Resonator-Phase Shifter Extractor for Low-Loss Wideband Rejection
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Solution Overview
Problem
Current RF communication systems face challenges in achieving low insertion loss and high rejection in wideband frequency extraction, particularly in 5G frequency ranges, due to trade-offs between signal power loss and unwanted frequency attenuation.
Innovation Solution
The integration of a resonator and a phase shifter in hybrid structures, either in series or parallel configurations, allows for optimized impedance control, introducing additional transmission and reflection zeros to improve insertion loss and rejection, using various phase shifter types such as passive, active, or vector-based shifters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If traditional frequency extraction methods are used, then device complexity is reduced, but insertion loss increases and rejection performance deteriorates
Solution Approach 1:
The patent combines a resonator and a phase shifter into a hybrid structure where the resonator provides frequency-selective resonance and the phase shifter provides phase control. This merging of two functional elements creates a unified component that simultaneously achieves low insertion loss through resonant enhancement and precise phase control, resolving the contradiction between performance and complexity
Solution Approach 2:
The hybrid structure serves multiple functions: the resonator provides frequency selection and signal enhancement, while the phase shifter provides phase control for beamforming and signal processing. This multi-functionality allows a single component to replace what would traditionally require separate elements, reducing overall system complexity while improving insertion loss performance
2Object-generated harmful factors
If traditional frequency extraction methods are used, then device complexity is reduced, but rejection performance deteriorates
Solution Approach 1:
By merging the resonator's frequency-selective rejection capability with the phase shifter's phase control ability, the hybrid structure achieves superior rejection performance. The resonator naturally attenuates unwanted frequencies through its resonant properties, while the phase shifter provides additional phase-based rejection, creating a combined effect that significantly improves rejection performance without requiring multiple separate filter stages
Solution Approach 2:
The phase shifter enables dynamic control of the hybrid structure's electrical parameters, allowing adjustment of the rejection characteristics. By changing the phase shift amount, the system can adaptively optimize rejection performance for different operating conditions and frequency ranges, providing programmable rejection without increasing physical device complexity
3Adaptability or versatility
If wideband frequency extraction is implemented, then frequency coverage is improved, but the trade-off between insertion loss and rejection becomes more severe
Solution Approach 1:
The phase shifter introduces dynamic control capability to the frequency extraction system. By dynamically adjusting the phase shift parameter, the system can optimize the balance between insertion loss and rejection for different frequency bands and operating conditions. This dynamic adaptability allows wideband operation while maintaining optimal performance across the entire frequency range, resolving the severe trade-off that plagues static wideband designs
Solution Approach 2:
The hybrid structure enables independent optimization of insertion loss and rejection through parameter control. The resonator's quality factor and center frequency can be tuned, while the phase shifter's phase shift amount can be adjusted, allowing the system to achieve low insertion loss at desired frequencies while maintaining high rejection at unwanted frequencies across wide bandwidths
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 enhances the frequency extraction capabilities by minimizing trade-offs between insertion loss and rejection, providing improved performance in both low and high frequency ranges, particularly in 5G communication standards.
Implementation Method 1
impedance between the first and second nodes has an order of four or more
Implementation Method 2
a resonator coupled to a first node; and a phase shifter connected to the resonator in series
Implementation Method 3
a phase shifter connected to the resonator in series, the phase shifter coupled to a second node
Data Source
AI summary
A frequency extraction filter is disclosed. The frequency extraction filter can include a resonator that is coupled to a first node, and a phase shifter that is connected to the resonator in series. The phase shifter is coupled to a second node such that the resonator and the phase shifter are positioned between the first and second nodes. Impedance between the first and second nodes has an order of four or more.