Abstract: A service identifying and processing method using a wireless terminal message according to an exemplary embodiment of the present invention includes (a) receiving a wireless terminal message by a first entity which is a mobile device; and (b) expressing, by a first agent which is an information processing application program installed on the first entity, entity information of second entity based on the wireless terminal message and service confirmation information related to service provided by the second entity, through an application screen by the first agent.

Abstract: A radio frequency (RF) switch device includes a printed circuit board (PCB) having a first side and a second side opposite the first side, at least one pole connection on each of the first side and the second side of the PCB, and at least one throw connection on each of the first side and the second side of the PCB. The RF switch device further includes a first switch integrated circuit (IC) including at least one first switching element for selectively connecting the at least one pole connection and the at least one throw connection on the first side of the PCB, and a second switch IC including at least one second switching element for selectively connecting the at least one pole connection and the at least one throw connection on the second side of the PCB.

Abstract: An antenna switch includes antenna ports configured to be connected to at least one antenna, and throws connected to a power amplifier duplexer. The throws are adapted to be variably connected to any of the antenna ports so that a device that includes the antenna switch can include multiple configurations.

Abstract: A radio-frequency (RF) switch comprises first and second heterojunction bipolar transistors (HBTs) that control transmission of an RF input signal between an input terminal and an output terminal. In some embodiments, the RF input signal is transmitted from the input terminal to the output terminal where the first and second HBTs are turned ON, and otherwise the RF input signal is not transmitted from the input terminal to the output terminal.

Abstract: A device includes: a power amplifier, including a supply voltage terminal, an input port and an output port, and the power amplifier being configured to receive a supply voltage at the supply voltage terminal, an input signal through the input port, to amplify the received input signal, and to output an amplified output signal through the output port; a variable impedance matching circuit having an input terminal connected to the output port of the power amplifier, and having an output terminal for being connected to a load; and a controller including a voltage measuring unit configured to measure the supply voltage, to compare the measured supply voltage with a threshold voltage, and to control the variable impedance matching circuit based on a result of the comparison so as to adjust a load impedance seen by the power amplifier at its output port.