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Permanent Magnets and Electromechanical Control Systems for Spectroscopy and Low Field Communication.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Permanent Magnets and Electromechanical Control Systems for Spectroscopy and Low Field Communication./
作者:	Glickstein, Jarred S.
面頁冊數:	1 online resource (597 pages)
附註:	Source: Dissertations Abstracts International, Volume: 84-04, Section: B.
Contained By:	Dissertations Abstracts International84-04B.
標題:	Mechanics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30003957click for full text (PQDT)
ISBN:	9798351438283

Permanent Magnets and Electromechanical Control Systems for Spectroscopy and Low Field Communication.
Glickstein, Jarred S.

Permanent Magnets and Electromechanical Control Systems for Spectroscopy and Low Field Communication. - 1 online resource (597 pages)

Source: Dissertations Abstracts International, Volume: 84-04, Section: B.

Thesis (Ph.D.)--Case Western Reserve University, 2022.

Includes bibliographical references

This thesis shows that permanent magnets and electromechanical control systems can enable power-efficient, high-sensitivity, low-noise modalities for spectroscopy and wireless communication. Specifically I present two examples. The first is a radio frequency (RF) spectrometer which uses a detector cooled to 77 K to maximize measurement sensitivity, coupled with a minimally-intrusive network of active duplexers and mechanical contact switches to realize a reconfigurable series/parallel resonant network. I present a receiver which combines the highly sensitive analog frontend instrumentation with a mixed signal embedded system to monitor and control secondary processes. The cryogenic system increases the measurement signal to noise ratio (SNR) by a factor of 10x.The second example is an extremely low frequency (ELF) communication system which uses a mechanically-rotated dipole instead of an electrical antenna to generate the oscillating field of the transmitter. I show how a synchronous digital controller can maintain stable control over the dynamic process while a complementary embedded system modulates the set-point and monitors the channel. My transmitter achieves a power efficiency 7.6? greater than an equivalent electrical antenna in a device small enough to be moved by one person. I carrythe transmitter into a cave and demonstrate cave-to-surface message transmission through 15 m of rock and frozen soil in a real-world field test.I present each solution in the context of scientific and human motivation, and explore tradeoffs required to achieve design goals. Emphasis is also placed on whether there exists a position of harmony and balance, where one may reasonably proclaim the optimum implementation has been achieved. The receiver is relatively more complex than the transmitter in the case of RF spectroscopy. In the case of ELF communication it is the reverse.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9798351438283Subjects--Topical Terms:

525881
Mechanics.
Subjects--Index Terms:

Permanent magnetsIndex Terms--Genre/Form:

542853
Electronic books.

Permanent Magnets and Electromechanical Control Systems for Spectroscopy and Low Field Communication.
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504 $a Includes bibliographical references
520 $a This thesis shows that permanent magnets and electromechanical control systems can enable power-efficient, high-sensitivity, low-noise modalities for spectroscopy and wireless communication. Specifically I present two examples. The first is a radio frequency (RF) spectrometer which uses a detector cooled to 77 K to maximize measurement sensitivity, coupled with a minimally-intrusive network of active duplexers and mechanical contact switches to realize a reconfigurable series/parallel resonant network. I present a receiver which combines the highly sensitive analog frontend instrumentation with a mixed signal embedded system to monitor and control secondary processes. The cryogenic system increases the measurement signal to noise ratio (SNR) by a factor of 10x.The second example is an extremely low frequency (ELF) communication system which uses a mechanically-rotated dipole instead of an electrical antenna to generate the oscillating field of the transmitter. I show how a synchronous digital controller can maintain stable control over the dynamic process while a complementary embedded system modulates the set-point and monitors the channel. My transmitter achieves a power efficiency 7.6? greater than an equivalent electrical antenna in a device small enough to be moved by one person. I carrythe transmitter into a cave and demonstrate cave-to-surface message transmission through 15 m of rock and frozen soil in a real-world field test.I present each solution in the context of scientific and human motivation, and explore tradeoffs required to achieve design goals. Emphasis is also placed on whether there exists a position of harmony and balance, where one may reasonably proclaim the optimum implementation has been achieved. The receiver is relatively more complex than the transmitter in the case of RF spectroscopy. In the case of ELF communication it is the reverse.
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650 4 $a Engineering. $3 586835
650 4 $a Nuclear physics. $3 517741
650 4 $a Electrical engineering. $3 649834
650 4 $a Mechanical engineering. $3 649730
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653 $a Control systems
653 $a Spectroscopy
653 $a Low field communication
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773 0 $t Dissertations Abstracts International $g 84-04B.
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