Invention Grant
- Patent Title: Power amplifier integrated circuit with integrated shunt-l circuit at amplifier output
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Application No.: US16795211Application Date: 2020-02-19
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Publication No.: US11223336B2Publication Date: 2022-01-11
- Inventor: Xin Fu , Margaret A. Szymanowski
- Applicant: NXP USA, Inc.
- Applicant Address: US TX Austin
- Assignee: NXP USA, Inc.
- Current Assignee: NXP USA, Inc.
- Current Assignee Address: US TX Austin
- Agent Sherry W. Gourlay
- Priority: EP18306616 20181205
- Main IPC: H03F3/68
- IPC: H03F3/68 ; H03F3/195 ; H03F3/24 ; H03F1/56 ; H03F1/02 ; H03F3/21

Abstract:
A multiple-path (e.g., Doherty) amplifier includes a semiconductor die, a radio frequency (RF) signal input terminal, a combining node structure integrally formed with the semiconductor die, first and second amplifiers (e.g., main and peaking amplifiers, or vice versa) integrally formed with the semiconductor die, and a shunt circuit electrically connected between an output of the first amplifier and a ground reference node. Inputs of the first and second amplifier are electrically coupled to the RF signal input terminal, and outputs of the first and second amplifier are electrically coupled to the combining node structure. The shunt circuit includes a shunt inductance and a shunt capacitance coupled in series between the output of the first amplifier and the ground reference node, and the shunt capacitance has a first terminal coupled to the shunt inductance, and a second terminal coupled to the ground reference node.
Public/Granted literature
- US20200186107A1 POWER AMPLIFIER INTEGRATED CIRCUIT WITH INTEGRATED SHUNT-L CIRCUIT AT AMPLIFIER OUTPUT Public/Granted day:2020-06-11
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