Q2-2014 Newsletter0 pages

Issue

02

Greenray Quarterly

April
2014

FREQUENCY CONTROL SOLUTIONS

This Issue
Since 1961 Greenray has
produced innovative, high
performance, frequency
control solutions for
Commercial, Military,
Aerospace, Communications and Instrumentation
markets. Design, Testing
and Production is carried
out at our facility in
Mechanicsburg, PA.

ENGINEERING TALK
On Phase Noise
Phase noise performance under vibration is a
major concern in many modern systems. Due
to the inherent acceleration sensitivity of
quartz, traditional crystal oscillators phase
noise performance degrades significantly in
vibratory environments. Greenray Industries
has patented a technology which utilizes two
crystals matched and arranged so that their
individual acceleration sensitivities cancel out.
These vibration compensated parts can achieve
acceleration sensitivities of <5x10-11/g.
Vibration compensated oscillators are available
as an XO, TCXO, or OCXO depending on the
applications temperature specification. This
technology is also available in a wide variety of
footprints and frequencies. The newest
addition to the vibration compensation family
is the T1307 which is Greenray Industries
smallest vibration compensated part with a
footprint of 9mm x 7mm.

Engineering Talk P. 1
Recently Published P. 1
New/Upcoming Product P. 2
Upcoming Events P. 3

RECENTLY PUBLISHED
Microwaves & RF magazine recently published “Manage Quartz Crystals Under
High Vibration” in their February edition.
This article was written by Greenray’s
Engineering Manager, Steve Fry.
“Minimizing noise under conditions of
high-vibration and acceleration may require understanding the effects those
environmental conditions have on crystal
resonators and oscillators.”
“Crystal oscillators have long been frequency sources with
excellent frequency stability, spectral purity, and low phase
noise. Unfortunately, a crystal oscillator’s noise performance
can be affected by vibration or other acceleration events in
the application environment. Even moderate levels of vibration can significantly affect a crystal oscillator’s low-noise
signal. Understanding the behavior of a crystal oscillator under various conditions of vibration and acceleration can help
improve the overall performance of an application that must
operate under those conditions.”
If you would like a finish reading this article please contact
Amanda at: asmith@greenrayindustries.com