Design of satellite-borne low-profile one-dimensional phased scanning slot array antenna
Aiming at the application of satellite-borne phased array radar,a low-profile lightweight one-dimensional phased scanning slot array antenna operating in Ku band is proposed.The antenna is based on radio frequenly-digital-power integration design,and system in package(SiP)chips are used to achieve high-density structural integration.Compared with the traditional phased array antennas based on brick or tile transmit/receive(T/R)modules,the proposed antenna design can effectively reduced the height and weight of the antenna profile.The central working frequency of the antenna is 16 GHz,with a working bandwidth of 600 MHz,which can realize one-dimensional beam scanning.In addition,a self-calibration network is designed,which can be used for real-time detection of the amplitude and phase characteristics of the radio frequency channel in orbit.The measurement results of the prototype show that the scanning angle of the antenna can reach±30°,and the testing result of effective isotropic radiated power(EIRP)and gain-to-noise temperature ratio(G/T)values are consistent with the theoretical calculation values.
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