Modern Lens Antennas for Communications Engineering

Cover Image Copyright Year: 2012
Author(s): John Thornton; Kao-Cheng Huang
Book Type: Wiley-IEEE Press
Content Type : Books
Topics: Aerospace ;  Communication, Networking & Broadcasting ;  Fields, Waves & Electromagnetics ;  Signal Processing & Analysis
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Abstract

<p><b>Lens antennas&#151;why and how they should be used more often in modern communications systems</b></p> <p>This remarkable work provides RF/microwave engineers with complete guidance on how to develop lens antennas, focusing on recent advances in communications engineering where this often overlooked technology is especially useful. It clearly demonstrates the benefits of using lens antennas in modern communication systems, featuring numerous examples, measurement data, fabrication techniques, and real-world applications.</p> <p><i>Modern Lens Antennas for Communications Engineering</i> explores many types of lens antennas in great detail, from polyrods and low sidelobe antennas to the spherical lens and hemispherical lens-reflector scanning antennas. In addition to design principles and computational techniques, readers will find a host of helpful tips on how to fabricate lens antennas in small batches or assessment, choose the right dielectric material, configure measurement campaigns, and tackle practical issues when constructing antennas and measuring their properties.</p> <p>The book provides information on:</p> <ul> <li>Economically coupling a millimeter-wave circuit into a radiating beam whose polarization and shape is tightly controlled</li> <li>Utilizing costly spectrum in cellular networks beamed to the ground from platforms high in the upper atmosphere</li> <li>Tracking two different satellites from a single terminal on a high-speed train</li> </ul> <p><i>Modern Lens Antennas for Communications Engineering</i> is an excellent resource for RF/microwave engineers, designers, and researchers in academia and industry, and anyone wishing to learn how to take full advantage of lens antennas and their many useful and interesting properties.</p>

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    Introduction

    Copyright Year: 2012

    Wiley-IEEE Press eBook Chapters

    This chapter contains sections titled:

  • Lens Antennas: An Overview

  • Feeds for Lens Antennas

  • Luneburg and Spherical Lenses

  • Quasi Optics and Lens Antennas

  • Lens Antenna Design

  • Metamaterial Lens

  • Planar Lens or Phase-Shifting Surface

  • Applications

  • Antenna Measurements

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    Review of Electromagnetic Waves

    Modern Lens Antennas for Communications Engineering
    Copyright Year: 2012

    Wiley-IEEE Press eBook Chapters

    This chapter contains sections titled:

  • Maxwell's Equations

  • Antenna Parameters

  • Polarization

  • Wave Propagation in Metamaterials

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    Polyrod Antennas

    Modern Lens Antennas for Communications Engineering
    Copyright Year: 2012

    Wiley-IEEE Press eBook Chapters

    This chapter contains sections titled:

  • Polyrods as Resonators

  • The Polyrod as a Radiator

  • Patch-Fed Circular Polyrod

  • Array of Polyrods

  • Multibeam Polyrod Array

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    Millimeter Wave Lens Antennas

    Modern Lens Antennas for Communications Engineering
    Copyright Year: 2012

    Wiley-IEEE Press eBook Chapters

    This chapter contains sections titled:

  • Millimeter Wave Characteristics

  • Millimeter Wave Substrate Lens for Imaging

  • Millimeter Wave and Submillimeter Wave Lens

  • Analysis of Millimeter Wave Spherical Lens

  • Waveguide-Fed Millimeter Wave Integrated Lens

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    Lens Antennas for Communications from High-Altitude Platforms

    Modern Lens Antennas for Communications Engineering
    Copyright Year: 2012

    Wiley-IEEE Press eBook Chapters

    This chapter contains sections titled:

  • Introduction

  • The High-Altitude Platform Concept

  • Advantages of Lenses over Reflector Antennas

  • Development of a Shaped Beam Low-Sidelobe Lens Antenna with Asymmetric Pattern

  • Lens Antenna Payload Model

  • Multifeed Lens

  • Multiple Beam Spherical Lens Antennas for HAP Payload

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    Spherical Lens Antennas

    Modern Lens Antennas for Communications Engineering
    Copyright Year: 2012

    Wiley-IEEE Press eBook Chapters

    This chapter contains sections titled:

  • Introduction

  • Spherical Lens Overview

  • Analytical Methods

  • Spherical Lens Materials and Fabrication Methods

  • Revisiting the Constant-Index Lens

  • Cross-Polarization Properties of Spherical Lenses

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    Hemispherical Lens-Reflector Scanning Antennas

    Modern Lens Antennas for Communications Engineering
    Copyright Year: 2012

    Wiley-IEEE Press eBook Chapters

    This chapter contains sections titled:

  • Introduction

  • Candidate Scanning Antenna Technologies

  • Spherical and Hemispherical Lens Antenna

  • Hemispherical Lens Prototype

  • Evolution of a Two-Layer Stepped-Index Polymer Lens

  • A Hemispherical Lens-Reflector Antenna for Satellite Communications

  • A Low-Index Lens Reflector for Aircraft Communications (Contribution by D. Gray)

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    About the Authors

    Modern Lens Antennas for Communications Engineering
    Copyright Year: 2012

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    Index

    Modern Lens Antennas for Communications Engineering
    Copyright Year: 2012

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