4dB attenuator with 100w power capacity

Abstract

The invention discloses a 4dB attenuator with a 100w power capacity. The attenuator comprises an aluminum nitride ceramic substrate 8.9mm in length, 5.7mm in width and 1.0mm in thickness. A silver paste back conduction layer is printed on the back of the aluminum nitride ceramic substrate. A sliver paste wire is printed on the front of the aluminum nitride ceramic substrate. The sliver paste wire is communicated with a whole circuit through black resistors printed. The areas of the black resistors are differed according to different absorbing powers. The black resistors are made by double silk-screen printing. The sliver paste back conduction layer and the sliver paste wire are communicated through end ground paste which is sliver paste. According to the design concept, the attenuator has the advantages that the fact that the attenuator attenuates power absorptions of the resistors from input to output is considered, the area of each resistor is defined, the trend of the sliver paste wire is optimized, standing wave of the circuit is improved, a precise attenuation is obtained by precisely correcting a resistance, indicators of the attenuator are all excellent, and the requirement for application in the existing 4G network is met.

Description

technical field [0001] The invention relates to a power attenuation sheet, in particular to a 4dB attenuation sheet with a power capacity of 100 watts. Background technique [0002] At present, most communication base stations use high-power ceramic load chips to absorb the reverse input power of communication components. High-power ceramic load chips can only simply consume and absorb excess power, but cannot monitor the working conditions of the base station in real time. When the base station fails, it cannot make a timely judgment and has no protective effect on the equipment. The attenuation sheet can not only absorb the reverse input power of the communication components in the communication base station, but also extract part of the signal in the communication components, and monitor the base station in real time, thus forming an effective protection for the equipment. [0003] As a power consumption component, the attenuator cannot affect the circuits at both ends, ...

AI Technical Summary

Problems solved by technology

At present, the attenuation accuracy of the domestic 100W-4dB aluminum nitride ceramic attenuator can only be within 1G frequency, and a few can achieve 2G, and the attenuation accuracy and the VSWR of the equipment are difficult to control, and the signal obtained at the output terminal is not good. Meet the actual requirements

Especially when the frequency band used by the attenuator is higher than 2G, its attenuation accuracy often fails to meet the requirements, and the return loss becomes larger, which cannot meet the application requirements of the frequency band above 2G

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