Automatic Duplexer Identification for Signal Path Compensation
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Solution Overview
Problem
The existing duplexer units in wireless communications devices require unique models for each pair of transmit and receive frequency bands, leading to financial inefficiencies due to variations in insertion loss, necessitating the production of multiple remote antenna unit models to compensate for these variations.
Innovation Solution
A method is introduced to automatically identify and adjust the duplexer units by receiving duplexer identifier data, determining adjustment data, and sending control signals to compensate for the insertion losses of downlink and uplink filters, allowing a single type of wireless communications device to support multiple duplexer units, reducing the need for multiple models.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If unique duplexer unit models are manufactured for each pair of transmit and receive frequency bands, then signal path power levels can be precisely equalized to compensate for insertion loss variations, but manufacturing complexity and inventory costs increase significantly
Solution Approach 1:
The patent implements a single universal duplexer unit design that can operate across multiple frequency bands (e.g., Band 13 and Band 17) through automatic identification and dynamic adjustment. The system uses a controller to receive identifier data from the duplexer unit, determine the appropriate signal path configuration, and automatically adjust power levels to compensate for insertion loss variations. This eliminates the need for multiple specialized models while maintaining precise signal equalization.
Solution Approach 2:
The system dynamically changes operational parameters (signal path power levels) based on the identified duplexer unit type and frequency band configuration. By measuring insertion loss characteristics and automatically adjusting amplifier gains or attenuator settings, the system adapts to different frequency bands without requiring hardware modifications or multiple unit models.
2Reliability
If multiple remote antenna unit models are produced to compensate for duplexer filter insertion loss variations, then signal quality is maintained across different frequency bands, but production costs and inventory requirements increase
Solution Approach 1:
The duplexer unit incorporates automatic self-identification capabilities, providing identifier data to the controller that enables the system to automatically determine the correct signal path configuration. This self-service approach eliminates the need for manual configuration or specialized handling of different unit types, allowing a single production line to serve multiple frequency band requirements while maintaining signal quality consistency.
3Adaptability or versatility
If a single wireless communications device supports multiple duplexer unit types through automatic identification, then device versatility increases and inventory costs decrease, but system complexity and calibration requirements increase
Solution Approach 1:
The system implements a feedback loop where the controller receives identifier data from the duplexer unit, determines the appropriate configuration, and automatically adjusts signal path parameters. This closed-loop approach enables the system to adapt to different frequency bands and duplexer unit types automatically, maintaining versatility while managing complexity through intelligent control rather than hardware proliferation.
Data Source
AI summary
Methods and apparatuses are provided that configure downlink and uplink signal paths by obtaining information about at least one of a downlink filter and an uplink filter in a duplexer unit after the duplexer unit is coupled to a primary uplink signal path and a primary downlink signal path. Based upon such information, at least one component of the downlink and uplink signal paths is adjusted to compensate for the insertion losses of a downlink filter and an uplink filter, where the downlink signal path comprises a secondary downlink signal path in the duplexer unit and the primary downlink signal path, and the uplink signal path comprises a secondary uplink signal path in the duplexer unit and the primary uplink signal path.