Publication

Abstract : A Multiple Input Multiple Output (MIMO) antenna system with beam steering capabilities that operates at 26 GHz mmWave frequency has been proposed here for space-based applications like inter-satellite links and deep-space communication systems to maintain continuous, high-gain connectivity with moving satellites, ensuring reliable and low-latency data transmission. Some of the main challenges faced in space-based communication are high free-space path loss, signal attenuation at high frequencies due to atmospheric absorption, and the need for precise beam steering to maintain stable links with moving satellites in LEO and GEO networks. To mitigate this issue, we implement MIMO Array Antennas operating at mmWave frequency with beam-steering capabilities by enabling phase changes, which aids the antenna in directing the energy towards satellites in LEO and GEO orbits dynamically, enhancing coverage and signal strength. By leveraging technology like MIMO (Multiple Input Multiple Output), this antenna system is intended to achieve increased data rates, reduced interference and improved spectral efficiency, making them important for tackling the limitations in space communication networks, ensuring the low-latency and robust connectivity for satellite-based applications. The antenna system with high isolation produced 4° shift in the main lobe direction when 90° phase shift was introduced between the two ports. It also demonstrates an Envelope Correlation Coefficient (ECC) value of 3.04 × 10−5, high directivity gain value of 9.99 dB and realized gain of 12.8 dB.