Phase Shifter Polarization Control for Radio Signal Quality
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Solution Overview
Problem
In radio communication networks, signal quality is often degraded due to mismatched polarization between transmitting and receiving antennas, caused by factors like multiple reflections and de-polarization, leading to inefficiencies in signal transmission.
Innovation Solution
A method and system that adjust the phase offset between transmitted and received signals based on signal quality parameters to optimize the polarization of the composite signal, allowing it to be circularly, elliptically, or linearly polarized, using a phase shifter and system controller to continually adjust the phase offset for improved signal quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If linearly polarized antennas are used in radio communication network, then the antenna structure is simple and easy to manufacture, but signal quality is degraded due to polarization mismatch when transmitting antenna angle varies
Solution Approach 1:
The patent applies dynamics by making the polarization state adjustable rather than fixed. The system dynamically changes the polarization of the composite signal between linear, circular, and elliptical modes based on the transmitting antenna's angle, allowing the receiving antenna to maintain optimal signal quality regardless of the transmitter's orientation.
Solution Approach 2:
The patent changes the polarization parameter of the composite signal to adapt to different transmitting antenna angles. By adjusting the phase offset between signal components, the system transforms the polarization state (linear ↔ circular ↔ elliptical) to match the optimal reception condition for the current antenna orientation.
2Reliability
If phase offset adjustment is implemented to optimize signal quality, then signal quality is improved, but device complexity increases due to additional phase shifter and control system
Solution Approach 1:
The patent implements feedback by continuously monitoring signal quality parameters and using this information to adjust the phase offset. The system receives data representing signal quality, processes this information, and automatically modifies the phase relationship between signal components to optimize reception, creating a closed-loop control system.
Solution Approach 2:
The system performs self-adjustment by automatically varying the phase offset based on received signal quality data without requiring manual intervention. The phase shifter and controller work autonomously to maintain optimal polarization alignment, allowing the system to adapt to changing conditions on its own.
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
The solution effectively enhances signal quality by aligning the polarization of transmitted and received signals, improving the reception of signals in radio communication networks by optimizing the phase offset, thereby increasing the reliability and strength of the composite signal.
Implementation Method 1
adjusting a phase offset between the transmitted or received signals based on the received data such that the composite signal formed from the transmitted or received signals has an optimized signal quality
Implementation Method 2
The phase offset is adjusted by varying the phase offset between the transmitted or received signals such that the composite signal is circularly, elliptically, or linearly polarized
Data Source
AI summary
Signal quality of a composite received signal in a radio communication network is optimized by adjusting a phase offset between received and/or transmitted signals based on signal quality parameters of the received and/or transmitted signals. The phase offset is adjusted by varying the phase offset between the received or transmitted signals such that that the composite signal is circularly, elliptically, or linearly polarized. The phase offset between the received or transmitted signals is continually adjusted based on the received signal quality parameters.