By Atef Z. Elsherbeni
The target of this ebook is to introduce scholars and design-engineers to antenna layout and research utilizing the preferred advertisement electromagnetic software program FEKO. This ebook is essentially meant for college kids operating within the box of antenna research and layout; but the wealth of hands-on layout examples provided during this book―along with simulation details―also makes it a invaluable reference for practising engineers. The requirement for the readers of this publication is to be accustomed to the fundamentals of antenna idea; besides the fact that electric engineering scholars taking an introductory direction in antenna engineering may also make the most of this e-book as a supplementary textual content.
The key strengths of this e-book are as follows
* First, the fundamentals of antenna simulation may be awarded in a close, comprehensible, and easy-to-follow technique via examine of the best forms of radiators, i.e. dipole and loop antennas, in chapters 2 and three. this can construct the basic wisdom a scholar would wish that allows you to make the most of antenna simulation software program commonly.
* moment, comparability among theoretical research and full-wave simulation result of FEKO are given for quite a few antenna kinds, with the intention to reduction the readers with a greater figuring out of the speculation, approximations and barriers within the theoretical research, and answer accuracy.
* 3rd, and of paramount significance, is the visualization of the antenna present distribution, radiation styles, and different radiation features which are made to be had via full-wave simulations utilizing FEKO. a formal research of the radiation features via those visualizations serves as a strong academic instrument to totally comprehend the radiation habit of antennas.
The advertisement electromagnetic software program FEKO is chosen for the simulations as a result of its various benefits and recognition. particularly, this software program offers a number of solvers that may be selected for a quick and effective research looking on the kind of antenna. additionally, FEKO presents loose school room licenses to universities which can be utilized to simulate lots of the antenna configurations provided during this book.
FEKO simulation records can be found to teachers who undertake the booklet for his or her path or execs who've bought the ebook. Please touch The IET for additional info
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Additional info for Antenna analysis and design using FEKO electromagnetic simulation software
41 41 43 53 60 68 71 INTRODUCTION This chapter introduces another fundamental antenna configuration: the loop antenna. This simple, inexpensive, and very versatile antenna takes many different forms, such as a rectangle, square, triangle, ellipse, and circle. Because of the simplicity in analysis and construction, the circular loop is the most popular and has received the widest attention. In this chapter, the effect of loop circumference on the current distribution and radiation performance of the antenna is illustrated using several examples.
1 (a) FIGURE 2-10 wavelength. 5 Normalized current distribution on a wire dipole antennas: (a) Half-wavelength. 3 17 Although the analytical current distribution shows a reasonably close agreement with the full-wave results, some discrepancies are evident. In fact, the agreement between this simple analytical model and full-wave simulation deteriorates as the wire length increases, and typically full-wave simulation is required for an accurate analysis. For these finite length dipoles, the frequency change results in a stronger variation in the current distribution as the dipole length increases.
More discussion on the currents on the loop antenna is given in the next section. 3 Circular Loop Antennas 45 (a) Z/N Y/V X/U Z X (b) FIGURE 3-3 ¢ Y Designing a wire loop in CADFEKO: (a) Create ellipse tab. (b) Wire loop model in FEKO. CH003 16 April 2014; 12:4:29 46 CHAPTER 3 Wire Loop Antennas FIGURE 3-4 ¢ Creating a wire port for a loop antenna in CADFEKO. FIGURE 3-5 ¢ Geometry of a loop antenna in CADFEKO. 2 Parametric Studies Using the simulation setup given in the previous section, now let’s examine the radiation characteristics of electrically small loop antennas.