Single PLL Frequency Source for Multi-Channel Wireless Communication
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Solution Overview
Problem
Current wireless communication devices face challenges in efficiently communicating over multiple non-contiguous wireless communication frequency channels simultaneously, requiring multiple frequency generation circuits and local oscillators, which can lead to increased complexity, power consumption, and design costs.
Innovation Solution
The implementation of a wireless communication device with a single Voltage Controlled Oscillator (VCO) and Phase-locked-loop (PLL) to generate a source frequency, and multiple configurable Local Oscillator (LO) generators to produce carrier signal frequencies using adjustable conversion ratios, allowing simultaneous communication over multiple channels with reduced complexity and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple frequency generation circuits and local oscillators are used to communicate over multiple non-contiguous frequency channels simultaneously, then communication capability over multiple channels is improved, but device complexity and power consumption increase
Solution Approach 1:
The patent merges multiple frequency generation functions into a single shared PLL circuit that can generate multiple source frequencies. Instead of having separate frequency generation circuits for each channel, one PLL circuit is configured to provide frequency sources for multiple non-contiguous channels, thereby reducing the number of oscillators and overall device complexity while maintaining multi-channel communication capability
Solution Approach 2:
The shared PLL circuit is designed to perform multiple functions by generating different source frequencies for different channels on demand. The single frequency generation circuit serves multiple channels simultaneously or sequentially, making it a universal component that replaces what would traditionally require multiple dedicated circuits
2Adaptability or versatility
If multiple frequency generation circuits and local oscillators are used to communicate over multiple non-contiguous frequency channels simultaneously, then communication capability over multiple channels is improved, but power consumption increases
Solution Approach 1:
By combining multiple frequency generation functions into a single shared PLL circuit, the patent reduces the total number of active components that consume power. The shared architecture allows multiple channels to utilize the same frequency generation resource, eliminating redundant power consumption from multiple separate oscillators and circuits
3Device complexity
If a single frequency source with PLL and VCO is used to generate common source frequency, then device complexity and power consumption are reduced, but ability to generate multiple carrier signal frequencies simultaneously may be compromised
Solution Approach 1:
The patent employs dynamic frequency synthesis techniques where the single PLL circuit can be reconfigured to generate different source frequencies as needed. The system dynamically adjusts the PLL output frequency and uses multiple LO generators with different conversion ratios to produce the required multiple carrier frequencies, maintaining versatility through dynamic reconfiguration rather than static dedicated circuits
Solution Approach 2:
The patent introduces multiple configurable LO generators as intermediary components between the single source frequency and the multiple carrier signal frequencies. These LO generators act as mediators that take the common source frequency and convert it into multiple different carrier frequencies through configurable conversion ratios, enabling one source to serve multiple channels
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 solution enables efficient simultaneous communication over multiple wireless communication frequency channels with reduced power consumption, die area, and design complexity, while maintaining high throughput and immunity to oscillator pulling.
Implementation Method 1
Each frequency generation circuit includes a Voltage Controlled Oscillator (VCO) controlled by a Phase-locked-loop (PLL), to generate a respective source frequency
Implementation Method 2
Each frequency generation circuit includes a Voltage Controlled Oscillator (VCO) controlled by a Phase-locked-loop (PLL), to generate a respective source frequency
Implementation Method 3
a Local Oscillator (LO) generator to convert the source frequency into a predefined carrier signal frequency according to a preset conversion ratio
Data Source
AI summary
Some demonstrative embodiments include devices, systems and/or methods of wireless communication over a plurality of wireless communication frequency channels. For example, a wireless communication device may include a frequency source to generate a source frequency signal; a plurality of local-oscillator (LO) generators to generate a respective plurality of different carrier signal frequencies based on the source frequency signal; and a plurality of radio-frequency (RF) paths to simultaneously communicate over the plurality of carrier signal frequencies, respectively.