Base Station Standing Wave Detection Using Digital Domain Power Values
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing standing wave detection devices in base stations require dedicated detection circuits, leading to high production costs due to the need for multiple components for forward and reverse power value detection.
Innovation Solution
A method and device that acquire forward and reverse power signals in the digital domain using existing circuits within the base station system, eliminating the need for separate detection circuits by utilizing a variable gain circuit and reverse coupler to calculate the standing wave ratio in a single time slot.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dedicated detection circuit with multiple components is used for forward and reverse power detection, then the standing wave detection can be realized, but the product cost increases
Solution Approach 1:
The patent makes existing base station circuits (variable gain circuit and reverse coupler) perform dual functions: their original functions plus standing wave detection. The variable gain circuit's gain value is reused for forward power calculation, and the reverse coupler is reused for reverse power sampling, eliminating the need for dedicated detection components.
Solution Approach 2:
The patent merges the standing wave detection function with existing base station circuits. Instead of separate detection circuits, the forward power detection is merged with the variable gain circuit and reverse power detection is merged with the reverse coupler, combining multiple functions into existing components.
2Measurement precision
If multiple components are used for forward and reverse power detection, then accurate power values can be obtained, but the device complexity increases
Solution Approach 1:
Existing circuits are made multi-functional to perform both their original purposes and power detection. The variable gain circuit provides both signal amplification and forward power measurement data, while the reverse coupler provides both signal coupling and reverse power sampling, reducing component count while maintaining measurement capability.
Solution Approach 2:
The existing circuits serve themselves by providing detection data as a byproduct of their normal operation. The variable gain circuit's gain setting automatically provides forward power information, and the reverse coupler's coupling automatically provides reverse power information, eliminating the need for separate dedicated detection circuits.
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
A standing wave detection method, a standing wave detection device, and a base station are provided. The standing wave detection method mainly includes: acquiring a forward digital domain power value L1 of a forward transmission channel and a gain value L2 of a variable gain circuit of the forward transmission channel in a same time slot, and a reverse power value L3 of a sampled reverse power signal; and then obtaining a standing wave ratio according to the L1, the L2, and the L3. The standing wave detection method can realize collection of forward power signals and reverse power signals without using a dedicated detection circuit, and thus is cost effective.