RF Test Connector Reduction via Dynamic Antenna Tuner Configuration
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Solution Overview
Problem
Designers of wireless communication devices face challenges in optimizing antenna matching and isolation due to limited real estate, particularly when performing low and high band RF testing with multiple antenna systems, as conventional systems require multiple test connectors connected to each transceiver output port.
Innovation Solution
A method and system that utilize a controller to determine the connection of an RF test cable to configure antenna tuners for either test modes, such as carrier aggregation or diversity receiver test modes, or normal operation, allowing for efficient use of limited space by dynamically adjusting antenna tuner configurations based on the presence or absence of the test cable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple test connectors are used for low and high band RF testing, then RF testing capability is improved, but device complexity and real estate requirements worsen
Solution Approach 1:
The patent implements a single test connector that can perform multiple RF testing functions across different frequency bands (low band and high band) and multiple antenna systems. The controller dynamically configures the antenna tuners based on the test mode required, allowing one connector to replace what would traditionally require multiple dedicated connectors for different testing scenarios.
Solution Approach 2:
The patent employs dynamic configuration of antenna tuners through controller-based control. The system transitions from static, fixed-configuration connectors to a dynamic system where antenna tuner settings are adjusted in real-time based on the detected test mode, enabling the same physical connector to adapt to different frequency bands and testing requirements.
2Measurement precision
If multiple test connectors are used for each transceiver output port, then RF testing precision is improved, but device area worsens
Solution Approach 1:
The patent consolidates multiple dedicated test connector positions into a single multi-functional test connector. This single connector can serve different transceiver output ports and frequency bands through dynamic antenna tuner configuration, significantly reducing the space required while maintaining the ability to perform precise RF testing across multiple scenarios.
3Adaptability or versatility
If antenna tuners are dynamically configured for test modes, then device adaptability is improved, but control complexity worsens
Solution Approach 1:
The patent implements a feedback mechanism where the controller first detects whether an RF test cable is connected and identifies the specific test mode required. Based on this feedback information, the controller automatically selects and applies the appropriate antenna tuner configuration. This closed-loop approach manages complexity by using detection results to trigger predetermined configuration actions.
Solution Approach 2:
The patent prepares multiple antenna tuner configurations in advance for different test modes (carrier aggregation, diversity receiver, normal operation). When a test cable is detected, the system retrieves and applies the pre-configured settings rather than calculating them in real-time, reducing the computational complexity burden during active testing.
Data Source
AI summary
A method and system configures a wireless communication device to support various radio frequency test modes. A controller determines whether an RF test cable is connected between test equipment and a test connector while a corresponding transceiver(s) is operating. In response to determining that the RF test cable is connected between test equipment and the test connector while the corresponding transceiver is operating, the controller provides an antenna tuner configuration(s) corresponding to the operating transceivers to support a test mode which, for example, can include any of a carrier aggregation (CA) test mode and a diversity transmission test mode. However, if the RF test cable is not connected between test equipment and the test connector while the corresponding transceiver(s) is operating, the controller determines an antenna tuner configuration corresponding to a normal/non-test device communication mode. The controller configures the antenna tuner(s) using the determined antenna tuner configuration(s).