Reconfigurable Multimode Frequency Multiplier for Wideband RF Coverage
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Solution Overview
Problem
Current wireless communication devices require multiple voltage-controlled oscillators (VCOs) to cover various frequency ranges, leading to increased manufacturing costs, device size, and power consumption, especially with the advent of next-generation wireless standards that operate at higher frequencies and wider frequency ranges.
Innovation Solution
A multimode frequency multiplier is introduced, utilizing a reduced number of VCOs by incorporating a multiphase generator and a reconfigurable frequency multiplier, along with a switch matrix circuit, to efficiently generate multiple frequencies across an ultrawide frequency range, thereby reducing the number of components and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple voltage-controlled oscillators (VCOs) are used to cover various frequency ranges, then the frequency coverage is improved, but the manufacturing cost increases
Solution Approach 1:
A single VCO is designed to perform multiple functions by generating multiple frequency outputs through a frequency multiplication network. The VCO signal is distributed to multiple frequency multiplier stages (×2, ×3, ×4, ×5, ×6) that generate different frequency bands, allowing one oscillator to replace what would traditionally require multiple VCOs for comprehensive frequency coverage.
Solution Approach 2:
The frequency generation system is segmented into multiple frequency multiplier stages, each handling a specific multiplication factor. This segmentation allows the single VCO output to be divided into multiple frequency bands through parallel multiplier circuits, achieving wide frequency coverage while maintaining cost-effectiveness by using one VCO instead of multiple.
2Adaptability or versatility
If multiple voltage-controlled oscillators (VCOs) are used to cover various frequency ranges, then the frequency coverage is improved, but the device size increases
Solution Approach 1:
Multiple frequency generation functions are merged into a single integrated frequency multiplication network. The system combines one VCO with multiple frequency multiplier stages that share common signal paths and control logic, consolidating what would be separate oscillator circuits into a compact unified structure, thereby reducing overall device area.
Solution Approach 2:
A single VCO serves multiple frequency bands simultaneously through the frequency multiplication network, eliminating the need for multiple separate VCO circuits. This multi-functional approach significantly reduces the area required for frequency generation components while maintaining comprehensive frequency coverage.
3Adaptability or versatility
If multiple voltage-controlled oscillators (VCOs) are used to cover various frequency ranges, then the frequency coverage is improved, but the power consumption increases
Solution Approach 1:
The frequency multiplication function is segmented into multiple independent stages (×2, ×3, ×4, ×5, ×6) that can operate selectively. Only the frequency multiplier stages needed for the current operating mode are activated, reducing overall power consumption compared to running multiple VCOs continuously.
Solution Approach 2:
A single VCO provides power to multiple frequency multiplier stages, consolidating the power source into one efficient oscillator rather than powering multiple separate VCOs. This universal approach reduces total power consumption while achieving the same frequency coverage.
4Ease of manufacture
If a reduced number of VCOs is used, then the manufacturing cost is reduced, but the frequency coverage capability deteriorates
Solution Approach 1:
The frequency multiplication network employs dynamic switching mechanisms that allow selective activation of different multiplier stages based on the required frequency band. This dynamic configuration enables a single VCO to adaptively cover multiple frequency ranges, compensating for the reduced number of oscillators while maintaining comprehensive frequency coverage capability.
Solution Approach 2:
The system transitions from a single-dimension approach (one VCO per frequency band) to a multi-dimensional frequency generation approach using a single VCO with multiple multiplication factors. By adding the dimension of frequency multiplication, the system achieves wide frequency coverage with fewer oscillators, effectively resolving the contradiction between cost and capability.
Data Source
AI summary
This disclosure describes apparatuses, methods, and techniques for implementing a multimode frequency multiplier. In example implementations, an apparatus for generating a frequency includes a multimode frequency multiplier. The multimode frequency multiplier includes a multiphase generator and a reconfigurable frequency multiplier. The multiphase generator is configured to produce a first signal including multiple phase components and having a first frequency. The reconfigurable frequency multiplier is coupled in series with the multiphase generator. The reconfigurable frequency multiplier is configured to produce a second signal based on the first signal and having a second frequency that is a multiple of the first frequency.