Title :
Switchable Composite Right/Left-Handed (S-CRLH) Transmission Line Using MEMS Switches
Author :
Jang, Taehee ; Hwang, Sung-Hyun ; Bang, Yong-Seung ; Kim, Jong-Man ; Kim, Yong-Kweon ; Baek, Chang-Wook ; Lim, Sungjoon
Author_Institution :
Sch. of Electr. & Electron. Eng., Chung-Ang Univ., Seoul, South Korea
Abstract :
This letter presents a novel switchable composite right/left-handed (S-CRLH) metamaterial transmission line (TL) using MEMS switches. The proposed TL is based on a general CRLH TL with switchable capacitors and switchable shunt inductive stubs. The LH mode of the S-CRLH TL ranges from 7.5 GHz to 10.4 GHz. In these frequencies, the S-CRLH TL is able to switch from a negative phase response (phase lag) to a positive phase response (phase lead), or vice versa. This phase modulation can be obtained through a voltage, due to the use of MEMS switches. The size of the fabricated S-CRLH TL, including bias networks, is 4941 mum times 2076 mum and is compact thanks to the LH mode.
Keywords :
composite materials; high-frequency transmission lines; metamaterials; microswitches; microwave switches; phase modulation; MEMS switches; S-CRLH metamaterial transmission line; frequency 7.5 GHz to 10.4 GHz; phase modulation; switchable capacitors; switchable composite right/left-handed transmission line; switchable shunt inductive stubs; Composite right/left handed (CRLH); RF microelectromechanical systems (MEMS); metamaterials; tunable;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2009.2033513
