A reconfigurable dual-passband to single-passband filter based on highly miniaturized ring resonators is presented. The filter is designed for 448 MHz for the first band and 668 MHz for the second band as the central passband frequencies and simulations are used for enhancing the design. The filter is implemented using microstrip technology on a RO3010 substrate with thickness of 1.28 mm. The lower passband can be eliminated by just changing the location of a short. Measurements for the optional eliminated band are in good agreement with the expected values. The transmission is −3 dB at the central frequency for dual-passband configuration and −26 dB for single-passband configuration.
A filter which its bandpass frequency can be reconfigured is presented. Its central frequency ranges from 316 MHz to 392 MHz (22% tuning). The filter is based on a miniaturized compose right/left-handed ring resonator. The reconfiguration of its resonant frequency is implemented by shifting a short location, thus changing its effective lefthanded inductance. This is opposed to the conventional capacitance change of other reconfigurable filters. The relation short location versus central frequency is quasi-linear. The short location could be controlled by a servomotor configuration.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
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.