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Inside Frequency Control

7 Key Factors of Crystal Oscillator Circuit Design

Posted by Rob Rutkowski on Nov 21, 2019 10:26:42 AM

There are 7 key factors of understanding successful crystal oscillator circuit design. These include

  1. Series circuit
  2. Load Capacitance
  3. Parallel Circuit
  4. Drive Level
  5. Frequency vs mode
  6. Design Considerations
  7. Negative Resistance
In this post, we're going to cover the basics of oscillator design and each of the 7 key components of great crystal oscillator circuit design.
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Topics: crystal oscillators

Warning! EFC Over-Specification May Be Costing You (Do this instead!)

Posted by Rob Rutkowski on Oct 2, 2019 11:14:09 AM

What if I told you that specifying more Electronic Frequency Control (EFC) than you need could actually be hurting you pocketbook? Well, it very well may be! Paying attention to whether your supplier is using AT cut vs SC cut crystals will help you save money in the long run with OCXOs.

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Topics: crystal oscillators, Clocks & Crystals, RF Technology

What The Heck is an OCXO Oscillator? (Facts & Functionality)

Posted by Rob Rutkowski on Aug 20, 2019 8:20:00 AM

Ahh the mysterious OCXO. What the heck is an OCXO anyway? What's it good for? When should you use one in your electronic system design? These questions and more will all be answered in this post.

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Topics: crystal oscillators, Clocks & Crystals

The Secret to Maintaining Low Phase Noise in Crystal Oscillator Circuits

Posted by Rob Rutkowski on May 22, 2019 9:06:00 AM

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

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Topics: crystal oscillators, RF Technology, Integrated RF

How to use Electronic Frequency Control to Enhance Crystal Oscillator Design

Posted by Rob Rutkowski on May 14, 2019 8:45:00 AM

Want to know what's better than a crystal oscillator? A crystal oscillator combined with Electronic Frequency Control (EFC). Of course, it really comes down to your specific application and what requirements you're looking for to determine if EFC would be a good addition to your crystal oscillator circuit design, and if so, which method is best for you.

There are 4 options to choose from when selecting an Electronic Frequency Control method for your crystal oscillator. These 4 options are

  1. Pulse Width Modulation & Low Pass Filter
  2. Reference RF Signal & Phase Locked Loop (PLL)
  3. Voltage Divide
  4. Digital-to-Analog Converter (DAC)

In this post, let's take a closer look at each option and compare the pros and cons between them.

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Topics: crystal oscillators, RF Technology

What are GPS Disciplined Oscillators (GPSDO)?

Posted by Rob Rutkowski on Mar 19, 2019 9:26:00 AM

GPS Disciplined Oscillators (GPSDO) are one 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

Searching for the Perfect Crystal Oscillator? Ask These 4 Key Questions

Posted by Rob Rutkowski on Feb 27, 2019 9:36:00 AM

The harsh truth is, selecting the wrong quartz crystal oscillator can quickly kill any design. With the wide variety of options and specs available in the market today, selecting the perfect crystal oscillator for your design can be a difficult and time consuming task.

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Topics: crystal oscillators

4 Hidden Mysteries of Quartz Crystal Oscillators

Posted by Rob Rutkowski on Feb 12, 2019 9:04:00 AM

 

The development of crystal oscillators has literally changed the world. Technically that can (and is) said about many things. But think about it! Without crystal oscillators, we may have never seen precision timing in clocks, wide and clear radio broadcasts, or important communication methods within military and space programs.

Imagine how different our world might be without these now commonplace technologies. 

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Topics: crystal oscillators

Communication With Aliens - Interstellar Messages in Deep Space

Posted by Rob Rutkowski on Jun 5, 2018 7:50:00 AM

We can't possibly be the only intelligent life-forms in this infinite universe, can we? I mean, there's still plenty of exploring to do in our own solar system let alone nearby stars, our entire galaxy, and surrounding galaxies. Will our current deep space communication efforts, like Voyager 1, ever stumble across alien life so us humans can say, "Hi! We're here!"? Or will it take so long that our messages would be more like, "Hi! We were here!"? 

Let's explore some current communication efforts to make contact with aliens and how they work.

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Topics: crystal oscillators, Space & Satellites

PARC - A Hub of Innovation

Posted by Bliley Technologies on Apr 10, 2018 7:46:00 AM

Bliley Technologies is proud to be partnered with PARC, the Palo Alto Research Center, a leading hub of innovation in a wide range of cutting-edge 21st-century technologies. PARC has deep expertise in the high-tech fields of big data, optoelectronics, semiconductors, large area electronics, model-based reasoning for AI, and is a pioneer in the field of ubiquitous and context-aware computing.

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Topics: crystal oscillators, general