RF Transceiver Antenna ID Circuit Detection
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Solution Overview
Problem
Multi-band wireless communications devices face challenges in accurately identifying and ensuring the correct antenna is connected to the appropriate port, especially in devices with configurable or hot-swappable antenna ports, as existing methods provide limited feedback and can result in false indications due to environmental factors and physical damage.
Innovation Solution
The implementation of an RF transceiver device with a probe circuit and antenna ID circuit that modulates a DC supply current to determine the identity of the RF antenna element, using a voltage-controlled current source and electrostatic discharge devices, allowing for accurate identification and correction of antenna placement without user intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple antenna connection ports are provided in multi-band devices, then the device can operate within multiple frequency bands, but the wrong antenna may be inadvertently inserted into a particular port
Solution Approach 1:
The patent implements a feedback mechanism where the transceiver detects which antenna is connected to which port by monitoring the electrical characteristics (such as impedance or reflection coefficient) of each antenna port. This feedback information is used to automatically identify and correct mismatched antenna connections, ensuring that each frequency band operates with the appropriate antenna type even if initially connected incorrectly.
2Measurement precision
If antenna detection methods are implemented, then antenna identification is possible, but false indications can occur due to environmental factors and physical damage
Solution Approach 1:
The patent applies preliminary action by pre-configuring each antenna with unique identification characteristics (such as specific impedance values or embedded RFID tags) and pre-programming the transceiver with the expected characteristics for each frequency band. Before operation, the system performs a validation check comparing detected characteristics against the pre-stored reference values, which helps distinguish between genuine identification signals and false indications caused by environmental interference or physical damage.
3Adaptability or versatility
If configurable or hot swappable antenna ports are used, then port flexibility is increased, but the issue of wrong antenna insertion is aggravated
Solution Approach 1:
The patent implements self-service functionality where the system automatically detects and corrects antenna port mismatches without requiring user intervention. When an antenna is connected to a port, the transceiver automatically measures the electrical characteristics, compares them against the database of expected characteristics for different frequency bands, and if a mismatch is detected, the system automatically reconfigures the port assignments or provides visual/audible guidance to the user for correction, thereby eliminating the need for manual verification.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables accurate detection and correction of antenna placement in multi-band devices, reducing errors and providing reliable operation across various frequency bands without the need for user interaction or complex software adjustments.
Implementation Method 1
a probe circuit coupled to the at least one first connector and configured to place a direct current (DC) supply voltage on the at least one first connector
Implementation Method 2
an antenna identification (ID) circuit coupled to the second connector and configured to be powered from the DC supply voltage and modulate a DC supply current indicative of an ID of the RF antenna element
Implementation Method 3
The probe circuit may be configured to determine the ID of the RF antenna element based upon the modulated DC supply current
Implementation Method 4
a first electrostatic discharge (ESD) device coupled between the first inductor and a reference voltage
Data Source
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AI summary
A wireless communications device may include an RF transceiver. The RF transceiver may have a first connector, an RF transceiver circuit coupled to the first connector, and a probe circuit coupled to the first connector and configured to place a DC supply voltage on the first connector. The wireless communications device may include an RF antenna assembly to be coupled with the RF transceiver. The RF antenna assembly may have a second connector configured to be mated with the first connector, an RF antenna element coupled to the second connector, and an antenna ID circuit coupled to the second connector and configured to be powered from the DC supply voltage and modulate the DC supply current indicative of an ID of the RF antenna element. The probe circuit may be configured to determine the ID of the RF antenna element based upon the modulated DC supply current.