Tunable Acoustic Wave Resonator Circuits for TX/RX Band Isolation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing resonator circuits and modulating resonators face challenges in efficiently modulating resonators to shift their resonate and anti-resonate points, particularly in duplex signal transceiver architectures where signal interference between TX and RX bands is significant.
Innovation Solution
The implementation of tunable or modulated resonator circuits that utilize variable capacitors in parallel or series with acoustic wave resonators to shift the resonate and anti-resonate frequencies, thereby allowing for precise tuning of resonator circuits to specific sub-bands or bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If fixed resonator circuits are used, then device complexity is reduced, but signal interference between TX and RX bands increases
Solution Approach 1:
The patent applies dynamics by making the resonator circuit tunable through variable capacitors that can adjust capacitance values dynamically. This allows the resonant frequency to be shifted between TX and RX bands, enabling the same hardware to adapt to different operational modes and reduce signal interference without requiring separate fixed circuits for each function.
Solution Approach 2:
The patent changes the electrical parameter (capacitance) of the resonator circuit by incorporating variable capacitors with adjustable capacitance values. By modifying the capacitance parameter, the resonant frequency of the circuit can be tuned to different values, allowing selective filtering of TX and RX bands and reduction of signal interference.
2Adaptability or versatility
If resonator frequency is fixed, then manufacturing precision requirements are reduced, but adaptability to different frequency bands decreases
Solution Approach 1:
The resonator circuit is designed with dynamic tuning capability through variable capacitors, allowing the resonant frequency to be adjusted after manufacturing. This eliminates the need for extremely precise fixed-frequency manufacturing while maintaining the ability to adapt to different frequency bands through electronic control.
Solution Approach 2:
By incorporating variable capacitors with adjustable capacitance ranges, the patent enables the resonator to operate across multiple frequency bands. The capacitance parameter can be changed electronically to match different operational requirements, providing frequency band adaptability without demanding ultra-precise manufacturing tolerances.
3Measurement precision
If simple resonator circuits are used, then ease of manufacture is improved, but signal filtering precision decreases
Solution Approach 1:
The patent uses variable capacitors with adjustable capacitance values to achieve precise frequency filtering. By electronically tuning the capacitance parameter, the resonant frequency can be precisely controlled to match specific frequency requirements, providing high filtering precision while maintaining a relatively simple circuit structure that is easy to manufacture.
Solution Approach 2:
The patent replaces complex mechanical tuning mechanisms with electronic control of variable capacitors. This substitution maintains manufacturing simplicity while achieving precise frequency control through electrical parameter adjustment, avoiding the complexity of mechanical tuning components.
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 effectively reduces signal interference between TX and RX bands by allowing for precise filtering and modulation of resonator circuits, enhancing the isolation and rejection of adjacent channels in communication systems.
Implementation Method 1
The variable capacitor may be coupled in parallel or in series with the acoustic wave resonator and may shift a resonate frequency or an anti-resonate frequency of the acoustic wave resonator
Data Source
AI summary
Embodiments of resonator circuits and modulating resonators and are described generally herein. One or more acoustic wave resonators may be coupled in series or parallel to generate tunable filters. One or more acoustic wave resonances may be modulated by one or more capacitors or tunable capacitors. One or more acoustic wave modules may also be switchable in a filter. Other embodiments may be described and claimed.