Frequency Band Identification Circuit with Reference Mixing and Filtering
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Solution Overview
Problem
Existing circuit arrangements for transmitting uplink and downlink signals require complex structures with multiple filter devices and amplifiers, leading to high manufacturing costs and space requirements, and lack efficient methods for accurately identifying frequency bands or channels.
Innovation Solution
A circuit arrangement with a signal coupler, mixer, filter device, and evaluation unit that uses a reference signal to identify frequency bands or channels through signal mixing and filtering, allowing for accurate and rapid identification of frequency bands or channels, reducing complexity and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple filter devices and amplifiers are used for frequency band identification, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple filter devices into a single filter device that can selectively filter different frequency bands. Instead of using separate filters for each frequency band, the invention uses one filter device that can be configured to pass different frequency ranges, thereby reducing the number of components while maintaining the ability to accurately identify multiple frequency bands.
Solution Approach 2:
The filter device is designed to perform multiple functions by filtering different frequency bands sequentially or selectively. The same filter device can be used to identify various frequency bands (e.g., LTE, 5G, Wi-Fi) by adjusting its filtering characteristics, eliminating the need for dedicated filter devices for each frequency band or application.
2Measurement precision
If multiple filter devices and amplifiers are used for frequency band identification, then measurement precision is improved, but manufacturing costs increase
Solution Approach 1:
The patent combines multiple filter devices into a single filter device that can selectively filter different frequency bands. Instead of using separate filters for each frequency band, the invention uses one filter device that can be configured to pass different frequency ranges, thereby reducing the number of components while maintaining the ability to accurately identify multiple frequency bands.
Solution Approach 2:
The filter device is designed to perform multiple functions by filtering different frequency bands sequentially or selectively. The same filter device can be used to identify various frequency bands (e.g., LTE, 5G, Wi-Fi) by adjusting its filtering characteristics, eliminating the need for dedicated filter devices for each frequency band or application.
3Measurement precision
If multiple filter devices and amplifiers are used for frequency band identification, then measurement precision is improved, but the area occupied increases
Solution Approach 1:
The patent combines multiple filter devices into a single filter device that can selectively filter different frequency bands. Instead of using separate filters for each frequency band, the invention uses one filter device that can be configured to pass different frequency ranges, thereby reducing the number of components while maintaining the ability to accurately identify multiple frequency bands.
Solution Approach 2:
The filter device is designed to perform multiple functions by filtering different frequency bands sequentially or selectively. The same filter device can be used to identify various frequency bands (e.g., LTE, 5G, Wi-Fi) by adjusting its filtering characteristics, eliminating the need for dedicated filter devices for each frequency band or application.
4Reliability
If amplifier devices are activated for all frequency bands, then reliability is improved, but energy consumption increases
Solution Approach 1:
The patent implements dynamic activation of amplifier devices based on the detected frequency band. Instead of keeping all amplifiers continuously active, the system dynamically activates only the amplifier corresponding to the currently active frequency band (e.g., LTE amplifier when LTE signal is detected, 5G amplifier when 5G signal is detected). This dynamic approach ensures reliable signal transmission for the active band while minimizing energy consumption by keeping other amplifiers inactive.
Solution Approach 2:
The frequency band identification system automatically controls the activation state of amplifier devices based on the detected signal. The system self-regulates which amplifiers are active without requiring external control, ensuring that the appropriate amplifier is always active for the current frequency band while minimizing overall energy consumption.
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 reliable, rapid, and efficient identification of frequency bands or channels, enabling precise control of amplifier devices and signal paths, and adaptability to different radio standards and countries, while minimizing energy consumption and manufacturing costs.
Implementation Method 1
at least one mixer for mixing the extracted signal and the reference signal
Implementation Method 2
at least one filter device for low-pass or band-pass filtering the mixed signal
Data Source
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AI summary
The invention relates to a circuit arrangement for transferring uplink and downlink signals between at least one terminal (2) and at least one antenna (5), wherein the circuit arrangement (1) comprises at least one signal coupler (9) for providing a decoupled uplink or downlink signal, the circuit arrangement (1) comprising at least one device (15) for providing a reference signal having adjustable frequency, the circuit arrangement (1) comprising at least one mixer (14) for mixing the decoupled signal and the reference signal and at least one filter device (16) for low-pass or bandpass filtering of the mixed signal, the circuit arrangement (1) comprising at least one evaluating device (7) for analyzing the filtered signal, a frequency band (FB1, FB2, FB3) or channel (K1,..., K6) in which the transferred signal is transferred being identifiable according to the adjusted frequency of the reference signal and at least one signal property of the filtered signal, and to a method for identifying a frequency band (FB1, FB2, FB3) or channel (K1,..., K6).