Audio frequency filter application of micromachined thermally-isolated diaphragm structures

Kwang Hyun Lee, Hee Jin Byun, Hyung Kew Lee, Il Joo Cho, Jong Uk Bu, Euisik Yoon

Research output: Contribution to conferencePaper

2 Citations (Scopus)

Abstract

This paper reports a new application of micromachined thermally-isolated diaphragm structures for audio frequency filters. We have used a pair of electrothermal elements that consist of a heater and a temperature sensor integrated in the same dielectric diaphragm for a good thermal coupling. The filters using the fabricated electrothermal structures with driving circuitry have been tested. Measured responses of the filters show that a cut-off frequency can be electrically tuned ranging from 30 Hz to 300 Hz. Design parameters with respect to filter characteristics have been analyzed and design guidelines have been identified. The results have demonstrated the possibility that the thermally-isolated diaphragm structures can be used for audio frequency filter applications.

Original languageEnglish
Pages142-147
Number of pages6
Publication statusPublished - 2000 Jan 1
Event13th Annual International Conference on Micro Electro Mechanical Systems (MEMS 2000) - Miyazaki, Jpn
Duration: 2000 Jan 232000 Jan 27

Conference

Conference13th Annual International Conference on Micro Electro Mechanical Systems (MEMS 2000)
CityMiyazaki, Jpn
Period00/1/2300/1/27

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Mechanical Engineering
  • Electrical and Electronic Engineering

Cite this

Lee, K. H., Byun, H. J., Lee, H. K., Cho, I. J., Bu, J. U., & Yoon, E. (2000). Audio frequency filter application of micromachined thermally-isolated diaphragm structures. 142-147. Paper presented at 13th Annual International Conference on Micro Electro Mechanical Systems (MEMS 2000), Miyazaki, Jpn, .