Rotating Polarized Wave Transmitter Using Split-Bit RF Circuits
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Solution Overview
Problem
The implementation of wireless communication systems for IoT applications is hindered by the high cost of transmitters capable of generating rotation polarized waves, which are necessary for maintaining signal quality in fluctuating environments, especially when many sensors require wireless data collection.
Innovation Solution
The transmitter design employs a controller to generate digital data streams with alternating odd and even bits, which are processed through RF circuits with common modulators and frequency up-converters to produce rotation polarized waves, utilizing commercial RF chips and modules for QPSK or offset QPSK modulation, thereby reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a transmitter capable of generating rotation polarized waves is implemented using conventional methods (separate transmission devices for carrier frequency and polarization rotation), then signal quality is maintained in fluctuating environments, but manufacturing cost increases due to the need for new semiconductor chips or complex module assembly
Solution Approach 1:
The patent combines the carrier frequency transmission function and the polarization rotation function into a single integrated transmission device. This merging eliminates the need for separate transmission devices, thereby reducing manufacturing costs while maintaining the ability to generate rotation polarized waves for reliable signal transmission in fluctuating environments.
Solution Approach 2:
The transmission device is designed to perform multiple functions simultaneously: it transmits carrier frequency signals and generates rotation polarized waves using the same hardware components. This multi-functionality allows existing commercial RF chips and modules to be utilized, avoiding the need for expensive custom semiconductor development while maintaining signal quality.
2Productivity
If many transmitters are deployed for wireless data collection from multiple sensors, then IoT system functionality is achieved, but total system cost becomes prohibitively high due to the expense of each individual transmitter
Solution Approach 1:
The patent enables the use of inexpensive, commercially available RF chips and modules instead of expensive custom-designed transmitters. This allows for the deployment of multiple transmitters across numerous sensors in an IoT system without the total system cost becoming prohibitive, as each transmitter can be implemented using low-cost off-the-shelf components.
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 approach allows for the cost-effective implementation of rotation polarized wave transmitters, enabling reliable wireless communication in IoT systems by maintaining signal quality across varying environments without the need for expensive semiconductor chip development or complex module design.
Implementation Method 1
employing two different bit strings obtained by dividing one bit string into two different bit strings, respectively, inputting the two different bit strings into a pair of transmission circuits, and simultaneously radiating outputs of the pair of transmission circuits from the pair of antennas
Implementation Method 2
simultaneously radiating outputs of the pair of transmission circuits from the pair of antennas which are spatially orthogonal to each other to thereby generate a rotation polarized wave
Data Source
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AI summary
A controller of a transmitter outputs cyclically different digital data to equivalent transmission circuits, that is, RF circuits to generate a rotation polarized wave.