Direct and integrated design method of band-pass filters

A band-pass filter and synthesis design technology, which is applied in the field of direct synthesis design of band-pass filters, can solve problems such as the inability to use comprehensive broadband filters, and achieve the effect of improving group delay characteristics
CN102708265AInactive Publication Date: 2012-10-03UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
UNIV OF ELECTRONICS SCI & TECH OF CHINA
Publication Date
2012-10-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a direct and integrated design method of band-pass filters. In order to overcome the defect that the coupling matrix derived from the traditional integrated design method of the generalized Chebyshev single-pass-band or multi-pass-band band-pass filters is only narrow-band approximation and can not be used for integrated band-pass filters, the method is available for integrating the generalized Chebyshev single-pass-band or multi-pass-band band-pass filters in a band-pass domain directly, and improving the group delay characteristic in the pass band of the filter by introducing a plurality of transmission zeros. The direct and integrated design method can be used for extracting a network matrix of the generalized Chebyshev band-pass filters of the transmission zeros which have any bandwidth and are positioned at any frequency; and the derived network matrix has practical physical significance, while the network matrix derived from the traditional scheme can be taken as a low-pass narrow-band approximation result of the network matrix derived by using the method disclosed by the invention. The whole method disclosed by the invention has the advantages of simpleness, fastness and accuracy.
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Description

Technical field

[0001] The invention relates to a filter synthesis design method in the field of communication technology, in particular to a direct synthesis design method of a band pass filter. Background technique

[0002] At present, the fields of mobile communication and wireless technology are in a period of rapid development. Various innovative mobile communication and wireless technologies continue to emerge and quickly enter commercial use. The application market is extremely active, and mobile and wireless technologies themselves are constantly innovating in rapid evolution. . As one of the indispensable key components in modern communication equipment, the radio frequency / microwave filter can effectively filter out various useless signals and noise signals, reduce signal interference between communication channels, and ensure the normal operation of communication equipment. Modern communication systems usually require filters to have good frequency selectivity and oth...

Claims

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