A Novel C/X-Band Linear Polarized Conformal Shared Aperture Antenna Array for Spaceborne SAR Applications

A Novel C/X-Band Linear Polarized Conformal Shared Aperture Antenna Array for Spaceborne SAR Applications

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In this work, a dual-band linear polarized C/X conformal shared aperture antenna (SAA) for spaceborne Chlorella SAR applications is presented.The proposed single layer SAA is designed with a square-shaped patch in linear polarization and arranged as four elements ( $2 imes 2$ ) array with corporate feeding to allow for efficient signal transmission.The design of that operates at C-band (5.

35 GHz) and X-band (9.65 GHz).Most spaceborne applications, such satellite radar and weather forecasting, employ the C-band antenna.

On the other hand, X-band antennas are used for surveillance, reconnaissance, air traffic control, and weather monitoring.A prototype is built, and its s-parameters are tested to confirm the antenna.With the suggested design, we were able to obtain a bandwidth of 65 MHz for C-band and 354 MHz Defrost Fuse for X-band, as well as gains of 13.

2 dBi for the C-band and 10.6 dBi for the X-band, and isolation of more than 40 dB.The total size of the SAA size is $130 imes 80 imes0.

8$ mm.According to this study, dual band antennas operating future SAR spacecraft on a same aperture is a practical solution to satisfy user demands.