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...

Ngày tải lên: 27/11/2015, 11:11

... 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 repositor...

Ngày tải lên: 12/09/2012, 15:05

... 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...

Ngày tải lên: 27/10/2013, 23:15

... 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 band...

Ngày tải lên: 15/01/2014, 15:59

... 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...

Ngày tải lên: 22/02/2014, 09:20

... 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 Procee...

Ngày tải lên: 16/03/2014, 16:20

Ngày tải lên: 23/03/2014, 22:21

... 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, Unive...

Ngày tải lên: 21/06/2014, 03:20

... 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...

Ngày tải lên: 21/06/2014, 05:20

... 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,...

Ngày tải lên: 21/06/2014, 11:20

... 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 progra...

Ngày tải lên: 21/06/2014, 18:20

... 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 physi...

Ngày tải lên: 21/06/2014, 18:20

... 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 an...

Ngày tải lên: 21/06/2014, 19:20

... 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 acceptab...

Ngày tải lên: 12/08/2014, 18:21