Abstract: An electronic device includes first and second bodies and two antenna modules. The first body includes a first metal housing. The second body is pivotally connected to the first body through two metal hinges and includes a second metal housing, a third metal housing, and a non-metal housing. The non-metal housing is connected to the second metal housing and close to the first body. The two antenna modules are disposed between the second metal housing, the third metal housing, and the non-metal housing, and close to the two metal hinges respectively. Each antenna module includes a radiating part located between the coupling ground part and the corresponding metal hinge and a coupling ground part close to the first metal housing. The 10 coupling ground part, the first metal housing, the metal hinge, the second metal housing, and the third metal housing together form a loop path.

Abstract: An antenna module includes a feeding end, multiple first forked radiators, and multiple connecting parts. The first forked radiators are disposed side by side. The connecting parts respectively extend from the feeding end to the first forked radiators. The feeding end, the first forked radiators, and the connecting parts are located on a same plane. The antenna module resonates at a frequency band, and a path length from the feeding end to an end of each of the forked radiators through the corresponding connecting part is ¼ wavelength of the frequency band.

Abstract: An antenna module includes a first antenna radiator including a feeding terminal, a second antenna radiator, a first ground radiator, a second ground radiator and a capacitive element. The second antenna radiator is disposed on one side of the first antenna radiator, and a first gap is formed between a main portion of the second antenna radiator and the first antenna radiator. The first ground radiator is disposed on another side of the first antenna radiator, and a second gap is formed between the first antenna radiator and the first antenna radiator. The second ground radiator is disposed between the second antenna radiator and the first ground radiator, and a third gap is formed between the second ground radiator and a first branch of the second antenna radiator. The capacitive element is disposed on the third gap and connects the second antenna radiator and the second ground radiator.

Abstract: An antenna module includes a feeding end, multiple first forked radiators, and multiple connecting parts. The first forked radiators are disposed side by side. The connecting parts respectively extend from the feeding end to the first forked radiators. The feeding end, the first forked radiators, and the connecting parts are located on a same plane. The antenna module resonates at a frequency band, and a path length from the feeding end to an end of each of the forked radiators through the corresponding connecting part is ¼ wavelength of the frequency band.

Abstract: An antenna module includes a first antenna radiator including a feeding terminal, a second antenna radiator, a first ground radiator, a second ground radiator and a capacitive element. The second antenna radiator is disposed on one side of the first antenna radiator, and a first gap is formed between a main portion of the second antenna radiator and the first antenna radiator. The first ground radiator is disposed on another side of the first antenna radiator, and a second gap is formed between the first antenna radiator and the first antenna radiator. The second ground radiator is disposed between the second antenna radiator and the first ground radiator, and a third gap is formed between the second ground radiator and a first branch of the second antenna radiator. The capacitive element is disposed on the third gap and connects the second antenna radiator and the second ground radiator.

Abstract: An antenna structure including a first radiator and a second radiator is provided. The first radiator includes a first segment, a second segment, a third segment, and a fourth segment all bent to be connected in sequence, in which the first segment includes a feed-in terminal. The second radiator includes a fifth segment, and a sixth segment, a seventh segment, an eighth segment, and a ninth segment which are connected respectively to the fifth segment, in which the fifth segment is located beside the first radiator while a first slit is formed between the first radiator and the fifth segment of the second radiator, the sixth segment includes a ground terminal, and the first radiator and the second radiator are adapted to couple to form a first frequency band, a second frequency band, a third frequency band, and a fourth frequency band.

Abstract: An antenna structure including a first radiator and a second radiator is provided. The first radiator includes a first segment, a second segment, a third segment, and a fourth segment all bent to be connected in sequence, in which the first segment includes a feed-in terminal. The second radiator includes a fifth segment, and a sixth segment, a seventh segment, an eighth segment, and a ninth segment which are connected respectively to the fifth segment, in which the fifth segment is located beside the first radiator while a first slit is formed between the first radiator and the fifth segment of the second radiator, the sixth segment includes a ground terminal, and the first radiator and the second radiator are adapted to couple to form a first frequency band, a second frequency band, a third frequency band, and a fourth frequency band.

