Abstract: An electronic display device includes a frame assembly, a first antenna, a display module, and a metal grounding member. The frame assembly includes a housing body, and the housing body includes an inner side surface, an outer side surface corresponding to the inner side surface, and a groove running through the outer side surface and the inner side surface. The first antenna is disposed on the inner side surface of the housing body, and the first antenna includes a grounding portion. The display module is disposed on the outer side surface of the housing body. The metal grounding member is disposed on the outer side surface of the housing body, and the metal grounding member is disposed between the housing body and the display module. The metal grounding member is coupled to the grounding portion of the first antenna through the groove.

Abstract: A communication device includes a ground element, an antenna structure, a first reflector, a second reflector, a first tuning element, and a switch element. The first reflector is disposed adjacent to the antenna structure. The second reflector is disposed adjacent to the antenna structure. The second reflector is separate from the first reflector. The switch element is coupled to the first tuning element. When the switch element is enabled, the switch element couples the first tuning element to the first reflector or the second reflector. When the switch element is disabled, the first tuning element is separate from the first reflector and the second reflector.

Abstract: An electronic display device includes a frame assembly, a first antenna, a display module, and a metal grounding member. The frame assembly includes a housing body, and the housing body includes an inner side surface, an outer side surface corresponding to the inner side surface, and a groove running through the outer side surface and the inner side surface. The first antenna is disposed on the inner side surface of the housing body, and the first antenna includes a grounding portion. The display module is disposed on the outer side surface of the housing body. The metal grounding member is disposed on the outer side surface of the housing body, and the metal grounding member is disposed between the housing body and the display module. The metal grounding member is coupled to the grounding portion of the first antenna through the groove.

Abstract: A communication device includes a ground element, an antenna structure, a first reflector, a second reflector, a first tuning element, and a switch element. The first reflector is disposed adjacent to the antenna structure. The second reflector is disposed adjacent to the antenna structure. The second reflector is separate from the first reflector. The switch element is coupled to the first tuning element. When the switch element is enabled, the switch element couples the first tuning element to the first reflector or the second reflector. When the switch element is disabled, the first tuning element is separate from the first reflector and the second reflector.

Abstract: An antenna system includes at least a first tunable antenna. The first tunable antenna includes a first radiation element, a second radiation element, a transmission line, and a switch circuit. The transmission line includes a first segment, a second segment, and a phase-adjustment segment. The first radiation element is coupled through the first segment to a first feeding point. The second radiation element is coupled through the second segment to a second feeding point. The switch circuit is configured to switch between the first feeding point and the second feeding point, so that the first feeding point or the second feeding point is arranged for receiving a feeding signal. The phase-adjustment segment has a first end and a second end. The first feeding point is positioned at the first end of the phase-adjustment segment. The second feeding point is positioned at the second end of the phase-adjustment segment.

Abstract: An antenna system includes at least a first tunable antenna. The first tunable antenna includes a first radiation element, a second radiation element, a transmission line, and a switch circuit. The transmission line includes a first segment, a second segment, and a phase-adjustment segment. The first radiation element is coupled through the first segment to a first feeding point. The second radiation element is coupled through the second segment to a second feeding point. The switch circuit is configured to switch between the first feeding point and the second feeding point, so that the first feeding point or the second feeding point is arranged for receiving a feeding signal. The phase-adjustment segment has a first end and a second end. The first feeding point is positioned at the first end of the phase-adjustment segment. The second feeding point is positioned at the second end of the phase-adjustment segment.

Abstract: A wireless communication device includes a diversity antenna operating in a receiving frequency band to receive a receiving signal in the reception frequency band, a tunable matching circuit for adjusting a matching of the diversity antenna according to a control signal, a detection circuit for detecting a wireless communication system corresponding to the receiving signal to generate a detection result, wherein the detection result indicates an antenna configuration and a transmission frequency band corresponding to the wireless communication system, and a radio-frequency processing circuit for determining whether to adjust the matching of the diversity antenna to weaken antenna performance of the diversity antenna in both or one of the transmission frequency band and the reception frequency band according to the antenna configuration so as to improve an isolation between the diversity antenna and a main antenna.

Abstract: A wireless communication device includes an antenna for receiving a receiving signal and including a radiator whose input impedance is inductively centralized, a tunable matching circuit coupled to the antenna for adjusting a matching of the antenna according to a control signal, and a radio-frequency processing circuit coupled to the tunable matching circuit, for determining whether to adjust the matching of the antenna according to a receiving band and a transmitting band corresponding to the receiving signal to generate the control signal to the tunable matching circuit, wherein the tunable matching circuit adjusts the matching of the antenna to optimize the matching of the antenna in the receiving band and the transmitting band.

Abstract: A wireless communication device includes an antenna for receiving a receiving signal and including a radiator whose input impedance is inductively centralized, a tunable matching circuit coupled to the antenna for adjusting a matching of the antenna according to a control signal, and a radio-frequency processing circuit coupled to the tunable matching circuit, for determining whether to adjust the matching of the antenna according to a receiving band and a transmitting band corresponding to the receiving signal to generate the control signal to the tunable matching circuit, wherein the tunable matching circuit adjusts the matching of the antenna to optimize the matching of the antenna in the receiving band and the transmitting band.

Abstract: A wireless communication device includes a diversity antenna operating in a receiving frequency band to receive a receiving signal in the reception frequency band, a tunable matching circuit for adjusting a matching of the diversity antenna according to a control signal, a detection circuit for detecting a wireless communication system corresponding to the receiving signal to generate a detection result, wherein the detection result indicates an antenna configuration and a transmission frequency band corresponding to the wireless communication system, and a radio-frequency processing circuit for determining whether to adjust the matching of the diversity antenna to weaken antenna performance of the diversity antenna in both or one of the transmission frequency band and the reception frequency band according to the antenna configuration so as to improve an isolation between the diversity antenna and a main antenna.