Multi-Band Wireless Signal Receiver with Single-Antenna Filtering
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Solution Overview
Problem
Existing technologies lack a product capable of filtering out noise from wireless signals in multiple frequency bands, leading to degraded system performance due to excess noise, especially with the addition of L5 frequency band signals in GPS systems.
Innovation Solution
A wireless signal receiving device and system that splits and filters noise from signals in multiple frequency bands using a single antenna, comprising filters and low-noise amplifiers to enhance signal quality before feeding them into a GPS module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple antennas are used to receive wireless signals in different frequency bands, then signal quality can be improved, but the number of antennas and space required increases
Solution Approach 1:
The patent segments the frequency bands by inserting bandpass filters at different positions in the signal path. Each bandpass filter is configured to pass only specific frequency bands (e.g., L1 band, L5 band), allowing a single antenna to effectively receive multiple frequency bands simultaneously by separating them through filtering. This resolves the contradiction by maintaining signal quality for multiple bands without requiring multiple antennas.
2Device complexity
If wireless signals in multiple frequency bands are received by a single antenna, then the number of antennas is reduced, but noise from multiple frequency bands degrades system performance
Solution Approach 1:
The patent extracts noise from the received wireless signals by strategically placing bandpass filters at different positions in the signal path. The filters are configured to pass only specific frequency bands and block others, effectively removing noise from unwanted frequency bands while preserving the desired signals. This extraction of noise allows a single antenna to receive multiple frequency bands without performance degradation.
Solution Approach 2:
The bandpass filters act as intermediary components between the antenna and the signal processing circuitry. These filters mediate the signal path by selectively passing desired frequency bands and blocking unwanted noise, enabling the single antenna to effectively receive multiple frequency bands while maintaining signal quality.
3Reliability
If bandpass filters are inserted at different positions to filter noise, then signal quality is improved, but circuit complexity increases
Solution Approach 1:
The patent applies local quality by configuring bandpass filters with specific frequency characteristics at different positions in the circuit. Each filter is tailored to pass specific frequency bands (e.g., L1, L5) and block others, optimizing signal quality for each frequency band at its specific location in the signal path. This localized filtering approach improves signal quality while managing circuit complexity through targeted rather than universal filtering.
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
Ensures high-quality signal reception in multiple frequency bands by reducing the number of required antennas and optimizing circuit design, while enhancing signal sensitivity and reducing noise figure.
Implementation Method 1
a first filter, coupled to the antenna, for splitting the first wireless signals in the plurality of frequency bands into wireless signals in different frequency bands
Implementation Method 2
a second filter, coupled to the first filter, for compositing the wireless signals in the different frequency bands into second wireless signals having a plurality of frequency bands
Implementation Method 3
a first low-noise amplifier (LNA), coupled to the first filter and the second filter, for receiving third wireless signals in one single frequency band; and a second LNA, coupled to the first filter and the second filter, for receiving fourth wireless signals in one single frequency band
Data Source
AI summary
A wireless signal receiving device and system are provided. The wireless signal receiving system includes a wireless signal receiving device and a Global Position System (GPS) module. The wireless signal receiving device includes an antenna for receiving first wireless signals in a plurality of frequency bands, a first filter coupled to the antenna for splitting the first wireless signals in the plurality of frequency bands into wireless signals in different frequency bands, and a second filter coupled to the first filter for compositing the wireless signals in the different frequency bands into second wireless signals having a plurality of frequency bands. The GPS module is coupled to the wireless signal receiving device. The GPS module is for receiving the second wireless signals having the plurality of frequency bands.