Abstract: A three-dimensional antenna includes an L-shaped grounding element and an L-shaped radiating element. The grounding and radiating elements are arranged in a U shape. The grounding element includes a first grounding segment, a second grounding segment extending from the first grounding segment, and a short-circuit point disposed at the second grounding segment. The radiating element includes a first radiating segment opposite to the first grounding segment, a second radiating segment extending from the first radiating segment and adjacent to the second grounding segment, a feeding point disposed at the second radiating segment, and two radiator arms being able to generate respective resonant frequencies.

Abstract: An antenna structure for wearable electronic device has a device casing, an antenna ground structure joined with the device casing, a carrier connected to the device casing, and an antenna radiation structure joined with the carrier. Thereby, the antenna structure can be integrated into the original structure of a wearable device so that the volume of the wearable device can be reduced, which solves the difficulty in reducing the volume of a wireless communication device with a requirement of an antenna disposition in the prior art. In addition, a wearable wireless electronic device has the antenna structure so as to have the advantage of smaller volume relative to a wearable wireless electronic device in the prior art.

Abstract: A signal transmission interface includes: a USB audio format encoding unit adapted to be coupled to a digital broadcast receiving end, for converting a digital audio signal that originates from the digital broadcast receiving end into a USB audio signal; a USB hub coupled to the USB audio format encoding unit and adapted to be coupled to a host end, for transmitting the USB audio signal to the host end and receiving a USB control signal that originates from the host end; and a USB/serial transmission bus bridge unit coupled to the USB hub and adapted to be coupled to the digital broadcast receiving end, for converting the USB control signal that is transmitted from the USB hub into a serial transmission bus control signal, and transmitting the serial transmission bus control signal to the digital broadcast receiving end.

Abstract: A radio-frequency circuit for a wireless signal transceiver is disclosed. The wireless signal transceiver is utilized for receiving a first wireless signal and transforming the first wireless signal into a second wireless signal. The radio-frequency circuit includes a transmission line including a first end and a second end, a reception antenna coupled to the first end of the transmission line for receiving the first wireless signal, a transmission antenna coupled to the first end of the transmission line for emitting the second wireless signal, a first filtering circuit coupled between the second end of the transmission line and the wireless signal transceiver for filtering out the first wireless signal, and a second filtering circuit coupled between the second end of the transmission line and the wireless signal transceiver for filtering out the second wireless signal.

Abstract: A signal transmission interface includes: a USB audio format encoding unit adapted to be coupled to a digital broadcast receiving end, for converting a digital audio signal that originates from the digital broadcast receiving end into a USB audio signal; a USB hub coupled to the USB audio format encoding unit and adapted to be coupled to a host end, for transmitting the USB audio signal to the host end and receiving a USB control signal that originates from the host end; and a USB/serial transmission bus bridge unit coupled to the USB hub and adapted to be coupled to the digital broadcast receiving end, for converting the USB control signal that is transmitted from the USB hub into a serial transmission bus control signal, and transmitting the serial transmission bus control signal to the digital broadcast receiving end.

Abstract: A radio-frequency circuit for a wireless signal transceiver is disclosed. The wireless signal transceiver is utilized for receiving a first wireless signal and transforming the first wireless signal into a second wireless signal. The radio-frequency circuit includes a transmission line including a first end and a second end, a reception antenna coupled to the first end of the transmission line for receiving the first wireless signal, a transmission antenna coupled to the first end of the transmission line for emitting the second wireless signal, a first filtering circuit coupled between the second end of the transmission line and the wireless signal transceiver for filtering out the first wireless signal, and a second filtering circuit coupled between the second end of the transmission line and the wireless signal transceiver for filtering out the second wireless signal.

Abstract: A signal receiver. The signal receiver comprises a flat antenna, a partition, a board, and a plug. The antenna has a receiving element and an antenna surface. The partition has a first partition surface and a second partition surface. The first partition surface contacts the antenna surface. The board has a first board surface, a second board surface and a circuit. The first board surface contacts the second partition surface. The circuit is disposed on the second board surface. The plug has a first pin which is projected through the board and fixed on the first board surface. The first pin is connected with the circuit.

Abstract: A signal receiver. The signal receiver comprises a flat antenna, a partition, a board, and a plug. The antenna has a receiving element and an antenna surface. The partition has a first partition surface and a second partition surface. The first partition surface contacts the antenna surface. The board has a first board surface, a second board surface and a circuit. The first board surface contacts the second partition surface. The circuit is disposed on the second board surface. The plug has a first pin which is projected through the board and fixed on the first board surface. The first pin is connected with the circuit.