Portable RF Receiver Module with Dynamic Preselector Circuit
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Solution Overview
Problem
Existing RF receiver modules lack the ability to accommodate the frequency characteristics of different noise sources, making it difficult to efficiently and reliably analyze specific interference signals.
Innovation Solution
A portable RF receiver module with a standardized interface and a preselector circuit that includes a filterbank and selection apparatus, allowing users to select and filter out predefined frequency bands, enabling efficient analysis of interference sources. The module can be quickly attached and detached from antennas using a coaxial RF connector, and features a controller for controlling the filtering and amplification processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed filter characteristic is used in the RF receiver module, then the device complexity is reduced, but the adaptability to different frequency characteristics of noise sources deteriorates
Solution Approach 1:
The patent implements a dynamic filter system where the filter characteristic can be changed based on the frequency characteristics of different noise sources. The selection apparatus allows switching between different filter configurations (e.g., low-pass, high-pass, band-pass filters with different cutoff frequencies) to adapt to various interference scenarios, making the system dynamic rather than static.
Solution Approach 2:
The patent changes the parameters of the filter circuit by providing multiple filter elements with different frequency characteristics. The selection apparatus enables switching between these different parameter configurations (cutoff frequencies, filter orders, filter types) to match the frequency characteristics of the detected noise sources, thereby resolving the contradiction between fixed complexity and adaptive performance.
2Adaptability or versatility
If multiple filter elements are provided for different frequency characteristics, then the adaptability to different noise sources is improved, but the device complexity increases
Solution Approach 1:
The patent segments the filtering function into multiple independent filter elements, each optimized for specific frequency characteristics. Instead of one complex adaptive filter, the system divides the functionality into several simpler filter modules (low-pass, high-pass, band-pass with different parameters) that can be independently selected based on the noise source characteristics.
Solution Approach 2:
The selection apparatus serves as a universal control mechanism that can switch between different filter elements for various noise scenarios. This multi-functional switching mechanism allows a single receiver module to handle multiple types of interference (co-channel, adjacent-channel, impulse noise) by selecting the appropriate filter configuration, reducing the need for multiple specialized receivers.
3Ease of operation
If a standardized interface is used for quick attachment, then the ease of operation is improved, but the measurement precision may be affected by connection variability
Solution Approach 1:
The standardized interface is designed with pre-established electrical contacts and mechanical alignment features that ensure consistent RF signal coupling before the measurement begins. The connector geometry and contact arrangement are predetermined to minimize variability, allowing quick attachment while maintaining measurement precision through careful preliminary design of the connection interface.
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 cost-efficient, band-selective, and direct measurement of interference signals, allowing users to analyze specific sources of interference efficiently and conveniently, with the ability to switch between filters for different frequency responses, and store measurement data for further analysis.
Implementation Method 1
a preselector circuit which is coupled to the standardized interface for receiving RF signals and which comprises a filter and a selection apparatus, wherein the selection apparatus is configured to allow a selection of a predefined filter characteristic of the filter and to filter out predefined frequency bands of the received RF signals
Data Source
AI summary
The invention relates to a portable radio frequency (RF) receiver module, the portable RF receiver module comprising: a standardized interface for receiving a RF signal, which comprises a RF connector and which is configured to allow as well an electrical connection and a mechanical quick attachment of the portable RF receiver module to a corresponding standardized interface of an antenna; a preselector circuit which is coupled to the standardized interface for receiving RF signals and which comprises a filter and a selection apparatus, wherein the selection apparatus is configured to allow a selection of a predefined filter characteristic of the filter and to filter out predefined frequency bands of the received RF signals. The invention further relates to a portable antenna arrangement.