Print Email Facebook Twitter Compact Substrate Integrated Waveguide Quasi-Endfire Antenna for CubeSat Integration Title Compact Substrate Integrated Waveguide Quasi-Endfire Antenna for CubeSat Integration Author Alrushud, K.M. Gomez-Guillamon Buendia, V.A. Podilchak, S.K. Publication year 2021 Abstract A planar quasi-endfire surface-wave antenna (SWA) using substrate integrated waveguide (SIW) technology for integration with CubeSats and other small satellites is proposed in this letter. This antenna can be attached to the body of the satellite, resulting in a compact and low-cost design. A quasi-endfire beam pattern is achieved by the radiation of the fundamental TM0 surface wave mode at the edge of a grounded dielectric slab (GDS). This mode is excited by a leaky SIW T-junction creating a uniform wavefront that propagates through a truncated parallel-plate waveguide (PPW). A matching section based on an array of subwavelength patches is also added at the interface between the PPW and the GDS for reduced reflections and improved antenna radiation performance. The measured prototype demonstrated realized gain values of 13.3 dBi at 18.6 GHz for a competitive structure size of 5 λ0 × 4.8 λ0 and with a simulated total radiation efficiency of 93.4%, providing high data rate capabilities for downlink communications. This antenna could be suitable for CubeSat or other small satellite commercial missions, for example, Earth and planetary observations or intersatellite links Subject CubeSatsendfireleaky waves (LW)substrate integrated waveguide (SIW)surface waves (SW)surface-wave antenna (SWA)Antenna arraysDirectional patterns (antenna)Microwave antennasSatellite antennasSatellite linksSlot antennasSmall satellitesSurface wavesTraveling wave antennasDownlink communicationsInter-satellite linkParallel plate waveguideRadiation efficiencyRadiation performanceSubstrate integrated waveguide technologiesSurface wave modesSurface-wave antennasSubstrate integrated waveguides To reference this document use: http://resolver.tudelft.nl/uuid:9f0e7161-790f-4932-8c03-78b44d8003b7 TNO identifier 967704 Publisher Institute of Electrical and Electronics Engineers Inc. ISSN 1536-1225 Source IEEE Antennas and Wireless Propagation Letters, 20 (20), 2120-2124 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.