Antennas. From theory to practice by Yi Huang PDF

By Yi Huang

ISBN-10: 0470510285

ISBN-13: 9780470510285

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

Antennas: from conception to Practice discusses the fundamentals of contemporary antenna layout and concept. built in particular for engineers and architects who paintings with radio communications, radar and RF engineering, this publication deals useful and hands-on therapy of antenna conception and strategies, and offers its readers the abilities to examine, layout and degree numerous antennas.

Key features:

  • Provides thorough assurance at the fundamentals of transmission traces, radio waves and propagation, and antenna research and design
  • Discusses commercial general layout software program instruments, and antenna size gear, 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 adventure from either academia and industry

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

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Additional info for Antennas. From theory to practice

Sample text

2 Use an example to explain what a complex number means in our daily life. 3 Given vectors A = 10xˆ + 5yˆ + 1ˆz and B = 5ˆz, find a. 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.

8 Which frequency bands have been used for radar applications? Give an example. 5 dB in W and 40 dBμV/m in V/m and μV/m. 10 Explain the concepts of the electric field and magnetic field. How are they linked to the electric and magnetic flux density functions? 11 What are the material properties of interest to our electromagnetic and antenna engineers? 12 What is the Lorentz force? Name an application of the Lorentz force in our daily life. 13 If a magnetic field on a perfect conducting surface z = 0 is H = 10 cos(10t − 5z)x, ˆ find the surface current density Js.

Of liquids, electric or gravitational, flowing out of any closed surface and the result of inner sources and sinks, such as electric charges or masses enclosed within the closed surface. As a result, it is not possible for electric fields to form a closed loop. e. E = 0. 33) This shows that the divergence of the magnetic field (∇ rB) is always zero, which means that the magnetic field lines are closed loops; thus, the integral of B over a closed surface is zero. 35) where B and D are replaced by the electric field E and magnetic field H to simplify the equations and they will not appear again unless necessary.

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Antennas. From theory to practice by Yi Huang


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