Measurements and Analysis of a Probe-Fed Circularly Polarized Loop Antenna Printed on a Layered Dielectric Sphere

2012 ◽  
Vol 60 (4) ◽  
pp. 2096-2100 ◽  
Author(s):  
M. N. Mohd Yasin ◽  
Salam K. Khamas
Keyword(s):  
Loop Antenna ◽  
Dielectric Sphere ◽  
Circularly Polarized ◽  
Layered Dielectric

scholarly journals Balanced gain for a square metaloop antenna

2019 ◽  
Vol 6 ◽  
pp. 3
Author(s):  
Hisamatsu Nakano ◽  
Ittoku Yoshino ◽  
Tomoki Abe ◽  
Junji Yamauchi
Keyword(s):  
Frequency Response ◽  
Radiation Pattern ◽  
Free Space ◽  
Loop Antenna ◽  
Circularly Polarized ◽  
Left Handed ◽  
The Difference

A square loop antenna implemented using a metamaterial line, referred to as a metaloop, is discussed. The metaloop radiates a counter circularly polarized (CP) broadside beam when the loop circumference equals one guided wavelength. The frequency response of the gain shows two different maximum values: gain G Lmax for a left-handed CP wave at frequency fGLmax and gain GRmax for a right-handed CP wave at frequency fGRmax, where GLmax is smaller than GRmax. In order to increase GLmax, while not affecting the original GRmax as much as possible (i.e. balance the gain), a parasitic natural conducting loop (paraloop), whose circumference is one free-space wavelength at fGLmax, is placed at height Hpara above the metaloop. It is found that the difference in the gains can be reduced by choosing an appropriate Hpara. The radiation pattern at fGLmax is narrowed by the paraloop, while the VSWR is not remarkably affected.

Image theory for a point charge inside a layered dielectric sphere

1994 ◽  
Vol 77 (5) ◽  
pp. 327-335 ◽  
Author(s):  
J. C. -E. Sten ◽  
R. Ilmoniemi
Keyword(s):  
Point Charge ◽  
Image Theory ◽  
Dielectric Sphere ◽  
Layered Dielectric

scholarly journals Circularly polarized open-loop antenna

2003 ◽  
Vol 51 (9) ◽  
pp. 2475-2477 ◽  
Author(s):  
Rong-Lin Li ◽  
V.F. Fusco ◽  
H. Nakano
Keyword(s):  
Open Loop ◽  
Loop Antenna ◽  
Circularly Polarized

scholarly journals A CIRCULARLY POLARIZED QUASI-LOOP ANTENNA

2008 ◽  
Vol 84 ◽  
pp. 333-348 ◽  
Author(s):  
Chien-Jen Wang ◽  
Chia-Hsien Lin
Keyword(s):  
Loop Antenna ◽  
Circularly Polarized
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