1các yếu tố cơ bản ảnh hưởng tới chính sách thuế của việt nam trong tiến trình hội nhập kinh tế quốc tế
modern antenna design
... great circle cuts when φ = 0◦ or φ = 90◦ are the principal plane patterns Other named cuts are also used, but their names depend on the particular measurement positioner, and it is necessary to ... Often, of course, the antenna rotates and the probe is stationary Some patterns have established names Patterns along constant angles of the spherical coordinates are called either conical (constant...
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Báo cáo sinh học: "Radio wave propagation in curved rectangular tunnels at 5.8 GHz for metro applications, simulations and measurements" pot
... hollow rectangular dielectric waveguides Appl Opt 15(5), 1334– 1340 (1976) A Emslie, R Lagace, P Strong, Theory of the propagation of UHF radio waves in coal mine tunnels IEEE Trans Antenn Propag...
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Advanced Radio Frequency Identification Design and Applications Part 2 potx
... tag, which is named as forward-link Then, the tag receives the power from the interrogating wave and makes use of this power to backscatter a signal to the reader, which process is named as backward-link ... radiated from the reader antenna The contribution of Griffin et al (2006) is to add a new factor named as gain penalty in the modified Friis transmission equation The gain penalty shows to what...
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Advanced Radio Frequency Identification Design and Applications Part 3 pptx
... maximum power at the chip from the reader’s antenna and to allow the RFID antenna to send out the strongest signal 3.1 Receiving mode The passive tag in receiving mode is shown in Fig The RFID tag ... continue to be found in many branches of science and engineering One such area is fractal electrodynamics, in which fractal geometry is combined with electromagnetic theory for the purpose of investigating ... radiation, propagation and scatter problems One of the most promising areas of fractalelectrodynamics research in its application to antenna theory and design (Werner et al, 1999) The interaction...
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Advanced Radio Frequency Identification Design and Applications Part 4 pot
... Coplanar Antenna with Stubs over Dipoles F R L e Silva and M T De Melo Universidade Federal de Pernambuco Brasil Introduction Radio Frequency Identification system, initially projected for objects...
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Advanced Radio Frequency Identification Design and Applications Part 5 pptx
... resonant structure and the measurement point The condition XL = XC is important for the production of strong radiation currents Another important point to be noted is that the peak current values are...
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Advanced Radio Frequency Identification Design and Applications Part 6 potx
... expressed as γ = ( LT / M A ) (4.10) The important point to be noted in this equation is that MA has a strong effect on the step-up ratio In the following section, the calculation method and MA results...
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Advanced Radio Frequency Identification Design and Applications Part 7 pdf
... of RFID systems in small areas (Medeiros et al., 2008) 3.2 Tags on metallic objects There is a strong interest from many industries (aeronautics, automotive, construction, etc.) in tagging metal...
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Advanced Radio Frequency Identification Design and Applications Part 9 pot
... Felix-Navarro, 2004), suggesting that nitrogen containing polymers generated a strong positive charge, halogenated polymers resulted in strong positive charge, and hydrocarbon-based polymers were nearly neutral ... chart are almost electrically neutral Materials at one end (i.e., the ’negative’ end) will have a strong affinity for gathering negative charge, while those at the other end (i.e., the ’positive’ ... end) will easily release electrons, leaving a positive residual charge When a material with a strong affinity for negative charge comes into contact with a material which prefers positive charge,...
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Advanced Radio Frequency Identification Design and Applications Part 10 pdf
... passive tags, the signal strength of an RFID reader should be strong Therefore, the communication range of an RFID reader is much stronger than that of a passive tag, it is about 100m (OECD, 2007) ... holder just eavesdropping an ID of a portable reader Since the signal strength of a reader is much stronger than that of a tag, an adversary can eavesdrop a message from a reader more easily Therefore, ... Proceedings of CARDIS, LNCS 5189, pp 176-190, Sep 2008 Feldhofer, M & Wolkerstorfer, J (2007) Strong crypto for RFID tags-A comparison of low-power hardware implementations, Proceedings of IEEE...
