High-power 100-watt 11dB attenuation plate with aluminum nitride ceramic substrate

Abstract

The invention discloses a high-power 100-watt 11dB attenuation plate with an aluminum nitride ceramic substrate. The high-power 100-watt 11dB attenuation plate comprises the aluminum nitride ceramic substrate which is 5.7 mm wide, 8.9 mm long and 1 mm thick, a silver paste back conducting layer is printed on the back face of the aluminum nitride ceramic substrate, a silver paste wire and five black resistors are printed on the front face of the aluminum nitride ceramic substrate, the silver paste wire is connected with the resistors to form a TT type attenuation circuit, the five black resistors are respectively and correspondingly printed with a glass protecting film, and the five glass protecting films and the wire are printed with two protecting films. The high-precision thick film printing technology is adopted for the silver paste back conducting layer, the silver paste wire, the five black resistors, the glass protecting films and the two protecting films. According to the design thought of the attenuation plate, the circuit structure of an input end is optimized, standing waves of the input end are improved, and meanwhile a high-precision attenuation value is obtained by accurately modifying resistance values. The high-power 100-watt 11dB attenuation plate with the aluminum nitride ceramic substrate has various excellent indexes and meets the use requirements of a current 4G network.

Description

technical field [0001] The invention relates to an aluminum nitride ceramic substrate attenuator, in particular to a high-power aluminum nitride ceramic substrate 100W 11dB attenuator. 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 a...

AI Technical Summary

Problems solved by technology

At present, the attenuation accuracy of the domestic 100W-11dB 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 end 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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