NDLI: A Fast Method to Measure the Volume of a Large Cavity

Content Provider	IEEE Xplore Digital Library
Author	Qian Xu Yi Huang Lei Xing Zhihao Tian Zhouxiang Fei Liuji Zheng
Copyright Year	2013
Abstract	How to quickly and accurately measure the volume of a large cavity is challenging. This paper presents an efficient method to measure the volume of a large conducting cavity. The proposed method is based on statistical wave theory. By measuring the Q factor in the time and frequency domains, the volume of the cavity can be extracted. In the time domain, the Q factor can be extracted directly from the time domain response, while in the frequency domain, the Q factor depends on the volume of the cavity and the transferred power; the transferred power can be measured directly. By correcting the frequency domain Q with the radiation efficiency of antennas, the Q factors obtained from both the time and frequency domains are equal in a well-stirred chamber; this provides an opportunity to measure the volume of the cavity. Measurements are conducted to verify the proposed method. Although the measurement is conducted using electromagnetic waves, acoustic waves can also be used; in this case, the approach can be applied to any cavity, not limited to a conducting cavity. The advantages and the limitations of the proposed method are also discussed.
Starting Page	1555
Ending Page	1561
Page Count	7
File Size	11385472
File Format	PDF
ISSN	21693536
Volume Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Antenna measurements Cavity resonators Volume measurement Acoustic measurements Calibration Q-factor Statistical analysis Electromagnetics statistical acoustics cavity volume measurement statistical electromagnetics Cavity volume measurement
Content Type	Text
Resource Type	Article
Subject	Computer Science Engineering Materials Science

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