Electroacoustic filter including split resonator with detuning

US12021509B2 · kind B2 · utility

Assignee

• RF360 Singapore Pte. Ltd. · SG

Inventors

• Jiman Yoon · Augsburg, DE
• Jürgen Kiwitt · Karlsruhe, DE
• Robert Koch · Munich, DE
• Maximilian Pitschi · Rottach-Egern, DE
• Gerhard Kloska · Rosenheim, DE

Key dates

• Filing date: Jan 22, 2021
• Grant date: Jun 25, 2024
• Expiry date: Sep 7, 2042

Classification

• Technology area (CPC H): Electricity
• CPC primary: H03H9/725
• WIPO field: Basic communication processes
• WIPO sector: Electrical engineering

Abstract

Aspects of the disclosure relate to wireless communication, and high-frequency filters with resonators. One example is a frequency band filter circuit having a split resonator. The split resonator comprises a resonator including a first section of a shared input busbar, a first section of a shared output busbar, and an electrode structure between the first section of the shared input busbar and the first section of the shared output busbar, the electrode structure configured for a resonance. The split resonator also comprises a detuned resonator. The detuned resonator includes a second section of the shared input busbar, a second section of the shared output busbar, and a detuned electrode structure between the second section of the shared input busbar and the second section of the shared output busbar, the detuned electrode structure configured for a detuned resonance different from the resonance.