Search the World's Largest Database of Information Science & Technology Terms & Definitions
InfInfoScipedia LogoScipedia
A Free Service of IGI Global Publishing House
Below please find a list of definitions for the term that
you selected from multiple scholarly research resources.

What is Axial Ratio

Chapter 7
Handbook of Research on Recent Developments in Intelligent Communication Application
The ratio between the minor and major axis of the polarization ellipse. For antenna it is defined by the ratio of orthogonal components of electric field.
Published in Chapter:
Performance Evaluation of Different Rectifying Antenna Systems for RF Energy Harvesting: Rectifying Antenna Systems for RF Energy Harvesting
Saswati Ghosh (IIT Kharagpur, India)
Copyright: © 2017 |Pages: 22
DOI: 10.4018/978-1-5225-1785-6.ch007
Abstract
The radio frequency (RF) energy harvesting is found as an attractive alternative to existing energy resources. This chapter deals with the design and performance evaluation of different rectifying antenna circuits for RF energy harvesting. The rectifying antenna i.e. rectenna consists of an antenna to grab the RF energy and rectifier to convert the RF energy to DC power. Different circularly polarized microstrip antennas e.g. shorted square ring slot antenna and crossed monopole antenna with step ground plane are studied. The antennas are combined with voltage doubler circuits with various stages and bridge rectifier. The electromagnetic simulator CST Microwave Studio is used to design and optimization of antenna structures. The rectifier circuits are designed using SPICE software. Later the prototype of the antennas and rectifiers are fabricated and tested in the laboratory environment. The detailed study on the performance of the rectenna circuits are evaluated in terms of conversion efficiency.
Full Text Chapter Download: US $37.50 Add to Cart
eContent Pro Discount Banner
InfoSci OnDemandECP Editorial ServicesAGOSR