Crossover level improvement between beams in a geodesic lens antenna based on a generalized Luneburg lens Show others and affiliations
2022 (English) In: 2022 16th European Conference on Antennas and Propagation (EuCAP), Institute of Electrical and Electronics Engineers (IEEE), 2022Conference paper, Published paper (Refereed)
Abstract [en]
In this paper, we propose a geodesic generalized Luneburg lens operating in the 60-GHz band, from 57 to 67 GHz, designed with the goal to improve the crossover level between beams with respect to previously reported fully metallic Luneburg lenses, while providing highly directive beams and wide scanning coverage. We have combined the use of a generalized Luneburg lens and the design of a compact feeding type based on ridge waveguide in order to achieve an optimum crossover level between beams keeping in mind manufacturing simplicity. The numerical evaluation of the final integrated lens design including 21 ridge waveguide feeding ports shows a vertical bar S-11 vertical bar parameter below -13.6 dB over the frequency band of interest, a scanning range of +/- 52 degrees, a realized gain higher than 19 dBi over the whole operating bandwidth, and a crossover level value between -3.5 dB and -4.2 dB from the lowest to the highest frequency of operation.
Place, publisher, year, edition, pages Institute of Electrical and Electronics Engineers (IEEE), 2022.
Series
Proceedings of the European Conference on Antennas and Propagation, ISSN 2164-3342
Keywords [en]
beam crossover, geodesic lens, Luneburg lens, millimeter-waves, ridge waveguide, wide scanning coverage
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers URN: urn:nbn:se:kth:diva-316291 ISI: 000815113902190 Scopus ID: 2-s2.0-85130589369 OAI: oai:DiVA.org:kth-316291 DiVA, id: diva2:1686987
Conference 16th European Conference on Antennas and Propagation (EuCAP), MAR 27-APR 01, 2022, Madrid, Spain
Note QC 20220812
Part of proceedings: ISBN 978-88-31299-04-6
2022-08-122022-08-122022-08-12 Bibliographically approved