Coil-Coupled RF Switching Circuit for Low-Loss 5G Signal Paths
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Solution Overview
Problem
Existing wireless communication systems face challenges in minimizing signal loss, insertion loss, and noise figure, particularly in high-frequency bands, and require additional electrostatic discharge (ESD) circuits.
Innovation Solution
A switching circuit utilizing multiple coils and switches to establish transmission and reception paths, reducing insertion loss and noise figure, and incorporating an ESD function within the system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional switching circuits are used in high-frequency bands, then signal transmission is enabled, but insertion loss increases and signal quality deteriorates
Solution Approach 1:
The switching circuit is divided into multiple independent switching units, each handling specific signal paths. This segmentation allows optimized impedance matching in each unit, reducing overall insertion loss while maintaining signal quality through distributed signal path management
Solution Approach 2:
The circuit employs variable impedance matching networks that dynamically adjust impedance parameters based on operating conditions. This enables optimal impedance matching across different frequency bands and power levels, minimizing insertion loss and maintaining signal integrity
2Reliability
If additional ESD circuits are added for protection, then electrostatic discharge protection is improved, but device complexity increases
Solution Approach 1:
ESD protection functions are integrated directly into the existing switching circuit architecture rather than being implemented as separate external circuits. The switching transistors and impedance matching networks serve dual purposes: signal switching and ESD protection, thereby reducing overall device complexity
Solution Approach 2:
The switching circuit components are designed to perform multiple functions simultaneously. The same transistors and matching networks that enable signal transmission also provide electrostatic discharge protection, eliminating the need for dedicated ESD protection circuits
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 effectively reduces signal loss and noise figure while eliminating the need for separate ESD circuits, enhancing performance in wireless communication systems.
Implementation Method 1
a first coil, a second coil electrically coupled to the first coil
Data Source
AI summary
A 5th generation (5G) or pre-5G communication system for supporting a higher data rate than previous 4th generation (4G) communication systems is provided. A switching circuit in a wireless communication system is provided. The switching circuit includes a first coil, a second coil electrically coupled to the first coil, a first switch electrically connected to the second coil, a third coil electrically coupled to the first coil, a second switch electrically connected to the third coil, and a control unit configured to control the opening or closing of the first switch and the second switch. The control unit can be configured to close the first switch and open the second switch to form a first path using the first coil and the second coil, and open the first switch and close the second switch to form a second path using the first coil and the third coil.