7 Result(s)
within
Chapter
Stephen K. Barton
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Chapter
Zonal Reflectors
In chapter 3, it was demonstrated that the efficiency of a Fresnel zoneplate antenna can be effectively improved by using subzone phase correcting techniques, such as the multilayer phase correction technique....
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Chapter
Reflective Array Antenna
In addition to various Fresnel zoneplate antennas, there is another type of electrically large antennas hased on the principle of phase correction — the passive phase correcting array antenna, which consists o...
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Chapter
Introduction
This book is a research monograph on Fresnel zone antennas. It covers various lens and reflector antennas based on the Fresnel zone concept and phase correction techniques. The material presented is mainly dra...
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Chapter
Single Printed Flat Reflectors
As shown in the preceding chapters, a high efficiency Fresnel zoneplate reflector can be realised by stacking a few layers of dielectric together with metallic zonal patterns in between or by employing a stepp...
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Chapter
Other Fresnel Zone Antennas
In the preceding chapters, theoretical investigations and experiments on a number of Fresnel zone antennas are presented. This chapter is intended to introduce a wider range of Fresnel zone antennas. Section 7...
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Chapter
Offset Fresnel Zoneplate
The most common form of Fresnel zone reflectors and lenses is the circular zoneplate. The design of the simple circular zoneplate is well documented in the open literature, and experiments at various frequenci...
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Chapter
Phase Correcting Fresnel Zoneplates
Although the simple Fresnel zoneplate antenna with alternative reflective and transparent half-wave zones is easy to fabricate, its efficiency is too low for many practical applications. There are two factors ...
