Observation Signal Generation Device for RF Spectrum Analysis
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional methods are complex and inefficient for observing the frequency spectrum of phenomena like water vapor.
Innovation Solution
An observation signal generation device with a local signal generator, mixers, IF filters, an RF filter, and an RF attenuator, which generates and filters intermediate frequency signals to produce observation signals reflecting the intensity of RF signals with different frequencies using a single local signal frequency, simplifying the process and reducing the frequency bandwidth required.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional methods are used to observe frequency spectrum, then observation can be performed, but the process is complex and inefficient
Solution Approach 1:
The patent segments the frequency spectrum observation into multiple parallel processing paths using multiple mixers and IF filters. Each mixer processes a specific frequency band simultaneously, dividing the complex spectrum analysis into manageable segments that can be processed in parallel, thereby simplifying the overall process and improving efficiency
Solution Approach 2:
The local signal generator produces a single local signal that is universally used across multiple mixers to observe different frequency components. This multi-functional approach allows one local signal to enable observation of multiple frequency bands simultaneously, reducing system complexity while maintaining observation capability
2Measurement precision
If multiple local signals of different frequencies are used, then frequency spectrum can be observed, but the frequency bandwidth required increases
Solution Approach 1:
The patent segments the frequency spectrum into multiple bands and assigns each band to a dedicated mixer-IF filter path. This segmentation allows the system to observe the entire frequency spectrum using a single local signal by processing different frequency ranges in parallel through multiple paths, thereby maintaining observation accuracy while reducing the required frequency bandwidth
Solution Approach 2:
The patent transitions from a single-frequency local signal approach to a multi-path parallel processing approach. Instead of varying the local signal frequency to observe different bands (which would require wide bandwidth), the system uses multiple simultaneous paths with different IF filter characteristics, adding a dimensional aspect to the observation process that reduces bandwidth requirements
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 observation of frequency spectra with a simpler configuration and process, accurately reflecting the intensity of RF signals across multiple frequencies with reduced observation time and bandwidth, compared to conventional methods.
Implementation Method 1
a first mixer configured to mix a radio frequency (RF) signal of an observation object having a plurality of frequency components with the local signal and output a first intermediate frequency (IF) signal
Data Source
AI summary
An observation signal generation device includes a local signal generator, a first mixer which mixes an RF signal to be observed with the local signal and outputs a first IF signal, a second mixer which mixes the RF signal and the local signal and outputs a second IF signal, an first IF filter which includes a first intermediate frequency obtained by subtracting a frequency of the local signal from a first frequency of the RF signal in a passband, includes a second intermediate frequency obtained by subtracting a frequency of the RF signal from the frequency of the local signal in an attenuation band, and filters the first IF signal to generate a first observation signal, and an second IF filter includes the first intermediate frequency in the attenuation band and the second intermediate frequency in the passband, and filters the second IF signal to generate a second observation signal.