TY - JOUR
T1 - Design of metamaterial leaky-wave antenna with continuous beam scanning capability for sensing applications
AU - Zhang, Hao
AU - Liu, Hongtao
AU - Xu, Shugong
AU - Yang, Guangli
AU - Luo, Yong
N1 - Publisher Copyright:
© 2022 Wiley Periodicals LLC.
PY - 2022/9
Y1 - 2022/9
N2 - We report the fundamental design guideline for a metamaterial (MTM) leaky-wave antenna with continuous tuning capability of radiation directions without causing band gaps. The proposed design is the composite right–left hand (CRLH) type MTM, and each cell has a slot that could be in the open- or close-state with indicating as 0 and 1 states. With the MTM-based design, a leaky-wave antenna consisting of eight MTM units can be controlled by states of periodical MTM units such as coding states 0000–0000, 1010–1010, …, 1111–1111, rather than by frequency tuning, thereby realizing continuously beam scanning without any stopband from −30° to +30° in the fixed frequencies from 9 to 9.2 GHz. The proof-of-concept level tuning capability is confirmed by experiments using the closed- or open-patches that emulate the electrical short- or open-state of individual switch. The measured results show that the MTM-based leaky-wave antenna can obtain state-dependent and continuous beam scanning at the fixed frequencies of 9–9.2 GHz. It can be applied for radar sensing with requiring continuous and state-dependent beam scanning properties.
AB - We report the fundamental design guideline for a metamaterial (MTM) leaky-wave antenna with continuous tuning capability of radiation directions without causing band gaps. The proposed design is the composite right–left hand (CRLH) type MTM, and each cell has a slot that could be in the open- or close-state with indicating as 0 and 1 states. With the MTM-based design, a leaky-wave antenna consisting of eight MTM units can be controlled by states of periodical MTM units such as coding states 0000–0000, 1010–1010, …, 1111–1111, rather than by frequency tuning, thereby realizing continuously beam scanning without any stopband from −30° to +30° in the fixed frequencies from 9 to 9.2 GHz. The proof-of-concept level tuning capability is confirmed by experiments using the closed- or open-patches that emulate the electrical short- or open-state of individual switch. The measured results show that the MTM-based leaky-wave antenna can obtain state-dependent and continuous beam scanning at the fixed frequencies of 9–9.2 GHz. It can be applied for radar sensing with requiring continuous and state-dependent beam scanning properties.
KW - band gap
KW - leaky-wave antenna
KW - status-dependent beam scanning
KW - tunable metamaterial.
UR - http://www.scopus.com/inward/record.url?scp=85130687073&partnerID=8YFLogxK
U2 - 10.1002/mmce.23269
DO - 10.1002/mmce.23269
M3 - Article
AN - SCOPUS:85130687073
SN - 1096-4290
VL - 32
JO - International Journal of RF and Microwave Computer-Aided Engineering
JF - International Journal of RF and Microwave Computer-Aided Engineering
IS - 9
M1 - e23269
ER -