--- title: Inside Frequency Control | Bliley Technologies | Bliley Technologies (2) description: Bliley Technologies has been a leader in low phase frequency control products for more than 80 years. Our blog discusses radio frequency, electronic design, and industry news. (2) --- [![Bliley technologies](https://blog.bliley.com/hubfs/Logo_Files/Bliley-logo-dark-bgArtboard%202.svg "Bliley technologies")](https://www.bliley.com) - Solutions - [Blog](https://blog.bliley.com) - - [Buy Online](https://shop.bliley.com/) # Inside Frequency Control ## Bliley Technologies ![](https://blog.bliley.com/hs-fs/hubfs/Logo_Files/Bliley_Favicon.png?width=50&height=50&name=Bliley_Favicon.png) ### Recent Posts ## [Ka-Band & Ku-Band Systems: Basics & RF Design Considerations](https://blog.bliley.com/rf-design-considerations-for-ka-ku-band-systems) Posted by [Bliley Technologies](https://blog.bliley.com/author/bliley-technologies) on Jun 19, 2024 9:00:00 AM - [Tweet](https://twitter.com/share) [![](https://blog.bliley.com/hs-fs/hubfs/ka-band-ku-band-systems.jpg?width=441&height=245&name=ka-band-ku-band-systems.jpg)](https://blog.bliley.com/rf-design-considerations-for-ka-ku-band-systems) What's the difference between Ka-band and Ku-band systems? In this article, we explore what they are,  what sets them apart, the advantages of each, and the design considerations you should keep in mind.  [Read More](https://blog.bliley.com/rf-design-considerations-for-ka-ku-band-systems) 3 Comments [Click here to read/write comments](https://blog.bliley.com/rf-design-considerations-for-ka-ku-band-systems#comments-listing) Topics: [engineering](https://blog.bliley.com/topic/engineering), [crystal oscillators](https://blog.bliley.com/topic/crystal-oscillators), [RF Technology](https://blog.bliley.com/topic/rf-technology), [Space & Satellites](https://blog.bliley.com/topic/space-satellites) ## [The TCXO Oscillator: 5 Elements of Temperature Compensated Oscillators](https://blog.bliley.com/tcxo-5-elements-of-temperature-compensated-crystal-oscillators) Posted by [Bliley Technologies](https://blog.bliley.com/author/bliley-technologies) on May 31, 2024 8:15:00 AM - [Tweet](https://twitter.com/share) [![](https://blog.bliley.com/hs-fs/hubfs/Blog/Graphics/Understanding%20TCXO%20Oscillators.png?width=441&height=245&name=Understanding%20TCXO%20Oscillators.png)](https://blog.bliley.com/tcxo-5-elements-of-temperature-compensated-crystal-oscillators) The most common types of crystal oscillators in electrical and RF engineering include OCXOs, TCXOs, VCXOs, and clock oscillators. In this post, we'll be reviewing the basics of temperature compensated crystal oscillators (TCXOs). [Read More](https://blog.bliley.com/tcxo-5-elements-of-temperature-compensated-crystal-oscillators) 3 Comments [Click here to read/write comments](https://blog.bliley.com/tcxo-5-elements-of-temperature-compensated-crystal-oscillators#comments-listing) Topics: [crystal oscillators](https://blog.bliley.com/topic/crystal-oscillators), [Clocks & Crystals](https://blog.bliley.com/topic/clocks-crystals) ## [3 Types of OCXOs & How They Establish Precise Frequency Control](https://blog.bliley.com/precise-frequency-control-with-ocxo) Posted by [Bliley Technologies](https://blog.bliley.com/author/bliley-technologies) on May 16, 2024 9:00:00 AM - [Tweet](https://twitter.com/share) [![](https://blog.bliley.com/hs-fs/hubfs/3-types-of-ocxos.jpg?width=441&height=245&name=3-types-of-ocxos.jpg)](https://blog.bliley.com/precise-frequency-control-with-ocxo) Temperature variations are the most significant factor