PAMiF And Two-Stage Switch Layout for Lower RF Power Loss

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Solution Overview

Problem

The integration of newer specifications in wireless communications devices leads to increased power loss and circuit area, resulting in higher costs and performance issues.

Innovation Solution

A wireless communications circuit and device design incorporating a power amplifier with integrated filter (PAMiF) module and a two-stage switch module, which includes multiple switches to efficiently manage signal switching and reduce power loss and circuit area.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If newer specifications are integrated into wireless communications devices, then network services and communication capabilities are improved, but power loss and circuit area significantly increase

Engineering Contradiction:

Improvecommunication capabilitiesVSAvoidpower loss

Core Design Contradiction:

Adaptability or versatilityVSLoss of energy

Solution Approach 1:

The patent combines the power amplifier and filter into a single integrated PAMiF module. This merging of previously separate components reduces the overall circuit area and inter-component signal paths, thereby reducing power loss while maintaining the enhanced communication capabilities required by newer specifications.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent implements a two-stage switch module with multiple switches that segment the signal path management. This segmentation allows for more efficient signal routing and switching operations, reducing unnecessary power consumption in the signal path while supporting multiple communication functions.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If newer specifications are integrated into wireless communications devices, then network services and communication capabilities are improved, but circuit area significantly increase

Engineering Contradiction:

Improvecommunication capabilitiesVSAvoidcircuit area

Core Design Contradiction:

Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

The integration of the filter within the power amplifier module (PAMiF) eliminates the need for separate filter components and their associated mounting space, interconnectors, and shielding. This merging significantly reduces the overall circuit board area while preserving the enhanced communication capabilities needed for newer specifications.

Inventive Principle:

Principle #5Merging (Combining)

3Use of energy by moving object

If larger battery is designed to compensate for increased power loss, then power supply is improved, but costs and device size increase

Engineering Contradiction:

Improvepower supplyVSAvoiddevice size

Core Design Contradiction:

Use of energy by moving objectVSWeight of stationary object

Solution Approach 1:

The patent converts the potential harm of increased power loss into a benefit by implementing the PAMiF module and two-stage switch module that actively reduce power consumption. This approach eliminates the need for larger batteries and associated increases in device size and weight, while still supporting enhanced communication capabilities.

Inventive Principle:

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

Data Source

PatentUS10608604B2Wireless communications circuit and associated wireless communications device with reduced power loss and reduced circuit area

Publication Date: 2020.03.31 MEDIATEK INC

AI summary

A wireless communications circuit and an associated wireless communications device are provided. The wireless communications circuit may include a power amplifier with integrated filter (PAMiF) module and a two-stage switch module, and the two-stage switch module may include a first switch and a second switch. For example, a first port of the first switch is coupled to a filter port of the PAMiF module, and a second port of the first switch at an opposite side to the first port of the first switch is coupled to a first antenna. In addition, a first port of the second switch is coupled to a third port of the first switch at the opposite side to the first port of the first switch, and a second port of the second switch is coupled to a second antenna.