With　the　metallic　yarns　as　the　conductive　structure　unit　material,　the　new　frequency　selective　fabrics　based　on　U　velvet　were　papered　by　velvet　weaving　method　to　explore　the　frequency　response　characteristics　of　flexible　frequency　selective　surface.　By　testing　and　analyzing　transmission　coefficient　of　samples,　influence　factors　of　frequency　response　characteristics　were　studied.　With　the　increase　of　unit　structure　size,　line　spacing,　velvet　height　or　inclination　angle　of　testing,　the　resonant　frequency　shifts　to　low　frequency,　the　density　of　the　conductive　yarns　is　increased,　and　the　resonant　frequency　is　moved　to　the　high　frequency,　with　the　same　unit　bottom　length,　the　resonant　frequency　of　different　U　connections　has　little　change.　The　increasing　of　the　number　of　the　same　U　connecting　leads　to　the　lower　frequency.　When　silver　fiber　is　used　as　the　unit　conductive　material,　the　resonance　peak　and　bandwidth　of　the　sample　are　larger.　And　the　resonant　peak　of　bare　copper　wire　samples　is　sharper　and　steeper.　U　type　velvet　fabric　has　the　stability　performance　of　the　angle　of　incidence,　but　has　a　great　influence　on　the　way　of　polarization.　Copyright　No　content　may　be　reproduced　or　abridged　without　authorization.