Read e-book online Antennas. From theory to practice PDF

By Yi Huang

ISBN-10: 0470510285

ISBN-13: 9780470510285

Practical, concise and whole reference for the fundamentals of contemporary antenna design

Antennas: from idea to Practice discusses the fundamentals of recent antenna layout and concept. constructed in particular for engineers and architects who paintings with radio communications, radar and RF engineering, this ebook deals useful and hands-on therapy of antenna idea and strategies, and offers its readers the talents to examine, layout and degree quite a few antennas.

Key features:

  • Provides thorough assurance at the fundamentals of transmission strains, radio waves and propagation, and antenna research and design
  • Discusses business usual layout software program instruments, and antenna dimension apparatus, amenities and techniques
  • Covers electrically small antennas, cellular antennas, UWB antennas and new fabrics for antennas
  • Also discusses reconfigurable antennas, RFID antennas, Wide-band and multi-band antennas, radar antennas, and MIMO antennas
  • Design examples of assorted antennas are provided
  • Written in a pragmatic and concise demeanour by means of authors who're specialists in antenna layout, with event from either academia and industry

This e-book might be a useful source for engineers and architects operating in RF engineering, radar and radio communications, looking a complete and functional advent to the fundamentals of antenna layout. The e-book can be used as a textbook for complex scholars getting into a career during this box

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Extra resources for Antennas. From theory to practice

Example text

The amplitude of vector A; b. the angle between vectors A and B; c. the dot product of these two vectors; d. a vector which is orthogonal to A and B. 4 Given vector A = 10 sin(10t + 10z)xˆ + 5y, ˆ find a. ∇ rA; b. ∇× A; c. (∇ r∇) A; d. 5 Vector E = 10e j (10t−10z) x. ˆ a. find the amplitude of E; b. plot the real part of E as a function of t; c. plot the real part of E as a function of z; d. explain what this vector means. 6 Explain why mobile phone service providers have to pay license fees to use the spectrum.

This is why the characteristic impedance of industrial standard transmissions has a constant value, normally 50 or 75 ohms, over a large frequency band, even when the line loss is not zero. 23) The loss (attenuation) is caused by the resistive loss R and the material loss G between the conductors. The phase constant is again the same as for lossless lines. 23). e. v= ω 1 =√ β LC There is no dispersion (it is not changed with frequency). 3 Terminated Transmission Line It is now clear that the voltage and current of a transmission line are distributed quantities; they are functions of the position z.

A load with an impedance of 10 − j100 is to be matched with a 50 transmission line. Design a matching network and discuss if there are other solutions available. 14(a) is a suitable matching network. 04, 80). Now let us see if there are other possible solutions. 9). In addition, we can also use T and π networks to match the load with the transmission line and the bandwidth can be controlled. Circuit Concepts and Transmission Lines 47 It is apparent that, for a given load impedance, there is more than one matching network available.

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