1-watt 8db attenuation piece for aluminum oxide ceramic substrate

Abstract

The invention discloses a 1-watt 8dB attenuation piece for an aluminum oxide ceramic substrate. The 1-watt 8dB attenuation piece comprises an aluminum oxide ceramic substrate with a size of 2*3.5*0.63mm, wherein the back surface of the aluminum oxide substrate is printed with a back conductive layer, the front surface of the aluminum oxide substrate is printed with a conducting wire and a resistor, and the conducting wire is connected with the resistor, so that an attenuation circuit is formed, the attenuation circuit is symmetrical along the centre line of the aluminum oxide substrate, an output end and an input end of the attenuation circuit are respectively connected with a welding disc, and the two welding discs are symmetrical along the centre line of the aluminum oxide substrate. A required attenuation value can be obtained by changing the size dimension and the surface resistivity of the resistance in the attenuation circuit, and the relatively good stationary wave characteristic can be obtained according to the design of the conducting wire. According to the attenuation piece, the resistance area can be enlarged, so that the high-temperature and low-temperature impact resistance of the attenuation piece can be enhanced, the quenching damage of the high temperature to the resistor when the output end is welded with a lead can be avoided, and the risk that the resistor is damaged during practical use caused by the quenching damage of the resistor can be avoided, so that the performance of the attenuation piece can be greatly improved, and the situation that the original attenuation piece is only applied to the low fluency condition can be broken, and therefore, the attenuation piece is applicable to a 2G-3G network.

Description

technical field [0001] The invention relates to an alumina ceramic attenuation sheet, in particular to an attenuation sheet with an alumina ceramic substrate of 1 watt and 8dB. Background technique [0002] At present, the attenuator integrated with three film resistors is widely used in aviation, aerospace, radar, radio, broadcast communication and other equipment fields. The use of a load chip can only simply consume and absorb excess power, while the use of an attenuator can absorb the reverse input power while extracting the required signal for analysis, and adjust the power level on the high-frequency circuit, decoupling, and related The device plays a protective role. [0003] Since the research and development and manufacture of similar products in foreign countries started earlier than domestic ones, they are in an advantageous position both in product series and product features. At the same time, the existing attenuators in the domestic market have low attenuatio...

AI Technical Summary

Problems solved by technology

When the attenuation accuracy or VSWR does not meet the requirements, the signal obtained at the output does not meet the actual requirements

Images