of interconnects. The benefit of vias through the buried oxide is highlighted.","PeriodicalId":356047,"journal":{"name":"2020 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications (PAWR)","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133723869","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}

{"title":"2020 IEEE Radio & Wireless Week","authors":"S. Erhardt, R. Weigel, A., Koelpin, K. Tanja, R. Gómez‐García, A. Hardy, C., Crump, J. Albrecht, Q. Fan, T. Grotjohn, J. Papapolymerou","doi":"10.1109/pawr46754.2020.9036006","DOIUrl":"https://doi.org/10.1109/pawr46754.2020.9036006","url":null,"abstract":"Efficiency and linearity are key features in every communication system. In a typical transmit-receive module, the PA consumes around 70% of the total energy and, being the last stage of the transmitter, it is the main responsible for the overall system linearity. However, efficiency and linearity are contrasting features, more still in applications that make use of spectrum-efficient digital modulation schemes, such as 5G systems or new high throughput satellites. The ability of the Doherty architecture of operating at high efficiency at significant output power back-off has led the RF and microwave community to re-discover the Doherty concept and adapt it to the requirements of modern high frequency transmitters both for terrestrial and space applications. Moreover, its implementation on GaN technology has the potentials to offer game-changing advantage. This workshop aims to present recent progress on integrated Doherty Amplifiers and all the aspects related to their implementation, covering state-of-the-art GaN technology, advanced experimental characterization techniques at device/ circuit level, as well as various Doherty HPA MMIC implementations. Talks and Speakers: Integrated Doherty Power Amplifiers: Challenges and Solutions Anna Piacibello, Vittorio Camarchia, Politecnico di Torino GaN Enabling Technologies Remy Leblanc, OMMIC Foundry Load Pull Characterisation Oriented to the Design of Doherty Power Amplifiers Roberto Quaglia, Cardiff University High Power Amplifications and Integration Challenges of Active Antennas for Satellite Communication Václav Valenta, European Space Agency Design of MMIC Doherty Amplifier: Standard vs. Stacked Architecture Ferdinando Costanzo, Rocco Giofrè, Paolo Colantonio, University of Roma Tor Vergata Design of MMIC Doherty Amplifier: Multi-Doherty Approach Anna Piacibello, Vittorio Camarchia, University of Roma Tor Vergata Linearity Assessment Techniques for GaN MMICs PAs: Simulations & Experimental Characterization Nuno Borges Carvalho, University of Aveiro Workshop Solid State Power Amplification for SpaceBorne Systems Room: Bonham C Workshop Advances in SiGe BiCMOS and RF-CMOS Frontend Technologies Room: Bonham D Workshop Machine Learning and Dimensionality Reduction Techniques for RF Components and Systems: from Modeling to Linearization Room: Bonham E Organizers: Tomas Gotthans, Brno University of Technology Genevieve Baudoin, Université Paris-Est, ESIEE Paris Abstract: This workshop will review critical technologies, design challenges and recent trends in the area of space-borne solid-state high power amplification. Well established solutions for traditional RF payloads will be discussed as well as advanced techniques applied to multibeam direct radiating antennas. Systems and solutions covering frequency bands up to mm-waves will be discussed, with particular focus on high-efficiency concepts, thermal management, which are of prime importance in spaceborne systems. Advanced GaN MMIC technologies and","PeriodicalId":356047,"journal":{"name":"2020 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications (PAWR)","volume":"575 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133929753","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}

{"title":"An X-Band Sampled-Line Impedance Sensor in 250-nm GaAs","authors":"D. Donahue, M. Roberg, Z. Popovic, T. Barton","doi":"10.1109/PAWR46754.2020.9035993","DOIUrl":"https://doi.org/10.1109/PAWR46754.2020.9035993","url":null,"abstract":"This paper describes the design and characterization of an X-band MMIC sampled-line impedance sensor. The network is intended for integration into a power amplifier (PA) in applications where load impedance varies, for example in phased arrays. Scalar power detectors placed along a transmission line perform a complex measurement of the load reflection coefficient. The X-band prototype in 250-nm GaAs demonstrates the ability to implement this technique in MMIC technology, as a step towards integration into a MMIC PA. In addition to characterization of the impedance measurement for reflection coefficient magnitudes up to 0.6, the sampled line is compared to a standard 50-ohm line in terms of loss, and a standalone sampler is measured.","PeriodicalId":356047,"journal":{"name":"2020 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications (PAWR)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132188650","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}

{"title":"Digital Predistortion of a RF Power Amplifier using a Remote Closed Loop Estimator","authors":"R. Braithwaite","doi":"10.1109/PAWR46754.2020.9036001","DOIUrl":"https://doi.org/10.1109/PAWR46754.2020.9036001","url":null,"abstract":"A remote closed loop estimator that optimizes digital predistortion (DPD) of RF power amplifiers (PAs) is proposed. The observation path receiver used to measure the output of the PA is remote from the transmitter, coupled using a RF link. To make it work, the estimator must compute the DPD coefficient error using only the output signal. This differs from a standard closed loop estimator that uses time-aligned captures of both the input and output signals. It is shown that the remote closed loop estimator is robust to equalization error within the observation path.","PeriodicalId":356047,"journal":{"name":"2020 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications (PAWR)","volume":"11 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116820806","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}

{"title":"Decomposed Vector Rotation Model Sizing by Hill-Climbing Heuristic for Digital Predistortion of RF Power Amplifiers","authors":"Chouaib Kantana, O. Venard, G. Baudoin","doi":"10.1109/PAWR46754.2020.9035996","DOIUrl":"https://doi.org/10.1109/PAWR46754.2020.9035996","url":null,"abstract":"The decomposed vector rotation (DVR) model is proposed for digital predistortion (DPD) to compensate for the nonlinearities and memory effects of Power Amplifiers (PA). In this paper, we propose a new neighborhood definition for the DVR model that allows to extend the hill climbing (HC) algorithm to find the optimal structure of DVR model which provides the best compromise between modeling accuracy and complexity. The convergence of the algorithm has been verified and validated using real measurements from Class-AB PA.","PeriodicalId":356047,"journal":{"name":"2020 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications (PAWR)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123080539","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}