%0 Conference Proceedings %T Matching and gain enhancement of leaky-wave dielectric horn antenna %+ Ecole Polytechnique Fédérale de Lausanne (EPFL) %+ Institut d'Électronique et des Technologies du numéRique (IETR) %A Lei, W. %A García-Vigueras, M. %A Mosig, J.R. %< avec comité de lecture %B 10th European Conference on Antennas and Propagation, EuCAP 2016 %C Davos, Switzerland %I Institute of Electrical and Electronics Engineers Inc. %P 7481749 %8 2016-04-10 %D 2016 %R 10.1109/EuCAP.2016.7481749 %K Antenna lobes %K Directional patterns (antenna) %K Electric impedance %K Electromagnetic waves %K Fuel tanks %K Microwave antennas %K Traveling wave antennas %K Center frequency %K End fire %K Front to back ratio %K Gain enhancement %K Impedance bandwidths %K Leaky waves %K Parallel strips %K Radiation performance %K Horn antennas %Z Computer Science [cs]/Networking and Internet Architecture [cs.NI] %Z Engineering Sciences [physics]/ElectronicsConference papers %X By flaring a dielectric waveguide in the H-plane, an H-plane dielectric horn is formed, which could be directly excited by an SIW feed. However, matching and radiation performances are poor due to the thinness of the substrate. To improve these performances, some periodic parallel strips are printed both on the top and bottom planes of the dielectric horn. These strips guide and leak the electromagnetic waves gradually along the horn, finally enhancing the end-fire radiation both in H-plane and E-plane. Moreover, they increase the impedance bandwidth up to 40% in Ka-band, and improve the realized gain by more than 2 dB. Indeed, a gain of 14.9 dBi is achieved at the center frequency, with a front-to-back ratio of 33.8 dB, and a side-lobe level of -22.9 dB in the H-plane. With these quite impressive performances, the proposed leaky-wave dielectric horn antenna is very compact, low cost, and easily integrated. © 2016 European Association of Antennas and Propagation. %G English %L hal-01368139 %U https://hal-univ-rennes1.archives-ouvertes.fr/hal-01368139 %~ UNIV-NANTES %~ UNIV-RENNES1 %~ CNRS %~ INSA-RENNES %~ IETR %~ IETR-INSA %~ STATS-UR1 %~ CENTRALESUPELEC %~ UR1-HAL %~ UR1-MATH-STIC %~ UR1-UFR-ISTIC %~ IETR-BEAMS %~ IETR-ADH %~ TEST-UNIV-RENNES %~ TEST-UR-CSS %~ UNIV-RENNES %~ INSA-GROUPE %~ UR1-MATH-NUM %~ IETR-SURFWAVE %~ NANTES-UNIVERSITE %~ UNIV-NANTES-AV2022