RF DAC Broadband Sender Architecture for Low-Noise Upconversion
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Solution Overview
Problem
Existing broadband sender systems are complex and costly, leading to increased noise and distortion due to multiple circuit stages, which hinders accurate and efficient wireless communication.
Innovation Solution
A broadband sender system utilizing a radio frequency digital-to-analog converter that modulates baseband signals with intermediate frequencies, incorporating a downconverter, upconverter, lowpass filter, bandpass filter, and mixer to reduce complexity and noise, while a numerically controlled oscillator and vector modulator enhance accuracy and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple circuit stages (linearizer module, upconverter module, power amplifier module, signal sampler module, downconverter module) are used to achieve broadband signal processing, then signal processing capability is improved, but device complexity and cost increase
Solution Approach 1:
The patent combines multiple separate circuit modules (linearizer, upconverter, power amplifier, signal sampler, downconverter) into a single integrated radio frequency digital-to-analog converter. This consolidation maintains the broadband signal processing functionality while reducing device complexity and the number of discrete components required.
Solution Approach 2:
The radio frequency digital-to-analog converter is designed to perform multiple functions simultaneously: digital-to-analog conversion, frequency upconversion, power amplification, and signal sampling. This multi-functional approach eliminates the need for separate dedicated modules for each function, thereby reducing overall system complexity.
2Adaptability or versatility
If multiple circuit stages are used to achieve broadband signal processing, then signal processing capability is improved, but noise and distortion increase
Solution Approach 1:
By integrating multiple processing functions into a single radio frequency digital-to-analog converter, the patent reduces the number of inter-stage connections and signal handoffs between modules. This minimizes the accumulation of noise and distortion that typically occurs at each interface between separate circuit stages.
3Adaptability or versatility
If multiple circuit stages are used to achieve broadband signal processing, then signal processing capability is improved, but cost increases
Solution Approach 1:
The patent consolidates five separate circuit modules into one integrated radio frequency digital-to-analog converter. This reduction in component count directly lowers manufacturing costs by reducing the number of parts that need to be procured, assembled, tested, and packaged.
Solution Approach 2:
The multi-functional radio frequency digital-to-analog converter performs digital-to-analog conversion, frequency conversion, amplification, and sampling in a single device. This eliminates the need to manufacture and assemble multiple specialized modules, thereby reducing overall system cost.
Data Source
AI summary
A broadband sender system is provided. The broadband sender system comprises a radio frequency digital-to-analog converter. In this context, the radio frequency digital-to-analog converter is adapted to emit a baseband signal modulated on a carrier signal with a first intermediate frequency and a second intermediate frequency. In addition to this, the first intermediate frequency is higher than the second intermediate frequency.