TB-18.432MBE-T

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Oscillators

Oscillators are circuits, which generate periodic signals on an output. Oscillators are useful for many applications, such as frequency synthesizers, clocks, timing circuits and communications systems. They are also used in many industrial and commercial products, such as computers, medical equipment, medical imaging systems and automated control systems. In this article, we will discuss the application field and the working principle of TB-18.432MBE-T.

Application Field

TB-18.432MBE-T is a frequency generator with a frequency range up to address up to 25th harmonic corresponding to over 18.432 MHz. It is mainly used in radio modulation, frequency adjustment, precision frequency measurement and various ultra-high frequency module applications. It is especially suitable for applications in microwave communication, satellite communication, radar and other fields. In terms of dimensions, this frequency generator is compact, has a handy size of 1928 mils, and has a frequency tuning range of 90 kHz at 18.432 MHz.

Working Principle

The TB-18.432MBE-T oscillator is built with an indirect frequency-tunable architecture. An external voltage source is used to directly control an internal analog multiplexer that in turn sets the center frequency of a Voltage-Controlled Oscillator (VCO). This analog multiplexer is tuned with an external control voltage to select the center frequency of the VCO. This allows for tuning the center frequency from 0.8 to 25 harmonics of the center frequency.

This oscillator includes an input amplifying circuit which amplifies the direct current control voltage from the external source to control the gain of the VCO’s gain-control circuitry. The gain-control transistor is used to control the amplitude and the duty cycle of the oscillator\'s output signal. This duty cycle can be adjusted to generate both non-sinusoidal signals like square and triangular waveforms.

The oscillator also has a pre-stored trimming waveform adjustment circuit. This circuit changes the characteristics of the control voltage from the external source to tailor the output. For example, a slightly higher control voltage may generate a smaller amplitude or shorter duty cycle, while a lower control voltage may generate a lower frequency. This type of control allows for fine tuning of the oscillator for different applications.

The oscillator is also equipped with a temperature compensation circuit. This circuit is designed to maintain the oscillation frequency across a wide temperature range. The oscillator also has a built-in amplifier stage allowing for a greater signal-to-noise ratio. Lastly, the oscillator provides enhanced protection to itself from external static electricity with its built-in protection circuit.

Conclusion

TB-18.432MBE-T is a frequency generator that is mainly used in radio modulation, frequency adjustment, precision frequency measurement and various ultra-high frequency module applications. It is especially suitable for applications in microwave communication, satellite communication, radar and other fields, and utilizes its indirect frequency-tunable architecture and external voltage source to directly control an internal analog multiplexer. It also includes a host of other features, including a pre-stored trimming waveform adjustment circuit, temperature compensation circuit, built-in amplifier stage and enhanced protection from external static electricity.

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