radio wave antenna design

... Traveling -Wave Antennas 10-1 General Traveling Waves, 475 474 CONTENTS xiii 10-1.1 Slow Wave, 478 10-1.2 Fast Waves (Leaky Wave Structure), 480 10-2 Long Wire Antennas, 481 10-2.1 Beverage Antenna, ... MODERN ANTENNA DESIGN Second Edition THOMAS A MILLIGAN IEEE PRESS A JOHN WILEY & SONS, INC., PUBLICATION MODERN ANTENNA DESIGN MODERN ANTENNA DESIGN Second Edition THOMAS ... 10-2.2 V Antenna, 482 10-2.3 Rhombic Antenna, 483 10-3 Yagi–Uda Antennas, 485 10-3.1 Multiple-Feed Yagi–Uda Antennas, 492 10-3.2 Resonant Loop Yagi–Uda Antennas, 495 10-4 Corrugated Rod (Cigar) Antenna, ...

Ngày tải lên: 27/05/2014, 03:57

... article and gives some perspectives Existing studies on radio wave propagation in curved tunnels Different approaches to model the radio wave propagation in tunnels were presented in the literature ... Steier, Waveguides: characteristic modes of 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 ... governing the radio wave propagation in straight and curved rectangular tunnels IEEE Trans Antenn Propag 57(10), 3249–3257 (2009) S Mahmoud, Characteristics of electromagnetic guided waves for communication...

Ngày tải lên: 18/06/2014, 22:20

... Chang Chapter Design of a Very Small Antenna for Metal-Proximity Applications Yoshihide Yamada 77 Chapter Using Metamaterial-Based Coplanar Waveguide Structures for the Design of Antennas on Passive ... The following chapters focus on tag antenna design The most commonly used antenna for RFID tags is the dipole antenna and a novel technique for matching the antenna impedance with the input impedance ... receiving antenna shown in Fig is a tag antenna, then the load presented to the tag antenna is a chip In fact, the transmission line between the tag antenna and the chip is very short, hence the antenna...

Ngày tải lên: 19/06/2014, 23:20

... Advanced Radio Frequency Identification Design and Applications Tag antenna design In Section 2, a few fundamental parameters such as gain, impedance match, polarisation etc, in designing antennas ... seen But it is known that this commercial antenna design is based on a patch antenna Hence, in the simulation we designed a patch antenna as the reader antenna with geometrical and electrical parameters ... two antennas (a reader antenna and a tag antenna) transmission system to be a two port system, as shown in Fig 5, in which the reader and chip are connected to the reader antenna and the tag antenna...

Ngày tải lên: 19/06/2014, 23:20

... the fabricated K3-27.5° antenna Fig 10 Photograph of the fabricated (P3) antenna (a) (b) Fig 11 Measured radiation pattern of (a) (K3-27.5°) antenna and (b) (P3) antenna Design and Fabrication ... Advanced Radio Frequency Identification Design and Applications (a) Frequency (MHz) (b) Frequency (MHz) Fig 20 Measured RL for the fabricated antenna: (a) S3-45° antenna, (b) S3-60° antenna It ... shows the return loss (RL) of the designed loop antennas of 50Ω balanced feed port, and Table summarizes the simulated results of the designed loop antennas Antenna type Return Loss (dB) BW (MHz)...

Ngày tải lên: 19/06/2014, 23:20

... 50 Advanced Radio Frequency Identification Design and Applications Salama A M A., (2010) Antennas of RFID Tags, Radio Frequency Identification Fundamentals and Applications Design Methods ... Engineering: The Theory and Design of Fractal Antenna Arrays IEEE Antennas and Propagation Magazine, Vol.41, No.5, (1999) ,page numbers (37-58) 3 Design of RFID Coplanar Antenna with Stubs over ... and presented 64 Advanced Radio Frequency Identification Design and Applications Antenna configuration and basis 2.1 UFH RFID meander-line antenna The typical dipole antenna consists of two parts,...

