Tunable Antenna Radiated Power Optimization
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Solution Overview
Problem
Existing remote control signal transmission devices for automatic access points suffer from reduced performance due to component tolerances and user-hand interference, leading to variable signal power and range fluctuations.
Innovation Solution
A remote control transmitting device with a tunable antenna and varactor diodes, driven by a microcontroller, uses a charge pump and chopper-type DC-DC converter to maximize radiated power through real-time feedback and voltage control, optimizing transmission performance independently of component tolerances and user grip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a fixed-frequency transmitting antenna is used, then the device structure is simple, but the radiated power varies due to component tolerances and cannot be optimized
Solution Approach 1:
The patent applies dynamics by making the antenna frequency tunable rather than fixed. The microcontroller dynamically adjusts the antenna resonance frequency based on real-time feedback from the measuring circuit, allowing the system to adapt to component tolerances and maximize radiated power at operating temperature.
Solution Approach 2:
The patent implements feedback by using a measuring circuit connected to the transmitting antenna that provides real-time voltage information to the microcontroller. The microcontroller uses this feedback to adjust the tuning frequency of the antenna, creating a closed-loop control system that maximizes radiated power.
2Power
If the transmitting antenna frequency is not adjusted for temperature, then the device structure is simple, but the radiated power decreases at operating temperature due to frequency drift
Solution Approach 1:
The patent applies preliminary action by measuring and adjusting the antenna resonance frequency before the device enters standby mode. This preliminary tuning ensures the antenna is optimally frequency-matched before actual operation begins, compensating for temperature drift that occurs during power-up.
Solution Approach 2:
The microcontroller uses feedback from the measuring circuit to detect the actual resonance frequency of the transmitting antenna and adjusts the tuning accordingly, creating a closed-loop system that maintains optimal frequency matching despite temperature variations.
3Length of moving object
If maximum power is supplied to the transmitting antenna, then the transmission range is maximized, but the power consumption increases
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the antenna resonance frequency to match the transmitting frequency, which maximizes power transfer efficiency. This allows the system to achieve maximum transmission range with lower power consumption by optimizing the resonant coupling between the antenna and the RF signal.
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 achieves consistent and maximized radiated power, reducing performance degradation and maintaining a stable transmission range, while also reducing manufacturing costs and electromagnetic emissions.
Implementation Method 1
the phase of varying the tuning frequency of the transmission interface suitable for maximising its radiated power
Implementation Method 2
A remote control transmitting device with a tunable antenna and varactor diodes, driven by a microcontroller, uses a charge pump and chopper-type DC-DC converter to maximize radiated power through real-time feedback and voltage control
Data Source
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AI summary
The present invention refers to a method and to a device for the optimized transmission of remote control signals particularly but not exclusively used to open or close gates, doors and automatic barriers, in which the method (100) for the optimized transmission of remote control signals comprises a phase consisting of transmitting (110) a remote control signal at a carrier frequency through a via-ether transmission interface (11) and it is characterised in that it comprises in addition the phases consisting of receiving (120) through a via-ether receiving means (12) the transmitted remote control signal and measuring its radiated power, and varying (130) the transmitted remote control signal so as to maximize said measured radiated power.