GNSS Preprocessing Module Antenna Adaptation
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Solution Overview
Problem
The diverse configurations of antennas in terminal devices require specialized preprocessing modules for each configuration, leading to increased development costs and complexity.
Innovation Solution
A preprocessing module for GNSS chips that includes a filter unit and switch units to adapt to different antenna configurations, allowing for the processing and separation of positioning signals from multiple frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a preprocessing module is specially designed for each antenna configuration type, then the antenna can adapt to the GNSS chip, but the development costs of the terminal device are increased
Solution Approach 1:
The preprocessing module is designed with a universal architecture that can support multiple antenna configurations through software configuration rather than hardware redesign. The module includes switch units and filter units that can be dynamically configured to adapt to different antenna types (single antenna, dual antennas, different frequency bands) without requiring separate physical designs for each configuration, thereby reducing development costs while maintaining adaptability.
2Adaptability or versatility
If a preprocessing module is specially designed for each antenna configuration type, then the antenna can adapt to the GNSS chip, but the device complexity is increased
Solution Approach 1:
The preprocessing module employs dynamic configuration capabilities where switch units and filter units can be programmatically controlled to adapt to different antenna configurations. This dynamic approach allows a single module design to handle multiple scenarios (single antenna, dual antennas, different frequency bands) through software control rather than requiring complex static hardware designs for each configuration type.
Solution Approach 2:
The module utilizes parameter-based configuration where operational characteristics (such as which antenna connects to which interface, filter frequency characteristics) can be changed through software parameters rather than hardware modifications. This allows the same physical module to adapt to different antenna configurations by changing operational parameters, thereby reducing design complexity.
Data Source
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AI summary
Embodiments of this application provide a preprocessing module of a GNSS chip and a terminal device. The preprocessing module includes: a first port, where one end of the first port is connected to a first switch unit, and the other end of the first port is suspended, or is configured to connect to a first antenna of a terminal device; the first switch unit, where the first switch unit has a connecting end configured to connect to a first interface, and is configured to: connect the first port and the first interface or connect a filter unit and the first interface; a second port, configured to receive a first signal or a second signal; and the filter unit, configured to: filter the first signal to obtain a first positioning signal and a second positioning signal, provide the first positioning signal for the first switch unit, and provide the second positioning signal for a second interface of the GNSS chip, or provide a second positioning signal in the second signal for the second interface. This not only can implement adaptation between an antenna of the terminal device and the GNSS chip, but also can adapt to a plurality of antenna configuration types, and achieves relatively high universality.