PIEZOELECTRIC ACTIVE BAND FILTER Russian patent published in 1998 - IPC

Abstract RU 2117385 C1

FIELD: radio electronics; radio-receiver basic selection device. SUBSTANCE: filter is built around two operational amplifiers each incorporating four groups of M piezoelectric resonators and 4M switches. Device provides for implementing digital variation of intermediate frequency of band filter equivalent to double-section, four-resonator filter. EFFECT: improved economic efficiency. 1 dwg

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RU 2 117 385 C1

Authors

Jasinskij I.M.

Rjabokon' D.S.

Dates

1998-08-10—Published

1996-03-28—Filed