Single Spiral Inductor Antenna Multi-Band Switching
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Solution Overview
Problem
Conventional wireless communication devices require two spiral inductor antennas of different inductance values and Q values to achieve dual-band operation, leading to a large circuit area and complexity.
Innovation Solution
A wireless communication device utilizing a single spiral inductor antenna with multiple inductance paths and a switch circuit, where the on/off states of switches determine the inductance path for signal transmission, allowing operation across different frequency bands without the need for multiple antennas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two spiral inductor antennas of different inductance values are used to achieve dual-band operation, then multi-band operation capability is improved, but circuit area increases
Solution Approach 1:
The patent merges the functions of two separate spiral inductor antennas into a single antenna structure. The single antenna contains multiple inductance paths with different inductance values, allowing it to operate across multiple frequency bands. This combining approach reduces the circuit area by eliminating the need for two separate antenna structures while maintaining dual-band operation capability through the integrated multi-path design.
Solution Approach 2:
The single spiral inductor antenna is segmented into multiple inductance paths within its structure. Each path has a different inductance value corresponding to different frequency bands. By segmenting the antenna into these distinct paths and using switch circuitry to select between them, the patent achieves multi-band operation from a single physical antenna structure, thereby reducing overall circuit area.
2Adaptability or versatility
If two spiral inductor antennas are used for dual-band operation, then multi-band operation capability is improved, but device complexity increases
Solution Approach 1:
The patent combines two separate antenna systems into one integrated antenna structure with multiple inductance paths. This merging reduces device complexity by eliminating redundant components and simplifying the overall system architecture. The single antenna with switchable paths is less complex than managing two separate antenna systems with their respective impedance matching networks and control circuits.
Solution Approach 2:
The single spiral inductor antenna is designed to be universal, serving multiple frequency bands through its multi-path structure. This multi-functional antenna can operate at different frequencies by switching between paths, eliminating the need for separate specialized antennas for each band. The universal design reduces device complexity by consolidating multiple functions into a single component.
3Area of stationary object
If a single spiral inductor antenna with multiple inductance paths is used, then circuit area is reduced, but switch circuitry is required to control inductance paths
Solution Approach 1:
The patent introduces dynamic switching capability to the single antenna system. Switch circuitry is integrated to dynamically select between different inductance paths based on the desired operating frequency band. This dynamic control allows the system to adapt its inductance characteristics in real-time, enabling multi-band operation from a single antenna while keeping the overall circuit area compact. The switch circuitry complexity is justified by the significant reduction in antenna structure complexity and area.
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 solution reduces the circuit area and complexity while enabling multi-band operation, allowing efficient transmission and reception of wireless signals across various bands using a single antenna and switch circuit.
Implementation Method 1
The single spiral inductor antenna has a plurality of inductance paths, and inductance values inducted by the inductance paths are different from one another
Data Source
AI summary
A wireless communication device using a single spiral inductor antenna and a signal receiving/transmitting method thereof operated on multi-band are provided. The single spiral inductor antenna is designed to have a plurality of different inductance paths. Different inductance values are inducted with signal paths switched by a plurality of switches so as to meet the requirements of multi-band operation. As the circuit structure of the single spiral inductor antenna is used, the circuit area is reduced effectively.