Invention Grant
- Patent Title: Duplexer with balanced impedance ladder
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Application No.: US16916914Application Date: 2020-06-30
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Publication No.: US11368181B2Publication Date: 2022-06-21
- Inventor: Oliver Georg Dorn , Joonhoi Hur , Rastislav Vazny
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Fletcher Yoder PC
- Main IPC: H04B1/50
- IPC: H04B1/50 ; H04B1/00 ; H03H11/34 ; H03F3/24

Abstract:
An electrical balance duplexer has multiple impedance gradients and multiple impedance tuners. The electrical balance duplexer transmits an outgoing signal from a transmitter during a transmission mode when a first set of impedance gradients of the multiple impedance gradients is operating in a first impedance state and a first set of impedance tuners of the multiple impedance tuners is operating in a second state. The electrical balance duplexer isolates the outgoing signal from a receiver during the transmission mode when a second set of impedance gradients of the multiple impedance gradients and a second set of impedance tuners of the multiple impedance tuners are operating in the second impedance state.
Public/Granted literature
- US20210409063A1 DUPLEXER WITH BALANCED IMPEDANCE LADDER Public/Granted day:2021-12-30
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