RF Polarization Switching for UAV Measurement Repeatability
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Solution Overview
Problem
Existing UAV systems require time-consuming and costly manual reorientation for RF polarization changes, limiting measurement repeatability and flexibility, and are prone to mechanical failures due to moving parts.
Innovation Solution
A method and system for RF measurement using a mobile platform with a switch unit controlled by a control unit to electronically switch between antenna channels for different polarizations without mechanical motors, allowing in-flight polarization changes and remote control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If mechanical motors are used to reorient antennas for polarization changes, then polarization measurement capability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent replaces mechanical motors with electronic switching between multiple fixed antennas having different polarization orientations. The switch unit electronically connects different antennas to the measurement device based on control signals, eliminating mechanical moving parts while maintaining the ability to measure different polarizations.
Solution Approach 2:
The patent divides the polarization measurement function into multiple separate antennas, each dedicated to a specific polarization orientation. Instead of one antenna that mechanically changes orientation, multiple static antennas handle different polarizations simultaneously through electronic switching.
2Adaptability or versatility
If mechanical motors are used to reorient antennas, then polarization switching is enabled, but reliability decreases due to moving parts
Solution Approach 1:
The patent eliminates mechanical motors and moving parts by using electronic switching between fixed antennas. The switch unit is a solid-state component that reliably connects different antennas without mechanical wear, thereby improving system reliability while maintaining polarization switching capability.
3Adaptability or versatility
If manual reorientation is performed to change polarization, then measurement capability is achieved, but time consumption increases
Solution Approach 1:
The patent replaces manual or mechanical reorientation with electronic switching controlled by control signals. The switch unit can rapidly connect different antennas to the measurement device in response to control signals, enabling fast polarization changes without time-consuming mechanical movements.
Solution Approach 2:
The patent pre-positions multiple antennas with different polarization orientations in advance. When measurement of a specific polarization is needed, the corresponding antenna is already in place and can be immediately connected through electronic switching, eliminating the time required for reorientation.
4Adaptability or versatility
If mechanical motors are used for polarization changes, then in-flight switching is limited, but weight increases
Solution Approach 1:
The patent replaces heavy mechanical motors with lightweight electronic switching components. The switch unit and control circuitry weigh significantly less than mechanical drive systems, reducing overall system weight while enabling in-flight polarization switching through electronic control.
Data Source
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AI summary
The invention generally relates to a radio frequency measurement method and a radio frequency measurement system. The method comprises the steps of: - capturing a radio frequency signal (20, 24) with at least one antenna (32) that is connected to at least one measurement device (44) via at least two channels (38, 40, 42), - measuring at least one radio frequency signal parameter by means of the at least one measurement device (44), - controlling at least one switch unit (46) by at least one control unit (48), wherein the switch unit (46) switches between the at least two channels (38, 40, 42), wherein the at least two channels (38, 40, 42) are configured to provide radio frequency signal components of the radio frequency signal captured on different polarizations (22, 26), and - performing at least two measurements of the at least one radio frequency signal parameter at different polarizations (22, 26).