4. Antennas and Noise

  1. Madhavendra Richharia1 and
  2. Leslie David Westbrook2

Published Online: 7 JUN 2010

DOI: 10.1002/9780470665619.ch4

Satellite Systems for Personal Applications: Concepts and Technology

Satellite Systems for Personal Applications: Concepts and Technology

How to Cite

Richharia, M. and Westbrook, L. D. (2010) Antennas and Noise, in Satellite Systems for Personal Applications: Concepts and Technology, John Wiley & Sons, Ltd, Chichester, UK. doi: 10.1002/9780470665619.ch4

Author Information

  1. 1

    Knowledge Space Ltd, UK

  2. 2

    QinetiQ Ltd, UK

Publication History

  1. Published Online: 7 JUN 2010
  2. Published Print: 23 JUL 2010

Book Series:

  1. Wiley Series on Wireless Communications and Mobile Computing

Book Series Editors:

  1. Dr Xuemin (Sherman) Shen BSc, MSc, PhD3 and
  2. Dr Yi Pan BEng, MEng, PhD4

Series Editor Information

  1. 3

    University of Waterloo, Canada

  2. 4

    Georgia State University, USA

ISBN Information

Print ISBN: 9780470714287

Online ISBN: 9780470665619

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Keywords:

  • electromagnetic waves;
  • optical antennas;
  • receiver noise

Summary

This chapter considers how we launch and collect these electromagnetic waves efficiently, and the key device in this respect is the antenna. It provides with a basic understanding of the key system properties of antennas. Such an understanding allows us to determine the transmission (loss) between two antennas, such as might occur where a signal is broadcast from the satellite to a user terminal. It focuses primarily on radio waves and briefly discusses optical antennas (i.e. telescopes) used for remote sensing at infrared and visible light frequencies. The chapter discussed the propagation of electromagnetic waves without consideration of how we launch and recover unguided electromagnetic waves between satellites and the Earth. It highlights the various contributions to the receiver noise and factors that influence these contributions, and introduce figures of merit for the performance of a receiver.

Controlled Vocabulary Terms

electromagnetic waves; planar antenna arrays