Symmetrical 2-Watt 10-dB attenuation piece
An attenuator, symmetrical technology, applied in the field of symmetrical 2W 10dB attenuator, can solve the problem that the signal does not meet the actual requirements, and achieve the effect of improved stability, good frequency characteristics, and small size
Inactive Publication Date: 2014-12-24
苏州市新诚氏通讯电子股份有限公司
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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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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 symmetrical 2W 10dB attenuator includes a 5.0*6.0*1MM alumina substrate 1, and a conductive layer is printed on the back of the alumina substrate 1, and the conductive layer is printed by printing silver paste. The front side of the alumina substrate 1 is printed with resistors R1, R2, R3, R4, R5 and silver paste wire 2, and the silver paste wire 2 connects the resistors R1, R2, R3, R4, R5 to form a π-shaped attenuation circuit. A protective glass film 3 is printed on the resistors R1, R2, R3, R4, and R5, and the protective glass film 3 is used to protect the resistors R1, R2, R3, R4, and R5. The upper surface of the whole circuit, that is, the silver paste conductor 2 and the glass protective film 3 is also printed with a black protective film 4, which can protect the entire circuit. The silver paste w...
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Abstract
The invention discloses a symmetrical 2-Watt 10-dB attenuation piece. The symmetrical 2-Watt 10-dB attenuation piece comprises an aluminum oxide substrate of 5.0*6.0*1 mm, a back guide layer is printed on the reverse face of the aluminum oxide substrate, a wire and a membrane resistor are printed on the obverse face of the aluminum oxide substrate, a multi-printing and one-sintering forming technology is adopted by the resistor, the phenomenon that the resistance value of the resistor changes as the resistor is sintered repeatedly is avoided, a high-temperature protective membrane is printed on the resistor, and high temperature is prevented from damaging the resistor in the accurate laser cutting process so as to ensure the adjustment precision. The attenuation piece gives full consideration to various performance indexes on the aspect of scheme design, high frequency and no inductance are achieved, the complexion that attenuation pieces can only be applied to the low frequency in the prior art is broken, the application requirements of the current 3G network can be met, and meanwhile the series production line of 2-Watt fixed membrane-shaped resistor-type attenuation pieces is extended.
Description
technical field [0001] The invention relates to an attenuation sheet, in particular to a symmetrical 2-watt 10dB attenuation sheet. Background technique [0002] At present, the attenuator integrated with five 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 market have low attenuation accuracy, and the usable frequency ba...
Claims
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IPC IPC(8): H01P1/22
Inventor 不公告发明人
Owner 苏州市新诚氏通讯电子股份有限公司