| 摘要 |
A microwave filter having a narrow bandstop within its passband, comprises a first set of resonant cavities (21 to 28) coupled together in series between an input (IN) and an output (OUT), to form a bandpass filter, and a second set of resonant cavities (31 to 38) coupled in shunt manner to respective cavities of the first set, to define the bandstop. |
