Circuit for suppressing signals adjacent to a passband

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United States of America Patent

PATENT NO 10491193
APP PUB NO 20170331454A1
SERIAL NO

15592319

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Abstract

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A circuit having a power amplifier port, an antenna port, and a ladder network coupled between the power amplifier and antenna ports is disclosed. The ladder network includes a proximal series acoustic resonator coupled to the power amplifier port, a distal series acoustic resonator coupled to the antenna port, and at least one series acoustic resonator coupled between the proximal series acoustic resonator and the distal series acoustic resonator. A first shunt acoustic resonator is coupled between a fixed voltage node and the proximal series acoustic resonator and the at least one series acoustic resonator. A second shunt acoustic resonator is coupled between the fixed voltage node and a second node to which the at least one series acoustic resonator is also coupled. A first inductor is coupled in parallel with the proximal series acoustic resonator to create notches below and above a passband of the ladder network.

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Patent Owner(s)

  • QORVO US, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cihangir, Aykut Munich, DE 1 1
Link, Andreas Laaber, DE 15 126

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