Attenuators are electronic components that provide attenuation and are widely used in electronic equipment.
The working principle of the attenuator:
An attenuator is a circuit used to introduce a predetermined attenuation within a specified frequency range. It is generally indicated by the decibels of the introduced attenuation and the ohms of its characteristic impedance. Attenuators are widely used in cable television systems to meet multi-port level requirements. Such as amplifier input, output level control, and branch attenuation control. There are two types of attenuators, passive attenuators, and active attenuators. The active attenuator cooperates with other thermal elements to form a variable attenuator, and the device is used in the automatic gain or slope control circuit in the amplifier. Passive attenuators include fixed attenuators and adjustable attenuators.
The working frequency band of the attenuator refers to the use of the attenuator in a given frequency range so that the attenuator can reach the target value. Since the RF/microwave structure is related to frequency, components in different frequency bands have different structures and cannot be used universally. The working frequency band used by modern coaxial attenuators is quite wide, so attention should be paid to the design or use.
The purpose of the attenuator:
The main uses of attenuators are:
1. Adjust the size of the signal in the circuit;
2. In the comparison method measurement circuit, it can be used to directly read the attenuation value of the network under test;
3. Improve impedance matching. If some circuits require a relatively stable load impedance, an attenuator can be inserted between the circuit and the actual load impedance to buffer impedance changes.
The above is about the introduction of the attenuator. As an attenuator manufacturer, CenRF specializes in RD and production of attenuators. If you are interested in attenuators, please pay attention to our website.