Ngày tải lên: 19/06/2014, 23:20

... metal-proximity tag antennas are given in Table 2.1 Some examples of metal-proximity antennas are patch antennas [2] and slot antennas [3], which can be 78 Advanced Radio Frequency Identification Design and ... construct tag antennas that are suitable for use with metallic objects, and some promising antenna types have been proposed In this chapter, design approaches for metal-proximity antennas (antennas ... Patch antenna [3] Slot antenna ・ Frequency ： 953MHz ・ Thickness : 16mm ・ Read range ： 8m ・ Researching [4] Normal mode helical antenna Table 2.1 Metal-proximity tag antennas receiving antenna...

Ngày tải lên: 19/06/2014, 23:20

... the antenna 10000 QM Q A QA B 1000 A 0.015 0.020 0.025 A/ DA/λλ Fig 3.15 Q factors for NMHA 0.030 0.035 92 Advanced Radio Frequency Identification Design and Applications 3.3 Achieving a high antenna ... gain of the antenna In electrically small antennas, GD remains almost constant at 1.8 dBi The antenna gains at points B and A are GA = -4.2 dBi and -8.2 dBi, respectively Given the small antenna ... characteristics, we fabricated a 0.02λ antenna (point B in Fig 3.16), as shown in Fig 3.17 The antenna impedances are measured with and without a 93 Design of a Very Small Antenna for Metal-Proximity Applications...

Ngày tải lên: 19/06/2014, 23:20

... efficiently both as a dipole antenna and as a microstrip antenna has been proposed (Mohammed et al., 2009) The antenna behaves as a dipole antenna in free space and acts as a patch antenna when it is attached ... useful for Using Metamaterial-Based Coplanar Waveguide Structures for the Design of Antennas on Passive UHF RFID Tags 123 designing a successful antenna on a passive UHF RFID tag Notice that ... attributed to the antenna gain of Fig 5.13 The effectiveness of the tag is confirmed by the aforementioned read-range measurement Antenna in free space Conventio nal Antenna 16mm Read range 9m Antenna...

Ngày tải lên: 19/06/2014, 23:20

... was the tag antenna The antennas were grouped into two types: a dipole and a ”patch-like” antenna The patch-like antenna would be more accurately described as a fat dipole The dipole antennas fared ... the RFID tag antenna Also, the input impedance of the RFID IC will have an impact on the design of the tag antenna A highly capacitive RFID IC will drive a requirement for the tag antenna to have ... reader module, and an antenna The tag is far more simple than the reader; we will regard it as an antenna and an integrated circuit (IC) or chip The reader antenna emits a radio- frequency (RF)...

Ngày tải lên: 19/06/2014, 23:20

... 170 Advanced Radio Frequency Identification Design and Applications Nikitin, P V., Rao, K V S., Lam, S F., Pillai, V andMartinez, ... H (2005) Power reflection coefficient analysis for complex impedances in RFIDtag design, IEEE Transactions on Microwave Theory and Techniques 53(9): 2721–2725 Ott, H W (1988) Noise Reduction Techniques ... chain, and product maintenance, etc Especially, RFID tag search system 174 Advanced Radio Frequency Identification Design and Applications which can be used to find RFID-tagged objects is one of the...

Ngày tải lên: 19/06/2014, 23:20

... range of an antenna is circular and the shape of a tag is a point For explanation, it is convenient to exchange the roles between antenna and tag, in such a way that a point shape antenna passes ... (2004) and Kim and Chong (2009) used directional antennas to estimate the current position and target objects Jia et al (2008) used multiple antennas to locate RFID tags accurately Ni et al (2004), ... support vector machine (SVM) to learn the accurate tag positions from 192 Advanced Radio Frequency Identification Design and Applications pseudo table of the tag positions Choi et al (2008) augmented...

Ngày tải lên: 19/06/2014, 23:20

... equilateral triangle 214 Advanced Radio Frequency Identification Design and Applications 3.2 Tag invisibility In RFID based mobile robot localization, it may happen that an antenna cannot have a chance ... tags right on their respective locations one by one To alleviate the 212 Advanced Radio Frequency Identification Design and Applications difficulty in tag installation, two step procedure can be ... 210 Advanced Radio Frequency Identification Design and Applications υ2 = l2 − r2 (t1 + t )t1 (4) where a = υt1 and b = υt are...

