Design and simulation of miniature ribbon microphones

Ming-Li Ke; Ray-Hua Horng; Yao-Cheng Tsai; Guan-Wei Chen; Chao-Chih Chang

doi:10.1117/1.3142971

1 April 2009 Design and simulation of miniature ribbon microphones

Ming-Li Ke, Ray-Hua Horng, Yao-Cheng Tsai, Guan-Wei Chen, Chao-Chih Chang

Journal of Micro/Nanolithography, MEMS, and MOEMS, Vol. 8, Issue 2, 021160 (April 2009). https://doi.org/10.1117/1.3142971

Abstract

Traditional ribbon microphones cannot be miniaturized owing to the sensitivity of the microphone in proportion to its ribbon length. A novel symmetrical voice coil instead of the traditional ribbon is proposed, designed, and optimized. The new structure of ribbon microphones was fabricated by microelectromechanical systems (MEMS) technology, which allows increasing the effective coil length while reducing the diaphragm dimension. The obtained results present a voice coil length of 77.5 mm under a limited ribbon length of 17 mm. Compared with the conventional ribbon microphones (with ribbon length 50 mm and voice coil length 50 mm), the diaphragm dimension was reduced but its effective length was increased by about 55%, from 50 mm to 77.5 mm. Moreover, the magnetic flux density in the air gap of the magnetic circuit by simulations and experiments is measured to be at 5.1 and 5 kG, respectively.

©(2009) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Ming-Li Ke, Ray-Hua Horng, Yao-Cheng Tsai, Guan-Wei Chen, and Chao-Chih Chang "Design and simulation of miniature ribbon microphones," Journal of Micro/Nanolithography, MEMS, and MOEMS 8(2), 021160 (1 April 2009). https://doi.org/10.1117/1.3142971

Published: 1 April 2009

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available