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Advanced Radio Frequency Identification Design and Applications Part 11 docx
... Sue et al (2006) used active RFID tags for indoor localization of target object Some of them have names such as LANDMARC, VIRE, FLEXOR Kulyukin et al (2004) and Kulyukin et al (2006) used the passive ... reader transmission power and the reader recognition range seems to be linear, but we can not have strong confidence to the linear relation in this experiment Moreover, under the different conditions...
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Advanced Radio Frequency Identification Design and Applications Part 13 docx
... examined to see if the tag’s signal existed in the data set In fact, the tag’s signal was very strong in the frequency-domain plot It was concluded that the analysis and decision-making processes ... tagged surrogate’s location was not predicted, it is encouraging that the tag’s signal is very strong in the data even though it is at maximum depth at worst case position Improved data presentation, ... location where a tag stays or passes, the LID domain should provide logical closeness for the dynamic flow of tags along locations The problem is that there is no rule of assigning LIDs to RFID...
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Advanced Radio Frequency Identification Design and Applications Part 14 ppt
... time goes by 252 Advanced Radio Frequency Identification Design and Applications For applying dynamic properties of the FlowPath to LID proximity, we define the LID proximity function as shown ... proximity, we should consider the distribution of tag intervals over time Equation represents dynamic properties of the tag interval distribution The difference in the distribution of tag intervals ... experiments were performed 10 times for the same data set In the figures for experimental results, we rename the index by attaching the additional word with a parenthesis in order to distinguish each...
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Advanced Radio Frequency Identification Design and Applications Part 15 pdf
... chapter is more reliable Compatible with various standards The DSP and FPGA system both have the strong programmable and portable abilities, so the improvement and redevelopment based on it become ... speed is as high as 125MSPS, and some optimize designs are made to adapt to the broadband and the dynamic performance of the high IF carrier system 272 Advanced Radio Frequency Identification Design ... level The proprietary circuit on chips can optimize the relationship between the spurious free dynamic range (SFDR) and the signal to noise and distortion ratio (SINAD) performance when input different...
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báo cáo hóa học:" Radio wave propagation in curved rectangular tunnels at 5.8 GHz for metro applications, simulations and " potx
... hollow rectangular dielectric waveguides Appl Opt 15(5), 1334– 1340 (1976) A Emslie, R Lagace, P Strong, Theory of the propagation of UHF radio waves in coal mine tunnels IEEE Trans Antenn Propag...
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Báo cáo toán học: " Radio wave propagation in curved rectangular tunnels at 5.8 GHz for metro applications, simulations and measurements" docx
... hollow rectangular dielectric waveguides Appl Opt 15(5), 1334–1340 (1976) A Emslie, R Lagace, P Strong, Theory of the propagation of UHF radio waves in coal mine tunnels IEEE Trans Antenn Propag...
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ADVANCED RADIO FREQUENCY IDENTIFICATION DESIGN AND APPLICATIONS potx
... tag, which is named as forward-link Then, the tag receives the power from the interrogating wave and makes use of this power to backscatter a signal to the reader, which process is named as backward-link ... radiated from the reader antenna The contribution of Griffin et al (2006) is to add a new factor named as gain penalty in the modified Friis transmission equation The gain penalty shows to what ... maximum power at the chip from the reader’s antenna and to allow the RFID antenna to send out the strongest signal 3.1 Receiving mode The passive tag in receiving mode is shown in Fig The RFID tag...
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radio frequency circuit design
... as trademarks In all instances where John Wiley & Sons, Inc., is aware of a claim, the product names appear in initial capital or ALL CAPITAL LETTERS Readers, however, should contact the appropriate ... 117 frequency, 251, 255, 259 Double tuned circuit, 45–47, 290–291 DSB, see Noise DSP, 279, 283 Dynamic range, 144, 227, 230, 242–243 Effective dielectric constant, 71–73, 289 Efficiency, 122, 139, ... gain, 201, 262 Operational amplifier(s), 247–249, 254, 258–259, 262, 267, 272 Oscillator(s) Armstrong, 197–198 Clapp-Gouriet, 197–199 Colpitts, 197–200, 202 Hartley, 197–198, 202–203 injection-locked,...
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