Antenna Mutual Coupling Analysis and Simulation Based on High-frequency Asymptotic Algorithm on Space Tracking Ship

To arrange the antennas onboard space tracking ship properly to avoid mutual interference, especially between those operating in the same frequency band, mutual coupling needs to be calculated. However, the complexity of conventional electromagnetic algorithm is intolerable and can't solve the problem efficiently. In this paper, a high-frequency asymptotic algorithm is adopted, party with time-domain finite element integration algorithm, to analyze the coupling between marine radar and tracking radar, both operating in S-band. Simulation result and test result show that, for large-scale antennas, the method proposed by us improves the efficiency significantly and computation error is less than 5 dB, which make it to be very applicable in engineering.