Variable Q Antenna for High-Speed Contactless Communication Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing contactless communication technologies between reader/writer devices and information processing devices, such as IC cards and cell phones, face instability at higher communication speeds due to the lack of consideration for adjusting the Q value of the antenna based on communication speed, leading to reduced communication stability.
Innovation Solution
An information processing device with a communication antenna having a variable Q value, a communication speed determining unit, and a communication controlling unit that adjusts the Q value of the antenna according to the determined communication speed, along with a carrier signal generating unit and an amplifying unit with a variable amplification factor, to stabilize communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If communication speed is increased in contactless-type communication, then productivity is improved, but communication stability deteriorates due to insufficient voltage of the carrier signal at the antenna
Solution Approach 1:
The patent changes the Q value parameter of the antenna based on communication speed. When communication speed is high, the Q value is set to a lower value to increase the voltage of the carrier signal at the antenna, thereby maintaining communication stability while achieving high-speed communication.
2Device complexity
If the Q value of the antenna is kept constant, then device complexity is reduced, but communication stability deteriorates at higher communication speeds
Solution Approach 1:
The patent makes the Q value of the antenna dynamic by adjusting it according to the communication speed. The antenna controller changes the Q value based on the determined communication speed, allowing the system to adapt to different communication conditions and maintain stability without excessive complexity.
3Adaptability or versatility
If the Q value is adjusted based on communication distance, then adaptability is improved, but communication stability at high speeds still deteriorates due to lack of speed-based adjustment
Solution Approach 1:
The patent extends the parameter adjustment approach by changing the Q value based on communication speed in addition to communication distance. The antenna controller determines both the communication distance and speed, then adjusts the Q value accordingly to maintain stability across varying communication conditions.
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 stabilizes contactless communication by dynamically adjusting the Q value and amplification factor based on communication speed, enhancing communication stability and reliability across varying speeds.
Implementation Method 1
perform contactless-type communication with an external device through a communication antenna 106 having a variable Q value, using a communication path that can transmit and receive a signal using a carrier of a predetermined frequency
Implementation Method 2
an amplifying unit 104 with a variable amplification factor, for amplifying the carrier signal with a set amplification factor to transmit to the communication antenna 106
Data Source
AI summary
An information processing device is provided. The information processing device including a communication antenna having a variable Q value, for performing contactless-type communication with an external device by using a communication path capable of transmitting and receiving a signal using a carrier of a predetermined frequency, a communication speed determining unit for determining a communication speed in the communication with the external device, and a communication controlling unit for allowing the Q value of the communication antenna to be set to a value corresponding to a determined communication speed based on the communication speed determined in the communication speed determining unit.