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Patent Searching and Data


Title:
METHOD TO DESIGN CERAMIC FILTERS WITH FINITE TRANSMISSION ZEROS
Document Type and Number:
WIPO Patent Application WO/2018/113557
Kind Code:
A1
Abstract:
An apparatus comprises a bandpass circuit having a passband frequency range, wherein the bandpass circuit includes a first building block circuit including one ceramic resonator circuit element, wherein the building block circuit is a one pole filter circuit and a transfer function of the first building block circuit includes one finite transmission zero, and wherein a transfer function of the bandpass circuit includes the finite transmission zero at one of a frequency lower than the passband frequency range or a frequency higher than the passband frequency range.

Inventors:
YI, Huairen (2330 Central Expressway, Santa Clara, CA, 95050, US)
MA, Zhengxiang (2330 Central Expressway, Santa Clara, CA, 95050, US)
Application Number:
CN2017/115778
Publication Date:
June 28, 2018
Filing Date:
December 13, 2017
Export Citation:
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Assignee:
HUAWEI TECHNOLOGIES CO., LTD. (Huawei Administration Building, Bantian Longgang Distric, Shenzhen Guangdong 9, 518129, CN)
International Classes:
H01P1/20; H03H7/12
Foreign References:
US5841330A1998-11-24
US20080252399A12008-10-16
US20060279380A12006-12-14
US20090189716A12009-07-30
US20090243762A12009-10-01
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