Antenna Rx Chain Control for Tx Leakage and Power Reduction

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Solution Overview

Problem

In electronic devices with multiple antennas, transmission signals can leak into reception chains, leading to increased current consumption and signal processing deterioration, which existing technologies have not adequately addressed.

Innovation Solution

The electronic device includes a transceiver with controlled configurations of reception chains based on the strength of transmission signals, adjusting power and circuit driving to minimize current consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the Rx chains process leaked Tx signals with high strength to prevent signal processing deterioration, then signal processing performance is maintained, but current consumption increases

Engineering Contradiction:

Improvesignal processing performanceVSAvoidcurrent consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent implements dynamic configuration of Rx chain circuits based on real-time assessment of leaked Tx signal strength. The system selectively activates or deactivates specific circuits (such as LNA, mixer, ADC) in the Rx chain depending on whether the leaked signal exceeds a threshold, transitioning from static to dynamic operation to optimize the trade-off between signal processing reliability and power consumption.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes operational parameters of the Rx chain by adjusting which circuits are active based on the strength of leaked Tx signals. When leaked signal strength is below a threshold, certain circuits are deactivated or operated at reduced gain, effectively changing the operational state of the system to reduce current consumption while maintaining adequate signal processing capability.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If multiple antennas are used to support various wireless communication systems, then communication capability is enhanced, but transmission signals may leak into reception chains causing interference

Engineering Contradiction:

Improvecommunication capabilityVSAvoidsignal leakage

Core Design Contradiction:

Adaptability or versatilityVSObject-generated harmful factors

Solution Approach 1:

The patent converts the harmful effect of signal leakage into a useful indicator. Instead of treating leaked Tx signals purely as interference to be eliminated, the system uses the presence and strength of these leaked signals as feedback to dynamically control Rx chain configuration. This transforms a harmful phenomenon into a beneficial control mechanism that automatically adjusts system operation to prevent both signal processing deterioration and unnecessary power consumption.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Data Source

PatentUS12476666B2Electronic device including antenna modules and operation method thereof

Publication Date: 2025.11.18 SAMSUNG ELECTRONICS CO LTD

AI summary

An electronic device may include a transceiver, a communication circuit, at least one antenna circuit, a processor, and a memory. The transceiver may include at least one transmission (Tx) chain and at least one reception (Rx) chain. The communication circuit may include a plurality of front ends electrically connected to the transceiver. The at least one antenna circuit may be connected to the plurality of front ends, respectively. The processor may be operatively connected to the communication circuit. The processor is configured to change the power and/or circuit driving of the at least one reception (Rx) chain on the basis of the strength of an output signal of the at least one transmission chain.