Overlapping Gate Metal Frame Layout for Compact Power Amplifiers
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Solution Overview
Problem
Current power amplifiers occupy a large area, hindering miniaturization and efficiency improvements in RF power transmission devices.
Innovation Solution
A semiconductor layout pattern featuring gate metal frames with overlapping sections, allowing for closer arrangement and reduced overall area, combined with a cascade power amplifier structure formed by stacking two semiconductor layout patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If traditional power amplifier layout is used, then device functionality is ensured, but layout area is large which hinders miniaturization
Solution Approach 1:
The patent transitions from a planar two-dimensional layout to a three-dimensional stacked architecture. Multiple power amplifier units are arranged in vertical layers with alternating orientations, utilizing the third dimension (height/stacking direction) to reduce the footprint area while maintaining all necessary electrical connections and device functionalities through inter-layer routing and via structures.
Solution Approach 2:
The patent implements a nested arrangement where power amplifier units are stacked within a compact vertical space. Each layer contains complete functional units that are nested within the overall device structure, with lower layers supporting upper layers both physically and electrically, thereby maximizing space utilization and minimizing the overall layout area.
2Area of moving object
If gate metal frames are arranged with gaps for fabrication ease, then manufacturing is simplified, but overall area increases
Solution Approach 1:
The gate metal frames are divided into multiple discrete segments or sections rather than continuous structures. This segmentation allows the frames to be arranged in overlapping configurations with reduced gaps between adjacent frames, as each segment can be independently positioned and connected. The segmented approach enables closer spacing while maintaining fabrication feasibility through standard photolithography and metallization processes.
3Area of moving object
If power amplifier area is reduced for miniaturization, then product size decreases, but efficiency may be compromised
Solution Approach 1:
The patent optimizes the local quality and arrangement of gate metal frames within each power amplifier unit. By carefully designing the frame geometry, thickness, and positioning in critical regions, the patent maintains effective current distribution and electrical characteristics even with reduced overall area. The overlapping frame configuration enhances local current paths and reduces resistive losses, thereby preserving efficiency despite miniaturization.
Data Source
AI summary
The invention provides a semiconductor layout pattern, which comprises a substrate, a plurality of gate metal frames arranged on the substrate, a plurality of source/drain patterns and a plurality of gate patterns extending along an X direction and located in each gate metal frame, and the source/drain patterns and the plurality of gate patterns are alternately arranged along a Y direction, wherein any two adjacent gate metal frames are partially overlapped with each other, and the overlapping part of the two gate metal frames is defined as an overlapping line.