Enhanced feedback signal routing designs and methods for enhanced transceiver performance

The transceiver design optimizes feedback routing between multiple chains, addressing inefficiencies in existing systems by enhancing signal integrity and reducing power consumption through intra-chain and inter-chain feedback paths.

WO2026135895A1PCT designated stage Publication Date: 2026-06-25QUALCOMM INC
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
QUALCOMM INC
Filing Date
2025-11-17
Publication Date
2026-06-25

AI Technical Summary

Technical Problem

Existing wireless communication networks face challenges in efficiently supporting multi-path configurations and operating modes while providing feedback or loopback paths for digital pre-distortion, particularly in transceivers with multiple transmit and receive chains, where intra-chain routing improves performance but inter-chain routing is more compatible with advanced architectures, leading to component duplication and increased power consumption.

Method used

A transceiver design that includes feedback routing circuitry and DPD circuitry, allowing feedback signals to be routed between different receive chains via intra-chain and inter-chain paths, optimizing signal integrity and reducing component duplication.

Benefits of technology

Enhances transceiver performance by optimizing feedback routing, improving signal integrity and reducing power consumption, while supporting advanced transceiver architectures.

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Abstract

This disclosure provides systems, methods, and devices for wireless communications that support enhanced feedback routing operations, such as enhanced digital pre-distortion operations. In a first aspect, a transceiver includes a first transmit chain including a power amplifier and a first receive chain including a first mixer and a first baseband filter. The transceiver also includes a second receive chain having a second baseband filter, and includes feedback circuitry coupled to the power amplifier of the first transmit chain and to the first mixer of the first receive chain and configured to output a feedback signal to the first mixer. The transceiver further includes feedback routing circuitry coupled to the first baseband filter and to the second baseband filter and configured to provide the feedback signal received from the first mixer to the first baseband filter or to the second baseband filter. Other aspects and features are also claimed and described.
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