POWER AMPLIFIER ARRANGEMENT

DE602019086334T2Active Publication Date: 2026-07-08TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
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Patent Information

Application Number
DE602019086334
Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
Filing Date
2019-03-13
Publication Date
2026-07-08
Estimated Expiration
2039-03-13

AI Technical Summary

Technical Problem

Transformer-based Doherty power amplifiers face issues with high losses and large chip area due to the use of baluns and additional transformers, which degrade gain and efficiency in millimeter-wave frequencies.

Method used

A Doherty power amplifier arrangement utilizing a single transformer with opposite-direction current flow through its windings, eliminating the need for a balun and using a power divider to drive the main and auxiliary amplifiers separately, reducing losses and chip size.

Benefits of technology

This configuration achieves reduced loss, smaller chip area, increased output power, and improved efficiency by eliminating the need for a balun and minimizing losses associated with additional transformers.

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