Interleaved Rotary Traveling Wave Oscillators With Inductance Enhancement
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Solution Overview
Problem
Rotary traveling wave oscillators face challenges in reducing power consumption and phase noise while maintaining efficient operation and compact design.
Innovation Solution
The implementation of interleaved rotary traveling wave oscillators with increased inductance through parallel and spaced conductors and crossovers, which enhances impedance and reduces phase noise, allowing for natural phase-locking and efficient power usage without significant area increase.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If traditional rotary traveling wave oscillators are used, then the oscillator can operate, but power consumption is high and phase noise is poor
Solution Approach 1:
The patent combines multiple oscillators into an interleaved configuration where they share common conductors and crossovers. This merging allows the oscillators to mutually enhance each other's inductance through their magnetic fields, achieving lower power consumption and reduced phase noise while maintaining compact area.
Solution Approach 2:
The patent transitions from single-oscillator operation to multi-oscillator interleaved operation, adding the dimension of multiple phase-shifted oscillators working together. This dimensional change enables the system to achieve superior power efficiency and phase noise performance through constructive interference and shared magnetic flux.
2Area of stationary object
If oscillator area is reduced for compact design, then compactness is improved, but power consumption increases and phase noise worsens
Solution Approach 1:
By merging multiple oscillators into an interleaved structure that shares conductors and crossovers, the patent achieves compact area while the mutual inductance enhancement among oscillators compensates for the reduced individual oscillator size, maintaining low power consumption and good phase noise performance.
3Reliability
If inductance is increased through parallel conductors, then impedance increases and phase noise improves, but device complexity increases
Solution Approach 1:
The patent merges multiple oscillators to share common conductors and crossovers, achieving increased effective inductance through their parallel operation. This approach increases phase noise performance while avoiding the complexity of adding dedicated inductors, as the transmission line structure itself provides the necessary inductance enhancement.
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 decreases power consumption, improves phase noise by approximately 3 dB, and maintains the oscillators' compactness, achieving a fourfold improvement in the figure of merit related to power and phase noise.
Implementation Method 1
the conductors of the first and second crossovers are spaced apart and parallel to each other over a sufficient length that the inductance of the crossovers is increased
Data Source
AI summary
A plurality of inductance enhanced interweaved rotary traveling wave oscillators (RTWO) is disclosed. Portions of the transmission line conductors are increased in length and run in parallel. Because the currents in these portions travel in the same direction, the inductance of these inductors is increased. By controlling the length of the transmission line conductors in these areas compared to the lengths where the currents in the oscillators travel in opposite directions, the overall impedance of the oscillators can be increased. Increased impedance leads to lower power and lower phase noise for the oscillators. Additionally, the interweaved oscillators are phase-locked to each other.