tokens: ['location', 'of', 'the', 'port', 'is', 'at', 'the', 'right', 'back', 'corner', 'the', 'distance', 'between', 'the', 'central', 'axis', 'of', 'the', 'USB', 'connector', 'and', 'the', 'rear', 'edge', 'of', 'plane', 'is', 'mm', 'the', 'ground', 'of', 'the', 'USB', 'connector', 'is', 'welded', 'on', 'the', 'conductive', 'film', 'of', 'the', 'plane', 'The', 'detailed', 'description', 'of', 'the', 'structure', 'is', 'presented', 'in', 'Figure', '', '', 'a', 'USB', 'cable', 'crossing', 'the', 'ground', 'plane', 'and', 'connecting', 'the', 'USB', 'connector', 'to', 'a', 'real', 'functional', 'laptop', 'the', 'USB', 'cable', 'should', 'be', 'equipped', 'with', 'a', 'shielded', 'metal', 'film', 'and', 'the', 'portion', 'of', 'the', 'cable', 'that', 'is', 'hunged', 'in', 'the', 'air', 'shall', 'be', 'covered', 'with', 'absorbing', 'material', 'or', 'treated', 'with', 'quarter', 'wave', 'chokes', 'The', 'part', 'of', 'the', 'USB', 'cable', 'lying', 'on', 'the', 'plane', 'is', 'covered', 'by', 'a', 'conductive', 'adhesive', 'strip', 'used', 'for', 'fixing', 'the', 'cable', 'on', 'the', 'plane', 'and', 'for', 'guarantying', 'at', 'the', 'same', 'time', 'the', 'superficial', 'continuity', 'of', 'the', 'conductive', 'plane', 'The', 'shielded', 'conductive', 'film', 'of', 'this', 'part', 'of', 'the', 'USB', 'cable', 'is', 'connected', 'to', 'the', 'conductive', 'film', 'of', 'the', 'plane', 'and', 'the', 'covered', 'strip', 'to', 'well', 'ground', 'the', 'antenna', 'The', 'length', 'of', 'the', 'USB', 'cable', 'should']