Beammwave Ab

Telefonaktiebolaget Lm Ericsson (publ)

St-ericsson Sa

Jonas Lindstrand

Bengt Lindoff

Per-Olof Magnus Brandt

Henrik Sjöland

Carl Bryant

Stefan Svedberg

Henrik SJÖLAND

A multi-antenna transceiver system is disclosed. The system comprises a group of transceiver chips, wherein each transceiver chip has a respective chip-associated (e.g., on-chip) frequency generator configured to provide a respective conversion frequency, and wherein each transceiver chip is configured to use the respective conversion frequency for on-chip frequency conversion of a transceiver signal. The system also comprises a controller adapted to cause configuration of the respective chip-associated frequency generator of at least one of the transceiver chips, wherein the configuration comprises dynamically setting the respective conversion frequency. In some embodiments, the controller comprises a single piece of circuitry separate from the transceiver chips. The single piece of circuitry is adapted to cause configuration of the respective chip-associated frequency generator of two or more of the transceiver chips.

Multi-antenna transceiver system for multi-band operation

A digital pre-processing chip is disclosed. The digital pre-processing chip comprises an analog interface for transmitting and receiving analog signals to and from a plurality of analog Radio Frequency (RF) chips, and a digital interface for transmitting and receiving digital signals to and from a baseband chip. The digital pre-processing chip further comprises a plurality of Analog-to-Digital Converters (ADCs) for converting a plurality of analog signals received via the analog interface to a plurality of RX digital signals, and a plurality of Digital-to-Analog Converters (DACs) for converting a plurality of TX digital signals to a plurality of analog signals to be transmitted to the plurality of analog RF chips via the analog interface. The digital pre-processing chip further comprises pre-processing circuitry configured to pre-process the plurality of RX digital signals received from the plurality of ADCs to form a pre-processed digital signal to be transmitted to the baseband chip via the digital interface. The pre-processing circuitry is further configured to pre-process a digital signal received via the digital interface to form the plurality of TX digital signals to be transmitted to the plurality of DACs.

Digital pre-processing chip for mmWAVE transceiver architectures

A multi-antenna transceiver system including a group of transceiver chips, and a reference frequency generator configured to provide a reference frequency for each transceiver chip. Each transceiver chip has a respective chip-associated (e.g., on-chip) frequency generator configured to provide a respective conversion frequency based on the reference frequency, wherein each respective conversion frequency is higher than the reference frequency. Each transceiver chip is configured to use the respective conversion frequency for on-chip frequency conversion of a transceiver signal. The reference frequency may be provided directly to each transceiver chip of the group or may be provided directly to a first transceiver chip of the group and to a second transceiver chip of the group via the first transceiver chip. The multi-antenna transceiver system may also include baseband processing circuitry configured to process transceiver signals for the transceiver chips, wherein the baseband processing circuitry may be further configured to estimate a first respective phase shift of each respective chip-associated frequency generator, and compensate the transceiver signals based on the first respective phase shifts.

Frequency generation of a multi-antenna transceiver system

A transceiver front-end for a communication device is connectable at a signal transmission and reception arrangement node to a signal transmission and reception arrangement adapted to transmit a transmit signal having a transmit frequency and to receive a receive signal having a receive frequency. The transceiver front-end is also connectable at a transmitter node to a transmitter adapted to produce the transmit signal and at a receiver node to a receiver adapted to process the receive signal. The transceiver front-end comprises a transformer, wherein the transmitter node is connected to a first node of a first side of the transformer, the receiver node is connected to a first node of a second side of the transformer, and the signal transmission and reception arrangement node is connected to a second node of the first side of the transformer and to a second node of the second side of the transformer. The transceiver front-end also comprises a first tunable capacitance connected between the transmitter node and the receiver node, and a second tunable capacitance connected between the signal transmission and reception arrangement node and a signal reference level. Corresponding transceiver, communication device and method are also disclosed.

Transceiver front-end

A power amplifier circuit utilizes a cross-coupled tapped cascade topology together with a technique of applying an RF injection current into a wideband node to provide a single-stage power amplifier with improved PAE, output power, and gain over a wide RF band. The amplifier circuit comprises a cross-coupled cascade transistor unit comprising a pair of cross-coupled cascode transistors, a cross-coupled switching transistor unit comprising a pair of cross-coupled switching transistors, and an RF current generator. RF current generator generates a differential RF injection current, while switching transistor unit amplifies the injection current to generate an amplified injection current at the wideband node of the amplifier circuit and the cascode transistor unit further amplifies the injection current to generate the desired amplified signal at the output of the amplifier circuit. The output signal amplitude generally depends on the differential injection current and the supply voltage Vapplied to the power amplifier circuit.

Growing community of inventors

Lund, Sweden

Jonas Lindstrand