Embedded LC Resonator Layout for Compact Filter Integration
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Solution Overview
Problem
Traditional filters in integrated circuits face challenges due to limited space, which hinders performance improvement and increases the occupied space by resonators, and the fixed connection manner of resonators affects filtering performance.
Innovation Solution
A resonator design incorporating an LC resonant unit and an embedded resonant unit connected through an interface, allowing for improved filtering performance and reduced space occupation by embedding the embedded resonant unit within the LC resonant unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If traditional resonators are used in filters, then the filtering function is provided, but the occupied space is large and integration is difficult
Solution Approach 1:
The patent embeds a second resonator inside the structure of the first resonator. The second resonator is coupled to the first resonator through capacitive coupling, allowing both resonators to coexist in a compact configuration. This nested arrangement significantly reduces the total occupied space while maintaining the filtering performance through the interaction between the two resonators.
Solution Approach 2:
The patent transitions from a planar two-dimensional layout to a three-dimensional nested structure. By stacking resonators vertically and using capacitive coupling between different layers, the design utilizes the third dimension (height) to accommodate multiple resonators without increasing the footprint area, thereby improving integration density.
2Reliability
If multiple resonators are connected in series or parallel, then filtering performance can be adjusted, but the connection structures occupy large space
Solution Approach 1:
The patent combines the functions of multiple resonators into a single integrated structure where the second resonator is embedded within the first resonator's structure. The capacitive coupling between resonators eliminates the need for separate connection structures, merging the resonators into a compact unified design that maintains adjustable filtering performance.
Solution Approach 2:
By nesting the second resonator inside the first resonator and using capacitive coupling for connection, the patent eliminates traditional series or parallel connection structures that would occupy additional space. The nested configuration allows multiple resonators to be integrated without requiring external connection elements.
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
Enhances filtering effect with increased signal transmission zeros and improved filtering performance while minimizing space usage, maintaining the integrity of the resonator's inductive or capacitive values.
Implementation Method 1
The resonant element includes at least one of an inductive element or a capacitive element
Implementation Method 2
The resonant element includes at least one of an inductive element or a capacitive element
Implementation Method 3
a first end of the embedded resonant unit is connected to the interface. A second end of the embedded resonant unit is connected to a reference potential end
Data Source
AI summary
A resonator includes an LC resonant unit and an embedded resonant unit. The LC resonant unit includes a resonant element. The resonant element includes a first portion, a second portion, and an interface between the first portion and the second portion. The first portion is connected to the second portion through the interface. The embedded resonant unit is embedded in the LC resonant unit through the interface.