Abstract: A communication device includes a first connector, a first radio frequency unit, a first transmission line and a first antenna. The first radio frequency (RF) unit is connected to the first connector, the first transmission line has a first terminal and a second terminal, the first terminal of the first transmission line is connected to the first connector, and the first antenna is contacted and electrically coupled to the second terminal of the first transmission line. The first RF unit is configured to generate a first RF signal. The first terminal of the first transmission line is configured to receive the first RF signal, and the first transmission line is configured to transmit the first RF signal from the first terminal of the first transmission line to the second terminal of the first transmission line. The first antenna is configured to send the first RF signal.

Abstract: An antenna device includes an antenna element, a sensing circuit, a matching circuit and an impedance adjusting circuit. The sensing element is used to generate a sensing signal. The matching circuit is coupled to the antenna unit. The impedance adjusting circuit is coupled to the sensing circuit and is capable of turning an impedance of the antenna unit and an impedance of the matching circuit into mismatch according to the sensing signal.

Abstract: A communication device includes an antenna unit, an adjustment unit and a sensing and processing unit. The sensing and processing unit is electrically coupled to the antenna unit and the adjustment unit. The antenna unit is configured to transmit a radio frequency (RF) signal. The adjustment unit is configured to adjust a frequency and a bandwidth of the RF signal. The sensing and processing unit is configured to sense a capacitance, so as to control the adjustment unit to adjust the frequency of the RF signal according to the capacitance, and to control the adjustment unit to adjust the bandwidth of the RF signal according to a system signal.

Abstract: A communication device includes a first sensing electrode, a sensing and processing unit, a radio frequency unit, a first antenna and a second antenna. The radio frequency unit, the first antenna and the second antenna are coupled to the sensing and processing unit. The radio frequency unit is configured to generate a radio frequency signal. The first sensing electrode is configured to sense a first capacitance when an object approaches the communication device. The sensing and processing unit is configured to generate a relative position signal of the object and the communication device according to the first capacitance. The sensing and processing unit is further configured to control one of the first antenna and the second antenna to send the radio frequency signal according to the relative position signal.

Abstract: An electronic device includes a display module, an NFC (Near-field Communication) module, a verification module and a control module. The display module is disposed on a first surface of the electronic device. The NFC module includes an antenna unit. The antenna unit is configured to transmit and receive a wireless signal from an outward direction of the first surface. The verification module is disposed on a second surface of the electronic device. The verification module is configured to generate an identification input data according to an operation of a user. The control module is configured to drive the verification module to generate the identification input data when the NFC module receives an identification requirement data, and configured to determine whether the identification input data is valid.

Abstract: A communication device includes an antenna unit, an adjustment unit and a sensing and processing unit. The sensing and processing unit is electrically coupled to the antenna u and the adjustment unit. The antenna unit is configured to transmit a radio frequency (RE) signal. The adjustment unit is configured to adjust a frequency and a bandwidth of the RF signal. The sensing and processing unit is configured to sense a capacitance, so as to control the adjustment unit to adjust the frequency of the RE signal according to the capacitance, and to control the adjustment unit to adjust the bandwidth of the RE signal according to a system signal.

Abstract: A communication device includes an antenna unit, a sensing unit and a radio frequency unit. The antenna unit is configured to send a radio frequency signal. The sensing unit is coupled to a ground terminal through a capacitor and configured to sense a first capacitance through the antenna unit. The radio frequency unit is configured to generate the radio frequency signal, and to adjust energy of the radio frequency signal to a first energy according to the first capacitance. When the energy if the radio frequency signal is the first energy, the sensing unit is configured to sense a second capacitance through the antenna unit. The radio frequency unit is configured to adjust the energy of the radio frequency signal from the first energy to a second energy according to the second capacitance.

Abstract: An electronic device is provided. The electronic device includes a casing, a display module, and a communication module. The casing includes a first surface and a second surface. The display module is disposed on the first surface and has a display region. The communication module includes a first antenna module and a second antenna module. The first antenna module is disposed close to the display module and is corresponding perpendicularly to at least one part of the display region. The second antenna module is disposed close to the second surface. The communication module selectively receives and transmits a wireless signal along an outward direction extending from the first surface via the first antenna module or along an outward direction extending from the second surface via the second antenna module.

Abstract: A communication device is provided. The communication device includes an antenna unit, a sensing unit and a radio frequency unit. The antenna unit is configured to transmit a radio frequency signal. The sensing unit is coupled to a ground terminal through a first capacitor. The sensing unit is configured to sense a capacitance value through the antenna unit. The radio frequency unit is configured to generate the radio frequency signal and to regulate the energy of the radio frequency signal according to the capacitance value.

Abstract: An electronic device includes a display module, an NFC (Near-field Communication) module, a verification module and a control module. The display module is disposed on a first surface of the electronic device. The NFC module includes an antenna unit. The antenna unit is configured to transmit and receive a wireless signal from an outward direction of the first surface. The verification module is disposed on a second surface of the electronic device. The verification module is configured to generate an identification input data according to an operation of a user. The control module is configured to drive the verification module to generate the identification input data when the NFC module receives an identification requirement data, and configured to determine whether the identification input data is valid.

Abstract: An electronic device is provided. The electronic device includes a casing, a display module, and a communication module. The casing includes a first surface and a second surface. The display module is disposed on the first surface and has a display region. The communication module includes a first antenna module and a second antenna module. The first antenna module is disposed close to the display module and is corresponding perpendicularly to at least one part of the display region. The second antenna module is disposed close to the second surface. The communication module selectively receives and transmits a wireless signal along an outward direction extending from the first surface via the first antenna module or along an outward direction extending from the second surface via the second antenna module.

Abstract: An antenna device includes an antenna element, a sensing circuit, a matching circuit and an impedance adjusting circuit. The sensing element is used to generate a sensing signal. The matching circuit is coupled to the antenna unit. The impedance adjusting circuit is coupled to the sensing circuit and is capable of turning an impedance of the antenna unit and an impedance of the matching circuit into mismatch according to the sensing signal.

Abstract: A touch panel includes a substrate, a sensing circuit, a circuit board module and a wireless circuit. The sensing circuit is disposed in a first area on a surface of the substrate and configured to receive a touch signal on the touch panel. The wireless circuit is disposed in a second area on the surface or disposed on a connection part of the circuit board module, and configured to receive/transmit a wireless signal. An electronic apparatus is also provided. A wireless circuit of the electronic apparatus includes a first antenna and a second antenna, which are disposed adjacent to a front side and a back side of the electronic apparatus, respectively. The wireless circuit is configured to receive/transmit a wireless signal selectively in the direction of the front side through the first antenna or in the direction of the back side through the second antenna.