Frequency tunable electromagnetic metamaterial based on mechanical movement method

Yifu Wang; Xiaochun Dong; Guishan Yuan; Qiling Deng; Chunlei Du

doi:10.1117/12.869484

5 November 2010 Frequency tunable electromagnetic metamaterial based on mechanical movement method

Yifu Wang, Xiaochun Dong, Guishan Yuan, Qiling Deng, Chunlei Du

Proceedings Volume 7849, Optical Design and Testing IV; 784911 (2010) https://doi.org/10.1117/12.869484
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

A frequency tunable electromagnetic metamaterial is proposed based on mechanical movement method. Two rings are etched against each other on two separate substrates and the two substrates can be adjusted to move relatively. Thus, the resonant frequency can be modulated due to the changed coupling capacitance between the rings according to equivalent circuit theory. Simulation results show that the transmissions (S21) can be continuously adjusted, and the retrieved effective parameters based on simulated scattering parameters reveal that the negative permittivity is available and the negative permittivity frequency region can be tuned downward or upward by slipping the rings either along or perpendicular to the gap's directions. By combining frequency modulations in the two directions, resonant frequency can be shifted from 6.2 GHz to 8.7 GHz, which has realized an efficient modulation in a broad frequency range. The proposed tunable metamaterial has potential applications to design dual band, multi-band antennas and frequency reconfigurable antennas.

Citation Download Citation

Yifu Wang, Xiaochun Dong, Guishan Yuan, Qiling Deng, and Chunlei Du "Frequency tunable electromagnetic metamaterial based on mechanical movement method", Proc. SPIE 7849, Optical Design and Testing IV, 784911 (5 November 2010); https://doi.org/10.1117/12.869484

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available