Signal Booster Quadplexer Spectrally Adjacent Bands
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Solution Overview
Problem
Current signal boosters for wireless communication often fail to effectively amplify and filter signals in spectrally adjacent bands, leading to inefficiencies and interference in cellular networks.
Innovation Solution
The signal booster incorporates a triplexer or quadplexer configuration with bandpass filters to manage uplink and downlink signals across multiple frequency bands, including spectrally adjacent bands, and a controller for network protection by adjusting gain or noise power based on received signal strength indications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a signal booster uses a single signal path for amplification, then the device complexity is reduced, but it fails to effectively manage signals in spectrally adjacent bands leading to interference
Solution Approach 1:
The patent divides the signal processing into separate uplink and downlink signal paths, with each path containing bandpass filters tailored to specific frequency bands. This segmentation allows independent optimization of filtering characteristics for each direction, effectively preventing interference between spectrally adjacent bands while maintaining manageable device complexity through modular architecture.
2Adaptability or versatility
If bandpass filters are designed for wide frequency coverage, then the adaptability to multiple bands is improved, but the filtering precision for individual bands deteriorates
Solution Approach 1:
The patent implements local quality by assigning specific bandpass filters with optimized characteristics to each signal path segment. Each filter is tailored to the precise frequency requirements of its associated band, ensuring high filtering precision for individual bands while the overall system maintains adaptability to multiple bands through the coordinated arrangement of these specialized filters.
3Ease of operation
If the signal booster amplifies all received signals uniformly, then the ease of operation is improved, but network protection capability deteriorates due to inability to adjust gain for different bands
Solution Approach 1:
The patent introduces dynamic gain control through the controller that independently adjusts amplification levels in different signal paths based on real-time signal conditions. This dynamic capability allows the system to maintain ease of operation with automated control while simultaneously improving network protection by adapting gain settings to prevent overload and interference in spectrally adjacent bands.
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
This configuration enhances signal amplification and filtering across multiple bands, reducing interference and improving network performance by dynamically adjusting signal power levels.
Implementation Method 1
The first signal path includes a first bandpass filter configured to pass frequencies associated with the first uplink band and block frequencies associated with the second uplink band
Implementation Method 2
a first amplifier configured to amplify the first downlink signal to generate an amplified first downlink signal
Implementation Method 3
A first triplexer can be coupled to the outside antenna, the first uplink signal path, and the first downlink signal path
Implementation Method 4
a controller for network protection by adjusting gain or noise power based on received signal strength indications
Data Source
AI summary
Technology for a signal booster is disclosed. The signal booster can include a first quadplexer. The signal booster can include a second quadplexer. The signal booster can include one or more first-direction signal paths communicatively coupled between the first quadplexer and the second quadplexer. At least one of the one or more first-direction signal paths can be configured to amplify and filter signals in two or more spectrally adjacent bands. The signal booster can include one or more second-direction signal paths communicatively coupled between the first quadplexer and the second quadplexer. At least one of the one or more second-direction signal paths can be configured to amplify and filter signals in two or more spectrally adjacent bands.