Coupled Magnetic Pulse-Shaping Network for Compact RF Amplifiers
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Solution Overview
Problem
Magnetic components, such as inductors, in pulse-shaping networks are large and costly, posing a challenge to realizing miniature and cost-effective discrete drain modulation systems.
Innovation Solution
A magnetic element is magnetically coupled to another inductive element, forming a multi-winding component with three output terminals, allowing integration with other electronics on a single semiconductor die, reducing the size and cost of pulse-shaping networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional magnetic components (inductors) are used in pulse-shaping networks, then high-efficiency filtering is achieved, but the size and cost of the system increases
Solution Approach 1:
The patent combines multiple inductive elements into a single integrated magnetic component with multiple windings on a common core. This merging approach maintains the filtering functionality of multiple inductors while reducing the overall component size and eliminating the need for separate magnetic components, directly resolving the contradiction between filtering efficiency and component size
Solution Approach 2:
The integrated magnetic component serves multiple functions simultaneously - it provides filtering for multiple signal paths and implements pulse-shaping network functionality all within a single component. This multi-functionality maintains high-efficiency filtering across multiple channels while occupying minimal space, addressing both the efficiency and size concerns
2Loss of energy
If conventional magnetic components (inductors) are used in pulse-shaping networks, then high-efficiency filtering is achieved, but the cost of the system increases
Solution Approach 1:
By merging multiple inductive elements into a single integrated magnetic component, the patent reduces the total number of parts that need to be manufactured, procured, and assembled. This consolidation maintains the filtering efficiency of multiple inductors while significantly reducing component count and assembly complexity, directly addressing the cost issue
Solution Approach 2:
The universal magnetic component performs multiple filtering and pulse-shaping functions that would otherwise require several separate components. This multi-functionality reduces the bill of materials and simplifies the supply chain, maintaining high filtering efficiency while reducing overall system cost
3Volume of moving object
If discrete drain modulation systems are miniaturized, then system size is reduced, but integration of magnetic components becomes more difficult
Solution Approach 1:
The patent merges multiple inductive elements into a single integrated magnetic component that can be mounted as one unit rather than multiple separate components. This merging approach enables miniaturization by reducing the total component count and interconnections, while the integrated design simplifies the mounting and integration process compared to coordinating multiple discrete magnetic components
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 solution enables smaller and more efficient pulse-shaping networks, suitable for radio frequency power amplifiers in mobile devices, by replicating the functionality of conventional networks using fewer components.
Implementation Method 1
a first inductive element magnetically coupled to a second inductive element. The first inductive element includes a first winding disposed about a first portion of a core and the second inductive element includes a second winding disposed about a second portion of a core
Data Source
AI summary
A pulse-shaping network configured for use in a radio frequency (rf) power amplifier system, the pulse-shaping network comprising: a coupled magnetic element comprising a first inductive element magnetically coupled to a second inductive element, the first inductive element comprising a first winding disposed about a first portion of a core, and the second inductive element comprising a second winding disposed about a second portion of a core, wherein the first and second inductive elements are electrically coupled to provide three output terminals of the coupled magnetic element.