Telefonaktiebolaget Lm Ericsson (publ)

David Gustafsson

Mingquan Bao

Kristoffer Andersson

Per Ingelhag

Christian Fager

Klas Hedberg

Stefan Skoglund

Magnus Ljung

Mariam Jarahnejad

David Möllersten

Alexandra Kenneberg

The present disclosure relates to a balun arrangement () comprising a slot () at least partially having a crossing slot width (ws, hs) running between a first longitudinal side () and a second longitudinal side () in at least a first metallization layer (). The balun arrangement () further comprises an unbalanced first port (P) that is defined between a first connection () to the second side () of the slot () and a fourth connection () to the first side () of the slot () and a balanced second port (P) that is that is defined between a second connection () to the second side () of the slot () and a fifth connection () to the first side () of the slot (). The balun arrangement () also comprises a balanced third port (P) that is defined between a third connection () to the first side () of the slot () and a sixth connection () to the second side () of the slot ().

Wideband balun arrangement

The embodiments herein relate to a power amplifier arrangement () comprising a main amplifier () comprising an output connected to a first terminal () of a primary winding () of a transformer (). A second terminal () of the primary winding () is connected to ground (). The power amplifier arrangement () comprises an auxiliary amplifier () comprising an output connected to a first terminal () of a secondary winding () of the transformer (). A second terminal () of the secondary winding () is connected to a load ().

Power amplifier arrangement

The present disclosure relates to an amplifier arrangement comprising a first amplifier, a second amplifier and an output combiner arranged to combine respective output signals of the first amplifier and the second amplifier into an output signal of the amplifier arrangement. An amplifier arrangement input signal is arranged as input signal to the first amplifier, and a difference signal, representing a difference between the amplifier arrangement input signal and a scaled output signal of the first amplifier, is arranged as input to the second amplifier. The output combiner is arranged to modulate the loads of the first amplifier and the second amplifier in dependence of the output signal of the second amplifier.

Doherty amplifier arrangement

A battery and battery thermal arrangement are provided. The battery comprises one or more battery blocks and a thermal insert configured adjacent to a first battery block or between two battery blocks, including the first battery block and a second battery block, the thermal insert comprising a channel for allowing a thermal medium flowing through the thermal insert, the thermal insert being in physical contact with at least a part of a side of the first battery block when filled with the thermal medium, the thermal insert further comprising an inlet and an outlet connectable to a circulation device for pumping the thermal medium through the thermal insert.

Battery and a battery thermal arrangement

The present disclosure provides a power amplifier comprising a main amplifier and an auxiliary amplifier. The power amplifier is configured to deliver an output power P. A First Efficiency Peak (FEP) is defined as a first efficiency peak in the power ratio Pto P. Pis a maximum power output of the power amplifier and Pdefines a power ratio at the FEP. The main amplifier is configured to be biased by a main amplifier bias Vthat is substantially equal to an auxiliary amplifier bias Vtimes xwith xbeing a main amplifier output current in relation to the maximum current through the main amplifier when Pequals P. The impedances of a load and a main amplifier transmission line are arranged to be substantially equal. A corresponding method and a node in a wireless communication system comprising the power amplifier are also disclosed.

Wideband and reconfigurable Doherty based amplifier

Presented is an apparatus and methods for collecting the implemented data model and version information from an end user device. The apparatus is communicatively connected to the end user device and uses, for example, the Broadband Forum TR-069 protocol or another protocol for communications. The method interrogates the end user device to determine all parameters and their data types by traversing the end user device's data model level by level and instantiating any objects discovered that are instantiable but not yet instantiated. The method archives the data model and end user device version information for later use with like devices.

Growing community of inventors

Gothenburg, Sweden

David Gustafsson