Single Crystal Resonator Filters for High-Power Base Station Linearity
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Solution Overview
Problem
Conventional wireless communication technologies face limitations in high power density applications, leading to issues with thermal conductivity, out-of-band rejection, and linearity, particularly in base stations which require higher power levels and more stringent filter designs compared to mobile devices.
Innovation Solution
The use of single crystal devices, specifically single crystal acoustic resonator devices, in wireless communication systems, which provide improved thermal conductivity, low loss, and higher out-of-band rejection, enabling better performance in high power density applications and achieving higher linearity due to their enhanced thermal properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional devices are used in wireless communication systems, then device complexity is reduced, but thermal conductivity deteriorates leading to poor performance in high power density applications
Solution Approach 1:
The patent changes the material parameter from conventional materials to single crystal materials, which fundamentally alters the thermal conductivity property. This parameter change enables the device to handle high power density applications effectively while maintaining structural integrity and performance.
Solution Approach 2:
The patent employs composite material structures including single crystal resonators integrated with filter structures, combining materials with superior thermal properties. This composite approach achieves enhanced thermal conductivity while managing the complexity through systematic integration.
2Reliability
If conventional filter devices are used, then manufacturing simplicity is maintained, but out-of-band rejection deteriorates
Solution Approach 1:
The patent changes the filter device material parameter to single crystal material, which fundamentally improves the out-of-band rejection capability. This material parameter change enables the filter to achieve superior selectivity and signal purity while maintaining manufacturability through established single crystal growth and fabrication techniques.
3Stability of the object's composition
If conventional devices are used, then ease of operation is maintained, but linearity deteriorates in high power density applications
Solution Approach 1:
The patent changes the device material parameter to single crystal material, which fundamentally improves linearity characteristics in high power density applications. This material parameter change provides superior signal fidelity and distortion performance while maintaining ease of operation through standard integration procedures.
4Loss of energy
If conventional materials are used, then manufacturing cost is reduced, but signal loss increases
Solution Approach 1:
The patent changes the material parameter from conventional materials to single crystal materials, which fundamentally reduces signal loss through superior electrical and acoustic properties. This material parameter change achieves lower insertion loss and higher efficiency while maintaining manufacturability through established single crystal fabrication processes.
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 implementation of single crystal devices in wireless communication systems enhances thermal conductivity, reduces signal loss, and increases out-of-band rejection, resulting in improved linearity and performance in high power density environments.
Implementation Method 1
a first single crystal piezoelectric material layer formed overlying a substrate surface region
Implementation Method 2
improved thermal conductivity, low loss, and higher out-of-band rejection, enabling better performance in high power density applications
Data Source
AI summary
A system for a wireless communication infrastructure using single crystal devices. The wireless system can include a controller coupled to a power source, a signal processing module, and a plurality of transceiver modules. Each of the transceiver modules includes a transmit module configured on a transmit path and a receive module configured on a receive path. The transmit modules each include at least a transmit filter having one or more filter devices, while the receive modules each include at least a receive filter. Each of these filter devices includes a single crystal acoustic resonator device with at least a first electrode material, a single crystal material, and a second electrode material. Wireless infrastructures using the present single crystal technology perform better in high power density applications, enable higher out of band rejection (OOBR), and achieve higher linearity as well.