AX7DCF1-716.8000T

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Oscillators

Oscillators are electrical circuits which produce an output signal with a specific frequency. This frequency can be determined by either the components, or the external components connected to the oscillator.

The AX7DCF1-716.8000T is an oscillator, specifically designed to produce an output signal at 716.8000 MHz. It is a voltage controlled oscillator (VCO) using a varactor as the variable element of the oscillator. With this VCO, the amplitude, frequency and phase of the output signal can be adjusted with the use of an external voltage.

Application Field

The AX7DCF1-716.8000T oscillator is mainly used for cellular radio applications. It can generate signals with intermediate frequencies up to 350MHz, making it suitable for use with wireless communication systems. This includes operations in the 3G, 4G and 5G networks, as well as other wireless communication systems.

In addition to its use for wireless communication systems, this oscillator can also be used in other frequency conversion systems such as FM modulators, FM receivers, and frequency synthesizers. As the output frequency is stable and can be easily adjusted for each application, this oscillator is suitable for many different applications.

Working Principle

The AX7DCF1-716.8000T oscillator operates on the principle of phase-locked loops (PLL). A PLL is a type of feedback system, where the frequency of the output signal is kept constant, despite any changes in the input signal. This is accomplished by adjusting the PLL\'s loop response time, so that the output signal is always in phase with the input signal.

The PLL works as follows: an external voltage source is applied to the oscillator, which is then converted into an alternating electric current using a varactor diode. This alternating current is then used to drive an inductor, producing an oscillating voltage. This voltage is then amplified by an amplifier stage before being sent back to the input terminal of the inductor through a phase-shift network. The phase-shift network ensures that the output signal is always in phase with the input signal.

Once the output signal is in phase with the input signal, the voltage applied to the oscillator adjusts accordingly, and the oscillator maintains its constant output frequency. This allows the AX7DCF1-716.8000T oscillator to generate a stable output signal with a fixed frequency, despite any changes in the external voltage.

Conclusion

The AX7DCF1-716.8000T oscillator is a voltage controlled oscillator designed for cellular radio applications. It is able to generate a stable output signal at a fixed frequency, making it suitable for use in many different applications. Its main benefit is its ability to adjust the frequency and phase of the output signal with an external voltage.

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