Reconfigurable Antenna with Transformation Matrices for Adaptive Polarization
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Solution Overview
Problem
Existing wireless communication network antennas have fixed polarization and electrical distance settings, which are sub-optimal due to changing traffic patterns and propagation characteristics, leading to compromised system performance.
Innovation Solution
A reconfigurable antenna arrangement with dual-polarized antenna elements and transformation matrices that adjust polarization states and virtual antenna port correlations in response to current communication conditions, using a control unit to apply transformation matrices and amplify or filter signals across different frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If fixed polarization and electrical distance settings are used in antenna ports, then device complexity is reduced and ease of manufacture is improved, but system performance deteriorates due to changing traffic patterns and propagation characteristics
Solution Approach 1:
The patent implements reconfigurable antenna ports that can dynamically adjust polarization states and electrical distances between ports based on current communication conditions. The antenna system transitions from fixed physical configurations to dynamically adjustable virtual antenna ports, allowing the base station to adapt to changing traffic patterns and propagation characteristics while maintaining manufacturing simplicity
Solution Approach 2:
The invention changes the polarization parameters and electrical distance parameters of antenna ports through signal processing transformations. By applying transformation matrices to the signals from fixed antenna elements, the system creates virtual antenna ports with adjustable polarization states and inter-port distances, resolving the contradiction between fixed manufacturing and adaptive performance
2Adaptability or versatility
If reconfigurable antenna ports with adjustable polarization and electrical distance are implemented, then system performance and adaptability are improved, but device complexity increases
Solution Approach 1:
The patent introduces transformation matrices as intermediary signal processing components between the fixed antenna elements and the virtual antenna ports. These matrices act as mediators that transform the signals from the simple fixed antenna structure into configurations with adjustable polarization and electrical distance, achieving adaptability without physically complicating the antenna hardware
Solution Approach 2:
The invention replaces potential mechanical reconfiguration mechanisms with electrical signal processing. Instead of physically moving or reconfiguring antenna elements, the system uses transformation matrices applied to the electrical signals to achieve the same effect of adjusting polarization and inter-port distances, significantly reducing device complexity
3Productivity
If transformation matrices are applied to adjust polarization states, then beamforming and spatial multiplexing gains are enhanced, but signal processing complexity increases
Solution Approach 1:
The patent pre-calculates and stores multiple transformation matrices corresponding to different polarization states and spatial configurations. Rather than performing complex real-time calculations, the system selects and applies pre-computed matrices based on current channel conditions, reducing the real-time signal processing complexity while maintaining the ability to achieve beamforming and spatial multiplexing gains
Data Source
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AI summary
The present invention relates to a node (1) in a wireless communication network (38), where the node (1) comprises at least one antenna arrangement (2, 3, 4). Each antenna arrangement (2, 3, 4) in turn comprises at least four antenna devices (5, 6, 7, 8) with corresponding pairs of antenna ports (A, B, C, D) which in turn comprise corresponding first antenna ports (P1 A, P1 B, P1 C, P1 D) and second antenna ports (P2A, P2B, P2C, P2D). Each antenna device (5, 6, 7, 8) comprises at least one corresponding dual polarized antenna element (9, 10, 11, 12) arranged for transmitting and/or receiving signals at a first polarization (P1) via the corresponding first antenna port (P1 A, P1B, P1 C, P1D) and for transmitting and/or receiving signals at a second polarization (P2) via the corresponding second antenna port (P2A, P2B, P2C, P2D), where the polarizations (P1, P2) are mutually orthogonal. Each antenna arrangement (2, 3, 4) further comprises at least a first transformation matrix arrangement (13) which in turn comprises at least four corresponding virtual antenna ports (14, 15, 16, 17; 19, 20, 21, 22). The antenna ports (P1A, P1 B, P1 C, P1D; P2A, P2B, P2C, P2D) are at least indirectly connected to each transformation matrix arrangement (13, 18). Each transformation matrix arrangement (13, 18) is arranged to set a certain polarization state for each corresponding virtual antenna port (14, 15, 16, 17; 19, 20, 21, 22).