Industrial Consultancy & Sponsored Research (IC&SR) , IIT Madras
Asymmetric Phononic Crystal (PnC) Tethering for Radio Frequency (RF) Micro-electro-mechanical System (MEMS) Resonator
Categories for this Invention
Categories: Photonics | Electronics & Circuits | Chemistry & Chemical Analysis
Industry: MEMS Resonators, RF components & Phononic Crystals, Semiconductor & Electronics Manufacturing, Integrated & Standalone Devices
Applications: Wireless Communication Devices, Sensors and Measurement Equipment, 5G, IoT, Telecommunication Infrastructure, Advanced Research Instruments, Automotive, Consumer Electronics, Frequency Control Devices
Market: The MEMS resonator market is expected to grow from $ 2.4 Mn in 2021 to $ 4.9 Mn by 2028, at 8.23% CAGR from 2022 to 2028.
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Problem Statement
- Current resonators suffer Low Q-Factors and higher insertion losses, due to anchor losses, interfacial dissipation, & material losses in electrodes.
- Acoustic waves escaping through support tethers reduce the energy retention in resonators, impacting overall performance.
- Existing symmetric Phononic Crystal (PnC) designs shows a lot of drawbacks, prompting the need for an improved structure to contain acoustic wave leakage effectively.
- Hence there is a need of this instant patent disclosure to address above mentioned issues.
Technology
The present patent discloses an asymmetric Phononic Crystal (PnC) tethering for Radio Frequency (RF) Micro-electro-mechanical System (MEMS) Resonator, comprises:
- Two asymmetric unit cells including semicircular inclusions.
- The center of each semicircular inclusion is displaced from each other by a distance 2d.
- Each said asymmetric unit cell is repeated in same direction with a lattice constant ‘a’.
- The asymmetric unit cells with the lattice constant ‘a’ undergoes elastic waves scattering in the semicircular inclusions.
- The PnC tethering is attached to a resonator using a tapered connector.
Key Features / Value Proposition
User Perspective:
- Enhanced Device Performance
- Stability and Precision & Seamless Connectivity
Industrial Perspective:
- Competitive Advantage & Cost-Efficiency
- Reliable Wireless Communication Devices Across Consumer Electronics, Automotive, & Telecommunications Industries.
Technical Perspective:
- High Q-Factor Improvement
- Customizable Design with smaller size
- Integration Potential
- Effectively addresses anchor losses in MEMS resonators, leading to a significant improvement in the resonator’s Q-Factor.
- By containing acoustic wave leakage, it retains more energy in resonator, boosting its overall performance.
Questions about this Technology?
Contact For Licensing
sm-marketing@imail.iitm.ac.in
ipoffice2@iitm.ac.in
Research Lab
Prof. Amitava Das Gupta
Prof. Deleep R Nair
Department of Electrical Engineering
Intellectual Property
- IITM IDF No: 1337 | IP No.: 392423 (Granted)
- PCT No.: PCT/IN2017/050017
Technology Readiness Level
TRL – 4
Experimentally validated in lab.