Doherty amplifier arrangement

A method for amplifying a radio signal by a Doherty amplifier, the method comprises

• splitting the radio signal into a first signal component, a second signal component that is substantially 90° apart in phase in relation to the first signal component, a third signal component that is substantially 180° apart in phase in relation to the first signal component and a fourth signal component, that is substantially 270° apart in phase in relation to the first signal component,
• amplifying the first signal component by a carrier amplifier providing a first amplified carrier signal
• amplifying the third signal component by the carrier amplifier providing a second amplified carrier signal
• amplifying the second signal component by a peak amplifier providing a first amplified peak signal
• amplifying the fourth signal component providing a second amplified peak signal
• combining the first amplified carrier signal, the second amplified carrier signal, the first amplified peak signal, and the second amplified peak signal in-phase by a circular arrangement of a first inductor, a first capacitor, a second inductor, and a second capacitor.

A chip set comprising a Doherty amplifier arrangement having an input terminal for receiving an input signal and having at least one output terminal for providing an amplified signal of the input signal, further comprising:

• a signal splitter for splitting the input signal into a first signal component, a second signal component that is substantially 90° apart in phase in relation to the first signal component, a third signal component that is substantially 180° apart in phase in relation to the first signal component and a fourth signal component, that is substantially 270° apart in phase in relation to the first signal component,
• a carrier amplifier comprising a first carrier amplifier input, a second carrier amplifier input, a first carrier amplifier output for providing a first carrier amplifier output signal, and a second carrier amplifier output for providing a second carrier amplifier output signal,
• a peak amplifier comprising a first peak amplifier input, a second peak amplifier input, a first peak amplifier output for providing a first peak amplifier output signal, and a second peak amplifier output for providing a second peak amplifier output signal
• a signal combiner for combining the first carrier amplifier output signal, the second carrier amplifier output signal, the first peak amplifier output signal, and the second peak amplifier output signal in phase, whereby the signal combiner comprises a first inductor with a first inductor terminal and a second inductor terminal, a first capacitor with a first capacitor terminal and a second capacitor terminal, a second inductor with a third inductor terminal and a fourth inductor terminal, a second capacitor with a third capacitor terminal and a fourth capacitor terminal wherein
• the second inductor terminal is connected to the first capacitor terminal,
• the second capacitor terminal is connected to the third inductor terminal,
• the fourth inductor terminal is connected to the third capacitor terminal,
• the fourth capacitor terminal is connected to the first inductor terminal.

An active antenna array comprising at least one A Doherty amplifier arrangement having an input terminal for receiving an input signal and having at least one output terminal for providing an amplified signal of the input signal, further comprising:

• a signal splitter for splitting the input signal into a first signal component, a second signal component that is substantially 90° apart in phase in relation to the first signal component, a third signal component that is substantially 180° apart in phase in relation to the first signal component and a fourth signal component, that is substantially 270° apart in phase in relation to the first signal component,
• a carrier amplifier comprising a first carrier amplifier input, a second carrier amplifier input, a first carrier amplifier output for providing a first carrier amplifier output signal, and a second carrier amplifier output for providing a second carrier amplifier output signal,
• a peak amplifier comprising a first peak amplifier input, a second peak amplifier input, a first peak amplifier output for providing a first peak amplifier output signal, and a second peak amplifier output for providing a second peak amplifier output signal
• a signal combiner for combining the first carrier amplifier output signal, the second carrier amplifier output signal, the first peak amplifier output signal, and the second peak amplifier output signal in phase, whereby the signal combiner comprises a first inductor with a first inductor terminal and a second inductor terminal, a first capacitor with a first capacitor terminal and a second capacitor terminal, a second inductor with a third inductor terminal and a fourth inductor terminal, a second capacitor with a third capacitor terminal and a fourth capacitor terminal wherein
• the second inductor terminal is connected to the first capacitor terminal,
• the second capacitor terminal is connected to the third inductor terminal,
• the fourth inductor terminal is connected to the third capacitor terminal,
• the fourth capacitor terminal is connected to the first inductor terminal.

A method for manufacturing a Doherty amplifier arrangement, the Doherty amplifier arrangement having an input terminal for receiving an input signal and having at least one output terminal for providing an amplified signal of the input signal, further comprising:

• a signal splitter for splitting the input signal into a first signal component, a second signal component that is substantially 90° apart in phase in relation to the first signal component, a third signal component that is substantially 180° apart in phase in relation to the first signal component and a fourth signal component, that is substantially 270° apart in phase in relation to the first signal component,
• a carrier amplifier comprising a first carrier amplifier input, a second carrier amplifier input, a first carrier amplifier output for providing a first carrier amplifier output signal, and a second carrier amplifier output for providing a second carrier amplifier output signal,
• a peak amplifier comprising a first peak amplifier input, a second peak amplifier input, a first peak amplifier output for providing a first peak amplifier output signal, and a second peak amplifier output for providing a second peak amplifier output signal
• a signal combiner for combining the first carrier amplifier output signal, the second carrier amplifier output signal, the first peak amplifier output signal, and the second peak amplifier output signal in phase, whereby the signal combiner comprises a first inductor with a first inductor terminal and a second inductor terminal, a first capacitor with a first capacitor terminal and a second capacitor terminal, a second inductor with a third inductor terminal and a fourth inductor terminal, a second capacitor with a third capacitor terminal and a fourth capacitor terminal wherein
• the second inductor terminal is connected to the first capacitor terminal,
• the second capacitor terminal is connected to the third inductor terminal,
• the fourth inductor terminal is connected to the third capacitor terminal,
• the fourth capacitor terminal is connected to the first inductor terminal.

A computer program product comprising a non-transitory computer-usable medium having control logic stored therein for causing a computer to manufacture a Doherty amplifier arrangement, the Doherty amplifier arrangement having an input terminal for receiving an input signal and having at least one output terminal for providing an amplified signal of the input signal, further comprising:

• a signal splitter for splitting the input signal into a first signal component, a second signal component that is substantially 90° apart in phase in relation to the first signal component, a third signal component that is substantially 180° apart in phase in relation to the first signal component and a fourth signal component, that is substantially 270° apart in phase in relation to the first signal component,
• a carrier amplifier comprising a first carrier amplifier input, a second carrier amplifier input, a first carrier amplifier output for providing a first carrier amplifier output signal, and a second carrier amplifier output for providing a second carrier amplifier output signal,
• a peak amplifier comprising a first peak amplifier input, a second peak amplifier input, a first peak amplifier output for providing a first peak amplifier output signal, and a second peak amplifier output for providing a second peak amplifier output signal
• a signal combiner for combining the first carrier amplifier output signal, the second carrier amplifier output signal, the first peak amplifier output signal, and the second peak amplifier output signal in phase, whereby the signal combiner comprises a first inductor with a first inductor terminal and a second inductor terminal, a first capacitor with a first capacitor terminal and a second capacitor terminal, a second inductor with a third inductor terminal and a fourth inductor terminal, a second capacitor with a third capacitor terminal and a fourth capacitor terminal wherein
• the second inductor terminal is connected to the first capacitor terminal,
• the second capacitor terminal is connected to the third inductor terminal,
• the fourth inductor terminal is connected to the third capacitor terminal,
• the fourth capacitor terminal is connected to the first inductor terminal.