contributing to frequency drift in crystal oscillators. Other variables that affect frequency output, such as humidity and pressure, can be alleviated easily with a hermetically sealed packaging of the crystal in a vacuum or in an inert gas, such as nitrogen. But controlling temperature for precise frequency output in a crystal oscillator circuit requires a higher level of electronic RF design ingenuity. Enter: the oven controlled crystal oscillator (OCXO). In this post, we'll take a look at the **three types of OCXOs** available for RF engineers to meet individual design priorities such as frequency precision, warm-up time, crystal aging, and power consumption. [Read More](https://blog.bliley.com/precise-frequency-control-with-ocxo) 0 Comments [Click here to read/write comments](https://blog.bliley.com/precise-frequency-control-with-ocxo#comments-listing) Topics: [crystal oscillators](https://blog.bliley.com/topic/crystal-oscillators), [RF Technology](https://blog.bliley.com/topic/rf-technology) ## [The 3 P’s of Oscillator Pricing: How to Maximize Your ROI](https://blog.bliley.com/cost-drivers-of-oscillator-pricing) Posted by [Bliley Technologies](https://blog.bliley.com/author/bliley-technologies) on May 15, 2024 9:00:00 AM - [Tweet](https://twitter.com/share) [![](https://blog.bliley.com/hs-fs/hubfs/the-3-ps-of-oscillator-pricing-how-to-maximize-your-roi.jpg?width=441&height=245&name=the-3-ps-of-oscillator-pricing-how-to-maximize-your-roi.jpg)](https://blog.bliley.com/cost-drivers-of-oscillator-pricing) Oscillators have become indispensable in modern technology. They are the core component that makes RF engineering possible, and are crucial to cell phones, Wi-Fi, GPS, and so much more. The modern interconnected economy and daily life as we know it would grind to a halt if crystal oscillators were not abundant, well designed, and reasonably affordable. But what determines oscillator pricing? [Read More](https://blog.bliley.com/cost-drivers-of-oscillator-pricing) 0 Comments [Click here to read/write comments](https://blog.bliley.com/cost-drivers-of-oscillator-pricing#comments-listing) Topics: [crystal oscillators](https://blog.bliley.com/topic/crystal-oscillators) ## [The 2 Most Important Qualities of an Oven Controlled Crystal Oscillator (OCXO)](https://blog.bliley.com/the-2-most-important-qualities-of-an-ocxo) Posted by [Bliley Technologies](https://blog.bliley.com/author/bliley-technologies) on Apr 18, 2024 9:00:00 AM - [Tweet](https://twitter.com/share) [![](https://blog.bliley.com/hs-fs/hubfs/ocxo-qualities.png?width=441&height=245&name=ocxo-qualities.png)](https://blog.bliley.com/the-2-most-important-qualities-of-an-ocxo) If you're looking for an oven controlled crystal oscillator (OCXO), my guess is you're interested in the best possible quartz crystal oscillator for your application. Who wouldn't be?  [Read More](https://blog.bliley.com/the-2-most-important-qualities-of-an-ocxo) 0 Comments [Click here to read/write comments](https://blog.bliley.com/the-2-most-important-qualities-of-an-ocxo#comments-listing) Topics: [crystal oscillators](https://blog.bliley.com/topic/crystal-oscillators) ## [OCXO 101: Anatomy of an Oven Controlled Crystal Oscillator](https://blog.bliley.com/anatomy-of-an-ocxo-oven-controlled-crystal-oscillator) Posted by [Bliley Technologies](https://blog.bliley.com/author/bliley-technologies) on Dec 12, 2023 9:00:00 AM - [Tweet](https://twitter.com/share) [![](https://blog.bliley.com/hs-fs/hubfs/anatomy-of-ocxo_.jpg?width=441&height=245&name=anatomy-of-ocxo_.jpg)](https://blog.bliley.com/anatomy-of-an-ocxo-oven-controlled-crystal-oscillator) The oven controlled crystal oscillator (OCXO) is near the top of the food chain when it comes to quartz-based frequency control devices, superseded only by the mighty double oven crystal oscillator ([DOCXO](https://blog.bliley.com/the-double-oven-controlled-crystal-oscillator-when-to-use-it)). In this blog, we'll review the basics of how an OCXO works, the terms you need to know, how to determine the turning point, and the differences between AT and SC crystal cuts.  [Read More](https://blog.bliley.com/anatomy-of-an-ocxo-oven-controlled-crystal-oscillator) 5 Comments [Click here to read/write comments](https://blog.bliley.com/anatomy-of-an-ocxo-oven-controlled-crystal-oscillator#comments-listing) Topics: [engineering](https://blog.bliley.com/topic/engineering), [crystal oscillators](https://blog.bliley.com/topic/crystal-oscillators), [Clocks & Crystals](https://blog.bliley.com/topic/clocks-crystals) ## [Assured PNT: Going Beyond GPS Timing](https://blog.bliley.com/assured-pnt-going-beyond-gps-timing) Posted by [Bliley Technologies](https://blog.bliley.com/author/bliley-technologies) on Nov 30, 2023 9:00:00 AM - [Tweet](https://twitter.com/share) [![](https://blog.bliley.com/hs-fs/hubfs/assured-pnt-going-beyond-gps-timing.jpg?width=441&height=245&name=assured-pnt-going-beyond-gps-timing.jpg)](https://blog.bliley.com/assured-pnt-going-beyond-gps-timing) While GPS technology plays an important role in modern navigation, it's not perfect. Although GPS might perform well enough consumer usage, signal jamming or other disruptions present serious threats to military operations.  Enter assured positioning, navigation, and timing (A-PNT), new technology that enhances traditional GPS timing. Assured PNT uses additional sources to augment GPS and prevent vulnerabilities. Its goal is to ensure that accurate positioning, navigation, and timing (PNT) is always available. In this blog, we'll review GPS, its flaws, and other PNT systems (like the GNSS) and give you an overview of how [assured PNT technology](https://www.bliley.com/assured_positioning_navigation_timing_pnt_gps) uses other systems to improve effectiveness.  [Read More](https://blog.bliley.com/assured-pnt-going-beyond-gps-timing) 1 Comment [Click here to read/write comments](https://blog.bliley.com/assured-pnt-going-beyond-gps-timing#comments-listing) Topics: [GPS & GNSS](https://blog.bliley.com/topic/gps-gnss), [Defense & PNT](https://blog.bliley.com/topic/defense-pnt) ## [Crystal Cut Types: AT vs. SC Cut Performance Comparison](https://blog.bliley.com/crystal-cut-types-at-vs-sc) Posted by [Bliley Technologies](https://blog.bliley.com/author/bliley-technologies) on Nov 7, 2023 9:00:00 AM - [Tweet](https://twitter.com/share) [![](https://blog.bliley.com/hs-fs/hubfs/crystal-cut-types-at-vs-sc-cut-performance.jpg?width=441&height=245&name=crystal-cut-types-at-vs-sc-cut-performance.jpg)](https://blog.bliley.com/crystal-cut-types-at-vs-sc) Inside every quartz oscillator is something called a crystal blank. The crystal blank is the resonating element of the oscillator that, when subjected to a voltage potential, will begin to vibrate and oscillate at its fundamental frequency. The way the crystal blank is manufactured can have a significant impact on the oscillator's performance. In this blog, we'll be discussing how the orientation of the quartz when the crystal blank is cut can affect how your oscillator performs. [Read More](https://blog.bliley.com/crystal-cut-types-at-vs-sc) 6 Comments [Click here to read/write