Abstract: An electronic device may include a radio-frequency front end (RFFE) module coupled to antenna(s). The module may have a power amplifier, a transmit switch, a receive switch, low noise amplifiers, and an antenna switch. The transmit switch may be coupled to the antenna switch over transmit paths. The antenna switch may be coupled to the low noise amplifiers over receive paths. Filters on different transmit paths may have passbands overlapping the transmit bands of respective first and second frequency bands. A filter on the receive path may have a passband overlapping the receive bands of the first and second frequency bands. The antenna switch may have multiple throws for concurrently coupling one of the transmit paths and one of the receive paths to the antenna(s). Combining filters and switching in this way may minimize the number of low noise amplifiers and filters on the module without sacrificing performance.

Abstract: In an electronic device, a transmitter and a receiver may each be coupled to one or more antennas to enable the electronic device to both transmit and receive wireless signals. The electronic device may include two or more antennas coupled to a radio frequency front end module that receives different downlink signals on different frequency bands. For example, a switch may couple a first antenna to a first duplexer to support transmitting and/or receiving signals within a first frequency band and a second antenna to a second duplexer to support transmitting and/or receiving signals within a second frequency band. As such, the electronic device may concurrently transmit and/or receive two signals having different frequencies, which may improve downlink throughput and/or support downlink carrier aggregation.

Abstract: An electronic device may include transceivers, radio-frequency front end (RFFE) circuitry, antennas, and a feedback receiver. The RFFE circuitry may include power amplifier (PA) modules that each transmits radio-frequency signals in a corresponding group of frequency bands. The modules may include power amplifiers, a band selection switch, and an antenna selection switch coupled to the band selection switch over a signal path. A radio-frequency coupler may be disposed on the signal path between the band selection switch and the antenna selection switch. A PA module may include a feedback receiver aggregation switch. The aggregation switch may be coupled to the radio-frequency coupler on its PA module and radio-frequency coupler(s) on other PA modules over feedback paths. The aggregation switch may pass coupled signals from the couplers to the feedback receiver for measurement.

Abstract: Techniques for implementing and/or operating a radio frequency system, which includes a logic board that outputs an analog electrical signal indicative of data to be wirelessly transmitted from the radio frequency system and a remote head. The remote head includes an antenna that generates an electromagnetic wave to facilitate wirelessly transmitting the data, an antenna integrated circuit implemented using a first semiconductor manufacturing technique, in which the antenna integrated circuit amplifies the analog electrical signal to generate a first amplified analog electrical signal, and a remote front-end integrated circuit coupled between the antenna integrated circuit and the antenna.

Abstract: An electronic device can include a first group of radio-frequency amplifiers coupled to one or more first antenna(s) disposed at a first end of the device, a second group of radio-frequency amplifiers coupled to one or more second antenna(s) disposed at a second opposing end of the device, a first envelope tracking integrated circuit (ETIC) coupled to the first group of radio-frequency amplifiers, and a second envelope tracking integrated circuit (ETIC) coupled to the second group of radio-frequency amplifiers. The first and second ETICs can be coupled together via a bidirectional input-output voltage path and a feedback voltage path. At least the first ETIC can include a first envelope tracking amplifier, a second envelope tracking amplifier, a voltage converter coupled to an output of the first envelope tracking amplifier, and a feedback controller coupled to an output of the second envelope tracking amplifier and configured to adjust the voltage converter.

Abstract: Techniques for implementing and/or operating a radio frequency system, which includes a logic board that outputs an analog electrical signal indicative of data to be wirelessly transmitted from the radio frequency system and a remote head. The remote head includes an antenna that generates an electromagnetic wave to facilitate wirelessly transmitting the data, an antenna integrated circuit implemented using a first semiconductor manufacturing technique, in which the antenna integrated circuit amplifies the analog electrical signal to generate a first amplified analog electrical signal, and a remote front-end integrated circuit coupled between the antenna integrated circuit and the antenna.

Abstract: Systems, methods, and devices are provided for detecting the presence of an object near an electronic device. A radio frequency (RF) system of an electronic device may include a first circuit that includes one or more transmission paths for transmitting a reference signal external to the electronic device. The RF system may include a second circuit that includes one or more receiving paths for receiving a reflection signal based on the reference signal. The RF system may also include a processor that may instruct the RF system to perform a comparison between the reference signal and the reflection signal, determine whether the object is in proximity based at least in part on whether comparison results exceed a comparison threshold, and decrease power output by the RF system below the comparison threshold.

Abstract: Systems, methods, and devices are provided for detecting the presence of an object near an electronic device. A radio frequency (RF) system of an electronic device may include a first circuit that includes one or more transmission paths for transmitting a reference signal external to the electronic device. The RF system may include a second circuit that includes one or more receiving paths for receiving a reflection signal based on the reference signal. The RF system may also include a processor that may instruct the RF system to perform a comparison between the reference signal and the reflection signal, determine whether the object is in proximity based at least in part on whether comparison results exceed a comparison threshold, and decrease power output by the RF system below the comparison threshold.

Abstract: Systems, methods, and devices are provided for detecting the presence of an object near an electronic device. A radio frequency (RF) system of an electronic device may include a first circuit that includes one or more transmission paths for transmitting a reference signal external to the electronic device. The RF system may include a second circuit that includes one or more receiving paths for receiving a reflection signal based on the reference signal. The RF system may also include a processor that may instruct the RF system to perform a comparison between the reference signal and the reflection signal, determine whether the object is in proximity based at least in part on whether comparison results exceed a comparison threshold, and decrease power output by the RF system below the comparison threshold.

