Year-end Sale % OFF 
Abstract
A dual band-notched reconfigurable dielectric resonator antenna (DRA) is proposed in this paper. A rectangular dielectric resonator excited by stepped offset microstrip feedline generates multiple resonant modes for wideband performance. Moreover, the typical stepped impedance feedline and partial ground plane with one rectangular notch are adopted for contributing for better impedance matching. On this basis, a five-line coupler resonator (FLCR) composed by inverted U-shaped and 山-shaped structures is introduced as a bandstop filter in the microstrip feedline, and dual rejected bands are created. Tunable notched frequencies are achieved by the varactor between these two structures. The proposed antenna size is 24 × 28 × 5.637 mm3. For the presented work, both simulated and measured results for the proposed tunable antenna ranging from 5.3 to 5.84 GHz and from 8.74 to 8.98 GHz within the wide bandwidth of 6.06 GHz are presented, demonstrating the accuracy of this design. There capabilities make the proposed antenna applicable for wideband systems with the requirement of avoiding interferences.
Highlights
Dielectric resonator antenna (DRA) has been an active research area for the last three decades due to its excellent characteristics such as compact size, light weigh, low dissipation loss, high degree of design flexibility, and ease of excitation, since it was originally proposed in 1983 [1]
DRA provides a promising solution for UWB antenna [4,5,6]
Antenna I, a rectangular DRA excited by offset uniform impedance microstrip, can generate designed (Figure 2)
Summary
Dielectric resonator antenna (DRA) has been an active research area for the last three decades due to its excellent characteristics such as compact size, light weigh, low dissipation loss, high degree of design flexibility, and ease of excitation, since it was originally proposed in 1983 [1]. Ultrawideband (UWB) systems are of great interest due to their remarkable advantages, such as simple hardware configuration, high-speed data rate, low power consumption, and high-precision ranging. There are some challenges including high radiation efficiency to design UWB antennas. Many relatively narrowband services occupy frequencies in the UWB range, so it is necessary to develop techniques to introduce notched bands for rejecting the interferences [7,8]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
