Bridge-type filters
AssigneeRF360 Singapore Pte. Ltd.
InventorsEdgar Schmidhammer, Marc Esquius Morote, Juha Sakari Ella
Life of this patent
Estimating the term…
Abstract
An apparatus is disclosed for a bridge-type filter. In example aspects, the apparatus includes a filter circuit having a first port, a second port, and a filter core. The filter core is coupled between the first port and the second port. The filter core includes at least one transformer, a first resonator arrangement, and a second resonator arrangement. The first resonator arrangement is coupled to the at least one transformer and includes multiple acoustic resonators. The second resonator arrangement is coupled to the at least one transformer and includes multiple acoustic resonators.
Claims25
An apparatus comprising:
- a filter circuit comprising:
- a first port;
- a second port;
- a first filter core comprising a bridge-type filter architecture having multiple acoustic resonators, the first filter core coupled between the first port and the second port;
- and
- a second filter core comprising a bridge-type filter architecture having multiple acoustic resonators, the second filter core coupled between the first port and the second port,
- the first filter core and the second filter core cascaded in series between the first port and the second port;
- wherein:
- the filter circuit comprises a first inductor;
- the filter circuit comprises a second inductor;
- the first inductor is coupled in series with respect to multiple acoustic resonators of the first filter core and multiple acoustic resonators of the second filter core;
- and
- the second inductor is coupled in series with respect to the multiple acoustic resonators of the first filter core and the multiple acoustic resonators of the second filter core.
An apparatus comprising:
- a filter circuit comprising:
- a first port;
- a second port;
- a first filter core comprising means for filtering with multiple acoustic resonators, the first filter core coupled between the first port and the second port;
- and
- a second filter core comprising means for filtering with multiple acoustic resonators, the second filter core coupled between the first port and the second port,
- the first filter core and the second filter core cascaded in series between the first port and the second port;
- wherein:
- the filter circuit comprises a first inductor;
- the filter circuit comprises a second inductor;
- the first inductor is coupled in series with respect to the multiple acoustic resonators of the first filter core and the multiple acoustic resonators of the second filter core;
- and
- the second inductor is coupled in series with respect to the multiple acoustic resonators of the first filter core and the multiple acoustic resonators of the second filter core.
An apparatus comprising:
- a filter circuit comprising:
- a first port;
- a second port;
- and
- a first filter core coupled between the first port and the second port, the firstfilter core comprising:
- at least one transformer;
- a first resonator arrangement coupled to the at least one transformer, the first resonator arrangement comprising multiple acoustic resonators;
- and
- a second resonator arrangement coupled to the at least one transformer, the second resonator arrangement comprising multiple acoustic resonators;
- wherein:
- the filter circuit comprises a first inductor;
- the filter circuit comprises a second inductor;
- the first inductor is coupled in series with respect to multiple acoustic resonators of the first filter core and multiple acoustic resonators of a second filter core;
- and
- the second inductor is coupled in series with respect to the multiple acoustic resonators of the first filter core and the multiple acoustic resonators of the second filter core.
Dependencies are inferred from the claim text.