Abstract: Systems, methods, and devices are provided for detecting the presence of an object near an electronic device. A radio frequency (RF) system of an electronic device may include a first circuit that includes one or more transmission paths for transmitting a reference signal external to the electronic device. The RF system may include a second circuit that includes one or more receiving paths for receiving a reflection signal based on the reference signal. The RF system may also include a processor that may instruct the RF system to perform a comparison between the reference signal and the reflection signal, determine whether the object is in proximity based at least in part on whether comparison results exceed a comparison threshold, and decrease power output by the RF system below the comparison threshold.

Abstract: Systems and methods for improving communication reliability of a radio frequency system that includes an antenna integrated circuit, which includes an antenna amplifier unit that outputs a first analog electrical signal that indicates data, a transceiver integrated circuit implemented using a first semiconductor manufacturing technique, in which the transceiver integrated circuit includes a transceiver amplifier unit that outputs a second analog electrical signal that indicates the data, and a driver integrated circuit implemented using a second semiconductor manufacturing technique.

Abstract: An electronic device may be provided with a phased antenna array controlled by phase and magnitude controllers within an integrated circuit. The array may be formed on antenna layers and the integrated circuit may be mounted to transmission line layers of a dielectric substrate. A ground plane may separate the transmission line layers from the antenna layers. A connector may be mounted to the surface of the transmission line layers and may be coupled to the integrated circuit using conductive traces. A passive resonator may be formed in the antenna layers and may include conductive structures that resonate at one-quarter of the effective wavelength of operation of the array to form an open circuit impedance for surface currents generated on the ground plane by the array. This may serve to block the surface currents from scattering at an edge of the ground plane and leaking onto the integrated circuit.

Abstract: Techniques for implementing and/or operating a radio frequency system, which includes a logic board that outputs an analog electrical signal indicative of data to be wirelessly transmitted from the radio frequency system and a remote head. The remote head includes an antenna that generates an electromagnetic wave to facilitate wirelessly transmitting the data, an antenna integrated circuit implemented using a first semiconductor manufacturing technique, in which the antenna integrated circuit amplifies the analog electrical signal to generate a first amplified analog electrical signal, and a remote front-end integrated circuit coupled between the antenna integrated circuit and the antenna.

Abstract: A communication device has multiple antennas in an antenna array, and applies the same input power to each antenna. A controller of the communication device instructs phase shifters to form a first subarray with a first pair of the antennas and a second subarray with a second pair of the antennas. The controller causes the first subarray to generate a first beam and causes the second subarray to generate a second beam, wherein the first beam combines in phase with the second beam to generate a coarse beam. The coarse beam may have increased beam width while exhibiting decreased peak gain loss.

Abstract: Techniques for implementing and/or operating a radio frequency system, which includes a logic board having a transceiver integrated circuit and a remote head coupled to the logic board via a one or more electrical connectors. The remote head includes an antenna circuit board having a pad, an antenna formed on a surface of the antenna circuit board opposite the pad, and a remote head system-in-package. The remote head system-in-package includes a system-in-package circuit board having a pin that interfaces with the pad on the antenna circuit board and an integrated circuit device coupled to a surface of the system-in-package circuit board opposite the pin, in which the integrated circuit device includes one or more amplifier units that each amplifies a corresponding analog electrical signal communicated with the antenna.

Abstract: Techniques for implementing and/or operating a radio frequency system, which includes a logic board that outputs an analog electrical signal indicative of data to be wirelessly transmitted from the radio frequency system and a remote head. The remote head includes an antenna that generates an electromagnetic wave to facilitate wirelessly transmitting the data, an antenna integrated circuit implemented using a first semiconductor manufacturing technique, in which the antenna integrated circuit amplifies the analog electrical signal to generate a first amplified analog electrical signal, and a remote front-end integrated circuit coupled between the antenna integrated circuit and the antenna.

Abstract: Systems, methods, and devices are provided for detecting the presence of an object near an electronic device. A radio frequency (RF) system of an electronic device may include a first circuit that includes one or more transmission paths for transmitting a reference signal external to the electronic device. The RF system may include a second circuit that includes one or more receiving paths for receiving a reflection signal based on the reference signal. The RF system may also include a processor that may instruct the RF system to perform a comparison between the reference signal and the reflection signal, determine whether the object is in proximity based at least in part on whether comparison results exceed a comparison threshold, and decrease power output by the RF system below the comparison threshold.

Abstract: Systems and methods for driving using a radio-frequency integrated circuit to drive one or more front end modules. The front end modules provide signal flexibility to an electronic device. The radio-frequency integrated circuit drives the one or more front end modules via dual-pole, dual-throw switches that enable a pair of radio-frequency chains in the radio-frequency integrated circuit to drive two pairs of radio-frequency chains in each of two connected front end modules.

Abstract: Techniques for implementing and/or operating a radio frequency system, which includes a logic board that outputs an analog electrical signal indicative of data to be wirelessly transmitted from the radio frequency system and a remote head. The remote head includes an antenna that generates an electromagnetic wave to facilitate wirelessly transmitting the data, an antenna integrated circuit implemented using a first semiconductor manufacturing technique, in which the antenna integrated circuit amplifies the analog electrical signal to generate a first amplified analog electrical signal, and a remote front-end integrated circuit coupled between the antenna integrated circuit and the antenna.

Abstract: Techniques for implementing and/or operating a radio frequency system, which includes a logic board having a transceiver integrated circuit and a remote head coupled to the logic board via a one or more electrical connectors. The remote head includes an antenna circuit board having a pad, an antenna formed on a surface of the antenna circuit board opposite the pad, and a remote head system-in-package. The remote head system-in-package includes a system-in-package circuit board having a pin that interfaces with the pad on the antenna circuit board and an integrated circuit device coupled to a surface of the system-in-package circuit board opposite the pin, in which the integrated circuit device includes one or more amplifier units that each amplifies a corresponding analog electrical signal communicated with the antenna.