Circuit Module With Intersecting Electrodes and Magnetic Field Intensification
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Solution Overview
Problem
Existing circuit modules for multiband, multimode mobile communication terminals face efficiency losses due to insertion loss from matching circuits and limited design flexibility due to the separation of non-reciprocal circuits to avoid DC magnetic field interference.
Innovation Solution
The circuit module incorporates non-reciprocal circuits with intersecting center electrodes and permanent magnets to intensify DC magnetic fields, reducing input impedance and allowing for simplified matching circuits, enabling closer placement of non-reciprocal circuits for increased design flexibility and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If matching circuits are provided between power amplifiers and non-reciprocal circuits, then impedance matching is achieved, but insertion loss increases and efficiency decreases
Solution Approach 1:
The patent extracts the impedance matching function from separate matching circuits and integrates it directly into the non-reciprocal circuits. By designing the non-reciprocal circuits with built-in impedance transformation capability, the need for additional external matching circuits is eliminated, thereby reducing insertion loss while maintaining impedance matching.
Solution Approach 2:
The patent merges the impedance matching function with the non-reciprocal circuit functionality. The non-reciprocal circuit is designed to simultaneously perform both the non-reciprocal signal transmission and the impedance transformation, combining multiple functions into a single integrated structure that reduces overall loss.
2Object-affected harmful factors
If non-reciprocal circuits are separated to avoid DC magnetic field interference, then magnetic field interference is reduced, but design flexibility and compactness are limited
Solution Approach 1:
The patent converts the harmful DC magnetic field interaction into a beneficial effect by intentionally utilizing the magnetic field coupling between adjacent non-reciprocal circuits. The permanent magnets are positioned and oriented such that their magnetic fields interact constructively, allowing the circuits to be placed closer together while actually improving performance through enhanced magnetic coupling.
Solution Approach 2:
The patent introduces a magnetic shielding structure as an intermediary element between the non-reciprocal circuits. This shielding structure selectively blocks harmful magnetic field interference while allowing the desired magnetic coupling to occur, enabling closer placement of circuits without suffering from negative interference effects.
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
This configuration reduces insertion loss, enhances power efficiency, and allows for a more compact design while maintaining high impedance matching, thus improving the overall performance and flexibility of the circuit module.
Implementation Method 1
a permanent magnet that applies a direct-current magnetic field to a portion at which the first and second center electrodes intersect with each other
Implementation Method 2
a microwave magnetic body, a first center electrode and a second center electrode disposed on the microwave magnetic body
Data Source
AI summary
Isolators are disposed such that DC magnetic fields of permanent magnets intensity with each other, and thus, the input impedance of non-reciprocal circuits 3a and 3b (regulating means 3) is reduced. Accordingly, the impedance conversion ratio between the output impedance of amplifying means 2 and the input impedance of the regulating means 3 is reduced to be relatively small. Thus, by simplifying the configuration of matching means 4 disposed between the amplifying means 2 and the regulating means 3, the insertion loss of the matching means 4 can be reduced, thereby enhancing the efficiency of a circuit module 1. Additionally, it is possible to dispose the non-reciprocal circuits 3a and 3b close to each other so that the DC magnetic fields of the permanent magnets can intensity with each other, thereby increasing the design flexibility of the circuit module 1 and accordingly reducing the size of the circuit module 1.