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US 11,601,115 B2Granted
Electronic RF filter
AssigneeRf360 Europe GmbH
InventorsMarc Esquius Morote, Matthias Jungkunz
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Abstract
An electronic filter comprises a high pass section (110) and a low pass section (120). The high pass section includes at least one filter stage of a series-connected acoustic resonator (111) and a parallel connected inductor (114). The low pass section comprises at least one filter stage including a series-connected inductor (121) and a parallel connected acoustic resonator (123). The filter is useful for a communication device covering the n79 5G band.
Claims5
An electronic RF filter, comprising:
- a first terminal and a second terminal;
- a high pass section, the high pass section coupled to the first terminal, the high pass section comprising:
- a first acoustic resonator, a second acoustic resonator, and a third acoustic resonator connected in series;
- a first inductor coupled to a ground terminal and coupled to a first node located between the first acoustic resonator and the second acoustic resonator;
- and
- a second inductor coupled to the ground terminal and coupled to a second node located between the second acoustic resonator and the third acoustic resonator;
- and
- a low pass section, the low pass section coupled in series to the high pass section and to the second terminal, the low pass section comprising:
- a third inductor and a fourth inductor connected in series;
- a fourth acoustic resonator coupled to a third node, the third node located between the third inductor and the fourth inductor;
- a fifth inductor coupled to the fourth acoustic resonator and coupled to the ground terminal;
- and
- a fifth acoustic resonator directly coupled to the ground terminal and coupled to a fourth node located between the fourth inductor and the second terminal.
10 more elements
Dependencies are inferred from the claim text.