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20W and 9dB attenuator with aluminium nitride ceramic baseplate

A technology of aluminum nitride ceramics and aluminum nitride substrates, which is applied in the direction of electrical components, circuits, waveguide devices, etc., can solve the problem that the impedance and attenuation accuracy deviate from the actual requirements, the attenuation accuracy cannot meet the requirements, and the high and low temperature shock resistance performance Poor and other problems, to achieve performance improvement, reduce defective products, and increase the impact resistance of high and low temperature

Inactive Publication Date: 2012-02-22
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

[0004] At present, due to design reasons, the attenuation accuracy of domestic 20W-9dB attenuators cannot meet the requirements, and the high and low temperature impact resistance is poor. After the high and low temperature impact test is completed, the impedance and attenuation accuracy will deviate from the actual required range.

Method used

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  • 20W and 9dB attenuator with aluminium nitride ceramic baseplate
  • 20W and 9dB attenuator with aluminium nitride ceramic baseplate

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Embodiment Construction

[0013] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0014] Such as figure 1 As shown, the 20-watt 9dB attenuator of the aluminum nitride ceramic substrate includes a 5*5*1MM aluminum nitride substrate 1. The back surface of the aluminum nitride substrate 1 is printed with a back conductive layer, and the front surface of the aluminum nitride substrate 1 is printed with Wire 2 and resistors R1, R2, R3, and 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 connected to ground. The attenuation circuit is symmetrical along the center line of the aluminum nitride substrate, the output end of the attenuation circuit is connected to a pad 5, the input end is connected to a pad 6, and the two pads 5 and 6 are symmetrical along the center...

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Abstract

The invention discloses a 20W and 9dB attenuator with an aluminium nitride ceramic baseplate. The attenuator comprises a 5*5*1mm aluminium nitride baseplate, wherein a back guide layer is printed at the back of the aluminium nitride baseplate; a wire and a resistor are printed on the front face of the aluminium nitride baseplate; the wire is connected with the resistor to form an attenuation circuit which is symmetrical relative to the central line of the aluminium nitride baseplate; and an output end and an input end of the attenuation circuit are respectively connected with a bonding pad, and the two bonding pads are symmetrical relative to the central line of the aluminium nitride baseplate. As the resistor area is enlarged, the high and low temperature impact resisting property of the attenuator is enhanced, thereby avoiding the hardening of the resistor caused by high temperature when a lead is welded at the output end, and then avoiding the risk of damage in practical use arising from the hardening of the resistor, therefore the property of the attenuator is greatly improved, the situation that attenuators in the prior art are only applicable to low frequency is changed and thus the attenuator can be used in 2G-3G (second generation-third generation) networks.

Description

Technical field [0001] The invention relates to an aluminum nitride ceramic attenuation sheet, in particular to an aluminum nitride ceramic substrate 20-watt 9dB attenuation sheet. Background technique [0002] The attenuator is to attenuate the large voltage signal to a certain proportional multiple (usually refers to the power attenuation) according to actual requirements, to achieve a safe or ideal level value, which is convenient for testing work, especially in radio frequency and microwave. Currently, most communication base stations are widely used The high-power ceramic load sheet is used to absorb the reverse input power of the communication component. The high-power ceramic load sheet can only consume and absorb the excess power, and cannot monitor the working status of the base station in real time. When the base station fails It is unable to make a judgment in time and has no protective effect on the equipment. The attenuator can not only absorb the reverse input powe...

Claims

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Application Information

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