Abstract: Designs and techniques for manufacturing microelectronic antenna tuners are provided. An example microelectronic antenna system includes a radio frequency integrated circuit comprising a plurality of radio frequency signal ports disposed in a first area, a plurality of tuning devices disposed in a second area of the radio frequency integrated circuit, at least one antenna element disposed on a substrate coupled to the radio frequency integrated circuit, and at least one feedline disposed in the substrate and configured to communicatively couple the at least one antenna element, at least one of the plurality of tuning devices, and one of the plurality of radio frequency signal ports.

Abstract: An RF flip chip is provided in which a local bump region adjacent a die corner includes a balun having a centrally-located bump.

Abstract: A method of wireless communication includes receiving a first beam using a first antenna device during an occasion of a reference signal. The method further includes receiving a second beam using a second antenna device that is distinct from the first antenna device during the occasion of the reference signal. Receiving the first beam and the second beam includes inputting, to a modem, a representation of a combination of the first beam and the second beam. Receiving the first beam and the second beam further includes generating, by the modem based on the representation, a first signal associated with the first beam using a first parameter associated with the first antenna device and a second signal associated with the second beam using a second parameter associated with the second antenna device.

Abstract: In certain aspects, a method includes receiving a first intermediate frequency (IF) signal and a second IF signal via a common input, upconverting the first IF signal into a first radio frequency (RF) signal, transmitting the first RF signal via a first antenna array, upconverting the second IF signal into a second RF signal, and transmitting the second RF signal via a second antenna array. In a first transit mode, the first RF signal is in a first frequency band and the second RF signal is in a second frequency band, and, in a second transmit mode, the first RF signal and the second RF signal are both in the first frequency band.

Abstract: Aspects of the present relate to reflection type phase shifters for radio frequency (RF) wireless devices. Reflection type phase structures in accordance with aspects described herein can improve device performance with compact configurations, such as where magnetic and capacitive coupling is integrated into a device design to integrate interactions between elements for improved phase shifting performance in a compact design with wideband performance.

Abstract: Certain aspects of the present disclosure provide an amplifier. The amplifier generally includes an amplifier core circuit configured to amplify a radio frequency signal and having a first output and a second output; a transformer coupled to the amplifier core circuit, the transformer having a primary winding and a secondary winding, the primary winding being coupled to the first output and the second output of the amplifier core circuit, the secondary winding being coupled to an output node of the amplifier; and a variable resistance circuit coupled in parallel with the primary winding.

Abstract: In certain aspects, a method is provided for measuring power using a resistive element coupled between a power amplifier and an antenna. The method includes squaring a voltage from a first terminal of the resistive element to obtain a first signal, squaring a voltage from a second terminal of the resistive element to obtain a second signal, and generating a measurement signal based on a difference between the first signal and the second signal. In some implementations, the resistive element is implemented with a power switch.

Abstract: In certain aspects, a chip includes a pad, and a power amplifier having a first output and a second output. The chip also includes a transformer, wherein the transformer includes a first inductor coupled between a first terminal and a second terminal of the transformer, wherein the first terminal is coupled to the first output of the power amplifier, and the second terminal is coupled to the second output of the power amplifier. The transformer also includes a second inductor coupled between a third terminal and a fourth terminal of the transformer, wherein the third terminal is coupled to the pad. The chip also includes a first switch coupled to the fourth terminal, a shunt inductor coupled in parallel with the first switch, and a low-noise amplifier coupled to the third terminal.

Abstract: In certain aspects, a method is provided for measuring power using a resistive element coupled between a power amplifier and an antenna. The method includes squaring a voltage from a first terminal of the resistive element to obtain a first signal, squaring a voltage from a second terminal of the resistive element to obtain a second signal, and generating a measurement signal based on a difference between the first signal and the second signal. In some implementations, the resistive element is implemented with a power switch.

Abstract: According to certain aspects, a chip includes a pad, a power amplifier, a transformer coupled between an output of the power amplifier and the pad, a transistor coupled between the transformer and a ground, and a first clamp circuit coupled between a gate of the transistor and a drain of the transistor.

Abstract: A method of wireless communication includes receiving a first beam using a first antenna device during an occasion of a reference signal. The method further includes receiving a second beam using a second antenna device that is distinct from the first antenna device during the occasion of the reference signal. Receiving the first beam and the second beam includes inputting, to a modem, a representation of a combination of the first beam and the second beam. Receiving the first beam and the second beam further includes generating, by the modem based on the representation, a first signal associated with the first beam using a first parameter associated with the first antenna device and a second signal associated with the second beam using a second parameter associated with the second antenna device.

