Oscillators : ASV-40.000MHZ-E-T Application Field and Working Principle

Oscillators are the integral part of many radio systems, applications, and circuits. They provide a radio frequency reference source that is usually signal-specific and crucial in applications ranging from radio transmitters and receivers, to signal-processing systems and computer networks. Oscillators are typically used to generate a periodic or near periodic signal and are usually characterized as either a linear or anharmonic system. The ASV-40.000MHZ-E-T is a representative of these two categories. This article examines the application field and working principle of the ASV-40.000MHZ-E-T.

Application Field

The ASV-40.000MHZ-E-T is a type of voltage controlled oscillator (VCO) designed for radio systems, applications, and circuits which require high frequency stability. It can reach the maximum output frequency of up to 40MHz. The ASV-40.000MHZ-E-T features a fast start-up response, and a wide frequency fluctuation resonance range. As it operates on only a fraction of the power requirement of larger sized, more expensive oscillators, the ASV-40.000MHZ-E-T is very suitable for amateur radio, mobile phone, broadcast radio and other home applications, as well as complex signal processing systems and networks.

Working Principle

The ASV-40.000MHZ-E-T uses a voltage control oscillator (VCO) combined with an oscillator amplifier to form a frequency range system, with a stable output signal and low power consumption. In the principle of its operation, a low frequency DC voltage is applied to the input of the VCO. This voltage is passed to the oscillator amplifier, which boosts the signal to the frequency band necessary to achieve the desired output frequency. The frequency output is then designed to be adjustable within the range of the set frequency. The output signal is also stabilized and filtered, so its harmonics are prevented from reaching the output frequency.

Stability

The ASV-40.000MHZ-E-T ensures supply voltage stability, output signal temperature stability and frequency drift stability. Frequency drift stability means that, with hybrid temperature compensated voltage controlled quartz oscillator module, the oscillator’s temperature will be stabilized, and the frequency drift rate during the heating changes will not exceed 0.1%. Supply voltage stability ensures that the oscillator is able to remain in stable frequency in the event of power supply variation or switch problem. In addition, output signal temperature stability refers to the oscillator’s capability to maintain a constant frequency even the temperature of its surrounding changes. This means that the ASV-40.000MHZ-E-T can work stably and reliably in more than 0.5 hours periods.

Electromagnetic Interference

The ASV-40.000MHZ-E-T is designed to eliminate the most common issue of high frequency related electromagnetic interference (EMI). To achieve this, the oscillator employs a number of measures to minimize radio frequency leakage, including metal shields, filter and isolation coupling system. These measures will not only improve the performance of the oscillator, but also meet the European Union EMC directive.

Conclusion

The ASV-40.000MHZ-E-T Oscillator is a reliable, cost-effective, and low power consuming solution for applications requiring high frequency stability. It offers a wide frequency fluctuation resonance range and efficient protection for EMI, while providing the user with a reliable and easy to use output signal without the need to manually adjust the output voltage. This makes the ASV-40.000MHZ-E-T an attractive solution for a wide variety of applications.