Antenna device (1) and method for operating same, comprising an antenna (2), wherein the antenna (2) is connected to an electronic device (4) via an antenna cable (3) and high-frequency signals are transmitted via the antenna cable (3) between the electronic device (4) and the antenna (2) and vice versa, characterized in that the antenna device (1) has a control unit (5) and switch units (6, 7) which are controlled by the control unit (5), wherein the switch units (6, 7) are switched between a receiving path (8) and a transmission path (9) between the electronic device (4) and the antenna (2).

Antenna device (1) and method for operating same, comprising an antenna (2), wherein the antenna (2) is connected to an electronic device (4) via an antenna cable (3) and high-frequency signals are transmitted via the antenna cable (3) between the electronic device (4) and the antenna (2) and vice versa, characterized in that the antenna device (1) has a control unit (5) and switch units (6, 7) which are controlled by the control unit (5), wherein the switch units (6, 7) are switched between a receiving path (8) and a transmission path (9) between the electronic device (4) and the antenna (2).

An antenna system includes a ground which is disposed in a housing and has an end side; a first antenna element which includes a first open-end and a feeding point, and is exposed to an outside of the housing on the side of the first open-end; a second antenna element which includes the feeding point and a second open-end, is disposed between the end side and the first antenna element, and is branched from the first antenna element at a branching point, a section between the branching point and the second open-end being disposed in the housing or being covered with the housing and the first antenna element; and a metal plate which includes a portion connected to the ground and an end portion disposed near the first open-end, a portion of the metal plate near to the end portion being exposed to an outside of the housing.

An antenna system includes a ground which is disposed in a housing and has an end side; a first antenna element which includes a first open-end and a feeding point, and is exposed to an outside of the housing on the side of the first open-end; a second antenna element which includes the feeding point and a second open-end, is disposed between the end side and the first antenna element, and is branched from the first antenna element at a branching point, a section between the branching point and the second open-end being disposed in the housing or being covered with the housing and the first antenna element; and a metal plate which includes a portion connected to the ground and an end portion disposed near the first open-end, a portion of the metal plate near to the end portion being exposed to an outside of the housing.

An interface unit of a mobile device coupled to an auxiliary device, the interface unit including: a first plurality of switches configured for power delivery to the auxiliary device; at least one isolation unit coupled to the first plurality of switches, the at least one isolation unit configured to isolate the multiple signals and to prevent disruption of data communication between the mobile device and the auxiliary device; and a second plurality of switches configured for the data communication between the mobile device and the auxiliary device, the second plurality of switches configured to bypass the at least one isolation unit.

Technologies for provided for a radio frequency input/output (RFIO) combiner/splitter. An example combiner/splitter can include an RFIO circuit including a receive path including first and second low noise amplifiers (LNAs), first switches, resistors, and capacitors, each of the first switches being in series with a respective one of the first capacitors and first resistors;

a transmit path including a first power amplifier (PA) including second switches coupled to second resistors and third switches coupled to third resistors, and a second PA including fourth switches coupled to fourth resistors and fifth switches coupled to fifth resistors, each of the second switches, the third switches, the fourth switches, and the fifth switches being in series with one or more respective ones of the second resistors, the third resistors, the fourth resistors, and the fifth resistors; and a balun that couples the Rx and Tx path to an RFIO terminal.

Technologies for provided for a radio frequency input/output (RFIO) combiner/splitter. An example combiner/splitter can include an RFIO circuit including a receive path including first and second low noise amplifiers (LNAs), first switches, resistors, and capacitors, each of the first switches being in series with a respective one of the first capacitors and first resistors;

a transmit path including a first power amplifier (PA) including second switches coupled to second resistors and third switches coupled to third resistors, and a second PA including fourth switches coupled to fourth resistors and fifth switches coupled to fifth resistors, each of the second switches, the third switches, the fourth switches, and the fifth switches being in series with one or more respective ones of the second resistors, the third resistors, the fourth resistors, and the fifth resistors; and a balun that couples the Rx and Tx path to an RFIO terminal.

Methods, systems, and devices for wireless communication are described. A user equipment (UE) may tune an auxiliary receiver within a first radio to a transmission frequency of a co-located second radio. The auxiliary receiver may downconvert a signal from the second radio so that the UE may generate an interference estimate and perform interference cancellation. In some cases, the auxiliary receiver may also be used to perform transmission corrections for transmissions of the first radio. For example, the auxiliary receiver may be used to enable gain control or digital predistortion. The auxiliary receiver may be selectively tuned to the transmission frequency of the first radio or the second radio based on whether the auxiliary receiver is being used to perform interference cancellation or transmission correction.

A radio transceiver circuit for FDD communication is disclosed. It comprises a transmitter for FDD signal transmission in a first frequency band, a first receiver for FDD signal reception in a second frequency band, separate from the first frequency band, and a duplexer. An output port of the transmitter is operatively connected to a first port of the duplexer for transmitting, through the duplexer, signals in said first frequency band. An input port of the first receiver is operatively connected to a second port of the duplexer for receiving, through the duplexer, signals in said second frequency band. The radio transceiver circuit comprises a second receiver, separate from the first receiver, for reception in said first frequency band. An input port of the second receiver is operatively connected to said first port of the duplexer for receiving, through the duplexer, signals in said first frequency band. A related radio communication apparatus is also disclosed.

A radio transceiver circuit for FDD communication is disclosed. It comprises a transmitter for FDD signal transmission in a first frequency band, a first receiver for FDD signal reception in a second frequency band, separate from the first frequency band, and a duplexer. An output port of the transmitter is operatively connected to a first port of the duplexer for transmitting, through the duplexer, signals in said first frequency band. An input port of the first receiver is operatively connected to a second port of the duplexer for receiving, through the duplexer, signals in said second frequency band. The radio transceiver circuit comprises a second receiver, separate from the first receiver, for reception in said first frequency band. An input port of the second receiver is operatively connected to said first port of the duplexer for receiving, through the duplexer, signals in said first frequency band. A related radio communication apparatus is also disclosed.