3D-encapsulated VHF MEMS resonator with high frequency stability and low vibration sensitivity

2019 ◽  
Vol 286 ◽  
pp. 123-132 ◽  
Author(s):  
Zeji Chen ◽  
Fengxiang Wang ◽  
Quan Yuan ◽  
Xiao Kan ◽  
Jinling Yang ◽  
...  
Keyword(s):  
High Frequency ◽  
Frequency Stability ◽  
Vibration Sensitivity ◽  
Mems Resonator

Improved cryogenic sapphire oscillator with exceptionally high frequency stability

2000 ◽  
Vol 36 (5) ◽  
pp. 480 ◽  
Author(s):  
S. Chang ◽  
A.G. Mann ◽  
A.N. Luiten
Keyword(s):  
High Frequency ◽  
Frequency Stability

2-µm Doppler lidar transmitter with high frequency stability and low chirp

2000 ◽  
Vol 25 (17) ◽  
pp. 1228 ◽  
Author(s):  
V. Wulfmeyer ◽  
M. Randall ◽  
A. Brewer ◽  
R. M. Hardesty
Keyword(s):  
High Frequency ◽  
Frequency Stability ◽  
Doppler Lidar

A Novel Piezoelectric RF-MEMS Resonator with Enhanced Quality Factor

2022 ◽  
Author(s):  
JINCHAO LI ◽  
Zeji Chen ◽  
Wenli Liu ◽  
Jinling Yang ◽  
Yinfang Zhu ◽  
...  
Keyword(s):  
Elastic Waves ◽  
High Frequency ◽  
Rf Mems ◽  
Comprehensive Analysis ◽  
Quality Factors ◽  
Piezoelectric Resonator ◽  
Front End ◽  
Rf Front End ◽  
Mems Resonator ◽  
Compact Size

Abstract This work presents a novel ultra-high frequency (UHF) Lamb mode Aluminum Nitride (AlN) piezoelectric resonator with enhanced quality factors (Q). With slots introduced in the vicinity of the tether support end, the elastic waves leaking from the tether sidewalls can be reflected, which effectively reduces the anchor loss while retaining size compactness and mechanical robustness. Comprehensive analysis was carried out to provide helpful guidance for obtaining optimal slot designs. For various resonators with frequencies ranging from 630 MHz to 1.97 GHz, promising Q enhancements up to 2 times have all been achieved. The 1.97 GHz resonator implemented excellent f × Q product up to 6.72 × 1012 and low motional resistance down to 340 Ω, which is one of the highest performances among the reported devices. The devices with enhanced Q values as well as compact size could have potential application in advanced RF front end transceivers.

LRI Instrument status talk

2020 ◽  
Author(s):  
Samuel Francis
Keyword(s):  
High Frequency ◽  
Laser Frequency ◽  
Frequency Stability ◽  
Current Status ◽  
Range Measurement ◽  
Best Estimate

<p>In this talk, the current status of the LRI instrument will be presented. Topics will include laser frequency stability since launch, current best estimate of the noises in the LRI range spectra, and a look at some high-frequency signals visible in the LRI range measurement.</p>

High-frequency-stability diode-pumped Nd:YAG lasers with the FM sidebands method and Doppler-free iodine lines at 532 nm

1999 ◽  
Vol 38 (33) ◽  
pp. 6962 ◽  
Author(s):  
Gianluca Galzerano ◽  
Cesare Svelto ◽  
Elio Bava ◽  
Fabrizio Bertinetto
Keyword(s):  
High Frequency ◽  
Frequency Stability ◽  
Nd:Yag Lasers ◽  
Free Iodine ◽  
Diode Pumped ◽  
532 Nm

High-Frequency Stability of Detonations and Turning Points at Infinity

2015 ◽  
Vol 47 (3) ◽  
pp. 1800-1878 ◽  
Author(s):  
Olivier Lafitte ◽  
Mark Williams ◽  
Kevin Zumbrun
Keyword(s):  
High Frequency ◽  
Turning Points ◽  
Frequency Stability

Atomic fountain clock with very high frequency stability employing a pulse-tube-cryocooled sapphire oscillator

2014 ◽  
Vol 61 (9) ◽  
pp. 1463-1469 ◽  
Author(s):  
Akifumi Takamizawa ◽  
Shinya Yanagimachi ◽  
Takehiko Tanabe ◽  
Ken Hagimoto ◽  
Iku Hirano ◽  
...  
Keyword(s):  
High Frequency ◽  
Frequency Stability ◽  
Pulse Tube ◽  
Very High Frequency ◽  
Atomic Fountain ◽  
Very High
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