研究目的
To compare the effectiveness of full 3D and unit cell models in analyzing waveguide-embedded frequency multiplier arrays, focusing on their ability to predict output power, account for higher order mode excitation, and other nonlinear effects.
研究成果
The full 3D model more accurately predicts the output power as a function of frequency and input power compared to the unit cell model. The study suggests a design methodology starting with a preliminary unit cell design that is then fine-tuned using a full 3D model. This is the first presentation of a complete 3D-EM simulation including all nonlinear elements of a waveguide-embedded frequency multiplier array in a Harmonic Balance simulation.
研究不足
The study does not account for the self-heating effect in the HBV model, and there are unmodeled sources of errors such as unknown diode yield, fabrication and assembling tolerances, and losses due to surface conductivity on the array substrate.
1：Experimental Design and Method Selection:
The study employs FEM EM modeling for the full wave, large-signal analysis of a waveguide-embedded frequency multiplier array, including every nonlinear element in a Harmonic Balance simulation.
2：Sample Selection and Data Sources:
A 247 GHz fixed tuned 72-diode HBV tripler is used for comparison between the models and measurements.
3：List of Experimental Equipment and Materials:
The full 3D model is implemented in Ansys HFSS, and the Harmonic Balance simulation is carried out in NI Microwave Office. The device includes a 6 × 12 dipole coupled InGaAs HBV array on a 185 μm thick InP substrate.
4：Experimental Procedures and Operational Workflow:
The full 3D model and unit cell model are compared in terms of their predictions of output power versus input power and frequency, including the analysis of higher order mode excitation.
5：Data Analysis Methods:
The output power and return loss are measured and compared with the models' predictions, with adjustments made for unmodeled sources of errors.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
