Transceiver Attenuator Modules for Triple Transit Signal Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Microwave radio systems experience performance degradation due to the triple transit effect, where signals bounce back between indoor and outdoor units over coaxial cables, causing self-interference, which existing technologies struggle to effectively mitigate without expensive or complex tuning.
Innovation Solution
Incorporating a system with attenuator modules in both indoor and outdoor units that attenuate reflected signals multiple times, reducing the strength of unwanted signals, and using a controller to adjust attenuation and gain based on sensor feedback to minimize the triple transit effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex filters are used to separate different frequencies and reduce triple transit influences, then signal separation performance is improved, but device complexity and cost increase
Solution Approach 1:
The patent changes the frequency parameters of signals by using frequency division multiplexing, where upstream signals occupy 110-150 MHz and downstream signals occupy 150-1000 MHz. This parameter separation allows simple filters to effectively distinguish and separate signals without requiring complex filtering mechanisms, thus improving signal separation performance while keeping device complexity low
Solution Approach 2:
The patent segments the frequency spectrum into distinct bands for upstream and downstream communications. By dividing the frequency range and assigning specific bands to different signal directions, the system enables simple filters to target specific frequency segments, achieving effective signal separation without complex multi-band filtering requirements
2Object-generated harmful factors
If attenuators are used to reduce reflected signals, then triple transit effect is reduced, but desired signal strength is also reduced
Solution Approach 1:
The patent applies different attenuation characteristics to different frequency bands using frequency-selective attenuators. The attenuators are designed to provide higher attenuation specifically for reflected signal frequencies while maintaining lower attenuation for desired signal frequencies, thus reducing the triple transit effect without significantly weakening the desired signal strength
Solution Approach 2:
The patent converts the harmful reflected signals into a manageable problem by using the frequency difference between upstream and downstream signals. The attenuators exploit this frequency characteristic to selectively attenuate reflected signals, transforming the harmful triple transit effect into a controllable parameter that can be managed through frequency-based differentiation
3Object-affected harmful factors
If frequency diversity is used to avoid signal collision, then signal interference is reduced, but device complexity increases due to required filters
Solution Approach 1:
The patent uses frequency division multiplexing to assign different frequency parameters to upstream (110-150 MHz) and downstream (150-1000 MHz) signals. This parameter-based separation prevents signal collision by ensuring that signals traveling in opposite directions occupy different frequency spaces, eliminating the need for complex time-division or spatial-division multiplexing mechanisms
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
Significantly reduces noise caused by the triple transit effect, improving data transmission quality without the need for costly or sophisticated tuning, by ensuring desired signals are attenuated once while unwanted reflections are attenuated multiple times.
Implementation Method 1
an attenuator module attenuating the transmission signal
Implementation Method 2
a filter module filtering the transmission signal
Implementation Method 3
a gain module increase a gain of the transmission signal from the filter
Data Source
AI summary
Systems and methods for transceiver communication are discussed herein. An exemplary system comprises a first transceiver unit comprising a first attenuator, a filter module, a gain module, and an antenna. The first attenuator may be configured to attenuate a transmission signal from a second transceiver module over a coaxial cable. The transmission signal may comprise a primary component and a triple transit component. The first attenuator may further be configured to attenuate and provide a reflection signal over the coaxial cable to the second transceiver module. The reflection signal may be based on a reflection of at least a portion of the transmission signal. The filter module configured to filter the transmission signal. The gain module may be configured to increase the gain of the transmission signal. The antenna may be configured to transmit the transmission signal.