Frequenzmultiplizierer

The Frequenzmultiplizierer is a type of electronic oscillator used in analog signal processing to generate high-frequency multiple signals from an input signal at a lower frequency. This device is commonly used in radio frequency (RF) applications, such as radio transmitters, to generate harmonics of the carrier frequency.

Basic Principle

----------------

The Frequenzmultiplizierer operates on the principle of frequency multiplication, where the input signal is applied to a circuit that generates multiple signals at integer multiples of the input frequency. The output signals are typically in the form of sine or cosine waves.

Design and Functionality

------------------------

The device consists of an amplifier stage and one or more frequency-selective components, such as inductors, capacitors, or crystal filters. The input signal is applied to the amplifier, which increases the amplitude of the signal. The frequency-selective component is tuned to resonate at specific frequencies, allowing the amplified input signal to pass through unattenuated, while the lower frequency components are attenuated.

The resulting output signals are sinusoids that have frequencies at integer multiples of the input frequency. For example, if the input frequency is 1 kHz, the output signals may be at 2 kHz, 3 kHz, 4 kHz, and so on. The Frequenzmultiplizierer is used in many applications where multiple signals at specific frequencies are required.

In the past, the device was commonly used in radio transmitters to generate the carrier frequency and its harmonics. However, the widespread use of digital signal processing techniques has largely replaced the Frequenzmultiplizierer in some applications.