About the tutorial this tutorial is meant to provide the readers a detailed description of the antennas used in communication systems. Studies have been undertaken covering the areas of uwb fundamentals and antenna theory. Firstly, i owe my deepest gratitude to my supervisor dr. Rogers department of electrical and computer engineering university of toronto 2012 transmitarrays have been shown to be viable architectures for achieving highdirectivity recon. Therefore, the equivalent circuit modeling of a microstrip line fed hshaped slot is also studied in this thesis. The undersigned, appointed by the dean of the graduate school, have examined the thesis entitled optimizing antenna gain with a metamaterial filter presented by julian baker, a candidate for the degree of master of science, and hereby certify that, in. As the entire transceiver was an antenna, an investigation was carried into the amount of power flow through the transceiver with respect to the input power. After completing this tutorial, you will be able to calculate the parameters of an antenna and decide which antenna suits for which type of application and why. This thesis covers study of basics and fundamentals of microstrip patch.
Contents introduction to the fourth edition ix 1 introduction to radio broadcasting and communications 1 2 radiowave propagation 5 3 transmission lines 59 4 the smith chart 95 5 fundamentals of radio antennas 123 6 highfrequency dipole and other doublet antennas 141 7 vertically polarized hf antennas 173 8 multiband and tunablewire antennas 203 9 longwire directional antennas 2. A thesis submitted with partial fulfillment of requirements for the degree of. Tunable wwanlte handset antenna and its lte mimo application. Design and performance study of smart antenna systems for. The antennas approached in this thesis are designed to operate in the ism band. The key output of the thesis presents the comparison of the total efficiency and volume of two different antenna solutions suitable for three band downlink carrier aggregation cases. Because radio link is the only transmission link in mobile. This thesis focuses on uwb antenna design and analysis. This thesis covers study of basics and fundamentals of microstrip patch antenna. Mobile phones antenna design section consists of two proposed pifa antennas. Therefore, the main goal of this thesis is to design an uwb antenna suitable for that purpose. Creating music by listening wei chai thesis defense. The loop antenna item 1 had diamond shape, sides had length in 105cm it was measured by a roulette, the loop was attached to a wooden cross item 2, this one was covered by light lacquer.
The project aims in finding the return loss and the radiation pattern. Mimo antenna for uwb communications article pdf available in international journal of communications, network and system sciences 0905. Antenna is a device that transforms guided electromagnetic waves into radiated waves and vice versa 1. The microstrip rectangular structure as shown in fig. If an antenna is able to extract a certain amount of power from a passing wave of known power density, an effective area or aperture can be calculated and associated with it.
Thebuxcomm model 8024 windom is an antenna that enables operation, 80 through 6 meters, without an antenna tuner. Most antennas are resonant devices, which operate efficiently over a relatively narrow frequency band. Sean victor hum who has generously shared his knowledge and time to guide me towards the completion of this thesis. Antenna gain is expressed as a ra tio of the effective radiated output power pout to the input power pin the gain of an antenna is a measure of power transmitted relative. Analysis of fractal antenna is done by using software named cst microwave studio suite. Reference antenna structures refer to ideal reference antennas, in this work, theoretical dipoles placed in.
This thesis is brought to you for free and open access by rit scholar works. Power patterns for an arbitrary antenna 2 the maximum sidelobe level sll is often of concern to antenna designers, particularly if the antenna was designed to focus power in a speci c direction, since sidelobes essentially represent a. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. The antilobbying clause will undermine evidence, phc and also the public interest continue studying. Analysis and design of substrate integrated waveguide. This thesis includes the design, production and measurement of a wideband dualpolarized xband aperturecoupled microstrip patch antenna.
Isotropic antenna idealized oradiates power equally in all directions dipole antennas ohalfwave dipole antenna or hertz antenna oquarterwave vertical antenna or marconi antenna parabolic reflective antenna oused for terrestrial microwave and satellite applications olarger the diameter, the more tightly directional is the beam. Cornerreflector antennas light bar mounted on the roof ahead of the antenna. In order to achieve that goal, three new uwb antennas have been designed. Antenna characteristics page 3 a 3d power pattern b 2d power pattern in rectilinear format figure 5. The success of the three previous editions of practical antenna handbook has been most gratifying. Figure 5 illustrates the simulated mimo antennas return loss with various d values. By werner wiesbeck,fellow ieee, grzegorz adamiuk,student member ieee,and christian sturm,student member ieee. Paper basicpropertiesanddesign principlesofuwbantennas. Antenna basic concepts antenna an antenna is a device to transmit andor receive electromagnetic waves. Introduction an antenna is an electrical conductor or system of conductors otransmission radiates electromagnetic energy into space oreception collects electromagnetic energy from space in twoway communication, the same.
