Abstract: An antenna system with switchable radiation gain includes a signal feeding element, a first antenna element, a second antenna element, a first diode, a first switch element, a second switch element, a first impedance transformer, and a second impedance transformer. The first antenna element is coupled to a first connection point. The second antenna element is coupled to a second connection point. The first diode has an anode coupled to the first connection point, and a cathode coupled to the second connection point. The first switch element and the second switch element are configured to select either the first impedance transformer or the second impedance transformer as a first target transformer, and the selected first target transformer is coupled between the first connection point and the signal feeding element.

Abstract: A multi-directional output device includes a printed circuit board on which first and second magnetic sensors are arranged, and a direction control unit arranged above the printed circuit board. The direction control unit includes: first and second rotating driving bodies; first and second sliding driving bodies respectively movably connected to the first and second rotating driving bodies; first and second magnets respectively fixed on the first and second sliding driving bodies; and a lower cover on which first and second slide grooves are provided, wherein the first and second sliding driving bodies are respectively slidably arranged in the first and second slide grooves, and the first magnetic sensor and the second magnetic sensor are arranged corresponding to the first slide groove and the second slide groove, respectively.

Abstract: An encoder with a light emitting diode includes: a light emitting diode, a switch module, an encoder module and a control shaft. The switch module includes an insulating base having a terminal part, a conductive elastic piece and a pressing driving body. The conductive elastic piece is disposed in the insulating base, and is disposed above the terminal part. The pressing driving body is disposed in the insulating base and is disposed above the conductive elastic piece for accommodating the light emitting diode. At least part of the encoder module is disposed in the insulating base, and the encoder module includes a magnetic sensor, a magnetic ring and a rotating driving body. The control shaft passes through a penetration hole of the rotating driving body, and is disposed above the pressing driving body.

Abstract: An antenna system includes a first antenna element, a second antenna element, a dielectric substrate, a first reflective plate, and a second reflective plate. The first antenna element and the second antenna element are disposed on the dielectric substrate. The first reflective plate is adjacent to the dielectric substrate. The second reflective plate is coupled to the first reflective plate. A first angle is formed between the first reflective plate and the second reflective plate. The antenna system provides a relative large HPBW (Half-Power Beamwidth).

Abstract: An antenna system includes a signal feeding element, a first antenna element, a second antenna element, a first selection circuit, a second selection circuit, a first transmission line, a second transmission line, a third transmission line, a fourth transmission line, a fifth transmission line, and a sixth transmission line. The first selection circuit selects one of the first transmission line, the second transmission line, and the third transmission line as a first target transmission line. The selected first target transmission line is coupled between a third connection point and a first connection point. The second selection circuit selects one of the fourth transmission line, the fifth transmission line, and the sixth transmission line as a second target transmission line. The selected second target transmission line is coupled between a fourth connection point and a second connection point.

Abstract: An antenna structure includes a ground element, a first radiation element, a second radiation element, a dielectric substrate, a first feeding element, a second feeding element, a third feeding element, and a fourth radiation element. The dielectric substrate has a first surface and a second surface. The first radiation element is disposed on the first surface. The second radiation element is adjacent to the first radiation element, and is separate from the first radiation element. The first feeding element has a first feeding port, and is coupled to the first radiation element. The second feeding element has a second feeding port, and is coupled to the first radiation element. The third feeding element has a third feeding port, and is coupled to the first radiation element. The fourth feeding element has a fourth feeding port, and is coupled to the first radiation element.

Abstract: A multi-directional output device includes a printed circuit board on which first and second magnetic sensors are arranged, and a direction control unit arranged above the printed circuit board. The direction control unit includes: first and second rotating driving bodies; first and second sliding driving bodies respectively movably connected to the first and second rotating driving bodies; first and second magnets respectively fixed on the first and second sliding driving bodies; and a lower cover on which first and second slide grooves are provided, wherein the first and second sliding driving bodies are respectively slidably arranged in the first and second slide grooves, and the first magnetic sensor and the second magnetic sensor are arranged corresponding to the first slide groove and the second slide groove, respectively.

Abstract: A multi-directional output device includes a printed circuit board on which first and second magnetic sensors are arranged, and a direction control unit arranged above the printed circuit board. The direction control unit includes first and second rotary driving bodies, first and second magnets, a shaft stick, a balance washer, and an annular spring, wherein the first and second rotary driving bodies are each a rotatable elongated arc-shaped structure. The first and second magnets are respectively fixed on one end of the first rotary driving body and one end of the second rotary driving body. The balance washer is disposed below the shaft stick and in contact with the first and second rotary driving bodies. The annular spring is arranged under the balance washer and in contact with the balance washer. The first and second magnetic sensors are arranged to correspond to the first and second magnets, respectively.

Abstract: A transmission device with a phase-adjustment function includes a first dielectric layer, a signal line, a ground plane, and a first parasitic element. The first dielectric layer has a first surface and a second surface which are opposite to each other. The signal line is disposed on the first surface of the first dielectric layer. The ground plane is disposed on the second surface of the first dielectric layer. The first parasitic element is coupled to a first connection point on the signal line. The first parasitic element is configured to provide a first delay phase.

Abstract: An antenna system includes a signal feeding element, a first antenna element, a second antenna element, a first transmission line, and a second transmission line. The first antenna element is coupled to a first connection point. The second antenna element is coupled to a second connection point. The first transmission line is coupled between the signal feeding element and the first connection point. The second transmission line is coupled between the signal feeding element and the second connection point. The length of the second transmission line is substantially equal to that of the first transmission line. The first antenna element and the second antenna element substantially have opposite polarization directions. Therefore, the radiation pattern of the antenna system can provide a plurality of different gain peaks.

