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Oscillators

An oscillator is a device that produces electricity periodically in a stable manner. Oscillators are necessary components of electronics and are widely used in radio, television, radar, and other communication systems as signal sources. This article will discuss the application field and working principle of BT-300.000MBC-T.

Application Field

BT-300.000MBC-T oscillator is a high-performance voltage-controlled oscillator developed by Beijing TSMC Technology Co., Ltd.. It is widely used in radio and television broadcasting, mobile communications, microwave communication, radar, navigation and other fields. It has the characteristics of small size, fast settling time, low phase noise, low profile, and good temperature stability. This ensures that it can provide excellent wireless communication performance in digital base station. It uses a crystal resonator as its structural basis to ensure stability. It also has 5V voltage control capabilities for frequency output adjustment.

Working Principle

The BT-300.000MBC-T oscillator consists of an oscillator circuit and a crystal resonator. The oscillator circuit has a voltage amplification, impedance conversion, frequency control and other functions. They constitute the output signal of the oscillator. The output of the oscillator is used to maintain the vibration characteristics of the crystal resonator.

The oscillator circuit can be divided into two parts: the resonator circuit and the control circuit. The resonator circuit consists of an amplifier and a resonant circuit. The amplifier is used to amplify the voltage to match the frequency of the oscillator. The resonant circuit includes a voltage-controlled variable-tuned resistor and a capacitor connected in parallel. The resistor and capacitor form an LC oscillation circuit, in which the capacitor provides the frequency of the oscillator, and the resistor adjusts the frequency to meet the frequency requirements. The control circuit includes the voltage controller and the frequency divider. The voltage control varies the voltage of the capacitor and adjusts the frequency of the oscillation circuit. The frequency divider converts the output signal into the desired frequency of the oscillator.

This combination of oscillator circuit and crystal resonator can provide a signal source with stable and low phase noise output, and it can be used to meet the needs of ground and airborne digital base station applications.

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