TY - JOUR
T1 - An Active Metamaterial Antenna with MEMS-Modulated Scanning Radiation Beams
AU - Luo, Yong
AU - Kikuta, Kazutaka
AU - Han, Zhengli
AU - Takahashi, Takuya
AU - Hirose, Akira
AU - Toshiyoshi, Hiroshi
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/7
Y1 - 2016/7
N2 - In this letter, for the first time, we report a microelectromechanical system (MEMS)-modulated scanning beam metamaterial antenna based on surface micromachining process. The antenna is implemented by cascading periodical metamaterial modules with a unit length of less than λg/5 to make an electromagnetically homogeneous waveguide, of which the MEMS cantilevers are monolithically integrated in each unit as a radio frequency (RF) switch to modulate the phase constant β, and thereby to realize the scanning beams in the fixed frequency around 8 GHz. Experiments that verified the MEMS-modulated scanning radiation beams are tuned from the backward (around -15°) to the broadside (around 0°) and to the forward (around +15°) directions as the RF-MEMS switches are, respectively, actuated from the states of 0000-0000 (switches in all of the eight units are OFF) to 1010-1010 (switches in the unit of numbers 1, 3, 5, and 7 are ON) and to 1111-1111 (all switches are ON).
AB - In this letter, for the first time, we report a microelectromechanical system (MEMS)-modulated scanning beam metamaterial antenna based on surface micromachining process. The antenna is implemented by cascading periodical metamaterial modules with a unit length of less than λg/5 to make an electromagnetically homogeneous waveguide, of which the MEMS cantilevers are monolithically integrated in each unit as a radio frequency (RF) switch to modulate the phase constant β, and thereby to realize the scanning beams in the fixed frequency around 8 GHz. Experiments that verified the MEMS-modulated scanning radiation beams are tuned from the backward (around -15°) to the broadside (around 0°) and to the forward (around +15°) directions as the RF-MEMS switches are, respectively, actuated from the states of 0000-0000 (switches in all of the eight units are OFF) to 1010-1010 (switches in the unit of numbers 1, 3, 5, and 7 are ON) and to 1111-1111 (all switches are ON).
KW - MEMS-modulated scanning beams
KW - monolithic integration
KW - RF-MEMS
KW - surface micromachining process
KW - tunable metamaterial antenna
UR - http://www.scopus.com/inward/record.url?scp=84976865518&partnerID=8YFLogxK
U2 - 10.1109/LED.2016.2565559
DO - 10.1109/LED.2016.2565559
M3 - Journal article
AN - SCOPUS:84976865518
SN - 0741-3106
VL - 37
SP - 920
EP - 923
JO - IEEE Electron Device Letters
JF - IEEE Electron Device Letters
IS - 7
M1 - 7467430
ER -