cải cách thuế ở việt nam từ năm 1990 đến nay
modern antenna design
Ngày tải lên :
27/05/2014, 03:57
... 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...
- 633
- 270
- 0
Advanced Radio Frequency Identification Design and Applications Part 2 potx
Ngày tải lên :
19/06/2014, 23:20
... 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...
- 20
- 423
- 0
Advanced Radio Frequency Identification Design and Applications Part 3 pptx
Ngày tải lên :
19/06/2014, 23:20
... 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...
- 20
- 523
- 0
Advanced Radio Frequency Identification Design and Applications Part 4 pot
Ngày tải lên :
19/06/2014, 23:20
... 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...
- 20
- 499
- 0
Advanced Radio Frequency Identification Design and Applications Part 10 pdf
Ngày tải lên :
19/06/2014, 23:20
... al., 2008; Juels & Weis, 2005; Ohkubo et al., 2003; Paise & Vaudenay, 2008; Rotter, 2008; Rieback et al., 2006; Tsudik, 2006; Vaudenay, 2007) Recently, secure protocols for RFID tag search system ... Cryptographic Approach to "Privacy-Friendly" Tags,RFID Privacy Workshop, Nov 2003 Paise, R & Vaudenay, S (2008) Mutual authentication in RFID: security and privacy, Proceedings of ACM Symposium ... Proceedings of IEEE Transactions on Wireless Communications, vol 7, no 4, pp 1400-1407, Apr 2008 Vaudenay, S (2007) On Privacy Models for RFID, Proceedings of Advances in Cryptology ASIACRYPT, LNCS...
- 20
- 376
- 0
Advanced Radio Frequency Identification Design and Applications Part 11 docx
Ngày tải lên :
19/06/2014, 23:20
... 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...
- 20
- 358
- 0
Advanced Radio Frequency Identification Design and Applications Part 13 docx
Ngày tải lên :
19/06/2014, 23:20
... 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 ... Then, we define the LID proximity function which computes the distance between LIDs with the dynamic flow of tags To determine a sequence of LIDs based on LID proximity, we construct a weighted ... Since a tag event contains several timestamped historical information, it could represent the dynamic flow of tagged items between RFID locations placed along tag routes If an RFID application...
- 20
- 414
- 0
Advanced Radio Frequency Identification Design and Applications Part 14 ppt
Ngày tải lên :
19/06/2014, 23:20
... 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...
- 20
- 393
- 0
Advanced Radio Frequency Identification Design and Applications Part 15 pdf
Ngày tải lên :
19/06/2014, 23:20
... 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...
- 14
- 419
- 0
ADVANCED RADIO FREQUENCY IDENTIFICATION DESIGN AND APPLICATIONS potx
Ngày tải lên :
26/06/2014, 23:21
... 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 ... 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...
- 294
- 366
- 0
radio frequency circuit design
Ngày tải lên :
04/07/2014, 07:47
... 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, ... and Suganda Jutamulia SiGe, GaAs, AND InP HETEROJUNCTION BIPOLAR TRANSISTORS Jiann Yuan ELECTRODYNAMICS OF SOLIDS AND MICROWAVE SUPERCONDUCTIVITY Shu-Ang Zhou Radio Frequency Circuit Design W Alan...
- 340
- 180
- 1