Mutual Coupling Synchronization for Multi-Antenna Oscillators
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Solution Overview
Problem
Electronic systems with multiple antennas face design and cost challenges when relying on a single master local oscillator for synchronization, as they require complex and expensive signal paths with power dividers, leading to reliability issues due to high-frequency demands and amplification needs.
Innovation Solution
Implementing multiple antenna systems with independent local oscillators that synchronize based on mutual coupling signals, eliminating the need for a shared signal path and reducing the reliance on power dividers and amplification elements, thereby simplifying design and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single master local oscillator is used to synchronize multiple antennas, then synchronization is achieved, but design complexity and cost increase due to required signal paths with power dividers and amplification elements
Solution Approach 1:
The patent divides the system into multiple independent oscillator units, each with its own local oscillator and signal generation chain. Instead of one master oscillator feeding all antennas through complex distribution networks, each antenna element has a segmented, independent oscillator that can be individually calibrated and controlled, eliminating the need for power dividers and reducing signal path complexity
Solution Approach 2:
The patent introduces a synchronization signal that acts as an intermediary between independent oscillators. This synchronization signal allows multiple independent oscillators to coordinate their operation without requiring direct physical connection through complex power divider networks, thereby reducing device complexity while maintaining synchronization
2Reliability
If a single master local oscillator is used to synchronize multiple antennas, then common time base is provided, but cost increases due to power dividers and amplification requirements
Solution Approach 1:
The system is segmented into independent oscillator modules that can be manufactured and tested separately. Each module contains its own local oscillator and can be independently calibrated, reducing manufacturing complexity and cost while maintaining time base consistency through synchronization signals
Solution Approach 2:
Instead of distributing a single master oscillator signal through expensive power divider networks, the patent creates multiple copies of the synchronization function using independent oscillators. Each oscillator is calibrated to match the desired time base, eliminating the need for costly power dividers and amplification elements while maintaining time base consistency
3Reliability
If signal paths are extended to distribute master LO signal to multiple elements, then multiple antennas can be synchronized, but design complexity increases due to delay error and loss compensation
Solution Approach 1:
The patent segments the signal distribution function into individual oscillator units at each antenna element. This eliminates the need for long signal paths and power dividers, as each element generates its own signal locally. The segmentation removes delay error and loss compensation requirements while maintaining multi-element synchronization
Solution Approach 2:
A synchronization signal acts as an intermediary that coordinates independent oscillators without requiring physical signal distribution through complex paths. This intermediary approach enables multi-element synchronization while avoiding the delay and loss issues associated with extended signal paths
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
This approach allows for coherent operation of multiple antennas without a single master LO, reducing design complexity and costs, while enhancing reliability by eliminating the need for complex signal routing and amplification, thus improving system performance and efficiency.
Implementation Method 1
synchronizing a time base of the follower oscillator to one or more time bases of the one or more leader oscillators based on one or more mutual coupling signals
Data Source
AI summary
Systems, methods, and computer-readable media for synchronizing oscillators. A system can include a plurality of oscillators comprising at least a first oscillator and a second oscillator. The system can also include a plurality of antennas comprising at least a first antenna and a second antenna. Further, the system can include a first oscillator synchronizer coupling the first oscillator to the first antenna. The first oscillator synchronizer can be operative to perform a first synchronization of a first time base of the first oscillator to a second time base of the second oscillator based on a first mutual coupling signal. The first mutual coupling signal can represent a first interaction between the first antenna and the second antenna.