Waveguide band-pass filter with pseudo-elliptic response
AssigneePolitecnico Di Milano
InventorMarco Politi
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Abstract
A waveguide band-pass filter is disclosed comprising: an input/output gate for a signal; a first inductive discontinuity coupling device; a second inductive discontinuity coupling device and a first waveguide resonator segment coupled to said input/output gate and interposed between the first and the second coupling devices. At least one of the first and the second coupling devices includes at least a resonant coupling structure which extends in the waveguide with a reduced height relative to a height of the first resonator segment and it is shaped for inputting a zero in a transmission frequency response of the filter.
Claims16
1-15. (canceled)
A waveguide band-pass filter comprising:
- an input/output gate for a signal;
- a first inductive discontinuity coupling device;
- a second inductive discontinuity coupling device;
- a first waveguide resonator segment coupled to said input/output gate for a signal and interposed between the first and the second coupling devices;
- wherein:
- the first and the second coupling devices include at least a resonant coupling structure which extends in the waveguide with a reduced height in respect to a height of the first resonator waveguide segment and it is shaped for introducing a zero in a transmission frequency response of the filter, and
- the first and second coupling devices are structured to operate as coupling devices at frequencies of said signal different from a resonance frequency of the at least a resonant coupling structure.
Dependencies are inferred from the claim text.