公开(公告)号：AU2998595A

公开(公告)日：1996-03-07

申请号：AU2998595

申请日：1995-06-26

Applicant: MOTOROLA INC

Inventor： HEINE DAVID ,  SOKOLA RAY ,  NEWELL MICHAEL

IPC: H01P1/205 ,  H01P1/20

Abstract: A filter (102) with an adjustable shunt zero. The filter (102) has a predetermined passband and stopband, and an input (104) and an output (106), and a variable reactance element (108) for adjusting the stopband frequency of maximum attenuation, also defined as a shunt zero, coupled to at least one of the input (104) and the output (106) of the filter (102), whereby the shunt zero is adjustable over a range of frequencies.

公开(公告)号：EP0723709A4

公开(公告)日：1996-12-27

申请号：EP95926113

申请日：1995-06-26

Applicant: MOTOROLA INC

Inventor： HEINE DAVID ,  SOKOLA RAY ,  NEWELL MICHAEL

IPC: H01P1/205 ,  H01P1/20

CPC classification number: H01P1/2056

Abstract: A filter (102) with an adjustable shunt zero. The filter (102) has a predetermined passband and stopband, and an input (104) and an output (106), and a variable reactance element (108) for adjusting the stopband frequency of maximum attenuation, also defined as a shunt zero, coupled to at least one of the input (104) and the output (106) of the filter (102), whereby the shunt zero is adjustable over a range of frequencies.