An　X-band　dual-polarized　phased　array　with　in-band　co-polarization　low　scattering　property　is　presented.　Unlike　previous　works,　the　relationship　between　mutual　coupling　and　in-band　scattering　is　investigated,　identifying　that　the　coupling　structure　is　one　of　the　primary　contributors　to　residual　mode　scattering.　Taking　advantage　of　this　feature,　the　bridge　circuit　topology　is　employed　to　analyze　the　effects　of　unbalanced　adjustments　for　the　coupling　structure,　revealing　that　these　adjustments　will　lead　to　polarization　conversion　of　the　scattered　field　from　co-polarized　to　cross-polarized　form.　Subsequently,　a　PIN　diode-based　central　branch　with　inter-polarization　coupling　current　control　ability　is　introduced　for　the　real-time　control　of　the　trade-off　between　scattering　and　radiation　performance.　As　a　result,　a　dual-polarized　element　and　its　mirror　element　co-designed　with　controllable　scattering　polarization　conversion　ability　are　proposed,　enabling　residual　mode　scattering　cancellation　when　arrayed　together.　As　a　demonstration,　a　prototype　is　fabricated　and　measured,　which　is　capable　of　operating　from　7.6　to　12　GHz　with　a　radiation　beam　scanning　up　to　±60°　in　E/H-plane.　The　achieved　in-band　co-polarized　monostatic　RCS　reduction　averages　16.5　dB　and　21.4　dB　for　H/V-polarized　incidence　respectively.　The　measured　results　align　well　with　the　simulation　results,　thus　confirming　the　good　performance　of　the　proposed　array.　　©　1963-2012　IEEE.