Abstract: A multi-band antenna includes a circuit board having an insulation dielectric layer, a first ground plane and an impedance matching circuit formed on a first plane of the circuit board, and a second ground plane formed on a second plane of the circuit board. A slot antenna radiation main body, formed at a location of the second ground plane and corresponding to the exposed part of the insulation dielectric layer, includes first and second radiation main bodies. The first radiation main body includes a first impedance matching part and a first resonance part. The second radiation main body includes a second impedance matching part and a second resonance part. The first resonance part includes a plurality of first bends, a first segment, and a second segment. The second resonance part includes a plurality of second bends, a third segment, and a fourth segment.

Abstract: A wideband antenna structure is disclosed. The wideband antenna is disposed on a printed circuit board, and includes a substrate, a first ground sheet, a main radiator and a parasitic element. The substrate has a first surface and a second surface opposite to the first surface. The first surface includes a first antenna area and a first grounding area connected to the first antenna area. The first antenna area has a first side along a first direction, a second side along a second direction, a third side opposite to the first side and a fourth side opposite to the second side. The first grounding sheet is disposed in the first grounding area, and next to the first, the second and the third sides. The main radiator is disposed in the first antenna area, and includes a feeding point near the second side; a first radiator extending from the feeding point along the first direction to a turning point; and a second radiator extending from the turning point toward the third side along the second direction.

Abstract: A multi-band antenna includes a circuit board having an insulation dielectric layer, a first ground plane and an impedance matching circuit formed on a first plane of the circuit board, and a second ground plane formed on a second plane of the circuit board. A slot antenna radiation main body, formed at a location of the second ground plane and corresponding to the exposed part of the insulation dielectric layer, includes first and second radiation main bodies. The first radiation main body includes a first impedance matching part and a first resonance part. The second radiation main body includes a second impedance matching part and a second resonance part. The first resonance part includes a plurality of first bends, a first segment, and a second segment. The second resonance part includes a plurality of second bends, a third segment, and a fourth segment.

Abstract: The disclosure is related to a printed coupled-fed multi-band antenna, and a related electronic system. The antenna includes a first antenna member structurally with a mushroom-shaped radiation portion and an antenna connection portion being electrically connected with a ground plane. The mushroom-shaped radiation portion is employed to activate first band electromagnetic wave. The antenna includes a second antenna member, which may be shaped as a U-shaped radiation portion. The second antenna member is floating within a region surrounded by the mushroom-shaped radiation portion, the antenna connection portion and the ground plane. The U-shaped radiation portion is coupled with both the ground plane and the mushroom-shaped radiation portion. The coupling effect allows the second antenna member to activate a second band electromagnetic wave. The multiple band signaling paths are formed over the printed antenna for application of a multi-band antenna.

Abstract: The disclosure is related to a printed coupled-fed multi-band antenna, and a related electronic system. The antenna includes a first antenna member structurally with a mushroom-shaped radiation portion and an antenna connection portion being electrically connected with a ground plane. The mushroom-shaped radiation portion is employed to activate first band electromagnetic wave. The antenna includes a second antenna member, which may be shaped as a U-shaped radiation portion. The second antenna member is floating within a region surrounded by the mushroom-shaped radiation portion, the antenna connection portion and the ground plane. The U-shaped radiation portion is coupled with both the ground plane and the mushroom-shaped radiation portion. The coupling effect allows the second antenna member to activate a second band electromagnetic wave. The multiple band signaling paths are formed over the printed antenna for application of a multi-band antenna.

Abstract: A dual-band three-dimensional (3D) antenna is disclosed, which comprises: a first radiation unit; a resonant extension unit, being disposed not on the same plane with the first radiation unit; a feeder unit, coupled to the first radiation unit while allowing an opening to be formed at a position between the feeder unit and the first radiation unit; a connection unit, coupled to a substrate and the feeder unit while allowing an obliquely extending unit to be formed at a position between the connection unit and the feeder unit; and a second radiation unit, coupled to the resonant extension unit.