MIM Capacitor Layout for Harmonic and Intermodulation Rejection
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Solution Overview
Problem
Existing antennaplexers in communication systems suffer from insufficient noise suppression and interference reduction, particularly in 5G communication, leading to harmonic and intermodulation distortion issues that affect signal quality and speed.
Innovation Solution
The introduction of metal-insulator-metal (MIM) capacitors with improved layout schemes, including parallel coupling and specific arrangements of bottom plates, enhances the performance of antennaplexers by reducing non-linearity and improving harmonic and intermodulation distortion rejection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional capacitor layouts are used in antennaplexers, then device complexity is reduced, but noise suppression and interference reduction are insufficient leading to harmonic and intermodulation distortion
Solution Approach 1:
The capacitor is divided into multiple smaller capacitive elements arranged in a specific geometric pattern. Each element contributes to the overall capacitance while the segmented layout reduces parasitic effects and improves noise suppression characteristics, directly addressing the harmful factors without excessive complexity
Solution Approach 2:
Different regions of the capacitor structure are designed with specific properties - the bottom plates are arranged in a stacked configuration with specific spacing and orientation to minimize intermodulation distortion in critical areas, while maintaining overall device simplicity
2Reliability
If MIM capacitors with improved layout schemes are introduced, then harmonic and intermodulation distortion rejection is improved, but device complexity increases
Solution Approach 1:
The capacitor structure employs a nested arrangement where bottom plates are stacked vertically with insulator layers between them. This nested configuration achieves improved harmonic rejection by creating controlled electromagnetic fields while maintaining a compact footprint that limits overall structural complexity
Solution Approach 2:
The capacitor design transitions from a planar two-dimensional layout to a three-dimensional stacked configuration. By adding the vertical dimension with multiple bottom plate layers, the design achieves superior distortion rejection properties without proportionally increasing the planar footprint or manufacturing complexity
3Speed
If multiple MIM capacitors are coupled in parallel with specific bottom contact arrangements, then signal propagation is improved, but manufacturing precision requirements increase
Solution Approach 1:
The bottom contacts are arranged in an asymmetric pattern relative to the capacitor structure, with specific contacts positioned at corners or edges. This asymmetric arrangement optimizes signal propagation paths while providing manufacturing tolerance that prevents excessive precision requirements, as the design does not require perfect symmetry
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The use of MIM capacitors with optimized layouts improves signal propagation and reduces interference, enabling better support for multiple frequency bands and reducing noise in wireless devices.
Implementation Method 1
a first metal-insulator-metal (MIM) capacitor (CAP) having a capacitance C
Data Source
AI summary
Aspects and embodiments disclosed herein include a semiconductor device comprising a metal-insulator-metal capacitor having a capacitance. The metal-insulator-metal capacitor comprises a plurality of metal-insulator-metal capacitors coupled in parallel, each metal-insulator-metal capacitor of the plurality of metal-insulator-metal capacitors having a top plate, a bottom plate, and a corresponding capacitance, and a plurality of bottom contacts, at least one of the plurality of bottom contacts arranged between a pair of directly adjacent metal-insulator-metal capacitors of the plurality of metal-insulator-metal capacitors. Also disclosed are antennaplexers, electronic device modules, and electronic devices including aspects and embodiments of the semiconductor device.