Parallel RF Channels for Ultra-Wideband Transceiver Performance
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Solution Overview
Problem
Conventional wireless communication systems face challenges in meeting increasing service capacity demands, especially when operating in ultra-wideband frequencies, due to limitations in spectrum divisions and performance degradation at wide frequency bands.
Innovation Solution
A transceiver design with multiple radio frequency channels operating in parallel, each covering a different frequency band, utilizing a superheterodyne and zero-IF structure, and an intelligent frequency configuration system that automatically adjusts working frequencies to maintain high communication performance across ultra-wide bandwidths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a distributed ultra-wideband receiver architecture is used to cover a wide frequency band, then the frequency coverage is improved, but the communication performance deteriorates
Solution Approach 1:
The ultra-wideband receiver is divided into multiple independent frequency-band receivers, each dedicated to a specific frequency band. Each receiver processes signals within its assigned band independently, avoiding the performance degradation that occurs when a single receiver attempts to handle the entire ultra-wideband spectrum. The segmentation allows each receiver to be optimized for its specific frequency range while collectively covering the full ultra-wideband spectrum.
2Adaptability or versatility
If multiple radio frequency channels are used to cover ultra-wideband frequencies, then the frequency coverage is improved, but the device complexity increases
Solution Approach 1:
Multiple frequency-band receivers are merged into a single integrated receiver structure that processes all frequency bands simultaneously. The merged architecture shares common components such as the local oscillator system, mixer stages, and signal processing pathways, reducing the overall hardware complexity compared to having completely separate receiver chains for each frequency band.
Solution Approach 2:
The receiver is designed with universal components that can handle multiple frequency bands. The local oscillator generates signals that can be distributed to multiple mixer stages, and the same hardware architecture is used across different frequency bands, allowing a single multi-functional receiver to replace what would otherwise require multiple specialized receivers.
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
This design enhances wireless communication performance while reducing hardware implementation difficulties, achieving efficient frequency coverage and performance gains by allowing each radio frequency channel to operate in distinct frequency bands and automatically configuring frequencies for optimal performance.
Implementation Method 1
a first mixer, wherein a first end of the first mixer is connected to an output end of the up-conversion apparatus by using the second switch, and a second end of the first mixer is connected to a phase-locked loop by using a third switch and a fourth switch, and the first mixer is configured to: receive a first local oscillator signal provided by the phase-locked loop, and perform, according to the first local oscillator signal provided by the phase-locked loop, frequency conversion on the intermediate frequency signal obtained by the up-conversion apparatus, to obtain a frequency-converted signal
Data Source
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AI summary
A transceiver is provided. The transceiver includes: a baseband control apparatus (21); an up-conversion apparatus (22), connected to the baseband control apparatus (21), and configured to perform up-conversion on a baseband signal generated by the baseband control apparatus (21), to obtain an intermediate frequency signal; at least two radio frequency channels (23) disposed in parallel, connected to the up-conversion apparatus (22) by using a second switch (S2), and configured to perform frequency conversion, amplification, and filtering on the intermediate frequency signal, to obtain a radio frequency signal corresponding to the frequency band covered by the each radio frequency channel; and an antenna (24), connected in series with an output end of any radio frequency channel of the at least two radio frequency channels (23) by using a first switch (S1), and configured to transmit the radio frequency signal obtained by the radio frequency channel. At least two radio frequency channels are disposed in parallel, each radio frequency channel covers a frequency range, and the radio frequency channels work in different working frequencies, so that relatively high wireless communication performance is maintained when an ultra wide bandwidth is implemented.