Duplexer with balanced impedance ladder
AssigneeApple Inc.
InventorsOliver Georg Dorn, Joonhoi Hur, Rastislav Vazny
Life of this patent
Estimating the term…
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.
Claims20
A duplexer, comprising:
- a transmitter port coupled to transmitter circuitry of an electronic device;
- and
- a plurality of transmitter impedance devices configured to couple the transmitter port to one or more antennas of the electronic device.
Isolation circuitry, comprising:
- a receiver port coupled to receiver circuitry of an electronic device;
- and
- a plurality of receiver impedance devices configured to couple the receiver port to one or more antennas of the electronic device during a reception mode, the receiver port being configured to provide a reception signal from the one or more antennas to the receiver circuitry based on the plurality of receiver impedance devices coupling the receiver port to the one or more antennas during the reception mode.
Isolation circuitry, comprising:
- a first set of impedance devices configured to couple transmitter circuitry to at least one antenna of an electronic device;
- and
- one or more processors configured to
- set a first impedance gradient and a second impedance gradient of the first set of impedance devices to a first impedance state,
- set a first impedance tuner and a second impedance tuner of the first set of impedance devices to a second impedance state, and
- transmit data from the transmitter circuitry using the at least one antenna.
Dependencies are inferred from the claim text.