2results about How to "Reduce additional" patented technology

A reconfigurable antenna and a communication device having the reconfigurable antenna include a substrate, a first electrode layer, a second electrode layer, a conductor, two ground wires, and two switches. The substrate has a first surface, a second surface, and a slot penetrating both surfaces. The first electrode layer has a first groove passing through the slot. The second electrode layer has a second groove passing through the slot. The conductor is located within the slot. The two ground wires are located on opposite sides of the first electrode layer. The two switches are located between the first electrode layer and the ground wires. When each switch is connected to its corresponding ground wire, the antenna forms an omnidirectional radiation pattern; when each switch is disconnected from its corresponding ground wire, the antenna forms a directional radiation pattern.

The utility model discloses a cutting and cloth pressing mechanism for a pocket opening machine, which comprises a base component, an external pressing component and an internal pressing component, both the external pressing component and the internal pressing component are fixed on the base component, the external pressing component can realize the functions of opening, folding and pressing pocket cloth, and the internal pressing component can realize the fixation of the pocket cloth and cloth to be sewn. A first limiting assembly and a second limiting assembly in the outer pressing assembly are matched with a third limiting assembly to be meshed and driven by a gear and a rack, the position of a bag opening of a cloth bag is adjusted, and therefore the width and the length of the bag opening are set to be changed, and a modularized pressing block in the inner pressing assembly is formed by combining a plurality of different pressing blocks. Various shapes can be formed according to requirements, the quick switching requirements of multi-specification bag openings are met, and the production efficiency is improved.