Lecture Notes in Electrical Engineering

By: Igor V. Minin, Oleg V. Minin

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Hardcover | 6 June 2008

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220 Pages

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Antennas represent a critical technology in any of these wireless systems. Not only do they directly affect the received power of the system, they are also typically the largest and most visible part. Recently, the need for low-cost, low-profile, and lightweight antenna in the frequency range of the microwave/millimeter wave/THz band has regained momentum.

"Basic Principles of Fresnel Antenna Arrays" provides us a with the basics of the various Fresnel Antenna approaches, in order to achieve low-cost, low-profile, and lightweight antenna in the microwave/millimeter wave band. A potential solution of the antenna problem lies in using lens technology in an array. The Fresnel zone plate lens (FZPL) antenna is in particular an interesting candidate for the array element. The limiting focusing properties of FZPL including subwave length focus are described in detail. The book further presents a novel hexagonal FZPL antenna which can be more effectively packed in an array due to its shape.

Before considering the hexagonal FZPL antenna in an array, the authors investigate two ideas, described as methods to potentially improve the radiation characteristics. The first idea is to change the reference phase of the Fresnel zone radii - a novel free parameter in the usual design of zone plate's lenses and antennas. To further improve the radiation characteristics of the hexagonal FZPL antenna, a technique involving Fresnel zone rotation is investigated.

The book is of interest for designers of optical systems because, taking scaling effects into account, the characteristics of diffractive quasioptical elements are valid for diffractive focusing elements of integrated optics.

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You Can Find This Book In

Non-Fiction Science Physics Optical Physics Engineering & Technology Electronics & Communications Engineering Electronics Engineering Microwave Technology Energy Technology & Engineering Electrical Engineering Communications Engineering & Telecommunications Radio Technology

Other Technologies & Applied Sciences Applied Optics Laser Technology & Holography

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Published: 28th October 2010

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The Brief Elementary Basics of Antenna Arrays	p. 1
Some Basic Antenna Parameters Definitions	p. 1
Antenna Arrays, Radiation Pattern, and Array Factor	p. 4
Brief Review of FZP Antennas	p. 13
Reference Phase Concept	p. 37
Main Principles of Real-Time Reconfigurable Diffractive Antenna Design	p. 51
Lens Candidates to Antenna Array	p. 71
Circular Fresnel Zone Plate Antennas with Varying Reference Phase	p. 71
Square FZP	p. 81
Beam pattern with Chiral Symmetry	p. 111
FZP Lens Array	p. 129
The Resolution Limit of FZPL With Small Values of F/D and Sub-wavelength Focus	p. 129
Single-Zone FZPA Case	p. 138
Small 2 x 2 Single-Zone HFZP Array	p. 146
Arrays of Perforated Dielectric Fresnel Lenses	p. 152
Simple Circular Zone Determination in Overlapping Case	p. 168
Some Fields of Lens Array Applications	p. 171
Array of Small Lenses	p. 171
Lens Array Based on Luneberg Lenses	p. 173
Array of Luneberg Lenses Protrudes Outside of the Fuselage	p. 174
Fly's-Eye Imaging Concept	p. 175
Waveguide Lens Array Technology	p. 176
Active Transmit Lens Array Antenna Concept	p. 179
Layered FZPL Antenna Array	p. 182
Application of a Short-Focus FZP Array to the Hartmann-Shack Sensor	p. 183
Exoplanet Detection Array with Unlimited Aperture	p. 186
Applications of FZP Array with Reference Phase	p. 188
Suggestions for Future Work	p. 192
Table of Contents provided by Blackwell. All Rights Reserved.

Lecture Notes in Electrical Engineering

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