Reduced Surface-\ ve Twin Arc-Slot Antennas on Electrically Thick Dielectric SubstratesPOMPES PAR TRANSITIONS MULTIPLES

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" Reduced Surface-\ ve Twin Arc-Slot Antennas on Electrically Thick Dielectric SubstratesPOMPES PAR TRANSITIONS MULTIPLES "

Document Type	:	Latin Dissertation
Language of Document	:	English
Record Number	:	152525
Doc. No	:	ET24317
Main Entry	:	Michael A. Hickey
Title Proper	:	Reduced Surface-\ ve Twin Arc-Slot Antennas on Electrically Thick Dielectric SubstratesPOMPES PAR TRANSITIONS MULTIPLES
Note	:	This document is digital این مدرک بصورت الکترونیکی می باشد
Abstract	:	In this work, a novel planar twin arc-slot antenna design is introduced which excitesvery little surface-wave power. The twin arc-slot antenna consists of two concentric, sec-ond resonant arc-slots of equal radius printed on an electrically thick dielectric substrate.For a specified substrate, arc-slot length and frequency it is demonstrated that there is acritical arc-slot radius at which the power lost to the dominant TMo surface-wave mode isminimized (through phase cancellation) and the radiation efficiency is maximized- A the-oretical radiation efficiency of 90.535 is obtained for a twin arc-slot antenna at secondresonance on a quarter dielectric wavelength thick substrate with a dielectric const antof E, = 10.2 at a design frequency of 9.239 GHz. The theoretical surface-wave efficiencyis 99.840 indicating that surface-wave suppression is almost complete and almost allof the reduction in radiation efficiency is attributed to back-side radiation loss. For asimple two-port feed network, simulated and experimental radiation pattern data areshown to be in agreement with theory..
Subject	:	Electericl tess
	:	برق
electronic file name	:	TL48523.pdf
Title and statement of responsibility and	:	Reduced Surface-\ ve Twin Arc-Slot Antennas on Electrically Thick Dielectric SubstratesPOMPES PAR TRANSITIONS MULTIPLES [Thesis]