A grating lobe suppression method is applied to a phased array antenna system having antenna array elements that are grouped in regularly spaced subarrays each having a plurality of regularly spaced antenna elements within the subarrays for suppressing intermodulation grating lobes generated within a field of view of the antenna system when amplifying two modulated carrier communication signals at respective two different frequencies.
Keywords: signal suppression
International Class: H01Q3/36, H01Q5/00, H01Q21/22, H01Q25/00, H01Q3/02, H01Q3/22