ASTXR-12-26.000MHZ-512883-T

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Oscillators

Oscillators are devices that generate repetitive electrical signals which keep changing periodically. Commonly used oscillators include ASXR-12-26.000MHZ-512883-T oscillators which are widely used in the communication and navigation industry. As the frequency of an oscillator directly affects the resolutions of the imaging or signals measured, it is necessary to select an oscillator that fits the overall design and achieves desired working accuracy.

Application Field

ASXR-12-26.000MHZ-512883-T oscillators are used in communication and navigation systems. Specifically, it is one of the most important components in global positioning system (GPS) applications. In those systems, the GPS receiver needs to use an oscillator to measure the time difference between different satellites in order to identify the location of the satellite and the user. Additionally, ASXR-12-26.000MHZ-512883-T oscillators are also used in communication networks, including satellites and cellular telephone networks. In order to ensure the accuracy of the signals, the signal processing and transmission should be done precisely under the control of the oscillator.

Working Principle

An ASXR-12-26.000MHZ-512883-T oscillator is a crystal unit produced by the precise tuning of the crystal resonator under certain conditions. Generally speaking, the oscillator works according to the piezoelectric effect of the crystal. More specifically, there are two transistors connected in the oscillator. When an AC electrical signal is applied to the poles of the crystal, mechanical vibration is induced, which reacts with the mechanical vibrations of the two transistors and causes the voltage between the two poles to become an alternating current. This alternating current maintains its fluctuation rate in a limited range and is used to be the signal.

In addition, two capacitances are laid outside the oscillator. The first capacitance is a parallel capacitor Plate with Printed Circuit Board(PCBƒ), which can ensure the stability and continuous operation of the oscillator’s frequency. The second one is a tuning capacitor, which works by precisely adjusting the resonant frequency of the crystal unit and the voltage gain of the transistor.

In short, an ASXR-12-26.000MHZ-512883-T oscillator is a precision component mainly used in communication and navigation jobs. With tuning power and precise components, it can measure time difference in order to accurately identify the location of a user or a satellite. Its working principle is mainly based on the piezoelectric effect of crystals and the transistors connected in the oscillator, as well as the two capacitances laid outside the oscillator.

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