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However, I have some minor points about the book to raise.
Firstly, the references quoted are not quite as extensive as they might be. The majority of references are taken from the Journal of Optical and Microwave Engineering, a Wiley journal which may be quite difficult to find - many of the aquisitions departments of Universities in the UK do not have complete volumes, or in many cases, any copies at all. Many good references can be obtained from the IEEE Antennas and Propagation Transactions, which are more accessible but it does, again help to have access to a good library!
Secondly, I am a little concerned about the absence of a glossary. This is a problem when there are incomplete extracts from existing papers. It can be confusing when talking about k (subscript xxx) when it is not very clear that the assumptions behind the paper presuppose a radially anisotropic dielectric layer and these are the diagonal components of the permittivity tensor! The other side to this is that when quotations from papers are as incomplete as this, the book CANNOT (and this was very sad) be used as a one stop guide to constructing numeric methods for solving the many beautiful examples in the text - you need to look to the original papers. And this occurs, sadly, many times throughout the text.
Thirdly, and this is less of a problem, there is no discussion of the stability of the resulting sets of coupled integral equations. I know that the Galerkin method has excellent prognosis for solutions in nearly all cases, but in some equations there are mild singularities in the kernels, and I really was hoping that there would be some discussion about the numerical convergence issues.
Thirdly, and this is ever so slightly more disappointing, there are no references to pattern synthesis algorithms suitable for curved surfaces. I would expect there to be a chapter on canonical synthesis methods, that is pattern synthesis using dipole or simple multipole sources positioned on curvilinear surfaces, using conventional transform theory and techniques such as the Remez exchange algorithm. This is completely missing! There is, however, a good amount of detail on element to element coupling, so this is valuable detail for engineers with access to these methods.
I would also like to see much more information on the kind of mechanical techniques used to construct these devices. This of course has a bearing on the actual values likely to occur in dielectric non-ideality and give the reader some preparation for attention to this well before other commitments are made. There are some excellent papers written on anisotropic dielectrics - Manuel Horno is one author worth looking up.
Another somewhat mising area is the subject of near field to far field transformations, which in the case of curvilinear surfaces, very interesting indeed.
I have a feeling that the missing material was possibly the result of a constraint placed on the length of the manuscript by the publisher. The author clearly is very proficient with this very difficult subject and has done a terrific job of uniting many sources into one reference book. The text is very well written and very engaging.
On the whole, I am very pleased with the book, it is fascinating and I know I will be very absorbed in it for some considerable time. Thank you, and best wishes, Prof. Kin-Lu Wong.
Pratical issues such as branch correlation and mutual coupling among antenna elements are presented. It also presents a semi-analytical approach to analyze optimum array in the presence of branch correlation and multiple cochannel interference.
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1. comprehensive coverage of antenna types and analysis techniques
2. Chapter 2 contains a nice compendium of definitions according to IEEE standards, with enough mathematical detail to make it useful in its own right.
3. Good explanations of the material. It's not a cookbook (that's good!). Balanis provides clear text and derivations of the key results, with illustrations. He hasn't watered down the level of sophistication of his topics; they aren't at the research level, but they are fully at the level of the established state of the art.
4) Error-free. I typically wrestle with a few errors or typos in a text as I repeat derivations or perform calcs in the course of my work. I haven't found any errors here so far.
Coverage of the various antenna types is pretty standard. It's in discussions of topics like the Method of Moments, reciprocity, and self- and mutual- impedance, and the method of stationary phase where the book shines--they are clear, easy to follow, with sufficient detail to solve real problems.
Shortcomings of the book are few, but include:
a) sparse or no treatment of advanced topics such as scattering, array implementation, network approach (foster's reaction theorem, relation of mutual coupling to measured scattering parameters), etc.
b) inclusion of Fortran (!) programs for the calculations. Matlab, Mathcad or just plain descriptions would be more useful. Puzzling since one Matlab file is included.
I recommend this book heartily. Engineering practicality and mathematical rigor are balanced nicely. The lack of advanced topic coverage is easily made up by going to specialty texts or the research literature. It worked well for me as a self-study text, and should work for you too.
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You won't have that problem with Jerry's book, his designs and mods are based on sound, proven mods and practices on the more popular scanners of our time. He has good color photos, and walks you through each mod step by step. He gives you a list of tools needed and how to use them.
I personally enjoyed the section on antennas. Antennas are an often overlooked part of radios, which are probably more crucial than the radio itself! Jerry covers many antenna types, as well as "Stealth Antennas". His Stealth antenna may be worth the price of the book alone if you are ever in a situation where you NEED an antenna but fear discovery. This book is Solid, well written, entertaining and provides the novice hobbyist a chance to learn new skills and techniques. Beginner or Pro, it doesn't matter, you'll enjoy this book!
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