RT Journal Article
T1 Array of stacked leaky-wave antennas in groove gap waveguide technology
A1 Memeletzoglou, Nafsika
A1 Rajo Iglesias, Eva
AB The design of an array of stacked leaky-wave antennas in groove gap waveguide technology is presented in this work. The proposed array is formed by simply stacking a number of leaky-wave antennas one on top of the other and feeding all of them with uniform amplitude and phase. The inter-element distance is studied in order to avoid grating lobes and to maximize the directivity. A feeding network based on vertical coupling is designed, where the input port feeds the bottom element, and then the energy is equally coupled to the other elements. To obtain maximum directivity the phase is corrected at each element separately. The central frequency of the proposed design is 28 GHz. With this technique of stacking the elements a pencil beam is achieved, i.e. the radiated energy is focalized in the two main planes. The designed array with four elements achieves an enhancement of + 5 dB, reaching 24.5 dBi of directivity in comparison to 19.6 dBi of directivity of the single leaky-wave antenna made in this technology. A prototype is manufactured and measured and its results are presented and compared with the simulations.
PB Springer Science and Business Media LLC
SN 2045-2322
YR 2021
FD 2021-01-26
LK https://hdl.handle.net/10016/34686
UL https://hdl.handle.net/10016/34686
LA eng
NO This work has been partly funded by the Spanish Government through projects TEC2016-79700-C2-2-R andPID2019-107688RB-C21.
DS e-Archivo
RD 1 sept. 2024