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公开(公告)号：US10516378B2
公开(公告)日：2019-12-24
申请号：US16373025
申请日：2019-04-02
Applicant: Associated Universities, Inc.
Inventor： Matthew A. Morgan
Abstract: Reflectionless low-pass, high-pass, band-pass, band-stop, all-pass, all-stop, and multi-band filters, as well as a method for designing such filters is disclosed, along with a method of enhancing the performance of such filters through the use of unmatched sub-networks to realize an optimal frequency response, such as the Chebyshev equal-ripple response. These filters preferably function by absorbing the stop-band portion of the spectrum rather than reflecting it back to the source, which has significant advantages in many different applications. The unmatched sub-networks preferably offer additional degrees of freedom by which element values can be assigned to realize improved cutoff sharpness, stop-band rejection, or other measures of performance.
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公开(公告)号：US20190238109A1
公开(公告)日：2019-08-01
申请号：US16373025
申请日：2019-04-02
Applicant: Associated Universities, Inc.
Inventor： Matthew A. Morgan
CPC classification number: H03H7/06 , H01F38/14 , H01F2038/143 , H01P1/201 , H01P1/207 , H03H7/38 , H03H7/42 , H03H7/46
Abstract: Reflectionless low-pass, high-pass, band-pass, band-stop, all-pass, all-stop, and multi-band filters, as well as a method for designing such filters is disclosed, along with a method of enhancing the performance of such filters through the use of unmatched sub-networks to realize an optimal frequency response, such as the Chebyshev equal-ripple response. These filters preferably function by absorbing the stop-band portion of the spectrum rather than reflecting it back to the source, which has significant advantages in many different applications. The unmatched sub-networks preferably offer additional degrees of freedom by which element values can be assigned to realize improved cutoff sharpness, stop-band rejection, or other measures of performance.
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公开(公告)号：US10530321B2
公开(公告)日：2020-01-07
申请号：US16372626
申请日：2019-04-02
Applicant: Associated Universities, Inc.
Inventor： Matthew A. Morgan
Abstract: Reflectionless electronic filters, as well as a method for designing such filters is disclosed, along with a method of realizing critical subcircuits within those filters that mimic the behavior of tee- and pi-networks having negative elements, though the critical subcircuits themselves are entirely passive. This allows a much broader range of transmission responses to be realized in reflectionless form than in the prior art, and especially with lower ripple factor for deeper rejection in equal-ripple Chebyshev responses. Reflectionless filters preferably function by absorbing the stop-band portion of the spectrum rather than reflecting it back to the source, which has significant advantages in many different applications.
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公开(公告)号：US20190229696A1
公开(公告)日：2019-07-25
申请号：US16372626
申请日：2019-04-02
Applicant: Associated Universities, Inc.
Inventor： Matthew A. Morgan
Abstract: Reflectionless electronic filters, as well as a method for designing such filters is disclosed, along with a method of realizing critical subcircuits within those filters that mimic the behavior of tee- and pi-networks having negative elements, though the critical subcircuits themselves are entirely passive. This allows a much broader range of transmission responses to be realized in reflectionless form than in the prior art, and especially with lower ripple factor for deeper rejection in equal-ripple Chebyshev responses. Reflectionless filters preferably function by absorbing the stop-band portion of the spectrum rather than reflecting it back to the source, which has significant advantages in many different applications.
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