TY - JOUR
T1 - Double periodic composite right/left handed transmission line and its applications to compact leaky-wave antennas
AU - Jin, Cheng
AU - Alphones, Arokiaswami
AU - Tsutsumi, Makoto
PY - 2011/10
Y1 - 2011/10
N2 - A double periodic composite right/left handed transmission line (DP-CRLH TL) is proposed and analyzed based on transmission line theory. Besides the composite right/left handed property, a new leaky-wave radiation is observed at a lower frequency with narrow bandwidth. Dispersion characteristics of the structure are obtained and the cutoff frequencies are investigated by changing the ratio of inductances (L1/L2) or capacitances (C 1/C2). Experiments are performed using microstrip lines with double periodically loaded shunt shorted-stub inductors and series interdigital capacitors. Frequency response, dispersion behavior and radiation characteristics are measured from the prototype structure and they display the expected novel forward leaky-wave radiation in the direction of θr = +3° and gain of 4.12 dBi at 1.6 GHz, the left-handed backward radiation in the direction of θr = -19° and gain of 8.62 dBi at 3.3 GHz, and the conventional right-handed forward radiation in the direction of θr = +12° and gain of 8.78 dBi at 3.9 GHz.
AB - A double periodic composite right/left handed transmission line (DP-CRLH TL) is proposed and analyzed based on transmission line theory. Besides the composite right/left handed property, a new leaky-wave radiation is observed at a lower frequency with narrow bandwidth. Dispersion characteristics of the structure are obtained and the cutoff frequencies are investigated by changing the ratio of inductances (L1/L2) or capacitances (C 1/C2). Experiments are performed using microstrip lines with double periodically loaded shunt shorted-stub inductors and series interdigital capacitors. Frequency response, dispersion behavior and radiation characteristics are measured from the prototype structure and they display the expected novel forward leaky-wave radiation in the direction of θr = +3° and gain of 4.12 dBi at 1.6 GHz, the left-handed backward radiation in the direction of θr = -19° and gain of 8.62 dBi at 3.3 GHz, and the conventional right-handed forward radiation in the direction of θr = +12° and gain of 8.78 dBi at 3.9 GHz.
KW - Double periodic composite right/left handed transmission line (DP-CRLH TL)
KW - left-handed
KW - microstrip line
KW - triple band leaky-wave antenna
UR - https://www.scopus.com/pages/publications/80053633085
U2 - 10.1109/TAP.2011.2163752
DO - 10.1109/TAP.2011.2163752
M3 - Article
AN - SCOPUS:80053633085
SN - 0018-926X
VL - 59
SP - 3679
EP - 3686
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
IS - 10
M1 - 5976390
ER -