Power amplifier device and power amplifier circuit thereof
AssigneeZte Corporation
InventorsXiaojun Cui, Huazhang Chen, Jinyuan An, Jianli Liu
Life of this patent
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Abstract
The present invention relates to a power amplifier apparatus and power amplifier circuit, and the power amplifier circuit uses the Doherty circuit structure, and uses a high voltage heterojunction bipolor transistor (HVHBT) power amplifier to achieve a Carrier amplifier of the Doherty circuit structure, and uses lateral double-diffused metal oxide semiconductor (LDMOS) to achieve a Peak amplifier. The power amplifier apparatus and power amplifier circuit in the present invention improves the efficiency of the power amplifier.
Claims10
A power amplifier apparatus, comprising one or more driver stage power amplifier circuits in a series connection and a final stage power amplifier circuit connecting with an output end of last one driver stage power amplifier circuit, wherein the driver stage power amplifier circuit uses a Doherty circuit structure;
- wherein
- the apparatus is implemented in a following way:
- determining a model number of a power amplifier used by a final stage carrier amplifier;
- comparing, analyzing and determining a Doherty structure to be used;
- determining a model number of a power amplifier used by a final stage peak amplifier;
- according to gain of final stage, determining a model number of a power amplifier used by a driver stage carrier amplifier and a model number of a power amplifier used by a driver stage peak amplifier;
- completing a matching design of power amplifiers of the final stage and driver stage and a design for parts of power divider and power combiner in a block diagram.
Dependencies are inferred from the claim text.