30-watt 7dB attenuator for aluminum nitride ceramic substrate
A technology of aluminum nitride ceramics and aluminum nitride substrates, applied in electrical components, circuits, waveguide devices, etc., can solve the problem that the attenuation accuracy cannot meet the requirements, can not meet the application requirements of frequency bands above 2G, and the return loss increases and other problems, to achieve the effect of convenience for customers, improvement of stability, and reduction of grounding process time.
Inactive Publication Date: 2012-10-10
苏州市新诚氏通讯电子股份有限公司
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Problems solved by technology
At present, when the frequency band used by the attenuator on the market is higher than 2G, the attenuation accuracy cannot 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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[0012] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0013] like figure 1 As shown, the aluminum nitride ceramic substrate 30W 7dB attenuator includes an aluminum nitride substrate 1 with a size of 5*5*1MM. Wires 2 and resistors R1, R2, R3 are printed. The resistors R1, R2, R3 are connected by wires to form an attenuation circuit. 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 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, 6 are symmetrical along the center line of the aluminum nitride substrate . A protective glass film 3 is printed on the resistors R1, R2, R3, and a black protective film 4 is printed on the upper surface ...
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Abstract
The invention discloses a 30-watt 7dB attenuator for an aluminum nitride ceramic substrate. The 30-watt 7dB attenuator comprises an aluminum nitride substrate with a size of 5*5*1MM, wherein a back conductor layer is printed on a back side of the aluminum nitride substrate; a lead and resistors are printed on a front side of the aluminum nitride substrate; the resistors are connected through the lead to form a TT type attenuation circuit which is symmetrical about a central line of the aluminum nitride substrate; and the attenuation circuit is designed by adopting single-side grounding. According to the design of the attenuator, various performance indexes are fully considered, high frequency and induction freeness are realized, the situation that an original attenuator is only applied to low frequency is broken through, the application requirement of a current 3G (3rd Generation) network can be met and a series production line of a 30-watt fixed resistance type attenuator is also extended.
Description
technical field [0001] The invention relates to an aluminum nitride ceramic substrate attenuation sheet, in particular to a 30W 7dB attenuation sheet for an aluminum nitride ceramic substrate. 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 to make a timely judgment, there is no protection for the equipment. The attenuator with three kinds of resistance designs can not only absorb the reverse input power of the communication components in the communication base station, but also adjust the power level and decoupling on the high frequency circuit, and protect the related equipment. [0003] Since aluminum nitride ceramics is still an emerging industry, there is no diversi...
Claims
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Inventor 陈建良
Owner 苏州市新诚氏通讯电子股份有限公司