Antenna Evaluation Apparatus Synchronized Trigger Control
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Solution Overview
Problem
Conventional antenna evaluating apparatuses require longer measurement time intervals to ensure reproducibility of fading environments, leading to lower evaluation accuracy of receiving antennas.
Innovation Solution
An antenna evaluating apparatus with multiple scatterer antennas that simultaneously start and stop signal generation, transmission, and reception operations, allowing for faster evaluation of receiving antennas with higher accuracy by generating reproducible multiple waves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the measurement time interval is extended to ensure reproducibility of fading environment, then the reproducibility of fading environment is improved, but the evaluation time becomes longer and evaluation accuracy decreases
Solution Approach 1:
The patent applies periodic action by using a trigger signal to periodically start and stop the operations of the signal generator, transmitter, and receiver. This synchronized periodic operation allows measurements to be taken at specific intervals when the fading environment is most reproducible, rather than requiring continuous long-duration measurements. The trigger signal coordinates all components to operate simultaneously only during necessary measurement windows, achieving both reproducibility and time efficiency.
Solution Approach 2:
The patent implements feedback by using a trigger signal that coordinates the operation timing of multiple components (signal generator, transmitter, receiver). This feedback mechanism ensures that all components start and stop operations simultaneously, creating a synchronized measurement system that captures reproducible fading environments without requiring extended measurement periods. The trigger signal acts as a feedback control that optimizes the measurement window for both accuracy and efficiency.
2Measurement precision
If the measurement time interval is extended to capture sufficient fading cycles, then the statistical properties of received signal become more accurate, but the evaluation time increases
Solution Approach 1:
The patent uses periodic action through trigger-synchronized operations to capture measurements during optimized time windows. Instead of requiring continuously extended measurement intervals, the system periodically activates all components simultaneously only when measurement conditions are optimal. This approach captures sufficient fading cycles for accurate statistical analysis while maintaining high evaluation speed through focused, synchronized measurement periods.
Solution Approach 2:
The patent applies preliminary action by pre-coordinating the operation timing of all components through trigger signals before measurements begin. The system prepares the signal generator, transmitter, and receiver to operate simultaneously at predetermined intervals, ensuring that measurements are captured during optimal fading environment conditions without requiring post-hoc analysis of extended measurement periods. This preliminary coordination maximizes both precision and productivity.
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
Enables the evaluation of receiving antennas in a shorter time with higher accuracy by synchronizing the operations of signal generators, transmitters, and receivers, improving reproducibility of the fading environment.
Implementation Method 1
transmitter means, which divides a transmitting signal generated by signal generator means into a plurality of transmitting signals, changes at least one of a phase and an amplitude of each of the divided transmitting signals, and radiates the changed transmitting signals as radio waves from N scatterer antennas
Data Source
AI summary
A transmitting signal from a signal generator is divided in seven transmitting signals in a divider, and the phase and the amplitude of each of divided transmitting signals are changed in a phase shifter circuit and an attenuator circuit. The respective transmitting signals from the attenuator circuit are radiated from scatterer antennas. A receiver receives a multiple wave of radiated radio waves by using a receiving antenna. A computer substantially simultaneously starts operations of a D/A converter, the signal generator, and the receiver by using a trigger generator circuit.