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Ultra-high precision, ultra-high reliability clock signal solution: YXC oven-controlled crystal oscillator
1、Overview of OCXO
An oven-controlled crystal oscillator (OCXO) is a high-performance oscillator that uses constant temperature box technology to accurately control the crystal oscillation frequency. By placing the crystal in a constant temperature environment, OCXO can greatly reduce the impact of ambient temperature changes on the oscillation frequency, thereby providing ultra-high frequency stability and accuracy. OCXO is widely used in high-tech fields such as communications, navigation, measuring instruments, military industry, aerospace, and power systems.
2、Working principle of OCXO
The working principle of the oven-controlled crystal oscillator is based on a constant temperature control system, which maintains the crystal at a constant temperature point through heating and feedback adjustment. The specific steps are as follows:
∅ Temperature sensor: Real-time monitoring of the temperature around the crystal oscillator.
∅ Heater: According to the feedback signal of the temperature sensor, adjust the power of the heater to maintain a constant temperature.
∅ Control circuit: Use a precise PID control algorithm to ensure that the heater works accurately when needed.
∅ Constant temperature environment: The crystal oscillator is placed in a constant temperature box to keep the working temperature constant and avoid frequency drift caused by external temperature fluctuations.
Through the above mechanism, OCXO can provide extremely high frequency stability and long-term reliability to meet the needs of various high-precision applications.
Schematic diagram of constant temperature tank
3、OCXO product features
The constant temperature crystal oscillator has the following characteristics:
1. Extremely high frequency stability: The frequency stability can usually reach the order of 10^-9, which is far higher than ordinary crystal oscillators.
2. Low phase noise: OCXO has low phase noise characteristics and is suitable for applications with extremely high signal purity requirements.
3. Long life: Select high-quality crystals and high-reliability components, the aging rate can reach the order of 10^-9, ensuring long-term stable operation.
4. Wide temperature range: Maintain high performance over a wide temperature range and adapt to various complex environments.
5. High precision: Provide a reliable frequency reference in high-precision time and frequency control applications.
6. Vibration and shock resistance: OCXO design includes vibration and shock resistance characteristics to ensure stable frequency output in harsh environments. This is particularly important for military, aerospace and industrial applications.
7. Short-term stability characteristics: OCXO has extremely high frequency stability in a short period of time and can maintain frequency stability under instantly changing environmental conditions. This is particularly critical in applications that require fast response.
4、Application fields
Oven-controlled crystal oscillators are widely used in the following fields:
1. Communication systems: used for frequency synthesis, signal generation and synchronization in base stations and satellite communication systems.
2. Navigation systems: as core components of global navigation satellite systems such as GPS and Beidou, they provide high-precision time references.
3. Test and measurement instruments: used for high-precision measuring instruments such as frequency meters and clock sources to ensure the accuracy and consistency of measurement results.
4. Medical equipment: in medical equipment with high-precision requirements, ensure signal stability and accuracy.
5. Military and aerospace: provide reliable frequency references in high-demand applications such as radar, electronic countermeasures, and missile guidance.
6. Power systems: in smart grids, synchronous clocks, and power monitoring systems, OCXO provides critical time synchronization and frequency reference functions. A stable frequency reference is essential for the reliable operation of the power system, which can effectively improve the stability and safety of the system and ensure the efficient operation of the power grid.
5、Common frequency points and applications
The common frequency points of constant temperature crystal oscillators and their corresponding applications are as follows:
1.10 MHz: widely used in test and measurement equipment, communication base stations and navigation systems as high-precision reference frequencies.
2.20 MHz: used in synchronization systems, network clocks and high-end communication equipment.
3.100 MHz: used in radar systems, high-speed data transmission and frequency synthesizers to provide a frequency source with high stability and low phase noise.
By selecting the appropriate frequency point and high-performance constant temperature crystal oscillator, users can significantly improve the overall performance and reliability of the system, ensuring that stable and accurate frequency signals can still be provided under various harsh conditions.
YXC constant temperature crystal oscillator products
Yangxing Technology YXC provides ultra-low phase noise, ultra-high stability, miniaturization, and national localization constant temperature crystal oscillators, and is committed to providing customers with the best quality products and customized services to meet various special application requirements.
