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Yi Huang's Antennas. From theory to practice PDF

By Yi Huang

ISBN-10: 0470510285

ISBN-13: 9780470510285

Practical, concise and entire reference for the fundamentals of recent antenna design

Antennas: from concept to Practice discusses the fundamentals of contemporary antenna layout and concept. constructed particularly for engineers and architects who paintings with radio communications, radar and RF engineering, this publication bargains sensible and hands-on therapy of antenna concept and methods, and offers its readers the talents to examine, layout and degree a number of antennas.

Key features:

  • Provides thorough assurance at the fundamentals of transmission traces, radio waves and propagation, and antenna research and design
  • Discusses business normal 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 via authors who're specialists in antenna layout, with adventure from either academia and industry

This ebook should 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 is usually used as a textbook for complex scholars coming into a career during this box

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Additional resources for Antennas. From theory to practice

Example text

R Power P is defined as the amount of work done by an electrical current, or the rate at which electrical energy is transmitted/consumed. The SI unit of power is the Watt (W). When an electric current flows through a device with resistance, the device converts the power into various forms, such as light (light bulbs), heat (electric cooker), motion (electric razor), sound (loudspeaker) or radiation for an antenna. Ohm’s law is the fundamental theory for electrical circuits. It reveals how the current, voltage and resistance are linked in a DC circuit.

Permeability is not sensitive to frequency or temperature. Most materials, including conductors, have a relative permeability very close to one. 28) This is called the Lorentz force. The particle will experience a force due to the electric field QE, and the magnetic field Qv × B. 13. 13 James Clerk Maxwell ∇× is the curl operator, called rot in some countries instead of curl; ∇ r is the divergence operator. Here we have both the vector cross product and dot product. Maxwell’s equations describe the interrelationship between electric fields, magnetic fields, electric charge and electric current.

46) where m = 1/(Rin G L ) and should be greater than 1. It should be pointed out that lumped L networks have no degree of freedom to optimize the bandwidth, whilst the bandwidth is actually a very important consideration of many applications. To resolve this problem, one should consider adding further reactive elements to create T or π networks to optimize the overall bandwidth. 14(a). 47) Step 2: since Z L and jX1 are in series, the composite load impedance can be obtained as Z L N = Z L + jX1 .

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Antennas. From theory to practice by Yi Huang

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