Wireless Radiation Pattern Measurement Without Cable Scattering
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Solution Overview
Problem
Current methods for measuring radiation patterns of mobile devices require complex setups with extensive shielding and cable connections, leading to long measurement times and high hardware effort.
Innovation Solution
A wireless measuring device system comprising a measuring unit, communication unit, and control unit that wirelessly receives and transmits measurement signals, eliminating the need for wired connections and extensive shielding, and utilizing energy harvesting for power supply to reduce hardware requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cable connections are used to connect measuring antennas to the measuring device, then the measuring device can receive signals from all directions simultaneously, but extensive absorbing and shielding measures are necessary to suppress scattering from the cable connections
Solution Approach 1:
The patent removes the cable connections from the measuring system. Each measuring antenna is equipped with its own wireless communication unit, allowing it to transmit measurement data wirelessly to the central measuring device. This extraction of cables eliminates the scattering problem entirely while maintaining the ability to perform simultaneous multi-angle measurements.
Solution Approach 2:
The patent replaces the mechanical cable connection system with a wireless communication system. Instead of using physical cables to transmit signals from antennas to the measuring device, the system uses wireless communication units (transmitters and receivers) to establish contactless data transmission, thereby eliminating the mechanical connection that causes scattering.
2Measurement precision
If measuring antennas are moved around the device under test to achieve measurements from all directions, then comprehensive radiation pattern data can be collected, but a long measuring time is necessary
Solution Approach 1:
The patent divides the single measuring antenna into multiple measuring antennas (at least two, preferably three or more) positioned at different locations around the device under test. Each antenna independently measures radiation patterns from its specific angle, allowing simultaneous collection of multi-angle data without the need to move a single antenna through all measurement positions.
Solution Approach 2:
The patent transitions from a time-based measurement approach (moving one antenna through different angles over time) to a spatial parallelism approach (using multiple antennas at different angles simultaneously). This dimensional change from sequential temporal measurement to parallel spatial measurement dramatically reduces measurement time while maintaining data completeness.
3Measurement precision
If a shielded test chamber is used to prevent scattering from cable connections, then measurement accuracy is improved, but the setup becomes very complex and requires extensive shielding
Solution Approach 1:
The patent extracts and removes the cables that necessitate the shielded chamber. By eliminating the physical cable connections between antennas and the measuring device, the source of scattering is removed, making the shielded chamber unnecessary and thereby simplifying the overall setup while maintaining measurement accuracy.
Solution Approach 2:
The patent replaces the mechanical cable-based signal transmission system with a wireless communication system. This substitution eliminates the need for shielded chambers and extensive absorbing materials, as wireless transmission does not introduce the same scattering issues as cable connections, thereby reducing setup complexity while preserving measurement precision.
4Reliability
If power transmission cables are used to power the measuring devices, then the devices can be powered reliably, but scattering from the cables increases and more absorbing material is required
Solution Approach 1:
The patent replaces the electrical cable-based power transmission system with a wireless power transmission system. Each measuring device is equipped with a wireless power reception unit that receives power wirelessly from a central power transmission unit, eliminating the need for power cables and the associated absorbing material while maintaining reliable power supply.
Solution Approach 2:
The patent integrates multiple functions into the measuring devices. Each device simultaneously performs measurement, wireless data transmission, and wireless power reception. This multi-functionality eliminates the need for separate power cables and data cables, reducing the amount of absorbing material required while ensuring reliable operation.
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 fast and accurate measurement of multiple angles with reduced hardware effort, minimizing scattering and shielding needs, and allowing for simultaneous data collection without moving the device or antennas.
Implementation Method 1
the power reception unit is adapted to receive only wirelessly transmitted power from a central power unit
Implementation Method 2
The measuring unit is adapted to receive the measuring signal transmitted by the device under test
Data Source
AI summary
An inventive measuring device comprises a measuring unit, a communication unit and a control unit. The measuring unit is adapted to wirelessly receive a measuring signal transmitted by a device under test. The control unit is adapted to derive at least one measuring device, especially a signal level, from the received measuring signal. The communication unit is adapted to only wirelessly transmit the at least one measuring result to a central measuring unit, not being part of the measuring device.