TY  - GEN
AB  - 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%).
AD  - School of Engineering and Management Vaud, HES-SO University of Applied Sciences and Arts Western Switzerland
AD  - School of Engineering and Management Vaud, HES-SO University of Applied Sciences and Arts Western Switzerland
AU  - Khalvati, Mohammad Reza
AU  - Bovey, Dominique
CY  - Basel, Switzerland
DA  - 2024-12
DO  - 10.3390/aerospace11121037
DO  - DOI
EP  - 1037
ID  - 15308
JF  - Aerospace
KW  - antenna decoupling
KW  - planar metamaterials
KW  - antenna isolation
KW  - lateral wave suppression
KW  - electromagnetic bandgap
KW  - high-impedance surface
KW  - autonomous relative navigation
L1  - https://arodes.hes-so.ch/record/15308/files/Bovey_2024_reducing_antenna_leakage.pdf
L2  - https://arodes.hes-so.ch/record/15308/files/Bovey_2024_reducing_antenna_leakage.pdf
L4  - https://arodes.hes-so.ch/record/15308/files/Bovey_2024_reducing_antenna_leakage.pdf
LA  - eng
LK  - https://arodes.hes-so.ch/record/15308/files/Bovey_2024_reducing_antenna_leakage.pdf
N2  - 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%).
PB  - MDPI
PP  - Basel, Switzerland
PY  - 2024-12
SN  - 2226-4310
SP  - 1037
T1  - Reducing antenna leakage in quasi-monostatic satellite radar using planar metamaterials
TI  - Reducing antenna leakage in quasi-monostatic satellite radar using planar metamaterials
UR  - https://arodes.hes-so.ch/record/15308/files/Bovey_2024_reducing_antenna_leakage.pdf
VL  - 2024, 11
Y1  - 2024-12
ER  -