Switchable Coil Layout for Wider Frequency Range on Smaller Chips
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Solution Overview
Problem
Existing wireless communication technologies face challenges in expanding frequency range without increasing chip size, as multiple transmitters are required, leading to excessive physical area and resource consumption.
Innovation Solution
A switchable coil design comprising a first coil with a first outer and inner coil forming a crossing-region, a second coil with a second outer and inner coil forming another crossing-region inside the first inner coil, and a switch connected to the second inner coil, allowing for adjustable inductance and reduced magnetic coupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple transmitters are implemented to expand frequency range, then frequency coverage is improved, but chip size increases
Solution Approach 1:
The patent combines multiple coils (first outer coil, first inner coil, second outer coil, second inner coil) into a single integrated switchable coil structure that can operate across multiple frequency bands. By merging these coils and using switching elements to selectively connect them, the design achieves multi-band frequency coverage without requiring separate transmitter circuits for each band, thereby reducing the overall chip area while maintaining expanded frequency range capability
Solution Approach 2:
The patent implements dynamic switching capability where switching elements can selectively connect or disconnect different coil combinations based on the desired frequency band. This dynamic reconfiguration allows a single coil structure to adaptively change its electrical characteristics to support multiple frequency ranges (5G band, 6G band, etc.), replacing the need for multiple static transmitter designs and reducing chip size
2Adaptability or versatility
If multiple transmitters are implemented to expand frequency range, then frequency coverage is improved, but resource consumption increases
Solution Approach 1:
The switchable coil structure serves multiple functions by supporting operation across different frequency bands (5G, 6G, and intermediate bands) using a single unified design. The same coil structure can be configured for different bands by switching between different connection states, eliminating the need for separate dedicated transmitters for each frequency range and thereby reducing resource consumption while maintaining broad frequency coverage
Solution Approach 2:
By merging multiple coil structures into a single switchable configuration, the patent reduces the total number of active components required. The switching elements allow one unified transmitter structure to replace what would traditionally require multiple separate transmitters, thereby reducing power consumption, manufacturing resources, and operational costs while maintaining the ability to operate across expanded frequency ranges
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 switchable coil enables the extension of the frequency range without the need for multiple transmitters, reducing chip size and resource consumption while increasing bandwidth and Q value, and minimizing gain loss.
Implementation Method 1
A switchable coil design comprising a first coil with a first outer and inner coil forming a crossing-region, a second coil with a second outer and inner coil forming another crossing-region inside the first inner coil, and a switch connected to the second inner coil, allowing for adjustable inductance
Implementation Method 2
the second crossing-region being inside the first inner coil viewed in a first direction, allowing for adjustable inductance and reduced magnetic coupling
Data Source
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AI summary
A switchable coil includes a first coil (110) including a first outer coil (OC1) and a first inner coil (IC1), the first inner coil and the first outer coil forming a first crossing-region, a second coil (120) including a second outer coil (OC2) and a second inner coil (IC2), the second inner coil and the second outer coil forming a second crossing-region, and the second crossing-region being inside the first inner coil viewed in a first direction, and a switch (SW) connected to a region facing the second crossing-region in the second inner coil.