TY - JOUR
T1 - Fundamental study on novel loop-line antennas radiating a circularly polarized wave
AU - Hirose, Kazuhide
AU - Shibasaki, Tetsuya
AU - Nakano, Hisamatsu
PY - 2012
Y1 - 2012
N2 - We propose two types of microstrip-line antennas, designated as connected and penetrated loop-line antennas. Each antenna is composed of loops and straight lines and analyzed using the method of moments. It is found that a circularly polarized beam with an axial ratio of 0.1 dB can be formed by shifting the straight lines with respect to the loop centers. Further analysis reveals that local radiation from the straight lines of the penetrated loop-line antenna is remarkably small (-17 dB) in comparison to that (-7 dB) of the connected loop-line antenna.
AB - We propose two types of microstrip-line antennas, designated as connected and penetrated loop-line antennas. Each antenna is composed of loops and straight lines and analyzed using the method of moments. It is found that a circularly polarized beam with an axial ratio of 0.1 dB can be formed by shifting the straight lines with respect to the loop centers. Further analysis reveals that local radiation from the straight lines of the penetrated loop-line antenna is remarkably small (-17 dB) in comparison to that (-7 dB) of the connected loop-line antenna.
KW - Circular polarization
KW - Loop antenna arrays
KW - Microstrip-line antennas
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U2 - 10.1109/LAWP.2012.2196965
DO - 10.1109/LAWP.2012.2196965
M3 - Article
AN - SCOPUS:84861130063
SN - 1536-1225
VL - 11
SP - 476
EP - 479
JO - IEEE Antennas and Wireless Propagation Letters
JF - IEEE Antennas and Wireless Propagation Letters
M1 - 6193118
ER -