Abstract
This work proposes a hemisphere dielectric lens aiming at high directivity with a narrow beam and low side lobe level (SLL). The proposed lens is constructed by several dielectric sections with different permittivities, providing a wave transformation from a spherical wave to a plane wave. For achieving an easy and low-cost fabrication, liquid crystal display (LCD) printing is utilized to fabricate the entire lens. To modify permittivities of a commercial printable dielectric, air and Al2O3 fine powder are added. The lens is designed at 24 GHz and fed by a WR-42 waveguide excitation. The size of the entire lens is 2.66 λ0 × 3.02 λ0× 3.02 λ0. Simulated results show that at 24 GHz, the proposed lens exhibits a high directivity of 21.8 dBi with 12.2° and 16.3° half-power beamwidths (HPBWs) in E- and H-plane, respectively. It also provides a wide bandwidth of 41.7%, from 20 GHz to 30 GHz. Keywords— dielectric lens antennas; modified permittivity; radiation pattern; wideband antennas
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.