comments](https://blog.bliley.com/crystal-cut-types-at-vs-sc#comments-listing) Topics: [crystal oscillators](https://blog.bliley.com/topic/crystal-oscillators), [Clocks & Crystals](https://blog.bliley.com/topic/clocks-crystals) ## [Which Crystal Oscillator Output Signal Is Best for Your Application?](https://blog.bliley.com/crystal-oscillator-output) Posted by [Bliley Technologies](https://blog.bliley.com/author/bliley-technologies) on Oct 27, 2023 9:00:00 AM - [Tweet](https://twitter.com/share) [![](https://blog.bliley.com/hs-fs/hubfs/crystal-oscillator-output.jpg?width=441&height=245&name=crystal-oscillator-output.jpg)](https://blog.bliley.com/crystal-oscillator-output) Why is it important to choose the right crystal oscillator output signal? The output signal types of [crystal oscillators](https://blog.bliley.com/choosing-best-quartz-crystal-oscillator) can provide different benefits and drawbacks depending on what you're trying to accomplish with your product. With that said, it's important to understand signal types to avoid as much attenuating and distorting of your [clock signal](https://en.wikipedia.org/wiki/Clock_signal) as possible. You'll also want to be sure you're receiving more benefits than drawbacks from the signal to meet your specific design needs. [Read More](https://blog.bliley.com/crystal-oscillator-output) 4 Comments [Click here to read/write comments](https://blog.bliley.com/crystal-oscillator-output#comments-listing) Topics: [crystal oscillators](https://blog.bliley.com/topic/crystal-oscillators) ## [Phase Noise Measurement: How to Measure Phase Noise with a Crystal Oscillator](https://blog.bliley.com/measure-phase-noise-with-crystal-oscillator) Posted by [Bliley Technologies](https://blog.bliley.com/author/bliley-technologies) on Oct 20, 2023 9:00:00 AM - [Tweet](https://twitter.com/share) [![](https://blog.bliley.com/hs-fs/hubfs/Blog/How%20to%20Measure%20Phase%20Noise%20with%20a%20Crystal%20Oscillator.jpg?width=441&height=245&name=How%20to%20Measure%20Phase%20Noise%20with%20a%20Crystal%20Oscillator.jpg)](https://blog.bliley.com/measure-phase-noise-with-crystal-oscillator) In a perfect world, a crystal oscillator would generate a signal that remains steady, consistent, and clear with no deviations, for as long as that signal needs to be transmitted.  But in the real world, no crystal oscillator produces a 100% perfect signal. Even if the signal is very strong and clear, there will still be tiny, random fluctuations in its waveform. This phenomenon can be represented visually in the frequency domain as sidebands on either side of the carrier. These unwanted fluctuations are referred to as [phase noise](https://blog.bliley.com/ultimate-guide-to-phase-noise). In the blog, we'll explain why you need to measure phase noise, what the methods are for measuring it, and  [Read More](https://blog.bliley.com/measure-phase-noise-with-crystal-oscillator) 0 Comments [Click here to read/write comments](https://blog.bliley.com/measure-phase-noise-with-crystal-oscillator#comments-listing) Topics: [crystal oscillators](https://blog.bliley.com/topic/crystal-oscillators) [< Previous](https://blog.bliley.com/author/bliley-technologies/page/1) [All posts](https://blog.bliley.com/all) [next >](https://blog.bliley.com/author/bliley-technologies/page/3) Search for a Topic Search [![GPSDO Oscillator Infrastructure Ebook.png](https://blog.bliley.com/hs-fs/hubfs/Blog/GPSDO%20Oscillator%20Infrastructure%20Ebook.png?width=240&height=272&name=GPSDO%20Oscillator%20Infrastructure%20Ebook.png "GPSDO Oscillator Infrastructure