RF Signal Testing Structure on PCB Without High Frequency Switches
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional methods for testing radio frequency signals in portable electronic devices are unstable and costly, especially during mass production, due to the need for additional high frequency switches and complex component placement on printed circuit boards.
Innovation Solution
An electronic device and testing system that includes a printed circuit board with an antenna structure and radio frequency signal transceiving circuit connected by a conductive line, featuring a testing point and grounding structure, allowing for accurate measurement of radio frequency signals without the need for a high frequency switch, using a probe connected to the testing point and an extended grounding terminal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a high frequency switch is disposed between the antenna element and radio frequency signal transceiver module to enable stable measurement, then measurement stability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent extracts the testing function from the signal path by introducing a separate testing structure with testing point and grounding structure. This allows the antenna to remain connected to the radio frequency signal transceiver module while enabling independent measurement through the testing structure, eliminating the need for a high frequency switch in the signal path.
Solution Approach 2:
The patent introduces a testing structure as an intermediary between the antenna and the measurement device. This testing structure includes a testing point connected to the conductive line and a grounding structure, which serves as a mediator to enable stable measurement without disrupting the normal signal transmission path between the antenna and radio frequency signal transceiver module.
2Measurement precision
If a high frequency switch is added to enable accurate signal measurement, then measurement accuracy is improved, but manufacturing cost increases
Solution Approach 1:
The patent extracts the measurement function from the main signal path by creating a separate testing structure. This allows accurate measurement of the radio frequency signal without requiring expensive high frequency switches, as the testing structure provides a dedicated path for measurement while maintaining the integrity of the normal communication signal path.
3Adaptability or versatility
If additional components are disposed on the printed circuit board to enable testing, then measurement capability is improved, but ease of component placement deteriorates
Solution Approach 1:
The patent merges the testing structure with the existing printed circuit board design. The testing point is integrated into the conductive line structure, and the grounding structure is disposed on the printed circuit board, combining the testing functionality with the existing component layout. This integration maintains ease of component placement while providing accurate measurement capability.
Data Source
AI summary
An electronic device is provided. The electronic device includes a printed circuit board (PCB), an antenna structure, a radio frequency signal transceiving circuit and a testing structure. The antenna structure is disposed on the PCB. The radio frequency signal transceiving circuit is disposed on the PCB, and is connected to the antenna structure through a conductive line. The testing structure includes a testing point and a grounding structure. The testing point is disposed on the conductive line, and the grounding structure is disposed on the PCB.