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External equalization high-temperature super-conducting linear phase filter

A linear phase, high-temperature superconducting technology, applied in the direction of impedance network, electrical components, single-ended pair network, etc., can solve problems such as failure to achieve success and difficulty in debugging, and achieve the effect of reducing requirements and difficulty in tuning

Inactive Publication Date: 2015-04-29
XIAN ZAOXIN ELECTRONICS INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the difficulty of debugging the existing externally balanced linear phase filter, and propose an externally balanced high temperature superconducting linear phase filter that is easy to adjust
[0007] The present invention solves the technical problem that people have been eager to solve but have not been able to achieve success all the time

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  • External equalization high-temperature super-conducting linear phase filter
  • External equalization high-temperature super-conducting linear phase filter
  • External equalization high-temperature super-conducting linear phase filter

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Embodiment Construction

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] like figure 1 As shown, a kind of external equalization high temperature superconducting linear phase filter comprises a filter 1 that does not possess linear phase characteristics and a group delay equalizer 2 connected thereto, and the group delay equalizer 2 consists of a 3dB The electric bridge 21 is composed of two identical first-order reflection filters 22 , the input end of the radio frequency signal is located on the filter 1 , and the output end is located on the 3dB electric bridge 21 .

[0019] like figure 2 As shown, it is the equivalent circuit diagram of the first-order reflective filter 22. It can be seen from the figure that the first-order reflective filter consists of a transformer N with a transformation ratio of 1n, an equivalent capacitor C and an equivalent inductance L connected in series form a reson...

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Abstract

The invention relates to an external equalization high-temperature super-conducting linear phase filter, which comprises a filter without linear phase characteristics and a group delay equalizer connected with the filter, wherein the group delay equalizer consists of a 3dB electric bridge and two first-order reflecting filters which are the same; a radio frequency signal input end is positioned on the filter without the linear phase characteristics, and a radio frequency signal output end is positioned on the 3dB electric bridge. According to the external equalization high-temperature super-conducting linear phase filter, technical problems which are expected but failed to be solved by people all the time are solved.

Description

technical field [0001] The invention belongs to the technical field of communication, in particular to a filter widely used in the front end of a communication system receiver. Background technique [0002] For the filter subsystem of many communication systems, in addition to its amplitude-frequency characteristics, its phase characteristics (group delay characteristics) must also be concerned. In order to avoid signal distortion, the filter subsystem is often required to have the characteristics of equal group delay in a large area near the center frequency in the passband. We call the filter with equal group delay characteristics a linear phase filter. The implementation methods of linear phase filter can be divided into self-equalization method and external equalization method. Relatively speaking, the effective bandwidth that can be equalized by the external equalization method is larger. Its main realization idea is: after the filter without linear phase characterist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03H5/00
Inventor 不公告发明人
Owner XIAN ZAOXIN ELECTRONICS INFORMATION TECH