Abstract: A triboelectric nanogenerator structure is provided. The triboelectric nanogenerator structure is composed of an upper electrode layer, a lower triboelectric layer, a lower electrode layer and an electric connecting member. The upper electrode layer is composed of a hybrid gel. The lower triboelectric layer corresponding to the upper electrode layer has a first surface and a second surface, and the first surface faces toward the upper electrode layer. The lower electrode layer is disposed at the second surface. The electric connecting member connects the upper electrode layer to the lower electrode layer.

Abstract: A triboelectric nanogenerator structure is provided. The triboelectric nanogenerator structure is composed of an upper electrode layer, a lower triboelectric layer, a lower electrode layer and an electric connecting member. The upper electrode layer is composed of a hybrid gel. The lower triboelectric layer corresponding to the upper electrode layer has a first surface and a second surface, and the first surface faces toward the upper electrode layer. The lower electrode layer is disposed at the second surface. The electric connecting member connects the upper electrode layer to the lower electrode layer.

Abstract: A dual-band antenna (1) includes a first antenna (2) and a second antenna (3). The first antenna includes a u-shaped first dipole half (11) and an n-shaped second dipole half (12). The first dipole half is disposed above the second dipole half with a space therebetween and the two dipole halves are mirror imaged. The second antenna includes a u-shaped third dipole half (21) and an n-shaped fourth dipole half (22). The first and the third dipole halves are crossly connected with each other at bottom. The second and the fourth dipole halves are crossly connected with each other at top.

Abstract: A dual-band antenna (1) includes a first antenna (2) and a second antenna (3). The first antenna includes a first dipole half (11) and a second dipole half (12). The first dipole half is disposed above the second dipole half with a space therebetween and the two dipole halves are corresponding to each other in a lengthwise direction. The second antenna includes a coaxial cable (4) including an inner conductor feeding the first antenna and comprising an exposed extending section (40) acting as a radiating portion of the second antenna, and a ground patch (5) electrically connected with the second dipole half.

Abstract: A cable includes a number of conductive wires arranged loosely from one another and an elongate protecting sheet surrounding the number of conductive wires such that the conductive wires are free to move with respect to each other when the cable are bent. The protecting sheet has at least an adhesive strip along the sheet. When the protecting sheet is helically wrapped along the conductive wires, the conductive wires are untouched by the adhesive strip.