Abstract: An antenna system includes an antenna array, a wireless transceiver module and a control module. The antenna array includes a first antenna and a second antenna coupled respectively to the wireless transceiver module. The wireless transceiver module sends and receives signals via the first antenna based on a first phase and sends and receives signals via the second antenna based on a second phase. The control module coupled to the wireless transceiver module, and controls the phase difference between the first phase and the second phase. The radiation pattern of the antenna array is modulated towards one pointing direction based on the phase difference.

Abstract: A patch antenna includes a grounding portion and a radiating portion. The radiating portion includes a first feeding point, a first grounding point, a second feeding point, and a second grounding point. The first feeding point is electrically connected to a first signal source. The first grounding point is electrically connected to the grounding portion. The second feeding point is electrically connected to a second signal source. The second grounding point electrically connected to the grounding portion. The line formed by connecting the first feeding point and the first grounding point is substantially perpendicular to the line formed by connecting the second feeding point and the second grounding point.

Abstract: A dual band printed antenna that includes a metal substrate, an electrically isolated supporting element and a monopole antenna element. The metal substrate includes a slot. A side of the isolated supporting element is formed on the metal substrate. The monopole antenna element is formed on the other side of the isolated supporting element and corresponding to the position of the slot. The monopole antenna element includes a radiation part that includes a feed point and a ground part separated from the radiation part for a distance. The radiation part resonates with the slot to generate a radiation pattern of a first frequency band. The radiation part resonates itself to generate a radiation pattern of a second frequency band.

Abstract: A dual band printed antenna that includes a metal substrate, an electrically isolated supporting element and a monopole antenna element. The metal substrate includes a slot. A side of the isolated supporting element is formed on the metal substrate. The monopole antenna element is formed on the other side of the isolated supporting element and corresponding to the position of the slot. The monopole antenna element includes a radiation part that includes a feed point and a ground part separated from the radiation part for a distance. The radiation part resonates with the slot to generate a radiation pattern of a first frequency band. The radiation part resonates itself to generate a radiation pattern of a second frequency band.

Abstract: An antenna system includes an antenna array, a wireless transceiver module and a control module. The antenna array includes a first antenna and a second antenna coupled respectively to the wireless transceiver module. The wireless transceiver module sends and receives signals via the first antenna based on a first phase and sends and receives signals via the second antenna based on a second phase. The control module coupled to the wireless transceiver module, and controls the phase difference between the first phase and the second phase. The radiation pattern of the antenna array is modulated towards one pointing direction based on the phase difference.

Abstract: A patch antenna includes a grounding portion and a radiating portion. The radiating portion includes a first feeding point, a first grounding point, a second feeding point, and a second grounding point. The first feeding point is electrically connected to a first signal source. The first grounding point is electrically connected to the grounding portion. The second feeding point is electrically connected to a second signal source. The second grounding point electrically connected to the grounding portion. The line formed by connecting the first feeding point and the first grounding point is substantially perpendicular to the line formed by connecting the second feeding point and the second grounding point.

Abstract: A counterfeit money detector with front hood comprising a C-shaped body with an open hole on front, a transparent hood covering the open hole, a cover plate on the transparent hood, a 1st infrared transmitter is on the inner bottom of the C-shaped body to transmit IR signals, a 1st infrared receiver is on the inner top of the C-shaped body to receive IR signals from the 1st infrared transmitter. When the cover plate blocks the IR signals, the 1st infrared receiver will generate a control signal out to an activating circuitry, an ultraviolet lamp installed on the inner top of the C-shaped body and connected to the activating circuitry. When the IR signals are blocked, the ultraviolet lamp is turned on by the activating circuitry; otherwise the ultraviolet lamp remains off.

Abstract: A counterfeit money detector with front hood comprising a C-shaped body with an open hole on front, a transparent hood covering the open hole, a cover plate on the transparent hood, a 1st infrared transmitter is on the inner bottom of the C-shaped body to transmit IR signals, a 1st infrared receiver is on the inner top of the C-shaped body to receive IR signals from the 1st infrared transmitter. When the cover plate blocks the IR signals, the 1st infrared receiver will generate a control signal out to an activating circuitry, an ultraviolet lamp installed on the inner top of the C-shaped body and connected to the activating circuitry. When the IR signals are blocked, the ultraviolet lamp is turned on by the activating circuitry; otherwise the ultraviolet lamp remains off.