PMID- 30307860
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20191120
IS  - 1525-8955 (Electronic)
IS  - 0885-3010 (Linking)
VI  - 66
IP  - 1
DP  - 2019 Jan
TI  - In-Phase and Quadrature Analysis for Amplitude and Frequency Modulations Due to 
      Vibrations on a Surface-Acoustic-Wave Resonator.
PG  - 91-100
LID - 10.1109/TUFFC.2018.2875588 [doi]
AB  - Surface-acoustic-wave resonators (SAWRs) have found widespread usage in various 
      modern consumer radio frequency (RF) communications electronics, such as cellular 
      phones, wireless devices, GPS devices, frequency control, and sensing 
      applications. External mechanical vibrations modify an SAWR relative dimensions 
      and the substrate's elastic properties, which alter the device's acoustic wave 
      propagation velocity and ultimately cause the SAWR RF response to change. 
      Detecting vibrations are desirable for dynamic strain or vibration sensing 
      applications, whereas external mechanical excitations can result in spurious 
      signals which compromise SAW-based filters and oscillators used in RF 
      communication, frequency control, and sensors targeting measurands such as 
      temperature and pressure. Therefore, understanding and characterizing the SAWR's 
      response to external vibration is relevant for establishing device operation, and 
      assisting in device design and packaging to either mitigate the impact of 
      vibrations for RF communications and frequency control or enhance the SAWR 
      response for sensor applications. This paper presents an in-phase and quadrature 
      demodulation technique (I-Q technique) to detect, quantify, and analyze the 
      effect of externally induced mechanical vibrations on an SAWR. The I-Q technique 
      disclosed reveals that the mechanical vibrations cause both frequency and 
      amplitude modulations of the SAWR RF response, which can be separated by this 
      technique. Furthermore, the procedure also allows the direct measurement of 
      vibration frequencies and vibration magnitude. The technique, measured results, 
      and analysis established here provide a better understanding of the impact of 
      external mechanical vibrations on an SAWR response, which is important in 
      contemporary communications, frequency control, and sensing applications.
FAU - Maskay, A
AU  - Maskay A
FAU - Hummels, Donald M
AU  - Hummels DM
FAU - Pereira Da Cunha, M
AU  - Pereira Da Cunha M
LA  - eng
PT  - Journal Article
PT  - Research Support, U.S. Gov't, Non-P.H.S.
DEP - 20181011
PL  - United States
TA  - IEEE Trans Ultrason Ferroelectr Freq Control
JT  - IEEE transactions on ultrasonics, ferroelectrics, and frequency control
JID - 9882735
EDAT- 2018/10/12 06:00
MHDA- 2018/10/12 06:01
CRDT- 2018/10/12 06:00
PHST- 2018/10/12 06:00 [pubmed]
PHST- 2018/10/12 06:01 [medline]
PHST- 2018/10/12 06:00 [entrez]
AID - 10.1109/TUFFC.2018.2875588 [doi]
PST - ppublish
SO  - IEEE Trans Ultrason Ferroelectr Freq Control. 2019 Jan;66(1):91-100. doi: 
      10.1109/TUFFC.2018.2875588. Epub 2018 Oct 11.