Novel design implementation of a broadband and highly efficient doherty power amplifier
Novel design implementation of a broadband and highly efficient doherty power amplifier
... the λ/4-transmission line with viii Abstract an adaptive, compact and broadband alternative A highly linear, varactor-based impedance transformer is placed at the output of the carrier amplifier, ... 13 1.12 Schematic diagram of a class E power amplifier 14 1.13 Voltage and current waveforms of a class E power amplifier 14 1.14 Schematic diagram of a class F amplifier ... 1.3 Research Focus 23 the design A photograph of the die of this transistor is shown in Figure 1.22 source n+ GaAs Schottky gate drain SiN Lg GaAs/AlGaAs layers InGaAs GaAs/AlGaAs layers GaAs semi-insulating...
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The Design and Implementation of a Log-Structured File System
... purpose The separate data area of these database systems means that they not need the segment cleaning mechanisms of the Sprite LFS to reclaim log space The space occupied by the log in a database system ... log as the most up to date ‘‘truth’’ about the state of the data on disk The main difference is that database systems not use the log as the final repository for data: a separate data area is reserved ... has the disadvantage of increasing the amount of data lost during a crash For this paper we will assume that crashes are infrequent and that it is acceptable to lose a few seconds or minutes of...
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Design and Implementation of a Three-Phase Induction Motor Control Scheme
... processes and variables are modelled mathematically Furthermore, the MATLAB program can convert a MATLAB design into a C-code design in a relatively straightforward manner Hence, this stage of the ... two-phase currents to generate a means of instantaneously controlling the torque and flux Field-orientated controllers require control of both magnitude and phase of the AC quantities and are, ... the induction motor s many advantages are clearly explained Wildi also presents the two types of induction motors: “the squirrel cage induction motor and the “wound motor An explanation of the...
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Tài liệu Experiences in Design and Implementation of a High Performance Transport Protocol doc
... Efficiency and Fairness Characteristics • Takes 7.5 seconds to reach 90% of the link capacity, independent of BDP • Satisfies max-min fairness if all the flows have the same end-to-end link capacity ... (Additive Increase Multiplicative Decrease) • Fair: max-min fairness • Stable: globally asynchronously stable • But, inefficient and not scalable – In grid networks (with high bandwidth-delay product) ... shortcomings of TCP • We explained the design rationale and implementations details in this paper Future Work • Bandwidth Estimation • CPU utilization – Self-clocking – Code optimization • Theoretical...
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Tài liệu Báo cáo khoa học: "DESIGN AND IMPLEMENTATION OF A LLXICAL DATA BASE " docx
... be of primary importance for any "real life" system involving a large lexical data base is what I would call "practical requirements" and has to with the complexity of the task of creating a lexical ... instance, a translation system or any other type of natural language processing program that must be able to handle very large amounts of text necessitates dictionaries of substantial size, of ... order of at least tens of thousands of entries, perhaps even more than I00,000 lexical entries Needless to say the task of creating as well as the one of updating such huge databases represents an...
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The Design and Implementation of a Sequence Database System * docx
... supports relational data as well as sequencedata, using a novel design paradigm of enhancedabstractdata types (BADTs ) The systemimplementation basedon this paradigmallows sequence relational queriesto ... PIVceeding of the ACM SIGMOD Conference on Management of Data, May 1994 [CS92] RakeshChandmand Arie Segev.ManagingTemporalFinancial Data in anExtensible Database. In Proceedings of the International Conference ... that drill down and up the dimensions) There are also severalopen researchissuesin the design of systemsbasedon the E-ADT paradigm, and in extensions of the paradigm to handle optimizations that...
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Báo cáo hóa học: " Advancing donor management research: design and implementation of a large, randomized, placebo-controlled trial" pot
... water [abstract] J Heart Lung Transpl 2009, 28:S71 doi:10.1186/2110-5820-1-20 Cite this article as: Ware et al.: Advancing donor management research: design and implementation of a large, randomized, ... 4California Transplant Donor Network, Oakland, CA, USA 5Department of Medicine, University of California, San Francisco, CA, USA 6Department of Anesthesia, University of California, San Francisco, CA, ... across a wide variety of critically ill patients with acute pulmonary edema Inhaled beta-2 agonists increase the rate of alveolar fluid clearance and reduce pulmonary edema in both animal and human...
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Báo cáo hóa học: " Research Article Design and Implementation of a Lightweight Security Model to Prevent IEEE 802.11 Wireless DoS Attacks" pdf
... IEEE 802.11 standard, except for the unicast data and management frames that are transmitted in the normal data rates, the other frames including multicast, broadcast, and control frames are transmitted ... ability to prevent both wireless DoS attacks and synchronization attacks as the following scenarios 5.3.1 DoS Attacks The details of the strategy to conduct variety types of wireless DoS attacks against ... current model It consists of two areas as authorized and attacker The authorized area consists of two wireless stations associated to the access point which follow the IEEE 802.11 standard MAC layer...
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Báo cáo hóa học: " Research Article Design and Implementation of a Generic Energy-Harvesting Framework Applied to the Evaluation of a Large-Scale Electronic Shelf-Labeling Wireless Sensor Network" pdf
... know that the capacitance (stated in terms of the amount of charge (Q) stored at a given voltage drop (across the capacitor)) of a capacitor is given by (1) (Note that: the SI unit of capacitance ... is the farad; farad = coulomb per volt; typical capacitances are measured in microfarads or picofarads) 5.2.1 The Virtual Capacitor To implement the law of Coulomb, a TinyOS application was developed ... Castalia [10] was created out of the need to have a simulator designed for WSN research It has advanced and accurate radio and wireless channel models Castalia is built on OMNeT++, a framework which...
