東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Parametric Mixing and Amplification ...

Lu, Ting.

Linked to FindBook

Google Book

Amazon

博客來

Parametric Mixing and Amplification with Nonlinear Acoustics.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Parametric Mixing and Amplification with Nonlinear Acoustics./
Author:	Lu, Ting.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2021,
Description:	116 p.
Notes:	Source: Dissertations Abstracts International, Volume: 82-12, Section: B.
Contained By:	Dissertations Abstracts International82-12B.
Subject:	Electrical engineering. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28544405
ISBN:	9798516069130

Parametric Mixing and Amplification with Nonlinear Acoustics.
Lu, Ting.

Parametric Mixing and Amplification with Nonlinear Acoustics. - Ann Arbor : ProQuest Dissertations & Theses, 2021 - 116 p.

Source: Dissertations Abstracts International, Volume: 82-12, Section: B.

Thesis (Ph.D.)--University of California, Los Angeles, 2021.

This item must not be sold to any third party vendors.

The wireless industry has changed our lives in many different aspects in the past decade. As the communication technology develops, the complexity of our mobile RF front-end increases because of advanced communication standards. This requires next generation RF front-end to be more efficient and compact than presently available. Acoustic wave devices have been widely used for filters and diplexers in the radio frequency front-end module due to their excellent quality factor and small footprints at radio frequency. Acoustic duplexers offer great isolation for transmitting and receiving signals at closely spaced frequency bands in frequency division duplex communication systems. However, the exploitation of these acoustic wave technologies remains in the passive domain rather than active domain. This dissertation is to explore parametric mixing and amplification on the acoustic wave platform, with the aim to develop a new class of nonlinear acoustic components such as acoustic mixers providing orders of magnitude improvement in size, and novel acoustic resonators with enhanced and amplified performance. Firstly, the acoustic nonlinear transmission line concept is proposed using the analogy between electromagnetic wave and acoustic wave, i.e., parametric mixing is expected to happen in the nonlinear acoustic waveguide where the mechanical stiffness is modulated by the pump wave. This concept is proved using multi-physics finite element simulation and validated with analytical equations. Secondly, practical implementations of acoustic nonlinear transmission line using nonlinear materials including Barium Strontium Titanite (BST) and Aluminum Nitride (AlN) are investigated. Parametric mixing is observed in the BST coupled surface acoustic wave grating and in the AlN Lamb wave delay line. Comparing to BST implementation, AlN implementation demonstrates a higher nonlinear stiffness modulation under same power level and is more optimal for power efficient parametric mixing and amplification purpose. Lastly, a non-degenerate phase independent parametric Q-enhancement technique is explored and demonstrated on AlN Lamb wave resonators. This technique is implemented by parametrically pumping AlN material stiffness to realize a negative resistance seen at the signal path. A multi-resonance coupled nonlinear model is developed to simulate the parametric coupling of each resonance and extract the nonlinearity of AlN from experimental data. The device quality factor is boosted in both simulation and experiment with proper pump frequency and pump power. This dissertation presents a complete study of parametric mixing and amplification on the nonlinear acoustic platform, and it can be readily capitalized to develop nonlinear acoustic devices for future communication systems.

ISBN: 9798516069130Subjects--Topical Terms:

649834
Electrical engineering.
Subjects--Index Terms:

Nonlinear acoustics

Parametric Mixing and Amplification with Nonlinear Acoustics.
LDR:03913nmm a2200349 4500 001 2282418
005 20211001100844.5
008 220723s2021 ||||||||||||||||| ||eng d
020 $a 9798516069130
035 $a (MiAaPQ)AAI28544405
035 $a AAI28544405
040 $a MiAaPQ $c MiAaPQ
100 1 $a Lu, Ting. $3 1920011
245 1 0 $a Parametric Mixing and Amplification with Nonlinear Acoustics.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2021
300 $a 116 p.
500 $a Source: Dissertations Abstracts International, Volume: 82-12, Section: B.
500 $a Advisor: Wang, Yuanxun.
502 $a Thesis (Ph.D.)--University of California, Los Angeles, 2021.
506 $a This item must not be sold to any third party vendors.
520 $a The wireless industry has changed our lives in many different aspects in the past decade. As the communication technology develops, the complexity of our mobile RF front-end increases because of advanced communication standards. This requires next generation RF front-end to be more efficient and compact than presently available. Acoustic wave devices have been widely used for filters and diplexers in the radio frequency front-end module due to their excellent quality factor and small footprints at radio frequency. Acoustic duplexers offer great isolation for transmitting and receiving signals at closely spaced frequency bands in frequency division duplex communication systems. However, the exploitation of these acoustic wave technologies remains in the passive domain rather than active domain. This dissertation is to explore parametric mixing and amplification on the acoustic wave platform, with the aim to develop a new class of nonlinear acoustic components such as acoustic mixers providing orders of magnitude improvement in size, and novel acoustic resonators with enhanced and amplified performance. Firstly, the acoustic nonlinear transmission line concept is proposed using the analogy between electromagnetic wave and acoustic wave, i.e., parametric mixing is expected to happen in the nonlinear acoustic waveguide where the mechanical stiffness is modulated by the pump wave. This concept is proved using multi-physics finite element simulation and validated with analytical equations. Secondly, practical implementations of acoustic nonlinear transmission line using nonlinear materials including Barium Strontium Titanite (BST) and Aluminum Nitride (AlN) are investigated. Parametric mixing is observed in the BST coupled surface acoustic wave grating and in the AlN Lamb wave delay line. Comparing to BST implementation, AlN implementation demonstrates a higher nonlinear stiffness modulation under same power level and is more optimal for power efficient parametric mixing and amplification purpose. Lastly, a non-degenerate phase independent parametric Q-enhancement technique is explored and demonstrated on AlN Lamb wave resonators. This technique is implemented by parametrically pumping AlN material stiffness to realize a negative resistance seen at the signal path. A multi-resonance coupled nonlinear model is developed to simulate the parametric coupling of each resonance and extract the nonlinearity of AlN from experimental data. The device quality factor is boosted in both simulation and experiment with proper pump frequency and pump power. This dissertation presents a complete study of parametric mixing and amplification on the nonlinear acoustic platform, and it can be readily capitalized to develop nonlinear acoustic devices for future communication systems.
590 $a School code: 0031.
650 4 $a Electrical engineering. $3 649834
650 4 $a Acoustics. $3 879105
650 4 $a Electromagnetics. $3 3173223
653 $a Nonlinear acoustics
653 $a Parametric amplification
653 $a Radio frequency
690 $a 0544
690 $a 0986
690 $a 0607
710 2 $a University of California, Los Angeles. $b Electrical and Computer Engineering 0333. $3 3542511
773 0 $t Dissertations Abstracts International $g 82-12B.
790 $a 0031
791 $a Ph.D.
792 $a 2021
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28544405