Abstract: A mobile device includes a system circuit board, a metal frame, one or more other antenna elements, a display device, a first feeding element, and an RF (Radio Frequency) module. The system circuit board includes a system ground plane. The metal frame at least includes a first portion and a second portion. The metal frame at least has a first cut point positioned between the first portion and the second portion. The metal frame further has a second cut point for separating the other antenna elements from the first portion. The first cut point is arranged to be close to a middle region of the display device. The first feeding element is directly or indirectly electrically connected to the first portion. A first antenna structure is formed by the first feeding element and the first portion.

Abstract: An elliptical exercise apparatus with a swinging effect has a pedals, a crank mechanism, a damping mechanism and pedals. A pair of sloping guide rails are arranged symmetrically between the front support and a middle support of a pedestal. One end of the pair of sloping guide rails is arranged laterally. A pair of pedals are arranged separately onto the pair of sloping guide rails and connected with the crank mechanism. A slide guide is steerably set at a front bottom of the pedals and slidably mated with the pair of sloping guide rails. A universal joint is set at the rear bottom of the pedals and is connected to the left and right cranks.

Abstract: An elliptical treadmill with torsional swinging effect having pedestals, a crank mechanism, a damping device and pedals. Two sloping guide rails are arranged symmetrically between the front and middle supports of the pedestal. One end of two sloping guide rails connecting the front support is arranged laterally. Two pedals are arranged separately onto two sloping guide rails and connected with the crank mechanism. A slide guide is set at front bottom of the pedals in a steerable state and mated onto two sloping guide rails in a sliding state. A universal joint is set at rear bottom of the pedals and connected with left and right cranks. With this configuration, this can resolve the limitation of a conventional elliptical treadmill, enabling the pedals to generate both elliptical and torsional swinging movements, bringing the users a different feeling and improving the fitness effect with higher flexibility and applicability.