Shared Amplifier Band Routing for Low-Loss Multi-Band Signals

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Solution Overview

Problem

Conventional dual and triple band bidirectional amplifiers suffer from significant power loss, noise insertion, and increased cost due to the use of power dividers and multiple amplifier chains, which become exacerbated in complex wireless communication systems operating with multiple frequency bands.

Innovation Solution

A wireless band amplification device utilizing a shared amplifier configuration with circulators and duplexers, capable of amplifying signals across multiple frequency bands with reduced power loss and component count, eliminating the need for multiple amplifier chains and power dividers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional dual band bidirectional amplifiers are constructed from two single band bidirectional amplifiers connected by two power dividers, then signal coverage for two frequency bands is provided, but power loss and noise insertion increase significantly

Engineering Contradiction:
Improvesignal coverage for two frequency bandsVSAvoidpower loss
Core Design Contradiction:
Adaptability or versatilityVSLoss of energy

Solution Approach 1:

The patent merges two separate single-band amplifier systems into a single dual-band amplifier system. Instead of using two independent amplifiers with power dividers, the invention combines the amplification function into one amplifier that handles both frequency bands, thereby eliminating the power dividers and reducing power loss and noise insertion while maintaining dual-band coverage

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent makes a single amplifier universal by enabling it to amplify signals across two different frequency bands. This multi-functional amplifier replaces the need for separate single-band amplifiers, achieving dual-band coverage without the associated power loss and noise from power dividers

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If conventional dual band bidirectional amplifiers use two power dividers to provide signal path for two frequency bands, then dual band amplification is achieved, but device complexity and cost increase

Engineering Contradiction:
Improvedual band amplificationVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent merges the functionality of two separate single-band amplifiers into one dual-band amplifier, eliminating the need for two power dividers and reducing the overall device complexity while maintaining dual-band amplification capability

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent extracts and removes the power dividers from the system architecture. By eliminating these unnecessary components, the invention simplifies the device structure, reduces complexity, and lowers cost while still achieving dual-band amplification through the single unified amplifier

Inventive Principle:
Principle #2Taking out (Extraction)

3Adaptability or versatility

If conventional dual band bidirectional amplifiers use two single band bidirectional amplifiers, then dual band coverage is provided, but the cost becomes more than double that of a single band amplifier

Engineering Contradiction:
Improvedual band coverageVSAvoidcost
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent merges two separate amplifier units into one integrated dual-band amplifier, significantly reducing the component count and manufacturing cost. The single amplifier design requires fewer materials and assembly steps compared to two separate amplifiers, making dual-band coverage more cost-effective

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent creates a universal amplifier capable of handling two frequency bands, replacing the need for two separate single-band amplifiers. This multi-functional approach reduces the overall system cost while maintaining full dual-band coverage capability

Inventive Principle:
Principle #6Universality (Multi-functionality)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The solution achieves efficient band amplification with minimal power loss and noise insertion, reducing system complexity and costs, while maintaining effective signal amplification across multiple frequency bands.

Implementation Method 1

The wireless band amplification device has two circulators, the first circulator in communication with the input port of the amplifier and the second circulator in communication with the output port of the amplifier

Methodology Applied
Scientific EffectCirculator:

Implementation Method 2

two duplexer devices are provided in communication with both circulators

Methodology Applied
Scientific EffectDuplexer:

Implementation Method 3

The input port of the amplifier is enabled to receive at least a first frequency band downlink signal and a first frequency band uplink signal

Methodology Applied
Scientific EffectAmplification:

Data Source

PatentUS8027699B2Systems and methods of band amplification with a shared amplifier
Publication Date: 2011.09.27 RFS TECH INC
  • US8027699B2 patent drawing
  • US8027699B2 patent drawing
  • US8027699B2 patent drawing

AI summary

The present invention provides systems and methods for band amplification with a shared amplifier. In an exemplary embodiment, the wireless band amplification device has with an amplifier with an input port and an output port. The wireless band amplification device also provides two circulators, the first circulator in communication with the input port of the amplifier and the second circulator in communication with the output port of the amplifier. Additionally, two duplexer devices are provided in communication with both circulators. The input port of the amplifier is enabled to receive at least a first frequency band downlink signal and a first frequency band uplink signal. In an alternate embodiment, the input port of the amplifier can be further adapted to receive a second frequency band downlink signal and a second frequency band uplink signal. Additionally, the input port of the amplifier can be further adapted to receive a third frequency band downlink signal and a third frequency band uplink signal.