DocumentCode :
1431802
Title :
Compact Expressions for Efficiency and Bandwidth of Patch Antennas Over Lossy Magneto-Dielectric Materials
Author :
Niamien, Constant ; Collardey, Sylvain ; Sharaiha, Ala ; Mahdjoubi, K.
Author_Institution :
Antennas Group, Eur. Univ. of Brittany (UEB), Rennes, France
Volume :
10
fYear :
2011
fDate :
7/3/1905 12:00:00 AM
Firstpage :
63
Lastpage :
66
Abstract :
Closed-form formulas for calculating the radiation efficiency and bandwidth of patch antennas over lossy magneto-dielectric materials are proposed by using the cavity model. These expressions agree well with simulations. It is well known that the bandwidth of microstrip antennas is enhanced when the dielectric substrate is replaced by a magnetic one. Here, we confirm more generally that not only the bandwidth, but also the radiation efficiency, can be improved when the permeability (μr) is greater than the permittivity (εr).
Keywords :
antenna radiation patterns; dielectric materials; magnetic materials; microstrip antennas; permeability; permittivity; cavity model; closed-form formulas; dielectric substrate; lossy magneto-dielectric materials; microstrip antennas; patch antennas; permeability; permittivity; radiation efficiency; Bandwidth; Dielectric losses; Magnetic resonance imaging; Microstrip antennas; Substrates; Antenna miniaturization; cavity model; losses; magneto-dielectrics; radiation efficiency;
fLanguage :
English
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
Publisher :
ieee
ISSN :
1536-1225
Type :
jour
DOI :
10.1109/LAWP.2011.2107493
Filename :
5696732
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=1431802
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