GNSS Receiving Module with Switchable Filter Placement
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Solution Overview
Problem
Existing GNSS receiver front-end modules have limited application scenarios due to the need for separate front and rear filters, occupying significant space and limiting flexibility in devices with and without cellular communication functions.
Innovation Solution
A receiving module with a built-in filtering unit that can operate in both front and rear modes, allowing it to be used in devices with or without cellular communication functions by adjusting its operating mode, reducing space requirements and enhancing flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a discrete filter and LNA are used separately, then the receiving module can suppress out-of-band interference, but the space occupied by the device increases
Solution Approach 1:
The filter and LNA are integrated into a single receiving module package, combining two previously separate discrete devices into one unified component. This merging reduces the overall space occupied while maintaining both the filtering and amplification functions necessary for GNSS signal reception.
Solution Approach 2:
The receiving module is designed with multi-functionality to serve both GNSS reception and cellular communication functions. The filter can operate in different modes (front filter or rear filter) depending on the application scenario, making the device universally applicable to various electronic devices regardless of whether they have cellular communication functions.
2Area of stationary object
If the filter is integrated with the LNA, then the space occupied is reduced, but the application scenarios become limited
Solution Approach 1:
The receiving module incorporates a switching mechanism that dynamically changes the filter's operating mode based on the application scenario. The filter can be switched between front filter mode (for devices with cellular communication) and rear filter mode (for devices without cellular communication), providing adaptability across different use cases while maintaining the integrated compact structure.
Solution Approach 2:
The receiving module is designed with multi-functionality to serve both GNSS reception and cellular communication functions. The filter can operate in different modes (front filter or rear filter) depending on the application scenario, making the device universally applicable to various electronic devices regardless of whether they have cellular communication functions.
3Adaptability or versatility
If separate front and rear filters are provided, then the receiving module can handle both cellular and non-cellular scenarios, but the device complexity increases
Solution Approach 1:
The receiving module is designed with multi-functionality to serve both GNSS reception and cellular communication functions. The filter can operate in different modes (front filter or rear filter) depending on the application scenario, making the device universally applicable to various electronic devices regardless of whether they have cellular communication functions.
Solution Approach 2:
The receiving module incorporates a switching mechanism that dynamically changes the filter's operating mode based on the application scenario. The filter can be switched between front filter mode (for devices with cellular communication) and rear filter mode (for devices without cellular communication), providing adaptability across different use cases while maintaining the integrated compact structure.
Data Source
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AI summary
This application provides a receiving module, a packaging structure, a printed circuit board, and an electronic device, related to the field of radio frequency technologies, which can mitigate a problem that application scenarios of a front-end receiving module of an existing GNSS receiver are limited. The receiving module includes a first filtering unit, an amplifying unit, and a control element. The first filtering unit is disposed at a first end of the amplifying unit and the control element is connected to the amplifying unit, to control an operating mode of the amplifying unit. When the amplifying unit operates in a first mode, the first end of the amplifying unit acts as a signal input end, and in this way, the first filtering unit acts as a front filtering unit. When the amplifying unit operates in a second mode, the first end of the amplifying unit acts as a signal output end, and in this way, the first filtering unit acts as a rear filtering unit. The control element is used to control the amplifying unit to switch an operating mode. A built-in filtering unit of the receiving module can act as the front filtering unit or the rear filtering unit, which can be applied to different application scenarios.