A compact broadband ridged-square-waveguide radiating element for phased array antennas in synthetic aperture radar applications
Abstract
For broadband synthetic aperture radar applications, a compact broadband horn array antenna is investigated.Ridged waveguide and square horn are used for broadband operating, and the size of the array element is much smaller than the traditional horn. The measured operating frequencies covered all X-band, more than 40% at centered frequency about 10 GHz. A 4 × 8 array was tested, and the measured results showed that the scan angle can be more than 15°, and the side lobe levels are −12 dB. Details of the antenna design and experimental results are presented. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:829–833, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26634
