... the half wavelength dipole antenna and gd is the gain of the dipole which is 1. 64 In terms of dBi, it is 2 .15 dB Hence, Equation 17 becomes GdBd = GdBi − 2 .15 dB (18 ) 2. 5 EIRP and ERP In order to ... length of the antenna as shown in Equation (13 ) (Balanis, 20 05) below Vin = Ei · le (13 ) 2. 4 Gain Gain is one of the parameters that describe an antenna’s radiating ability The absolute gain of ... definition of the concept of effective length, we introduce as shown in Fig the definitions of input current and induced voltage for a general antenna z q P aq r + le B Vin - A Iin Fig Coordinate used in...
... written into Equation 52 − + + V1 = s 11 V1 + s 12 V2 (52a) − V2 (52b) = + s 21 V1 + + s 22 V2 − + Substituting the first of Equation 45 and Equation 49 into Equation 52, solving for V1 /V1 and − ... /V1 and − /V+ gives V2 − V1 s 12 s 21 s L (53) + = Γrant = s 11 − s s − V1 22 L 21 Operating Range Evaluation of RFID Systems − V2 + V1 Hence, = s 21 − s 22 s L (54) s 21 (55) − s 22 s L Equation 53 illustrates ... voltage (V) Energy for Writing RAM ∼ ∞ 12 ∼ 70 12 ∼70ns Overwrite 3.3 ∼ EEPROM 13 0(μm )2 10 5 20 0 3 10 ms Erase + Write 15 ∼ 20 10 0μJ FeRAM ∼80(μm )2 10 10 ∼ 10 12 11 0 0 .1 s Overwrite ∼ 3.3 0.00 01 J Table...
... Introduction Recently there has been a rapidly growing interest in RFID systems and its applications Operating frequencies including 12 5 KHz 13 4 KHz and14 0 KHz 14 8.5 KHz LF band, 13 .56 MHz HF band and 868 ... NN of publications de publicações 40 35 30 25 20 15 10 20 02 2003 20 04 20 05 year Ano 20 06 20 07 20 08 20 09 Fig Number of publications specifically for RFID antennas in the IEEE, in a sample space of ... directivity, gain and radiation efficiency for the antenna in Figure 14 Design of RFID Coplanar Antenna with Stubs over Dipoles 61 For the gain calculation of the antenna in Figure 14 , one takes...
... Range (V) < 12 5 12 5 to < 25 0 25 0 to < 500 500 to < 10 00 10 00 to < 15 00 15 00 to < 20 00 ≥ 20 00 The Interaction of Electrostatic Discharge and RFID 15 9 Introduction to RFID Radio Frequency Identification ... antennas and higher gain of the reader antennas ( ~11 dBi over the entire band) 15 1 Accurately Read Tag (%) Fully Printable Chipless RFID Tag 10 0 80 Maximum number of bits =13 60 40 20 15 25 35 ... Voltage 10 to 20 % Relative Humidity Means of Static Generation 65 to 90% Relative Humidity 35,000 12 ,000 6,000 7,000 20 ,000 18 ,000 1, 500 25 0 10 0 600 1, 20 0 1, 500 Walking across carpet Walking on vinyl...
... Symposium on Circuits and Systems(ISCAS), pp 18 39 -18 42, May 20 07 Gilbert, H.; Robshaw, M & Seurin, Y (20 08) HB : Increasing the Security and Efficiency of HB+, Proceedings of Advances in Cryptology - ... Radio Frequency Identification Design and Applications Fig 14 Communication ranges of a tag and a reader Requirements P1 1) Authentication 2) Confidentiality 3) Anti-tracking 4) Anti-cloning 5) Anti-DoS ... Pervasive Computing, Vol 5, No 1, pp 62- 69, Jan 20 06 Tuyls, P & Batina, L (20 06) RFID-tags for Anti-counterfeiting, Proceedings of CT-RSA, LNCS 3860, pp 11 5 -13 1, Feb 20 06 Tsudik, G (20 06) YA-TRAP:...
... 21 0 Advanced Radio Frequency Identification Design and Applications 2 = l2 − r2 (t1 + t )t1 (4) where a = υt1 and b = υt are used Once υ is known using (4), applying the law of cosines ... (25 0 ,25 0) and (25 0,30), and returning to (30,30) Fig 11 The experimental pseudorandom tag arrangement and the closed path trajectory Fig 12 The mobile robot velocity estimates: a) the forwarding ... set of discrete angles of rotation, given by Φ K = ( K − 1) 1 π = ( K − 1) , 29 18 K = 1, ,9 (10 ) where K = corresponds to the square pattern shown in Fig 5a) Fig shows the set of nine different...
... (Oct 20 08), pp 13 -24 , ISSN 10 45- 924 3 Skilling, H (19 57) Electrical Engineering Circuits, Second Edition, John Wiley and Sons, Inc., New York 13 Reordering of Location Identifiers for Indexing ... surface into which tags were embedded A photo of one of the tagged cylinders is shown in Figure 15 The tag had 5.65 mm (0 .22 inch) of material between it and the surrogate munition including 2. 85 ... Example frequency-domain plots are shown in 24 2 Advanced Radio Frequency Identification Design and Applications Figure 16 The left and right vertical yellow cursors are positioned at 12 0 and 13 0 kHz,...
... advantages in data processing speed 2 .1 Main hardware module 2 .1. 1 DSP and FPGA Interface Connection between the DSP and FPGA includes the 32 bit data line evm_D[ 31: 0], 20 bit address line evm_A [22 :3], ... between the FPGA and DSP Label Label 32bits 32 bits 32 bits 32 bits 32 bits 32 bits From DSP FIFO RD_CLK WR _EN Label N Channel Two 2* 32bit 32bit *2* N WR_CLK Channel One 2* 32bit Channel N 2* 32bit ... synchronization and robust transmission under wireless environment Given Tari = 12 .5us , length of is 1Tari and length of is 2Tari Detect CLOCK could be selected as follows, f = × 10 00 × KHz = 16 0KHz 12 .5...
... < 0 .11 9 0 .13 5 ≤ f < 0 .14 0 42 0 .14 0 ≤ f < 0 .14 85 37.7 0 .14 85 ≤ f < 30 -5 0. 315 ≤ f < 0.600 -5 3 .15 5 ≤ f < 3.400 13 ,5 7.400 ≤ f < 8.800 9 10 .20 ≤ f < 11 .00 10 6.765 ≤ f < 6.795 13 .553 ≤ f < 13 .567 ... activity in industry, commerce, science, medicine and others (Harrison, 20 09, Donaljdson, 20 09; Steden, 20 05; Wyld, 20 09 and 20 05; Åhlström, 20 05) When determining the interrogation zone for the given ... Jia-Ning Luo and Ming Hour Yang 14 RFID System Integration and Application Examples 19 7 Ming-Shen Jian 15 RFID System Integration 21 1 Hamid Jabbar and Taikyeong Ted Jeong 16 RFID Data Management 22 9...