Invention Grant
- Patent Title: Duplexer with balanced impedance ladder
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Application No.: US17836615Application Date: 2022-06-09
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Publication No.: US11700029B2Publication Date: 2023-07-11
- 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
- The original application number of the division: US16916914 2020.06.30
- 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
- US20220311471A1 DUPLEXER WITH BALANCED IMPEDANCE LADDER Public/Granted day:2022-09-29
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