Asustek Computer Inc.

Chun-Hsiung Wang

Ming-Iu Lai

Tzung-Yu Wu

Yung-Chi Fan

Hung-Hsiang Chen

Yang-Po Chiu

Ming-lu Lai

A miniature wire antenna includes N rectangular metal plates located at a first layer of a PCB, a tunable metal plate located at the first layer of the PCB and N serpentine lines located at a second layer of the PCB. The positions of the N serpentine lines correspond to the positions of the rectangular metal plates. A first end of each of the serpentine lines is connected to the corresponding rectangular metal plate, and a second end of each of the serpentine lines is connected to the next rectangular metal plate. A first end of the last serpentine line is connected to the corresponding rectangular metal plate, and a second end of the last serpentine line is connected to the tunable metal plate.

Miniature wire antenna

A planar antenna disposed on a plate having a first surface and a second surface is provided. The planar antenna includes a metal layer, an antenna body, a stepped impedance device, a coupling device and a matching device. The metal layer is disposed on the first surface and has a slot line exposing the first surface. The antenna body, the stepped impedance device, the coupling device and the matching device are disposed on the second surface. The antenna body is corresponding to a surrounding of the metal layer except a feed end thereof, the stepped impedance device and the matching device are corresponding to the metal layer, and the coupling device is corresponding to the slot line. The matching device is coupled between the coupling device and the feed end. The stepped impedance device has a transmission zero in a radio frequency band operated by the antenna body.

Planar antenna and wireless communication apparatus

A planar multi-band antenna includes a substrate and a metal pattern. The metal pattern includes a first metal wire, a second metal wire, a third metal wire and a fourth metal wire. The second metal wire is disposed opposite to the first metal wire and has a grounding point. Two ends of the third metal wire are connected to the first metal wire and second metal wire, respectively, and the first metal wire is divided into a first radiation portion and a second radiation portion. The fourth metal wire is partially located between the second radiation portion and the second metal wire and forms multiple bends, and has a first impedance matching portion and a feed point, and part of the fourth metal wire coincides with the second radiation portion in a projection direction. By the activation of the feeding point and the grounding point associates with the impedance matching portion, the antenna has plural bands.

Planar multi-band antenna

An antenna device including a substrate, a ground layer, a first feeding element, a second feeding element, a first control circuit and a second control circuit is provided. The substrate has a top surface and a lower surface. The ground layer disposed on the lower surface includes a first, a second and a third ground portions. The third ground portion is separated from the first and the second ground portions by a first and a second slots, respectively. The first and the second feeding elements include a first and a second conductive feeding lines, respectively. The first and the second conductive feeding lines cross over the first and the second slots and are electrically connected to the first and the second ground portions, respectively. The radiation pattern of the antenna device is variable by selectively operating the first, the second, the third and the fourth control circuits.

Antenna device

An antenna includes a base plate, a grounding component, a feed-in conductor, a first controlling unit and a second controlling unit. The base plate includes a first surface and a second surface. The grounding component is provided on the first surface and includes a first part, a second part and a notch formed between the first part and the second part. The feed-in conductor is provided on the second surface and includes a first conducting part. The first conducting part extends across the notch, and is coupled to the first part. The first controlling unit is provided on the second surface and includes a first wire. The first wire extends across the notch, and is coupled to the first part. The second controlling unit is provided on the second surface and includes a second wire. The second wire extends across the notch, and is coupled to the first part.

Antenna

A smart antenna with an adjustable radiation pattern is described. A plurality of slot antennas are formed at a metal layer which is grounded, wherein openings of the slot antennas point to different directions. One surface of an insulated layer is covered by the metal layer. A coaxial feeding structure is provided through the insulated layer. A plurality of microstrip lines are formed at the other surface of the insulated layer and can feed the radio frequency signals to the slot antennas, respectively. Pluralities of switches are connected to each microstrip line and the coaxial feeding structure. A plurality of bias circuits are electrically connected to each switch, respectively, to control the status of the switch and adjust the operation statuses of the slot antennas individually to form an adjustable radiation pattern.

Growing community of inventors

Taipei, Taiwan

Chun-Hsiung Wang