Integrated Output Combiner Circuit for Compact Doherty Amplifiers
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Solution Overview
Problem
Doherty RF power amplifiers have a significant cost, size, and weight contribution from their output matching network, which is composed of separate components, leading to increased overall system size, weight, and cost.
Innovation Solution
An integrated circuit that combines the output combiner circuit components, including a first and second circuit with output matching sections and a power sampling coupler, fabricated as a single unit, reducing the number of separate components and enhancing integration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If separate components are used for output matching network, then ease of manufacture is improved, but device complexity and size increase
Solution Approach 1:
The patent combines multiple separate components (output matching network, combining network, and power sampling components) into a single integrated circuit. This integration reduces the overall device complexity and size while maintaining the individual functionality of each component through careful circuit design and component placement within the integrated structure.
2Ease of repair
If separate components are used for output matching network, then ease of repair is improved, but weight and size increase
Solution Approach 1:
The patent integrates the output matching network, combining network, and power sampling components into a single integrated circuit, significantly reducing the overall weight of the amplifier system. The integration eliminates the need for multiple discrete components, connectors, and mounting structures, thereby reducing total weight while maintaining repairability through modular amplifier design.
3Adaptability or versatility
If separate components are used for output matching network, then adaptability is improved, but cost increases
Solution Approach 1:
The patent consolidates multiple functional components into a single integrated circuit, reducing the overall cost of the amplifier system. The integration reduces component count, assembly steps, and manufacturing complexity, leading to lower production costs while maintaining adaptability through the modular nature of the integrated circuit design that can be adapted to different amplifier configurations.
Data Source
AI summary
An output matching circuit for electronic amplifiers in the form of an integrated circuit is disclosed. The integrated circuit includes a first circuit, a second circuit, and a power sampling coupler. The first circuit is coupled to output of a first amplifier. The first circuit comprises a first matching section and an impedance inverter. The second circuit is coupled to output of a second amplifier, wherein the second circuit comprises a second matching section. The power sampling coupler is coupled to the first circuit and the second circuit, wherein the first circuit, the second circuit, and the power sampling coupler are fabricated as a single integrated circuit.