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A Ku-Band, Low Sidelobe Waveguide Array Employing Radiating T Junctions

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The design of a 16-element waveguide array employing radiating T-junctions that operates in the Ku band is described.

Amplitude weighting results in low elevation sidelobe levels, while impedance matching provides a satisfactory VSWR, that are both achieved over a wide bandwidth (15.7-17.2 GHz).

Simulation and measurement results, that agree very well, are presented.

The design forms part of a 16 x 40 element waveguide array that achieves high gain and narrow beamwidths for use in an electronic-scanning radar system.

M. C. Walden, “A Ku-Band, Low-Sidelobe Waveguide Array Employing Radiating T-Junctions”, IEEE International Antennas and Propagation Symposium, Orlando, FA, USA, 7–13 July 2013.

doi:10.1109/APS.2013.6710684

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