RF Signal Repeater for Controlled Anechoic Chamber Testing
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Solution Overview
Problem
Existing RF component testing methods face inaccuracies and inefficiencies due to uncontrollable environmental factors in field tests and the lack of real-world conditions in anechoic chambers, leading to costly and repetitive testing, especially for vehicle-mounted antennas.
Innovation Solution
A signal measurement system that combines an enclosed RF testing facility with an exterior antenna to receive and replicate real-world RF broadcast signals, using a repeater to generate an RF testing signal that mimics actual broadcast conditions, allowing for controlled and repeatable testing of RF components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If field tests are conducted to test RF components, then real-world conditions are captured, but testing accuracy and reliability deteriorate due to uncontrollable environmental factors
Solution Approach 1:
The patent introduces a signal source that receives actual RF broadcast signals through an exterior antenna and generates testing signals that replicate real-world conditions. This intermediary system allows the controlled environment to simulate field conditions, thereby maintaining both adaptability to real-world scenarios and reliability through environmental control.
Solution Approach 2:
The system copies actual RF broadcast signals received from external antennas and uses these copied signals to create testing scenarios that mimic real-world conditions. This allows the controlled environment to reproduce field test conditions without the uncontrollable variables present in actual field testing.
2Adaptability or versatility
If field tests are conducted to test RF components, then real-world propagation conditions are experienced, but testing costs and time consumption increase
Solution Approach 1:
The signal source acts as an intermediary that captures real RF broadcast signals and reproduces them in the controlled environment, eliminating the need for costly and time-consuming field tests while maintaining the benefit of experiencing actual propagation conditions.
Solution Approach 2:
The system performs preliminary capture and analysis of RF broadcast signals before conducting tests, allowing all necessary propagation conditions to be pre-established in the controlled environment, thereby eliminating the need for repeated field tests.
3Reliability
If an RF anechoic chamber is used for testing, then environmental control is achieved, but real-world RF signal conditions are lost
Solution Approach 1:
The signal source serving as an intermediary receives actual RF broadcast signals from external antennas and introduces them into the controlled anechoic chamber environment. This allows the chamber to maintain its environmental control benefits while simultaneously providing authentic real-world RF signal conditions for testing.
4Adaptability or versatility
If field tests are conducted for vehicle-mounted antennas, then actual installation conditions are tested, but logistical complexity and costs increase
Solution Approach 1:
The system uses an intermediary signal source that receives real RF broadcast signals and reproduces them in the controlled environment, allowing vehicle-mounted antennas to be tested under actual installation conditions without the logistical complexity of conducting field tests on roads.
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 system reduces testing costs and logistical burdens by simulating real-world conditions within a controlled environment, enabling accurate and efficient evaluation of RF components without the need for extensive field testing, thereby shortening development cycles and minimizing environmental impacts.
Implementation Method 1
an exterior antenna disposed outside the facility for receiving an RF broadcast signal
Implementation Method 2
A repeater, acting as a signal source, is in communication with the exterior antenna for receiving the RF broadcast signal from the exterior antenna and generating an RF testing signal
Data Source
AI summary
A signal measurement system tests an RF component in an RF test facility, such as an RF anechoic chamber. The system includes a repeater which is connected to an exterior antenna disposed outside the chamber and a transmitting antenna disposed inside the chamber. The repeater receives the RF broadcast signal from the exterior antenna and rebroadcasts it as an RF testing signal inside the chamber. The subject antenna receives the RF testing signal, which is then analyzed with a computer. The repeater may also modify the RF testing signal to produce a wide variety of test situations that mimic those available in a traditional field-test.