Technical specifications of coaxial attenuator

　　1. Working frequency band: The working frequency band of an attenuator refers to the use of the attenuator within a given frequency range to achieve the desired value. Due to the frequency dependence of RF/microwave structures, components in different frequency bands have different structures and cannot be used interchangeably. The working frequency band of modern coaxial attenuators is quite wide, and attention should be paid to their design or use.

　　2. Attenuation amount: Regardless of the mechanism and specific structure of power attenuation, a two port network can always be used to describe attenuators.

　　The power at the signal input end is P1, while the power at the output end is P2. The power attenuation of the attenuator is A (dB). If P1 and P2 are expressed in decibels and milliwatts (dBm), the relationship between the power at both ends is P2 (dBm)=P1 (dBm) - A (dB)

　　It can be seen that the attenuation amount describes the degree to which the power decreases after passing through the attenuator. The magnitude of attenuation is determined by the material and structure that make up the attenuator. The attenuation amount is measured in decibels, which facilitates the calculation of the overall performance indicators.

　　3. Power capacity: An attenuator is an energy consuming component that converts power consumption into heat. It can be imagined that once the material structure is determined, the power capacity of the attenuator is also determined. If the power that the attenuator is subjected to exceeds this limit, the attenuator will be burned out. When designing and using, the power capacity must be clearly defined.

　　4. Return loss: Return loss is the standing wave ratio of the attenuator, and it is required that the input and output standing wave ratios at both ends of the attenuator should be as small as possible. The attenuator we want is a power consuming component that cannot affect the two end circuits, that is to say, it is matched with both end circuits. When designing attenuators, this factor should be considered.

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