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Microstrip step-by-step motion attenuator

A technology of step attenuators and attenuators, applied in impedance networks, electrical components, multi-terminal pair networks, etc., can solve the problems of limited frequency range, large volume, and high price, and achieve wide frequency range, small volume, and low manufacturing cost Effect

Inactive Publication Date: 2009-07-01
阎 跃军 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the existing step attenuator adopts a cavity structure, which is large in size, high in price, and limited in frequency range

Method used

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  • Microstrip step-by-step motion attenuator
  • Microstrip step-by-step motion attenuator
  • Microstrip step-by-step motion attenuator

Examples

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Embodiment Construction

[0080] see Picture 1-1 , which is the basic circuit diagram of the first embodiment of the microstrip step attenuator of the present invention. It is on a typical π-type attenuator circuit composed of resistors, a switch 14 is connected in parallel on the series resistor 41, a switch 15a is connected in series between the parallel resistor 51 and the common ground terminal 7, and the parallel resistor 52 and the common ground terminal 7 are connected in series with a circuit diagram of a switch 15b. For an attenuator, for the convenience of understanding, the resistance connected in series to the signal input and output circuit is generally called a series resistance, and the resistance connected in parallel between the signal input and output circuit and the common ground is called a parallel resistance. When the switch 14 is disconnected (OFF), the switches 15a, 15b are closed (ON). At this time, the microstrip step attenuator is a π-type attenuator, and a required attenuat...

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Abstract

The invention relates to a microstrip step attenuator, which comprises a base body, a signal input terminal, a signal output terminal, a common ground terminal, and at least one stage attenuator comprising series resistors and parallel resistors on the base body; a switch is connected in parallel with two ends of each of the series resistors, and a switch is connected in series with one end of each of the parallel resistors. Therefore, the variability of the attenuation is realized. The step attenuator is suitable for various high frequency and microwave circuits and systems, and has the characteristics of wide frequency band, small volume, simple manufacture and low cost.

Description

【Technical field】 [0001] The invention relates to an electronic and communication microstrip step attenuator, in particular to a microstrip step attenuator which can be used in various high-frequency and microwave circuits and systems. 【Background technique】 [0002] In the family of electronic components, variable attenuators are one of the basic components commonly used in circuits and systems. The existence of the variable attenuator makes the circuit production and system debugging more flexible and convenient. In circuits and systems below several hundred MHz, variable attenuators have been widely used. For example, in CATV system and microwave circuit system, it is used for testing, adjusting level, increasing isolation and so on. However, when the operating frequency is in a higher frequency band, the existing variable attenuator with a three-dimensional structure made of contact reeds, sliders, screw rods, etc. has large parasitic parameters and poor high-frequency...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03H7/24
Inventor 阎跃军阎跃鹏
Owner 阎 跃军