Inside Frequency Control

Quartz crystal oscillators are the high and mighty option for low phase noise and added frequency stability in circuit design. Yes, simple oscillators like those made with resistor-capacitor (RC) or inductor-capacitor (IC) resonators are fine for some circuits.

But if you're dealing with higher performance applications in the aerospace, military, and space industries, you're going to want a higher performance crystal oscillator that can maintain low phase noise and strong stability. Otherwise, you'll risk deviating from the very specific (and usually critical) center frequency selected for your design.

In this blog, we'll discuss how to measure low phase noise and how to maintain it in your applications.

RF engineers would love to get their hands on an ideal crystal oscillator circuit. 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, it's important to have a firm understanding of precise frequency stability. This will give you the tools to keep your applications performing optimally. But there's another problem...

Poor manufacturing environments can significantly reduce the performance quality of a pressure transducer. A failing pressure transducer will lead to problems with sensors and will provide inaccurate readings (or none at all).

A faulty pressure transducer can not only cause frustration and waste time, but it can also lead to unnecessary costs.

To prevent pressure transducer problems or failure from happening in the first place, let's take a look at seven pressure transducer troubleshooting methods to keep your transducers and sensors working great!

Do you know all about atomic clocks in space and how they work? If not, it's about TIME you do. (Haha. Ha. Ha...)

Timing is everything when it comes to GPS satellites and other space applications. Even just a one-microsecond error in timing can lead to an error of 300 meters on the ground. Because atomic clocks can maintain very precise timing, they're a great solution for GPS and other LEO satellites.

GPS disciplined oscillators (GPSDO) are some of today's most trusted and accurate sources of timing. These powerful devices (sometimes called GPS clocks) consist of a high-quality stable oscillator and a GPS receiver. The GPSDO works by disciplining (or steering) the oscillator output to a GPS device or GNSS satellite signal via a tracking loop.

Surface acoustic wave (SAW) filters offer a reduced size, weight, and cost compared to other filter technologies. There are many tradeoffs, however, that need to be considered when selecting a SAW filter for your system design.

What are SAW filters? What are some common SAW filter applications? How are SAW filters used for mobile communications? We'll answer these questions and more in this post.

“Good things come to those who wait,” as the saying goes, and while aging is a part of all life cycles, crystals shouldn’t age prematurely. The careful production stages and the time it takes to complete them are necessary to the efficient operation of OCXOs. 

One of the most common pieces of test equipment for any electronics lab is oscilloscopes.  Oscilloscopes, or o-scopes for short, are versatile pieces of test equipment that can be used in a multitude of different critical measurements.  While oscilloscopes are standard in almost every electronics lab, they come in many different shapes, sizes, and price points.

When trying to select the best oscilloscope for your electronics lab, it's important to understand which features drive the cost of the o-scope the most.  For example, one of the biggest cost drivers for oscilloscopes is the device's measurement bandwidth.  An o-scope that has a narrow bandwidth of 200 MHz can go for a few hundred dollars; however, a top-of-the-line oscilloscope with a measurement bandwidth of 1 GHz can go for almost $30,000!

We have done all the research and read all the reviews for more oscilloscopes than we'd be willing to admit.  We've done all this leg-work so you don't have to.  So without further ado, here is our list of the 3 best digital oscilloscopes for any budget.

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... especially the technology related to SDR. So we thought it was time for an update.

Like last time, we tried to include as much diversity in terms of prices, applications, frequencies, and ease of use.  Our hope is the perfect software defined radio for your application is on this list. 

From smartphones to satellite service, GPS and more, RF technology is a feature of modern life that is so ubiquitous that many of us simply take it for granted.

Radio frequency engineering continues to help drive the world across many applications in both the public and private sectors. But technology advances so fast, it’s sometimes hard to predict what the world will look like in just a few years. Back in 2000, how many people outside the industry would have guessed that within 10 years, they’d be watching streaming videos on their phone?