The antenna owns an impedance bandwidth ratio of 4. Antenna fundamentals an antenna is a device for converting electromagnetic radiation in space into electrical currents in conductors or viceversa, depending on whether it is being used for receiving or for transmitting, respectively. In order to achieve that goal, three new uwb antennas have been designed and presented, analyzing the behavior of some typical antenna parameters, such as the. The receiving properties of antennas are characterized by the antenna affective area af,t,i, where the available power at the output of the receiving antenna prf is the product of the effective area of the receiving antenna in direction t,i and the flux density swm2hz1 incident from that direction. Antenna basics white paper this white paper describes the basic functionality of antennas. The patch antenna utilised the entire geometry of the transceiver as a radiation mechanism and, as a result, had a much improved gain compared to the compactfolded dipole antenna. Design and performance study of smart antenna systems for wimax applications ayman abdallah, chibli joumaa, seifedine kadry american university oft he middle east, egaila, kuwait ayman.
The antenna is microstrip line fed and its structure is based on fractal geometry where the resonance frequency of antenna is lowered by applying iteration techniques. Antennas for wireless sensor network applications enlighten. An antenna must be tuned matched to the same frequency band as the radio. This windom handbook is the most read windom antenna handbook, and the most duplicated document by both amateurs and commercial builders. It has been accepted for inclusion in theses by an authorized administrator of rit. The goal of this thesis is to design and analysis the microstrip patch antenna which covers the ultra wide band 3. The writing of the thesis was concluded in june and a nal presentation was held. In this paper we propose an approach that uses homodyne receivers. Gain enhancement of ferromagnetic composite tunable antenna a. Copyright, 2000 by elpidio latorilla first year of publication, 2000. He assisted me with the project through email and helped me in making the thesis conform with writing practice, not only in taiwan, but also in sweden. That assumption proved to be correct as i have received letters from a wide variety of people. This thesis focuses on mobile phones antenna design with brief description about the historical development, basic parameters and the types of antennas which are used in mobile phones. My examiner of the thesis was professor persimon kildal, who is the leader of the antenna research group of chalmers.
As a matter of interest, we use the windom buxcomm model 8024 up to 2 meters 146 mhz. Performance evaluation of pattern reconfigurable antennas. The gain improvement for the circular patch antenna was from 7. Antenna study and design for ultra wideband communication. Uwb antenna design thesis proposal i help to study. The wideband and dualpolarized operation is achieved through the use of hshaped coupling slots. Design of fractal slot antennas for wlan and wimax. A microstrip patch antenna consists of a dielectric substrate on one side of a. After completing this tutorial, you will be able to calculate the parameters of an antenna and decide which antenna suits for which type of. His sage advice and insightful ideas have provided tremendous help in my. Starting with hertzs antenna model followed by a short introduction to the fundamentals of wave propagation, the important general characteristics of an antenna and its associated parameters are explained. The performance and advantages of microstrip patch antennas such as low weight. Rogers department of electrical and computer engineering university of toronto 2012 transmitarrays have been shown to be viable architectures for.
Analysis and design of substrate integrated waveguidebased antennas for millimeter wave applications and submitted in partial fulfillment of the requirements for the degree of master of applied science complies with the regulations of this university and meets the accepted standards with respect to originality and quality. Analysis and design of substrate integrated waveguidebased. Extensive investigations were also carried out on two di. Antenna wires were more than 1millimeter in diameter and were covered by. Performance evaluation of pattern reconfigurable antennas in. Design of a compact microstrip patch antenna for use in. Design and realization of microstrip linear antenna array based on siw substrate integrated waveguide feed network submitted by ali ozgun in partial fulfillment of the requirements for the degree. Likewise, if a linear wire antenna develops a certain voltage across its terminals when it is excited by a. Design of a multiband stacked microstrip patch antenna for satellite. Optimizing antenna gain with a metamaterial filter the. Paper basicpropertiesanddesign principlesofuwbantennas selection of suitable antennas from the many existing types, based on understanding their characteristics, is essential for effective ultrawideband system design. The objective of this thesis is to present an analysis of antennas, which are applicable to wireless sensor networks and, in particular, to the requirements of the speckled computing network consortium.
Practical antenna design 140 150 mhz vhf transceivers online edition elpidio latorilla ledf media. Likewise, if a linear wire antenna develops a certain. Waveguide antenna on cylindrical surface bayraktar, omer ph. Study of performance of reference mimo antenna configurations. The purpose of this master thesis project is to design a compact, lowprofile, flexible, soft, directional ultrawideband uwb antenna operating in the frequency band of 0. Reference antenna structures refer to ideal reference antennas, in this work, theoretical dipoles placed in different positions depending on. Intelligent antenna sharing now viewing tristan jehan thesis defense. A mobile antenna horizontalplane pattern figure 12. Overall height of the magnetic loop antenna was near to 2 meters. This thesis is to studies how close to the theoretical optimal performance the mimo systems are with the reference antenna structures used in realistic propagation environments. Besides, the antenna is more miniature than conventional antennas that integrate an external.
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