Abstract: A detachable antenna and an electronic device are provided. The detachable antenna includes a connector, an antenna module, and a light-emitting module. The light-emitting module includes a light-emitting unit and a bias circuit. The bias circuit includes an input end, a first output end, and a second output end. The input end of the bias circuit receives a mixed signal from the connector. The mixed signal includes a communication signal and a drive signal. The first output end of the bias circuit outputs the communication signal to the antenna module. The second output end of the bias circuit outputs the drive signal to the light-emitting unit. The detachable antenna of the disclosure is integrated with the light-emitting module and receives the mixed signal from a single input end to implement communication and light emitting functions simultaneously.

Abstract: A wireless network transmission system is provided. The wireless network transmission system comprises a first transmission device and at least a second transmission device. The first transmission device includes a control circuit and a plurality of first antennas. The control circuit is electrically connected to the first antennas. The second transmission device is configured to be communicated with the first transmission device. The first antennas receive wireless signals from the second transmission device. The control circuit is configured to compare signal strength of the wireless signal received by each of the first antennas to generate a comparison result select at least one of the first antennas to transmit or receive the wireless signals according to the comparison result. A wireless network transmission method and a transmission device are also provided.

Abstract: A wireless network transmission system is provided. The wireless network transmission system comprises a first transmission device and at least a second transmission device. The first transmission device includes a control circuit and a plurality of first antennas. The control circuit is electrically connected to the first antennas. The second transmission device is configured to be communicated with the first transmission device. The first antennas receive wireless signals from the second transmission device. The control circuit is configured to compare signal strength of the wireless signal received by each of the first antennas to generate a comparison result select at least one of the first antennas to transmit or receive the wireless signals according to the comparison result. A wireless network transmission method and a transmission device are also provided.

Abstract: An antenna module includes a substrate, a casing and at least two antennas. The substrate is disposed in the casing, and the antennas are disposed on the substrate and perpendicular to each other. Accordingly, the entire size of the antenna module can be decreased and it is still possible to provide the optimum signal transmission performance.

Abstract: A multi-input multi-output (MIMO) antenna system includes multiple antennas, a ground part and an isolating part. The isolating part is disposed between each two adjacent antennas. The isolating part is electrically connected to the ground part. A distance exists between an end of the antenna and an end of the isolating part. A circuit board applying the MIMO antenna system is also disclosed. Since the isolating part is disposed between each two adjacent antennas, signal interference between the antennas can be prevented, and the MIMO antenna system and the circuit board applying the same have better isolation.

Abstract: An antenna structure includes a circuit board with a ground surface and a printed antenna. The printed antenna includes a signal feed-in portion, a first radiating unit connected to the signal feed-in portion and a second radiating unit connected to the first radiating unit. The first radiating unit includes a first printed thickness, and the second radiating unit includes a second printed thickness. At least part of the second printed thickness is larger than the first printed thickness.

Abstract: An array antenna and an electronic apparatus using the array antenna are provided. The array antenna includes a plurality of antenna units, a first connection line, and a second connection line. Each of the antenna units includes a rectangular radiation region, a first feeding line and a second feeding line. The first and second feeding lines are connected to two adjacent feeding corners of the rectangular radiation region. The first connection line and the second connection line are disposed at two sides of the antenna unit for connection with the other ends of the first feeding line and the second feeding line, respectively.

Abstract: An antenna structure includes a circuit board with a ground surface and a printed antenna. The printed antenna includes a signal feed-in portion, a first radiating unit connected to the signal feed-in portion and a second radiating unit connected to the first radiating unit. The first radiating unit includes a first printed thickness, and the second radiating unit includes a second printed thickness. At least part of the second printed thickness is larger than the first printed thickness.

Abstract: An antenna structure includes a circuit board with a ground surface and a printed antenna. The printed antenna includes a signal feed-in portion, a first radiating unit connected to the signal feed-in portion and a second radiating unit connected to the first radiating unit and has a plurality of printed layers. The first radiating unit diverges and forms a first radiating element having a first turning portion and a second radiating element at a first end, and the first radiating element and the second radiating element are combined at a second end. The second radiating unit includes a third radiating element, a fourth radiating element, a second turning portion located between the third radiating element and the second end and a third turning portion located between the third radiating element and the fourth radiating element. A distance is formed between the fourth radiating element and the ground surface.

Abstract: A planar antenna including a substrate, multiple antenna bodies and a metal layer is provided. The antenna bodies are disposed at a surface of the substrate, and the metal layer is disposed at another surface of the substrate. The metal layer has multiple slots which interlace with the antenna bodies. The antenna bodies are partially corresponding to the metal layer and used to cooperate with a communication system which can perform a multi-path transmission to send and receive electromagnetic signals for a multiple MIMO system simultaneously.

Abstract: An array antenna and an electronic apparatus using the array antenna are provided. The array antenna includes a plurality of antenna units, a first connection line, and a second connection line. Each of the antenna units includes a rectangular radiation region, a first feeding line and a second feeding line. The first and second feeding lines are connected to two adjacent feeding corners of the rectangular radiation region. The first connection line and the second connection line are disposed at two sides of the antenna unit for connection with the other ends of the first feeding line and the second feeding line, respectively.

Abstract: An antenna structure includes a circuit board with a ground surface and a printed antenna. The printed antenna includes a signal feed-in portion, a first radiating unit connected to the signal feed-in portion and a second radiating unit connected to the first radiating unit and has a plurality of printed layers. The first radiating unit diverges and forms a first radiating element having a first turning portion and a second radiating element at a first end, and the first radiating element and the second radiating element are combined at a second end. The second radiating unit includes a third radiating element, a fourth radiating element, a second turning portion located between the third radiating element and the second end and a third turning portion located between the third radiating element and the fourth radiating element. A distance is formed between the fourth radiating element and the ground surface.

Abstract: An antenna device. The antenna device includes a printed circuit board, a conductive shield, a first connection portion and a second connection portion. The printed circuit board has a feed point and a ground plane insulated from the feed point. The conductive shield surrounds the printed circuit board. The first connection portion is substantially perpendicular to the printed circuit board, electrically connecting the feed point and the conductive shield. The second connection portion is substantially perpendicular to the printed circuit board, electrically connecting the ground plane and the conductive shield.

Abstract: An antenna device. The antenna device includes a printed circuit board, a conductive shield, a first connection portion and a second connection portion. The printed circuit board has a feed point and a ground plane insulated from the feed point. The conductive shield surrounds the printed circuit board. The first connection portion is substantially perpendicular to the printed circuit board, electrically connecting the feed point and the conductive shield. The second connection portion is substantially perpendicular to the printed circuit board, electrically connecting the ground plane and the conductive shield.

Abstract: An antenna module includes a circuit board, a differential-type amplifier, and a dipole antenna. The dipole antenna can be formed with two electrodes disposed on the circuit board. With the structure of the antenna module, a transmitting antenna can be designed by coupling the two electrodes of the dipole antenna to output terminals of the differential-type amplifier so as to transmit signals. In design of a receiving antenna, the two electrodes of the dipole antenna can be coupled to input terminals of the differential-type amplifier so as to receive signals. Further, if the main function chip has built-in differential power amplifier or differential low noise amplifier, a circuit module for wireless signal transmitting and receiving can be formed by directly coupling the dipole antenna to the differential power amplifier or the differential low noise amplifier.