For Immediate Release
April 1, 2020
Bliley Partners with Penn State Behrend and Case Western to Distribute COVID-19 Face Shields
Three Erie companies will manufacture the shields, creating 5,000 every day
Bliley Technologies has partnered with researchers at Penn State Behrend and Case Western Reserve University to fulfill and distribute a face shield for medical professionals who are treating patients who have the COVID-19 virus. They expect to produce nearly 240,000 shields.
Maintaining strong frequency stability in electronic RF circuits by eliminating phase noise is important in many high-end communication applications. This is especially true for precise targeting in radar systems and spectral purity in other communication systems.
Let's take a deep dive into exactly what phase noise and jitter mean. This will help give you a better idea as to why reducing a system's phase noise is significant.
What Is Phase Noise?
In the simplest terms, phase noise describes the stability of an oscillator in the Frequency Domain, while jitter describes stability in the Time Domain.
A Simple 5-Step Path to Understanding Phase Noise
Step 1: Spectral Density
Step 2: When plotting each spectral density point at varied frequency intervals of your choosing (In this case every 1Hz), you're left with a graph that looks like this:
Step 2: Signal Power Density
You are now looking at what is known as the Signal Power Density of the noise.
Now focus only on the upper sideband of the graph from fstart to fstop, this is called the "Single Side Band".
Step 3: Noise Power Density
We can now refer to the plotted part of the single side band as noise (Anything above the nominal oscillator frequency (Fosc) and not harmonically related can be considered phase noise). The technical term for this part of our graph is Noise Power Density (Step 3). We measure noise power density in dBW (LOG(Watts)) at this point because of the large range which we are looking.
Step 4: SSB Noise Density
Step 5: Phase Noise
What Causes Phase Noise?
- High vibrations
- Micro vibrations
- g forces and acceleration sensitivity
What's Next? Learn How to Achieve Low Phase Noise...
Back in 2016, we wrote one of our most popular posts covering 12 popular Software Defined Radios or SDRs. While the previous post still holds some extremely valuable information, a lot has changed in 3 years... especially the technology related to SDRs. So we thought it was time for an update.
Finding the Best Performing Engineering Laptop
Our engineering team at Bliley is growing, which is great, but it also introduces some new challenges for small business like ours... finding the best performing engineering laptops for our engineers.
We want to give our engineers the best tools available and create an environment where they can be their most innovative and do the best work of their careers. Of course, a key to this whole equation is the technology they use day-to-day to get those next generations products designed. We recently kicked off a search for the best laptops that are perfect for engineering workloads. As you can probably imagine, the ideal laptop for an engineer needs to have great compute and graphics power.
RF and Microwave Design can be ENJOYABLE...
Don't believe me? Many of us already know how designing can easily become extremely long, boring, and tedious. This is especially true for all you RF and Microwave Design Engineers!
Spending hours upon hours designing, finding problems, fixing problems, then repeating the process all over again...It all can become so mentally draining.
Am I bringing back bad memories? Sorry, time for the good news...
So how can you make the long and tedious design process easy (and possibly even enjoyable)?
You guessed it... Automation and design tools are key.
Having some great CAD tools on your side can release a significant burden off your back. These tools can save you time and dramatically increase your productivity. Our Top 4 Productivity and collaboration tools will help skyrocket your productivity even further.
Today, we thought we'd help you out by sharing these 18 CAD design tools that can lead to a more simple & enjoyable design session.
Without further adu, here is our list of engineering thought leaders that you should be following on Twitter.
As electronics and RF systems have become increasingly complex, the need to catch and fix errors during the design phase of a project has become increasingly important.
Catching an error during the design phase is orders of magnitude less expensive to fix than catching it during the manufacturing or test phases.
RF engineers would love to get their hands on ideal crystal oscillator circuits. That is, a quartz crystal oscillator that transmits at the designated frequency for the entire life of the device without any frequency deviation. Unfortunately, that ideal circuit world is a mathematical fantasy.
There are many factors that contribute to quartz oscillator stability and frequency drift issues. To prevent these problems as much as possible, having a firm understanding of precise frequency stability will help give you the tools to keep your applications performing optimally. But there's another problem...
Topics: Press Release