YCChiou
Junior Member level 3
Hi all,
When we design the combline filter in microstrip technology, we usually can get one transmission zero at the higher edge of passband. How does it occur? I read the "wide-bandwidth combline filter with high selectivity" (please see the attached file), the author thought it is caused by inductive coupling between adjacent and non-adjacent resonators.
If the combline filer in microstrip structure is magnetic-dominant coupling circuit so that it usually has a zero at higher band?
Also, when we realize the combline filter in LTCC process, it could have two zeros at both higher and lower bands (Please see the file 2 and 3). If the multilayer process could provide significant electric coupling so that it can satisfy the condition of elliptic-function filter (shunt parallel-resonance + series parallel resonance)?
Thank you
When we design the combline filter in microstrip technology, we usually can get one transmission zero at the higher edge of passband. How does it occur? I read the "wide-bandwidth combline filter with high selectivity" (please see the attached file), the author thought it is caused by inductive coupling between adjacent and non-adjacent resonators.
If the combline filer in microstrip structure is magnetic-dominant coupling circuit so that it usually has a zero at higher band?
Also, when we realize the combline filter in LTCC process, it could have two zeros at both higher and lower bands (Please see the file 2 and 3). If the multilayer process could provide significant electric coupling so that it can satisfy the condition of elliptic-function filter (shunt parallel-resonance + series parallel resonance)?
Thank you