Ngày tải lên: 19/06/2014, 23:20

... electronic design Electronics associated with the receive coils can generally measure minimum signal strengths of about 5.0 µV For practical purposes, 236 Advanced Radio Frequency Identification Design ... mounting a tag on a munition 240 Advanced Radio Frequency Identification Design and Applications Evaluation and testing Experimental efforts involved the design, fabrication, and tuning of the custom ... pick-up coil a maximum of 10 percent, depending on the specific case 234 Advanced Radio Frequency Identification Design and Applications Fig Magnetic vector equipotential lines from the transmission...

Ngày tải lên: 19/06/2014, 23:20

... 250 Advanced Radio Frequency Identification Design and Applications This situation is illustrated in Fig Assume that a tag, ... tag intervals generated by any two LIDs also changes as time goes by 252 Advanced Radio Frequency Identification Design and Applications For applying dynamic properties of the FlowPath to LID proximity, ... in the query predicate, corresponding LIDs in the OLIDList should be 254 Advanced Radio Frequency Identification Design and Applications ordered closely As a result, all of LID proximity between...

Ngày tải lên: 19/06/2014, 23:20

... 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 and Applications ... value of the TRext specified by the Query command 274 Advanced Radio Frequency Identification Design and Applications The simulated waveform of the FM0 is shown in Fig 3, including preamble code ... file data introduced from other sources MATLAB Filter Design Toolbox was used in this LPF design as there are many functions to simplify the design and give quantitative effect analysis Such parameters...

Ngày tải lên: 19/06/2014, 23:20

... article and gives some perspectives Existing studies on radio wave propagation in curved tunnels Different approaches to model the radio wave propagation in tunnels were presented in the literature ... Steier, Waveguides: characteristic modes of 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 ... governing the radio wave propagation in straight and curved rectangular tunnels IEEE Trans Antenn Propag 57(10), 3249–3257 (2009) S Mahmoud, Characteristics of electromagnetic guided waves for communication...

Ngày tải lên: 20/06/2014, 04:20

... Steier, Waveguides: characteristic modes of 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 ... Klemenschits, Ernts Bonek -Radio Coverage of Tunnels by Discrete Antennas: Measurement and prediction (1995) doi:10.1186/1687-1499-2011-202 Cite this article as: Masson et al.: Radio wave propagation in ... Vauzelle, Radio wave propagation in arch-shaped tunnels: measurements and simulations using asymptotic methods CR Phys 11, 44–53 (2010) 11 TS Wang, CF Yang, Simulations and measurements of wave propagations...

Ngày tải lên: 20/06/2014, 21:20

... Advanced Radio Frequency Identification Design and Applications Tag antenna design In Section 2, a few fundamental parameters such as gain, impedance match, polarisation etc, in designing antennas ... seen But it is known that this commercial antenna design is based on a patch antenna Hence, in the simulation we designed a patch antenna as the reader antenna with geometrical and electrical parameters ... receiving antenna shown in Fig is a tag antenna, then the load presented to the tag antenna is a chip In fact, the transmission line between the tag antenna and the chip is very short, hence the antenna...

Ngày tải lên: 26/06/2014, 23:21

... Davis, W Alan Radio frequency circuit design / W Alan Davis, Krishna Agarwal p cm — (Wiley series in microwave and optical engineering) Includes index ISBN 0-471-35052-4 Radio circuits — Design and ... ELECTROMAGNETICS AND MICROWAVES Richard C Booton, Jr MICROWAVE RING CIRCUITS AND ANTENNAS Kai Chang MICROWAVE SOLID-STATE CIRCUITS AND APPLICATIONS Kai Chang RF AND MICROWAVE WIRELESS SYSTEMS Kai ... the area of analog circuit design, with primary emphasis on radio frequency electronics Some topics normally considered in electronics courses or in microwave and antenna courses are not covered...

Ngày tải lên: 04/07/2014, 07:47