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Inside Frequency Control

Bliley Technologies

Recent Posts

How Does a VCXO Work?

Posted by Bliley Technologies on Jun 29, 2023 9:00:00 AM

There are many different types of crystal oscillators. OCXOs, TCXOs, and VCXOs are some of the most common types of oscillators. Each have their own advantages and disadvantages. One of the core responsibilities of a lead RF engineer is to pick the oscillators that are an optimal fit for their designs and applications.

If you want to be able to fine-tune your frequency source and get a stable, dependable signal, a voltage-controlled crystal oscillator (VCXO) might be just the solution you’re looking for. Let’s explore the benefits of the VCXO and how you can put them to work in your designs.

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Topics: crystal oscillators

The Ultimate Guide to Understanding Phase Noise

Posted by Bliley Technologies on Jun 15, 2023 9:00:00 AM


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 the terms phase noise and jitter mean. This will help give you a better idea why reducing a system's phase noise is so important.

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Topics: engineering, crystal oscillators

What Are GPS Disciplined Oscillators (GPSDO)?

Posted by Bliley Technologies on Apr 27, 2023 9:00:00 AM

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.

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Topics: crystal oscillators, RF Technology, GPS & GNSS, Integrated RF, Defense & PNT

The Ultimate Guide to SAW Filters

Posted by Bliley Technologies on Apr 13, 2023 9:00:00 AM

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.

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Topics: RF Technology

Crystal Oscillators: The Beginner's Guide (OCXO, TCXO, VCXO, & Clocks)

Posted by Bliley Technologies on Mar 28, 2023 8:00:00 AM

We'll be honest, crystal oscillators aren't the easiest topic to understand. That's mostly because there's a wide variety of crystal oscillator types that do different things, in different ways, for different purposes. This is largely due to their almost endless applications. From satellite communications in space, to military & defense, to telecom and more... there are so many different needs for crystal oscillators. 

In this post, we'll cover the most common types of crystal oscillators, which include:

  • Oven controlled crystal oscillators (OCXO)
  • Temperature compensated oscillators (TCXO)
  • Voltage controlled oscillators (VCXO)
  • Clock oscillators (XO)
  • And some other key types within these categories

I know it sounds like a lot to cover, but don't worry! We're about to make things a whole lot easier for you. By the end of this post, you'll learn the basic uses, advantages, and limitations of each crystal oscillator type.

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Topics: crystal oscillators, Clocks & Crystals

3 Reasons to Order OCXOs in Large Batches

Posted by Bliley Technologies on Jan 16, 2023 8:00:00 AM

 

Virtually all electronic components benefit from mass production. As it turns out, it’s harder to benefit from buying a few parts compared to buying many. This is true for the production and ordering of Oven-Controlled Crystal Oscillators (OCXOs). There are several important advantages to buying these in bulk instead of in small quantities, including lower setup costs, shorter lead times, and reduced impact of supply chain issues. 

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Topics: crystal oscillators

Oscillator Aging: How Long Is an OCXO’s Shelf Life?

Posted by Bliley Technologies on Dec 19, 2022 8:00:00 AM

 

We’re often asked if it’s wise to purchase crystal oscillators in large batches, especially when commodity managers are aware all the oscillators might not be used right away. 

By nature, crystal oscillators are made of natural quartz material, which gives them a very long shelf life. In this article, we’ll take a look at why that is and how the stability of crystal oscillators gives them an indefinite shelf life.

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Topics: crystal oscillators

OCXO Lead Times Explained: How Aging Factors into OCXO Development

Posted by Bliley Technologies on Dec 5, 2022 8:00:00 AM

 

“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. 

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Topics: crystal oscillators, Clocks & Crystals, RF Technology

Crystal Aging and a Counter-Intuitive Tip to Improve System Performance

Posted by Bliley Technologies on Nov 23, 2022 9:00:00 AM
One of the most common configurations of a frequency control device or oscillator is one where the voltage is adjusted to maintain a frequency lock within the system. In these types of systems, frequency error related to the oscillator can have a detrimental effect on system performance. In the most extreme cases, it can actually result in complete system failure when a good frequency lock cannot be maintained.
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Topics: crystal oscillators, Clocks & Crystals

Top 18 CAD Tools for RF and Microwave Design Engineers

Posted by Bliley Technologies on Sep 27, 2022 9:00:00 AM

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.

**Related Post: Check out our picks for the 5 best laptops for engineers.**

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Topics: engineering, General Topics, general

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