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1w 28DB attenuating plate for high heat-conductivity aluminum oxide ceramic substrate

A technology of alumina ceramics and ceramic substrates, applied in waveguide devices, electrical components, circuits, etc., can solve problems such as signals not meeting actual requirements, achieve improved stability, increase high and low temperature impact resistance, and standing wave characteristics Good results

Inactive Publication Date: 2012-10-03
苏州市新诚氏通讯电子股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • 1w 28DB attenuating plate for high heat-conductivity aluminum oxide ceramic substrate

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Embodiment Construction

[0012] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0013] Such as figure 1 As shown, the alumina ceramic substrate 1 watt 28dB attenuator includes a 2*3.5*0.635MM alumina substrate 1, the back of the alumina substrate 1 is printed with a back guide layer, and the front of the alumina substrate 1 is printed with high-temperature silver paste Wire 2 and film resistors R1, R2, R3, film resistors R1, R2, R3 are connected by wires to form an attenuation circuit, and the attenuation circuit is electrically connected to the back conductive layer through silver paste, so that the attenuation circuit is grounded. The attenuation circuit is symmetrical along the center line of the alumina substrate. The high temperature protective film 3 formed by secondary sintering is printed on the film resistors R1, R2, R3, and the upper surface of the wire 2 and the high temperature protective film 3 formed by sec...

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Abstract

The invention discloses a 1w 28DB attenuating plate for high heat-conductivity aluminum oxide ceramic substrate; the attenuating plate comprises a ceramic substrate with a high thermal conductivity factor, wherein the ceramic substrate is made of aluminum oxide ceramic; the ceramic substrate is printed with two symmetrical pads, two leads are respectively drawn out from the two pads; a membrane-shaped resistor is printed between the leads and connected with the leads so as to form an attenuating circuit, wherein the attenuating value of the attenuating circuit is determined based on the fine resistance adjustment of the membrane-shaped resistor. Each performance index is sufficiently considered on design of the attenuating plate so as to make the attenuating plate non-inductive at high efficiency, so that the situation that the initial attenuating plate is applied to the low frequency only is broken, the application requirement of the current 3G (third-generation) network is met, and the series product line of the 1w fixed membrane-shaped resistor type attenuating plate is extended.

Description

technical field [0001] The invention relates to an alumina ceramic attenuation sheet, in particular to a 1 watt 28dB attenuation sheet for a high thermal conductivity alumina ceramic substrate. 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 characteristics. At the same time, the existing attenuators in the domestic ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/22
Inventor 陈建良
Owner 苏州市新诚氏通讯电子股份有限公司
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