Transmitter Detection Circuit Using Dual Modulation for Channel Mismatch Correction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current detection circuits in signal transmitter devices face challenges in correcting channel mismatches, especially at higher operating frequencies, leading to increased power consumption and implementation difficulties.
Innovation Solution
A signal transmitter device with a detection circuit that performs twice signal modulations on the output signal to detect a signal component with baseband frequency, using a first mixer, filter, and second mixer to generate processed signals, which are then processed by a compensation circuit to correct channel mismatches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a detection circuit is employed to detect the output signal of the transmitter, then the channel mismatch can be corrected, but the power consumption increases and implementation becomes difficult with increasing operating frequency
Solution Approach 1:
The patent changes the frequency parameter of the signal for detection. Instead of detecting the original high-frequency output signal directly, the system modulates the signal to a lower frequency (baseband frequency) for detection. This parameter change allows the detection circuit to operate at a lower frequency, reducing power consumption and simplifying implementation while still enabling accurate channel mismatch correction.
Solution Approach 2:
The patent applies preliminary modulation action to the output signal before detection. By performing signal modulation to convert the high-frequency signal to a lower frequency signal in advance, the system prepares the signal for easier detection at lower frequencies. This preliminary action reduces the detection circuit's power consumption and complexity requirements.
2Reliability
If a detection circuit is employed to detect the output signal of the transmitter, then the channel mismatch can be corrected, but the implementation becomes difficult with increasing operating frequency
Solution Approach 1:
The patent changes the frequency parameter of the signal for detection. Instead of detecting the original high-frequency output signal directly, the system modulates the signal to a lower frequency (baseband frequency) for detection. This parameter change allows the detection circuit to operate at a lower frequency, reducing power consumption and simplifying implementation while still enabling accurate channel mismatch correction.
Solution Approach 2:
The patent applies preliminary modulation action to the output signal before detection. By performing signal modulation to convert the high-frequency signal to a lower frequency signal in advance, the system prepares the signal for easier detection at lower frequencies. This preliminary action reduces the detection circuit's power consumption and complexity requirements.
3Productivity
If the detection circuit operates at higher frequencies, then the transmitter can transmit data correctly, but the requirements for the detection circuit become higher and power consumption increases
Solution Approach 1:
The patent applies preliminary modulation action to the output signal before detection. By performing signal modulation to convert the high-frequency signal to a lower frequency signal in advance, the system prepares the signal for easier detection at lower frequencies. This preliminary action reduces the detection circuit's power consumption and complexity requirements.
Solution Approach 2:
The patent introduces an intermediary modulation process between the high-frequency transmitter output and the detection circuit. This intermediary step converts the high-frequency signal to a lower frequency signal, acting as a bridge that allows the detection circuit to operate at lower frequencies while still accurately detecting the transmitted signal characteristics for channel mismatch correction.
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 reduces the requirements for the detection circuit, lowers the bandwidth needed for the ADC, and decreases power consumption by measuring the signal component at a lower frequency, making it easier to implement and more efficient.
Implementation Method 1
The first mixer is configured to perform a first square operation according to the output signal, in order to generate a first processed signal
Implementation Method 2
The first filter is configured to perform a first filtering operation according to the first processed signal, in order to generate a second processed signal
Implementation Method 3
The second mixer is configured to perform a second square operation according to the second processed signal, in order to generate a third processed signal
Data Source
AI summary
A signal transmitter device includes a transmitter and a detection circuit. The transmitter is configured to transmit an output signal based on a first baseband signal and a second baseband signal, in which the first baseband signal and the second baseband signal have a baseband frequency. The detection circuit is configured to perform twice signal modulations according to the output signal to detect a signal component, which has the baseband frequency, of the output signal, in order to control a compensation circuit to correct a channel mismatch of the transmitter.