A radio frequency module includes: a module substrate including a first principal surface and a second principal surface opposite to each other; a plurality of external-connection terminals (e.g., a plurality of post electrodes) disposed on the second principal surface; a semiconductor component disposed on the second principal surface and including a first low-noise amplifier and/or a second low-noise amplifier; and a metal member set at a ground potential and covering at least part of a surface of the semiconductor component, the surface being opposite to a surface that faces the module substrate.

Apparatus and methods for radio frequency (RF) switch control are provided. In certain embodiments, a level shifter for an RF switch includes a first level-shifting n-type transistor, a first cascode n-type transistor in series with the first level-shifting n-type transistor between a negative charge pump voltage and a first output that provides a first switch control signal, a first level-shifting p-type transistor, a first cascode p-type transistor in series with the first level-shifting p-type transistor between a positive charge pump voltage and the first output, and a second cascode p-type transistor between a regulated voltage and a gate of the first level-shifting n-type transistor and controlled by a first switch enable signal.

A wireless communication apparatus 20 includes: a first communication unit configured to perform wireless communication that supports a plurality of wireless communication systems with different using frequency bands; a second communication unit configured to perform wired communication that supports a plurality of wired communication systems each with a different basic frequency used in data communication; and a switching unit configured to switch a wired communication system used in the wired communication by the second communication unit so that the basic frequency falls outside a predetermined frequency band including the using frequency bands of the wireless communication by the first communication unit.

An electronic device includes a first antenna configured to process a first radio frequency (RF) signal within a first frequency band; a second antenna spaced apart from the first antenna configured to process a second RF within a second frequency band different from the first frequency band; a first radio frequency front end (RFFE) and a second RFFE configured to process a third RF signal within a third frequency band different from the first frequency band and the second frequency band; a communication processor electrically connected to the first switch and the second switch; and a memory operatively coupled to the communication processor and configured to store performance information having, at least, a first value indicating an efficiency of the first antenna when performing a first radio communication, and a second value indicating an efficiency of the second antenna when performing the first radio communication. The memory is configured to store instructions that, when executed, cause the communication processor to transmit or receive a signal within at least one of the first frequency band, the second frequency band or the third frequency band, and select an antenna to support the first radio communication among the first antenna and the second antenna based on the performance information having the first value or the second value. The first RFFE and the second RFFE support the first radio communication within the third frequency band.

A radio frequency circuit includes: a first filter having a first passband that corresponds to a portion of a frequency range of a first communication band allocated as a communication band for TDD; a second filter having a second passband that corresponds to a portion of the frequency range of the first communication band, the second passband being different from the first passband; a power amplifier that amplifies a transmission signal in the first communication band; a low-noise amplifier that amplifies a reception signal in the first communication band; and a switch that switches between connecting the first filter and the power amplifier and connecting the first filter and the low-noise amplifier, and switches between connecting the second filter and the power amplifier and connecting the second filter and the low-noise amplifier.

A radio frequency module includes: a module board including a first principal surface and a second principal surface on opposite sides; a transmission input terminal; a transmission power amplifier that amplifies a transmission signal input from the transmission input terminal; a switch that switches between connecting and disconnecting the transmission input terminal and the transmission power amplifier, and a control circuit that controls the transmission power amplifier using digital control signals. The switch is disposed on the first principal surface, and the control circuit is disposed on the second principal surface.

A radio frequency module includes a module board; a first semiconductor device containing a first power amplifier and a second power amplifier; and a second semiconductor device containing a first switch, the first switch including a first terminal connected to the first power amplifier and a second terminal connected to the second power amplifier. In the radio frequency module, the first semiconductor device and the second semiconductor device are stacked together and disposed on the module board. An aspect of such a radio frequency module is that it is possible to achieve a compact form factor, although still provide RF transmit and receive capability. The RF module also includes external-connection terminals and a LNA, and the first semiconductor device and the low noise amplifier are disposed on mutually opposite surfaces of the module board.

A method of manufacturing an RF switch includes adding a first mutual inductance portion to a first self-inductance portion of a first transmission line; and adding a second mutual inductance portion to a second self-inductance portion of a second transmission line, wherein values of the first and second mutual inductance portions and values of the first and second self-inductance portions equalize an impedance difference between the first transmission line and the second transmission line.

According to various embodiments, an electronic device may comprise: a housing comprising a front plate, a rear plate facing in the opposite direction to the front plate, and a side surface member surrounding the space between the front plate and the rear plate, the side surface member comprising a first side surface extending in a first direction and having a first length, a second side surface extending in a second direction perpendicular to the first direction and having a second length larger than the first length, a third side surface extending in parallel with the first side surface and having the first length, and a fourth side surface extending in parallel with the second side surface and having the second length; a display arranged between the front plate and the rear plate, at least a partial area of the display being exposed through the front plate, the display comprising a conductive plate; a printed circuit board arranged between the display and the rear plate, the printed circuit hoard comprising at least one conductive layer, the conductive plate and the conductive layer being electrically connected to each other; a first conductive pattern arranged between the printed circuit board and the rear plate; a second conductive pattern arranged between the printed circuit board and the front plate and, when seen from above the front plate, between the first side surface of the side surface member and the conductive plate; and a wireless communication circuit electrically connected to the first conductive pattern and the second conductive pattern and configured to transmit and/or receive a signal having a designated frequency. Various other embodiments may be possible.

Systems, methods, and apparatuses for a virtual transponder utilizing inband telemetry are disclosed. A disclosed method for a virtual transponder utilizing inband telemetry comprises receiving, by a vehicle, encrypted host commands from a host spacecraft operations center (SOC). The method further comprises receiving, by the vehicle via the host SOC, encrypted hosted commands from a hosted payload (HoP) operation center (HOC). Also, the method comprises reconfiguring a payload on the vehicle according to unencrypted host commands and/or unencrypted hosted commands. In addition, the method comprises transmitting payload data to a host receiving antenna and/or a hosted receiving antenna. In addition, the method comprises transmitting, by a host telemetry transmitter on the vehicle, encrypted host telemetry to the host SOC. Further, the method comprises transmitting, by the payload antenna, encrypted hosted telemetry to the HOC.