Abstract: An antenna system with switchable radiation gain includes a signal feeding element, a first antenna element, a second antenna element, a first diode, a first switch element, a second switch element, a first impedance transformer, and a second impedance transformer. The first antenna element is coupled to a first connection point. The second antenna element is coupled to a second connection point. The first diode has an anode coupled to the first connection point, and a cathode coupled to the second connection point. The first switch element and the second switch element are configured to select either the first impedance transformer or the second impedance transformer as a first target transformer, and the selected first target transformer is coupled between the first connection point and the signal feeding element.

Abstract: An antenna system includes a signal feeding element, a first antenna element, a second antenna element, a first selection circuit, a second selection circuit, a first transmission line, a second transmission line, a third transmission line, a fourth transmission line, a fifth transmission line, and a sixth transmission line. The first selection circuit selects one of the first transmission line, the second transmission line, and the third transmission line as a first target transmission line. The selected first target transmission line is coupled between a third connection point and a first connection point. The second selection circuit selects one of the fourth transmission line, the fifth transmission line, and the sixth transmission line as a second target transmission line. The selected second target transmission line is coupled between a fourth connection point and a second connection point.

Abstract: The present disclosure a bandwidth allocation method including steps of: (a) providing a base station and a user equipment, wherein the base station provides a plurality of bandwidth parts for the user equipment within a service area; (b) selecting a bandwidth part from the plurality of bandwidth parts as a reference bandwidth part and utilizing the base station to transmit a reference signal through the reference bandwidth part; (c) utilizing the user equipment to receive the reference bandwidth part and output a channel report according to a channel status of the reference bandwidth part, wherein the channel report includes a channel quality indication; (d) determining whether the channel quality indication is greater than a first critical value, performing a step (e) when the determination result is not satisfied; and (e) instructing the user equipment to switch to a bandwidth part with a smaller frequency band as the reference bandwidth part.

Abstract: An antenna system includes a first antenna element, a second antenna element, a dielectric substrate, a first reflective plate, and a second reflective plate. The first antenna element and the second antenna element are disposed on the dielectric substrate. The first reflective plate is adjacent to the dielectric substrate. The second reflective plate is coupled to the first reflective plate. A first angle is formed between the first reflective plate and the second reflective plate. The antenna system provides a relative large HPBW (Half-Power Beamwidth).

Abstract: An antenna structure includes a loop radiation element, a balance radiation element, a first additional radiation element, and a second additional radiation element. The loop radiation element has a first feeding point. The balance radiation element has a second feeding point. The balance radiation element is coupled to at least a first connection point on the loop radiation element. The balance radiation element is substantially surrounded by the loop radiation element. The first additional radiation element is coupled to a second connection point on the loop radiation element. The second additional radiation element is coupled to a third connection point on the loop radiation element. The loop radiation element is disposed between the first additional radiation element and the second additional radiation element.

Abstract: An antenna structure includes a ground element, a first radiation element, a second radiation element, a dielectric substrate, a first feeding element, a second feeding element, a third feeding element, and a fourth radiation element. The dielectric substrate has a first surface and a second surface. The first radiation element is disposed on the first surface. The second radiation element is adjacent to the first radiation element, and is separate from the first radiation element. The first feeding element has a first feeding port, and is coupled to the first radiation element. The second feeding element has a second feeding port, and is coupled to the first radiation element. The third feeding element has a third feeding port, and is coupled to the first radiation element. The fourth feeding element has a fourth feeding port, and is coupled to the first radiation element.

Abstract: A dipole antenna includes a first conductor, a second conductor, a first radiation element, and a second radiation element. The first conductor has a first feeding point. The second conductor has a second feeding point. The first radiation element is coupled to the first conductor. The second radiation element is coupled to the second conductor. The dipole antenna covers an operation frequency band. The first radiation element at least includes a first meandering structure. The first meandering structure is configured to suppress the frequency multiplication resonance with respect to the operation frequency band.

Abstract: An antenna structure includes a loop radiation element, a balance radiation element, a first additional radiation element, and a second additional radiation element. The loop radiation element has a first feeding point. The balance radiation element has a second feeding point. The balance radiation element is coupled to at least a first connection point on the loop radiation element. The balance radiation element is substantially surrounded by the loop radiation element. The first additional radiation element is coupled to a second connection point on the loop radiation element. The second additional radiation element is coupled to a third connection point on the loop radiation element. The loop radiation element is disposed between the first additional radiation element and the second additional radiation element.

Abstract: A dipole antenna includes a first conductor, a second conductor, a first radiation element, and a second radiation element. The first conductor has a first feeding point. The second conductor has a second feeding point. The first radiation element is coupled to the first conductor. The second radiation element is coupled to the second conductor. The dipole antenna covers an operation frequency band. The first radiation element at least includes a first meandering structure. The first meandering structure is configured to suppress the frequency multiplication resonance with respect to the operation frequency band.

Abstract: An antenna structure includes a main radiation element, a first feeding element, a first additional radiation element, a dielectric substrate, and a ground plane. A first signal source is coupled through the first feeding element to a first side of the main radiation element. The first additional radiation element is coupled to a second side of the main radiation element. A first slot is formed between the first additional radiation element and the main radiation element. The second side is different from the first side. The dielectric substrate has a first surface and a second surface which are opposite to each other. The main radiation element, the first feeding element, and the first additional radiation element are disposed on the first surface of the dielectric substrate. The ground plane is adjacent to the second surface of the dielectric substrate.