Abstract: An antenna and a method for modulating an operating frequency band of the antenna are provided. The present antenna includes a plastic body comprising at least a hallow portion, and a metal element disposed inside the plastic body, wherein the metal element is flat and comprises a planar radiation portion and two extending portions, wherein a shape and a size of the hallow portion are adjustable. The operating frequency band of the antenna is modulated according to a shape and a size of the hallow portion.

Abstract: A fastening device is shaped like ‘F’. The fastening device is positioned precisely and is prevented from being inserted too deep on inserting it into a seat. In addition, the structure of the seat is strengthened.

Abstract: A card edge connector includes a connection part and a position guider. The connection part includes a plurality of terminals disposed in parallel to electrically connect to contacts of a daughter board. The position guider disposed inside the connection part includes a guiding structure formed at two opposing lateral sides of the position guider. The guiding structure includes two slant surfaces extending respectively away from the left and right sides of the position guider. The slant surfaces are used to align the daughter board into a desired position to reduce a misalignment shift between the terminals of the connection part and the contacts of the daughter board.

Abstract: A monitor auto-adjustment system comprises a lifting mechanism and an adjusting mechanism which each links separately to a power unit. The power unit linking to the lifting mechanism is used for moving a sleeve vertically and the other linking to the adjusting mechanism is used for adjusting the pitch angle by means of using a driven-gear to drive a toothlike adjuster installed on a brace connected to a monitor. The power unit drives a gear to accomplish the adjustment of the height and pitch angle of a monitor automatically. The monitor auto-adjustment system improves the convenience and utility much more than any existing manually adjusted monitor.

Abstract: A card edge connector includes a connection part and a position guider. The connection part includes a plurality of terminals disposed in parallel to electrically connect to contacts of a daughter board. The position guider disposed inside the connection part includes a guiding structure formed at two opposing lateral sides of the position guider . The guiding structure includes two slant surfaces extending respectively away from the left and right sides of the position guider. The slant surfaces are used to align the daughter board into a desired position to reduce a misalignment shift between the terminals of the connection part and the contacts of the daughter board.

Abstract: An antenna includes an electrically insulative narrow elongated bracket, a coiled resonant conductor sleeved onto the bracket, a coaxial cable signal line extended out of one end of the bracket, a first metal conducting connecting member fastened to the bracket and connected to one end of the coiled resonant conductor, and a second metal conducting connecting member fastened to outer insulative layer and a tubular braided conducting layer of the signal line to secure the signal line to the bracket and to let the center conductor of the signal line be electrically connected to the first metal conducting connecting member and the resonant conductor.