Abstract: An antenna device is provided. The antenna device comprises a first radiation portion and a second radiation portion. The first radiation portion includes a first end and a second end. The second radiation portion is connected to the first end at a connecting part and includes a first arm and a second arm. The first arm and the second arm have different lengths and extend from the connecting part.

Abstract: An improved inverted-F antenna, adapted for wireless communication devices, is disclosed, which comprises: a ground plane; a pin, coupled to a side of the ground plane while extending vertically upward therefrom; a first radiation unit, connected to an end of the pin that is not connected to the ground plane while enabling the periphery of the same to align with the periphery of the ground plane. Moreover, the inverted-F antenna is further comprised of: a second radiation unit, connected to the end of the first radiation unit that is not connected to the pin while enabling the same to be enveloped within the periphery of the ground plane, and being shaped like a fan tapering toward the end thereof that is connected to the first radiation unit; and a feed point, disposed extendingly from an end of the first radiation unit for feeding electrical signals.

Abstract: An antenna device is provided. The antenna device comprises a first radiation portion and a second radiation portion. The first radiation portion includes a first end and a second end. The second radiation portion is connected to the first end at a connecting part and includes a first arm and a second arm. The first arm and the second arm have different lengths and extend from the connecting part.

Abstract: A single-band antenna, comprising: a substrate; a first radiation unit; a conductive material; an impedance matching circuit; a signal feed-in terminal; a second radiation unit; and a wire connecting unit. Therefore, the single-band antenna can be miniaturized to be installed with or inside a compact wireless transmission device with enhanced transceiving performance.

Abstract: An improved inverted-F antenna, adapted for wireless communication devices, is disclosed, which comprises: a ground plane; a pin, coupled to a side of the ground plane while extending vertically upward therefrom; a first radiation unit, connected to an end of the pin that is not connected to the ground plane while enabling the periphery of the same to align with the periphery of the ground plane. Moreover, the inverted-F antenna is further comprised of: a second radiation unit, connected to the end of the first radiation unit that is not connected to the pin while enabling the same to be enveloped within the periphery of the ground plane, and being shaped like a fan tapering toward the end thereof that is connected to the first radiation unit; and a feed point, disposed extendingly from an end of the first radiation unit for feeding electrical signals.

Abstract: A dual band antenna includes a grounding portion, a connection portion, a radiating portion, a radiating groove and a feeding portion. The connection portion has a top side and a bottom side disposed relatively, and has a first edge side and a second edge side connected to the top side and the bottom side. The bottom side of the connecting portion is connected with the grounding portion. The radiation portion is protruded from the first edge side of the connecting portion and neighboring to the top side of the connecting portion. The radiation groove is disposed on the inside of the connecting portion and neighboring to the second edge side and bottom side of the connecting portion, and has a opening located on the first edge side of the connecting portion. The feeding portion is formed on the connecting portion and neighboring to the opening of the radiation groove.

Abstract: A single-band antenna, comprising: a substrate; a first radiation unit; a conductive material; an impedance matching circuit; a signal feed-in terminal; a second radiation unit; and a wire connecting unit. Therefore, the single-band antenna can be miniaturized to be installed with or inside a compact wireless transmission device with enhanced transceiving performance.

Abstract: The present invention provides a heating apparatus which can be implemented as various articles for keeping human body warm, preventing from cold weather, insulating cold air, etc., e.g., warming clothes, electric blankets, hot compress pads, and curtains for insulating cold air. According to the invention, the heating apparatus includes a soft matrix, a metal yarn and a power supply. The metal yarn is integrated with the soft matrix to construct a loop pattern by a textile process, and has a first end line and a second end line. The first end line and the second end line of the metal yarn are detachably connected to the power supply. When the first end line and the second end line of the metal yarn both are connected to power supply, the power supply supplies the metal yarn with electric energy such that the metal yarn transfers the supplied electric energy into heat.

Abstract: The present invention provides a heating apparatus which can be implemented as various articles for keeping human body warm, preventing from cold weather, insulating cold air, etc., e.g., warming clothes, electric blankets, hot compress pads, and curtains for insulating cold air. According to the invention, the heating apparatus includes a soft matrix, a metal yarn and a power supply. The metal yarn is integrated with the soft matrix to construct a loop pattern by a textile process, and has a first end line and a second end line. The first end line and the second end line of the metal yarn are detachably connected to the power supply. When the first end line and the second end line of the metal yarn both are connected to power supply, the power supply supplies the metal yarn with electric energy such that the metal yarn transfers the supplied electric energy into heat.