@article{Khalvati:15308,
      recid = {15308},
      author = {Khalvati, Mohammad Reza and Bovey, Dominique},
      title = {Reducing antenna leakage in quasi-monostatic satellite  radar using planar metamaterials},
      publisher = {MDPI},
      journal = {Aerospace},
      address = {Basel, Switzerland. 2024-12},
      number = {ARTICLE},
      pages = {12 p.},
      abstract = {In an autonomous robotic space debris removal mission, an  essential sensor used for navigation is an FMCW radar  designed for close-range relative navigation. To achieve  the required range performance, minimizing RF leakage  between the transmitter (Tx) and receiver (Rx) antennas is  essential for the accurate detection of the range and  velocity of the targeted space debris. Antennas positioned  above the metallic satellite front face are highly  susceptible to RF leakage, primarily caused by surface  current propagation and lateral waves traveling parallel to  the platform. This study presents two lightweight,  single-layer planar metamaterials—a novel compact  electromagnetic bandgap (EBG) and a non-uniform  high-impedance surface (HIS)—optimized to suppress both  surface waves and interact with space waves within the  9.3–9.8 GHz frequency range. These designs address strict  size, weight, and power (SWaP) constraints while ensuring  compatibility with extreme space conditions and resistance  to mechanical shocks. Experimental validation indicates  that a minimum Tx/Rx isolation improvement of 10 dB is  achieved using the HIS, and 20 dB is achieved using the EBG  across the radar’s operational bandwidth (5%).},
      url = {http://arodes.hes-so.ch/record/15308},
      doi = {https://doi.org/10.3390/aerospace11121037},
}