Reconfigurable Amplifier Compensation Across Wideband and Narrowband Modes

Solution Overview

Problem

Current wireless communication systems face challenges in efficiently processing signals across various frequency bands due to operational instability and reduced efficiency in high-frequency bands, particularly when using Miller compensation methods, which increase current consumption and reduce gain in high-frequency bands.

Innovation Solution

A reconfigurable amplifier that adjusts its compensation method based on the operating mode by using a gain circuit with a feed forward path and control circuit, allowing for feed forward compensation in wideband mode and Miller compensation in narrowband mode, while maintaining stability across different frequency bands.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If Miller compensation method is used, then stability is improved, but current consumption increases and gain decreases in high-frequency bands

Engineering Contradiction:

ImprovestabilityVSAvoidcurrent consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent implements a reconfigurable amplifier that dynamically switches between Miller compensation and feed-forward compensation methods based on the operating frequency band. A control circuit selectively activates the feed-forward compensation path for wideband modes and the Miller compensation path for narrowband modes, enabling adaptive optimization of current consumption and gain characteristics according to the specific operating conditions.

Inventive Principle:

Principle #15Dynamics

2Reliability

If Miller compensation method is used, then stability is improved, but gain in high-frequency bands is reduced

Engineering Contradiction:

ImprovestabilityVSAvoidgain

Core Design Contradiction:

ReliabilityVSPower

Solution Approach 1:

The patent implements a reconfigurable amplifier that dynamically switches between Miller compensation and feed-forward compensation methods based on the operating frequency band. A control circuit selectively activates the feed-forward compensation path for wideband modes and the Miller compensation path for narrowband modes, enabling adaptive optimization of current consumption and gain characteristics according to the specific operating conditions.

Inventive Principle:

Principle #15Dynamics

3Device complexity

If a single compensation method is used, then circuit complexity is reduced, but adaptability to different frequency bands is limited

Engineering Contradiction:

Improvecircuit complexityVSAvoidadaptability to different frequency bands

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent designs a reconfigurable amplifier that integrates multiple compensation methods (Miller compensation and feed-forward compensation) within a single circuit architecture. The control circuit selectively activates different compensation paths based on the operating frequency band, enabling the amplifier to adaptively optimize performance across wideband and narrowband modes without requiring separate dedicated circuits for each mode.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS9912311B2Multimode reconfigurable amplifier and analog filter including the same

Publication Date: 2018.03.06 SAMSUNG ELECTRONICS CO LTD

AI summary

Provided is a reconfigurable amplifier. The reconfigurable amplifier includes a gain circuit including a gain path configured to amplify an input signal, and a feed forward circuit including a feed forward path configured to receive the input signal and perform feed forward compensation on the input signal, and a first control circuit configured to perform the feed forward compensation in a first mode by activating the feed forward path, and deactivate the feed forward path in a second mode different from the first mode.