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báo cáo hóa học:" Research Article Design and Implementation of a Testbed for IEEE 802.15.4 (Zigbee) Performance Measurements" doc
... for that particular packet All of these packets are picked up by BaseStation.java listening on the USB port and it saves each consecutive packet in a file for future analysis A new file is created ... created for each trial A second Java program (Analyze.java) was developed to analyze the saved files containing the received packets Since the transmitted data is known, this program can easily calculate ... channel, the transmitter node always transmits the same data packet The first octets are AM BER = header information and the dummy data payload is decimal number 85 which was chosen simply because...
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báo cáo hóa học:" Research Article Design and Implementation of a Single-Frequency Mesh Network Using OpenAirInterface" docx
... channel measurements which can be used for channel characterization and capacity analysis [2] Apart from a general overview of OpenAirInterface, in this paper we present OpenAirMesh a specification ... node Variable bit-rate traffic channel with negotiated QoS parameters used by the mesh network to transport data traffic corresponding to a particular flow Table 4: Transport and physical channels Each ... norm of a vector a is denoted by a and the Frobenius norm of a matrix A is denoted by A F E denotes expectation, and EURASIP Journal on Wireless Communications and Networking Table 1: Hardware...
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Báo cáo hóa học: "Design and implementation of a real time and train less eye state recognition system" docx
... and implementation of a real time and train less eye state recognition system Mohammad Dehnavi*1 and Mohammad Eshghi1 ECE Department, Shahid Beheshti University, Tehran, Iran *Corresponding author: ... light, and the color of eyebrow and eyelash highly affect the accuracy of the proposed algorithm in [10] Algorithms in [11, 15, 16] have a training phase and also their hardware implementation ... Authors of [6, 7] use the fact that the iris and pupil are darker than skin and white part of the eye Authors of [11] proposed an algorithm based on the cascade AdaBoost classifier In [12], a...
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Báo cáo y học: "Practising evidence-based medicine: the design and implementation of a multidisciplinary team-driven extubation protocol" pptx
... potentially accelerate decision-making with regard to extubation; and to assess the safety and feasibility of our approach Materials and method The intervention was carried out in a 14-bed medical/surgical ... evidence-based medicine into the setting of the ICU by promoting a multidisciplinary approach to extubation, and to design a protocol that was acceptable to all medical staff involved in the extubation ... criticism, and feedback was given on a regular basis Based on the feedback, the protocol was regularly re-evaluated and updated Nurses and RCPs responded favourably to the MDT-driven extubation protocol...
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Từ khóa: design and implementation of a shared health maintenance module in a us integrated healthcare delivery networkdesign and implementation of a sampling programsystems and the institutional capacity for the implementation of a national marine policywavefront systolic algorithms for implementation of stereo vision and obstacle avoidance computations on a very low power mimd many core parallel architecture applications for mobile systems and wearable visual guidancethe evolution and implementation of a self help program for family caregiversdetailed design of a shell and tube heat exchangerproduct of a vector and a scalarthe product of a vector and a scalar is always a vectorcross product of a scalar and a vector proofcurl of product of a scalar and a vector proofproduct of a scalar and a vector proofdot product of a vector and a scalarcross product of a vector and a scalardesign process of a washing machineangle sum of a triangle and quadrilateralNghiên cứu sự biến đổi một số cytokin ở bệnh nhân xơ cứng bì hệ thốngNghiên cứu sự hình thành lớp bảo vệ và khả năng chống ăn mòn của thép bền thời tiết trong điều kiện khí hậu nhiệt đới việt namBiện pháp quản lý hoạt động dạy hát xoan trong trường trung học cơ sở huyện lâm thao, phú thọGiáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôitNGHIÊN CỨU CÔNG NGHỆ KẾT NỐI VÔ TUYẾN CỰ LY XA, CÔNG SUẤT THẤP LPWAN SLIDEPhát triển mạng lưới kinh doanh nước sạch tại công ty TNHH một thành viên kinh doanh nước sạch quảng ninhPhát hiện xâm nhập dựa trên thuật toán k meansNghiên cứu về mô hình thống kê học sâu và ứng dụng trong nhận dạng chữ viết tay hạn chếNghiên cứu tổng hợp các oxit hỗn hợp kích thƣớc nanomet ce 0 75 zr0 25o2 , ce 0 5 zr0 5o2 và khảo sát hoạt tính quang xúc tác của chúngĐịnh tội danh từ thực tiễn huyện Cần Giuộc, tỉnh Long An (Luận văn thạc sĩ)Tìm hiểu công cụ đánh giá hệ thống đảm bảo an toàn hệ thống thông tinSở hữu ruộng đất và kinh tế nông nghiệp châu ôn (lạng sơn) nửa đầu thế kỷ XIXChuong 2 nhận dạng rui roKiểm sát việc giải quyết tố giác, tin báo về tội phạm và kiến nghị khởi tố theo pháp luật tố tụng hình sự Việt Nam từ thực tiễn tỉnh Bình Định (Luận văn thạc sĩ)Nguyên tắc phân hóa trách nhiệm hình sự đối với người dưới 18 tuổi phạm tội trong pháp luật hình sự Việt Nam (Luận văn thạc sĩ)Giáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vậtBÀI HOÀN CHỈNH TỔNG QUAN VỀ MẠNG XÃ HỘIĐổi mới quản lý tài chính trong hoạt động khoa học xã hội trường hợp viện hàn lâm khoa học xã hội việt namMÔN TRUYỀN THÔNG MARKETING TÍCH HỢPQUẢN LÝ VÀ TÁI CHẾ NHỰA Ở HOA KỲ