RF Signal Analysis Using Quantum Sensor Frequency Tuning

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Solution Overview

Problem

Conventional RF signal analysis systems lack fine-tunable and frequency-dependent control of sensitivity and dynamic range, as attenuators affect all frequencies and filter banks require programming based on prior data.

Innovation Solution

A measurement system utilizing an optically transparent enclosure with an optically pumpable medium exposed to an RF signal, where an optical pump modulates light intensity and a field generator controls electric or magnetic fields to adjust absorption sensitivity and frequency, allowing for precise detection of RF signals.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional attenuators are used to control sensitivity, then the dynamic range can be adjusted, but all frequency components are attenuated uniformly without frequency-dependent control

Engineering Contradiction:
Improvefrequency-dependent control of sensitivityVSAvoidcomplexity of sensitivity control system
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent changes the physical parameters of the quantum sensor (energy state, magnetic field strength, temperature) to achieve frequency-dependent sensitivity control. By adjusting these parameters, the sensor's resonance frequency and sensitivity profile are tuned to match specific frequency ranges, eliminating the need for complex electronic control systems while achieving adaptive frequency-selective attenuation.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent replaces conventional electronic attenuators and filter banks with a quantum sensor-based system that uses quantum mechanical effects (such as atomic transitions, spin resonance, or quantum dot energy levels) to achieve frequency-selective signal attenuation. This substitution eliminates the need for programmed electronic filters while providing inherent frequency-dependent control through quantum state manipulation.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If filter banks are used to attenuate certain frequency ranges, then frequency-selective control is achieved, but programming must be based on previously measured data

Engineering Contradiction:
Improvereal-time sensitivity adjustmentVSAvoidtime for programming and data measurement
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent performs preliminary characterization of the quantum sensor's frequency response and sensitivity properties during the device fabrication or initial setup phase. This pre-measured data is stored and used to quickly configure the sensor for different frequency ranges without requiring time-consuming real-time measurements or iterative programming, thus reducing operational delay while maintaining reliable frequency-selective control.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The quantum sensor system automatically adjusts its sensitivity and frequency response based on pre-stored characterization data without requiring external programming or manual configuration. The system self-configures by selecting appropriate quantum states or operational modes corresponding to the desired frequency range, eliminating the need for external control programming and reducing operational time.

Inventive Principle:
Principle #25Self-service

3Measurement precision

If quantum sensors are used for RF signal analysis, then fine-tunable and frequency-dependent control of sensitivity is achieved, but the system complexity increases

Engineering Contradiction:
Improvesensitivity control precisionVSAvoidcomplexity of measurement system
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent designs the quantum sensor system to perform multiple functions using a single device: frequency detection, sensitivity control, and signal attenuation are all achieved through the same quantum sensor mechanism. By adjusting the quantum sensor's operational parameters (such as magnetic field strength, optical pumping power, or microwave frequency), the system can adapt to different frequency ranges and sensitivity requirements without requiring separate components for each function, thus reducing overall system complexity despite the advanced physics involved.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 fine-tunable and frequency-dependent control of sensitivity and dynamic range, effectively analyzing RF signals with improved sensitivity and reduced sensitivity loss across the frequency range.

Implementation Method 1

an optically pumpable medium being exposed to an electromagnetic field of the RF signal to be analyzed

Methodology Applied
Scientific EffectQuantum absorption: Absorption (EM radiation)

Implementation Method 2

an optical pump for penetrating the medium with intensity-modulated light, wherein the intensity defines an absorption sensitivity of the medium

Methodology Applied
Scientific EffectOptical pumping: Absorption (EM radiation)

Implementation Method 3

a field generator for generating an electric and/or magnetic field within the enclosure, wherein a strength of the generated field defines an absorption frequency of the medium

Methodology Applied
Scientific EffectElectric field generation: Electric Field

Implementation Method 4

a field generator for generating an electric and/or magnetic field within the enclosure, wherein a strength of the generated field defines an absorption frequency of the medium

Methodology Applied
Scientific EffectMagnetic field generation: Magnetic Field

Implementation Method 5

a detector for detecting an optical property of the penetrating light passing through the medium

Methodology Applied
Scientific EffectOptical detection: Photoelectric Effect

Data Source

PatentUS11921142B2Measurement system and method for analyzing RF signals
Publication Date: 2024.03.05 ROHDE & SCHWARZ GMBH & CO KG
  • US11921142B2 patent drawing
  • US11921142B2 patent drawing
  • US11921142B2 patent drawing

AI summary

Disclosed is a measurement system for analyzing RF signals, comprising an optically transparent enclosure including an optically pumpable medium being exposed to an electromagnetic field of the RF signal to be analyzed; an optical pump for penetrating the medium with intensity-modulated light, the intensity defining an absorption sensitivity of the medium; a field generator for generating an electric and/or magnetic field within the enclosure, a strength of the generated field defining an absorption frequency of the medium; a controller for controlling the absorption sensitivity of the medium in dependence of the absorption frequency of the medium; and a detector for detecting an optical property of the penetrating light passing through the medium. This facilitates fine-tunable and frequency-dependent control of sensitivity and dynamic range for spectral analysis of RF signals.