Terahertz Radiator Using Third-Harmonic Oscillators and Patch Antenna
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Solution Overview
Problem
Existing silicon-based transistors are unable to generate terahertz electromagnetic radiation with sufficiently high power due to their maximum oscillation frequency limitations, and existing designs face issues with efficiency, bandwidth, and heat dissipation when using on-chip patch antennas.
Innovation Solution
A radiator system utilizing a plurality of transistor-based oscillators coupled to a shared aperture patch antenna, configured to generate and radiate terahertz electromagnetic radiation through third harmonic power, with optimized transistor termination arrangements and coupler structures to enhance power and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If silicon-based transistors are used for generating terahertz electromagnetic radiation, then device integration and manufacturing are simplified, but the maximum oscillation frequency is insufficient to provide radiation with sufficiently high power
Solution Approach 1:
The patent changes the fundamental operating parameter by using third harmonic generation instead of fundamental frequency operation. The transistor-based oscillators operate at a lower fundamental frequency within the transistor's capability range, but generate terahertz radiation at the third harmonic frequency (3f0), achieving both high frequency and acceptable power levels
Solution Approach 2:
The patent employs resonant oscillation at third harmonic frequency to generate terahertz radiation. The oscillators are designed to resonate at frequency 3f0, utilizing resonant vibration principles to achieve high-frequency electromagnetic radiation generation that overcomes the transistor's fundamental frequency limitations
2Device complexity
If on-chip patch antennas are used for radiation, then integration is improved, but efficiency and bandwidth are compromised and heat dissipation becomes problematic
Solution Approach 1:
The patent segments the radiation function from the oscillator function by using a shared aperture patch antenna that is spatially separated from the oscillators. The oscillators are arranged in a linear array and coupled to the antenna through feed lines, allowing independent optimization of oscillator efficiency and antenna radiation performance
Solution Approach 2:
The patent introduces feed lines as intermediary elements between the oscillators and the shared aperture patch antenna. These feed lines act as coupling mechanisms that efficiently transfer power from the oscillators to the antenna while minimizing losses and enabling better heat management
3Power
If multiple transistor-based oscillators are coupled to a shared aperture patch antenna, then terahertz radiation power is enhanced, but the system complexity increases
Solution Approach 1:
The patent merges multiple oscillator outputs into a single shared aperture patch antenna. The oscillators are electrically coupled in parallel and share a common radiation aperture, combining their individual power contributions to achieve high total radiated power while using a single antenna structure rather than multiple separate antennas
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
The system achieves high power terahertz radiation with improved efficiency and bandwidth, allowing for compact design and effective heat management without additional packaging, suitable for applications in integrated circuits and various systems.
Implementation Method 1
a plurality of transistor-based oscillators each operable to generate third harmonic power
Implementation Method 2
a patch antenna operably coupled with the plurality of transistor-based oscillators for providing terahertz electromagnetic radiation
Data Source
AI summary
A radiator for providing terahertz electromagnetic radiation. The radiator includes multiple transistor-based oscillators each operable to generate third harmonic power. The radiator also includes a patch antenna operably coupled with the transistor-based oscillators for providing terahertz electromagnetic radiation based on the third harmonic power generated by the transistor-based oscillators.