Abstract: Aspects of the present relate to reflection type phase shifters for radio frequency (RF) wireless devices. Reflection type phase structures in accordance with aspects described herein can improve device performance with compact configurations, such as where magnetic and capacitive coupling is integrated into a device design to integrate interactions between elements for improved phase shifting performance in a compact design with wideband performance.

Abstract: Designs and techniques for manufacturing microelectronic antenna tuners are provided. An example microelectronic antenna system includes a radio frequency integrated circuit comprising a plurality of radio frequency signal ports disposed in a first area, a plurality of tuning devices disposed in a second area of the radio frequency integrated circuit, at least one antenna element disposed on a substrate coupled to the radio frequency integrated circuit, and at least one feedline disposed in the substrate and configured to communicatively couple the at least one antenna element, at least one of the plurality of tuning devices, and one of the plurality of radio frequency signal ports.

Abstract: A transceiver interface for a phased array element includes a first magnetic circuit having a primary coil and a secondary coil, a second magnetic circuit having a primary coil, a secondary coil and a tertiary coil, a main amplifier path and an auxiliary amplifier path, the main amplifier path coupled to the primary coil of the second magnetic circuit and configured to receive a quadrature signal, the main amplifier path configured to provide a quadrature output signal, the auxiliary amplifier path coupled to the primary coil of the first magnetic circuit and configured to receive an in-phase signal, the auxiliary amplifier path configured to provide an in-phase output signal, a selectable output circuit configured to selectively combine the in-phase output signal and the quadrature output signal, and a low noise amplifier (LNA) coupled to the tertiary coil of the second magnetic circuit.

Abstract: In certain aspects, an apparatus includes a power detector coupled between a power amplifier and an antenna, and a voltage detector coupled between the power amplifier and the antenna. The apparatus also includes a phase shifter coupled to the power detector, and a load measurement circuit coupled to the power detector, the voltage detector, and the phase shifter.

Abstract: Devices and methods for detection of active return loss for an antenna element of a plurality of antenna elements of a phased array antenna are provided. An exemplary device can convert a voltage differential at an input of a power amplifier (PA) to first current. The device can convert a coupled voltage corresponding to a signal transmitted from the PA to a respective antenna element, to a second current. The device can convert a reflected voltage corresponding to a signal reflected from the respective antenna element, to a third current. The device can convert the first current, the second current, and the third current to an output voltage at a generator output. The device can further have a controller that can adaptively generate codebooks for transmission based on the output voltage.

Abstract: In certain aspects, a method includes receiving a first intermediate frequency (IF) signal and a second IF signal via a common input, upconverting the first IF signal into a first radio frequency (RF) signal, transmitting the first RF signal via a first antenna array, upconverting the second IF signal into a second RF signal, and transmitting the second RF signal via a second antenna array. In a first transit mode, the first RF signal is in a first frequency band and the second RF signal is in a second frequency band, and, in a second transmit mode, the first RF signal and the second RF signal are both in the first frequency band.

Abstract: A transceiver interface circuit, comprising a driver amplifier (DA), a load line impedance modulation circuit coupled to the DA; and multiple selectable output ports coupled to the load line impedance modulation circuit, an impedance presented by the load line impedance modulation circuit being adjustable dependent on at least a number of output ports coupled to the load line impedance modulation circuit.

Abstract: A peak detector for a power amplifier is provided that includes a threshold voltage detector configured to pulse a detection current in response to an amplified output signal from the amplifier exceeding a peak threshold. A plurality of such peak detectors may be integrated with a corresponding plurality of power amplifiers in a transmitter. Should any peak detector assert an alarm signal or more than a threshold number of alarm signals during a given period, a controller reduces a gain for the plurality of power amplifiers.

Abstract: An apparatus is disclosed for controlling a power amplifier that is coupled to an antenna element of an antenna array. In example implementations, an apparatus includes an antenna element of an antenna array and a power amplification system. The power amplification system includes at least one input node, at least one output node coupled to the antenna element, and at least one power amplifier branch coupled between the at least one input node and the at least one output node. The power amplification system also includes at least one feedback node coupled to the at least one output node, at least one control node, and a feedback control loop coupled between the at least one feedback node and the at least one control node.