Signal Processing Circuit Harmonics Suppression Mixer
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current signal processing circuits for wide frequency bandwidth communication face challenges in reducing circuit area and power consumption, with existing solutions increasing cost and complexity due to the need for multiple band selection filters and harmonics suppression mixers.
Innovation Solution
A signal processing circuit that utilizes multiple multiplying and adding means with controlled phase differences to generate signals, allowing for harmonics suppression and operation as either a harmonics suppression mixer or a double-balanced mixer based on a control signal, reducing the number of required filters and mixers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple band selection filters are used to cover wide frequency bandwidth, then the frequency coverage is improved, but the device complexity and cost increase
Solution Approach 1:
The frequency converter is designed to perform multiple functions: it can operate as either a double-balanced mixer or a harmonics suppression mixer depending on the control signal state. This multi-functionality allows a single circuit to replace what would traditionally require multiple specialized circuits, thereby reducing device complexity while maintaining wide frequency coverage capability
Solution Approach 2:
The frequency converter's operation mode is dynamically switchable based on the control signal. When the control signal is at a first level, it operates as a double-balanced mixer; when at a second level, it operates as a harmonics suppression mixer. This dynamic adaptability allows the system to optimize performance for different frequency ranges without requiring multiple fixed circuits
2Device complexity
If harmonics suppression mixer is used to reduce number of band selection filters, then the device complexity is reduced, but the circuit area and power consumption increase
Solution Approach 1:
The invention merges the functionality of a double-balanced mixer and a harmonics suppression mixer into a single frequency converter circuit. By combining these two previously separate circuits into one, the total circuit area is reduced while still providing the harmonics suppression capability needed to reduce the number of band selection filters
3Device complexity
If harmonics suppression mixer is used to reduce number of band selection filters, then the device complexity is reduced, but the power consumption increases
Solution Approach 1:
The frequency converter dynamically adjusts its power consumption based on operational requirements. When operating in double-balanced mixer mode (control signal at first level), it consumes less power. When switching to harmonics suppression mixer mode (control signal at second level), it consumes more power but provides the necessary harmonics suppression. This dynamic power management allows the system to minimize overall power consumption while still providing harmonics suppression when needed
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 effectively reduces circuit area and power consumption while maintaining harmonics suppression capabilities, thereby lowering costs and simplifying the circuit structure.
Implementation Method 1
a first multiplying means (100) which multiplies a first signal including a first frequency component by a second signal including a second frequency component and thereby outputs a third signal
Implementation Method 2
a first adding means (103) which adds the third signal with a first weight, the fifth signal with a second weight and the seventh signal with a third weight
Implementation Method 3
a signal generating means (104) which controls the first phase difference and the second phase difference based on a control signal and thereby outputs the second signal, the fourth signal and the sixth signal
Data Source
AI summary
A signal processing circuit includes a first multiplying unit which multiplies a first signal including a first frequency by a second signal including a second frequency and outputs a third signal, a second multiplying unit which multiplies the first signal by a fourth signal of a second frequency with phase lagging of a first phase difference relative to the second signal and outputs a fifth signal, a third multiplying unit which multiplies the first signal by the sixth signal of the second frequency with phase lagging of a second phase difference relative to the second signal and outputs a seventh signal, a first adding unit which adds the third signal, the fifth signal and the seventh signal respectively weighted and a signal generating unit which controls the first and the second phase difference based on a control signal and outputs the second, the fourth and the sixth signal.