Ebook.png")](https://resources.bliley.com/gpsdo-oscillator-white-paper-gps) ### Subscribe... get an eBook! ### Categories - [crystal oscillators (68)](https://blog.bliley.com/topic/crystal-oscillators) - [RF Technology (63)](https://blog.bliley.com/topic/rf-technology) - [Space & Satellites (43)](https://blog.bliley.com/topic/space-satellites) - [engineering (38)](https://blog.bliley.com/topic/engineering) - [general (38)](https://blog.bliley.com/topic/general) - [Defense & PNT (26)](https://blog.bliley.com/topic/defense-pnt) - [General Topics (26)](https://blog.bliley.com/topic/general-topics) - [Press Release (22)](https://blog.bliley.com/topic/press-release) - [Clocks & Crystals (20)](https://blog.bliley.com/topic/clocks-crystals) - [Military & Defense (17)](https://blog.bliley.com/topic/military-defense) - [aerospace (17)](https://blog.bliley.com/topic/aerospace) - [Leadership (16)](https://blog.bliley.com/topic/leadership) - [Integrated RF (14)](https://blog.bliley.com/topic/integrated-rf) - [GPS & GNSS (9)](https://blog.bliley.com/topic/gps-gnss) - [Engineering Equiptment (7)](https://blog.bliley.com/topic/engineering-equiptment) - [5G (6)](https://blog.bliley.com/topic/5g) - [IoT (6)](https://blog.bliley.com/topic/iot) - [Filters & Multiplexers (1)](https://blog.bliley.com/topic/filters-multiplexers) See all ### See What's Popular ### Most Recent [Creepy Radio Frequencies: The Scariest Sounds in Space](https://blog.bliley.com/creepy-sounds-from-space) posted on 8/30/21 6:30 AM ![creepy radio frequencies: the scariest sounds in space](https://blog.bliley.com/hs-fs/hubfs/creepy-radio-frequencies-the-scariest-sounds-in-space.jpg?width=100&height=50&name=creepy-radio-frequencies-the-scariest-sounds-in-space.jpg) [Clipped Sine Wave Oscillators: TCXOs & Their Common Applications](https://blog.bliley.com/clipped-sine-wave-oscillators-tcxos) posted on 8/30/21 6:30 AM ![clipped sine wave oscillators tcxos and their common applications](https://blog.bliley.com/hs-fs/hubfs/clipped-sine-wave-oscillators-tcxos-and-their-common-applications.jpg?width=100&height=50&name=clipped-sine-wave-oscillators-tcxos-and-their-common-applications.jpg) [RF PCB Design Considerations: RF Circuit Board Layout Guidelines](https://blog.bliley.com/rf-pcb-design) posted on 8/30/21 6:30 AM ![rf pcb design considerations rf circuit board layout guidelines](https://blog.bliley.com/hs-fs/hubfs/rf-pcb-design-considerations-rf-circuit-board-layout-guidelines.jpg?width=100&height=50&name=rf-pcb-design-considerations-rf-circuit-board-layout-guidelines.jpg) [3 Questions to Ask Before Choosing a Crystal Oscillator Manufacturer](https://blog.bliley.com/questions-for-crystal-oscillator-manufacturers) posted on 8/30/21 6:30 AM ![3 questions to ask before choosing a crystal oscillator manufacturer](https://blog.bliley.com/hs-fs/hubfs/3-questions-to-ask-before-choosing-a-crystal-oscillator-manufacturer.jpg?width=100&height=50&name=3-questions-to-ask-before-choosing-a-crystal-oscillator-manufacturer.jpg) [CMOS vs. LVCMOS: Which Is the Best Output Signal for Your Application?](https://blog.bliley.com/cmos-lvcmos-best-output-signal) posted on 8/30/21 6:30 AM ![cmos vs lvcmos which is the best output signal for your application](https://blog.bliley.com/hs-fs/hubfs/cmos-vs-lvcmos-which-is-the-best-output-signal-for-your-application.jpg?width=100&height=50&name=cmos-vs-lvcmos-which-is-the-best-output-signal-for-your-application.jpg) ##### Disclosure: This blog contains product affiliate links to help support the blog. 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