通过大规模数据集上的逆合成实现具有低损耗的单调谐元件加载像素化可调带通滤波器
A Single-Tuning-Element Loaded Pixelated Tunable Band-Pass Filters with Low Loss via Inverse Synthesis on Massive-Scale Dataset
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中文总结 AI 辅助
该论文提出三相逆设计流程合成可调像素化带通滤波器，先获取大规模数据集，经暴力搜索识别初始种子，再用直接二分搜索算法微调。考虑4G和5G频段目标，设计的滤波器实现28%调谐范围，且仅用单个变容二极管，是微波领域首次连续可重构逆设计演示。
中文摘要 AI 辅助
本文提出了一种用于合成可调像素化带通滤波器的新型三相逆设计流程。工作流程包括：使用矩量法预计算加速的团队自定义电磁求解器获取约300000个5端口S参数样本的大规模数据集；通过暴力搜索并通过动态重新分配输入、输出和调谐端口以及对其余端口随机应用开路或短路终端来扩充数据集来识别初始种子；使用直接二分搜索算法对选定种子进行微调。考虑了两个设计目标：4G中/高频段可调带通滤波器和5G n79/UNIII频段可调带通滤波器。一个设计的滤波器在模拟中实现了28%的调谐范围，通带峰值从4.64 GHz重新配置到6.16 GHz，插入损耗从1.3 dB到1.8 dB。所有逆设计滤波器仅使用单个变容二极管，这是微波领域首次报道的连续可重构逆设计演示。
英文摘要
This paper presents a novel three-phase inverse-design flow for synthesizing tunable pixelated band-pass filters. The workflow consists of: 1) acquisition of a massive dataset ~300000 5-port S-parameter samples using the group's custom electromagnetic solvers accelerated by method-of-moments pre-computation; 2) identification of an initial seed through brute-force search with dataset augmentation by dynamically reassigning the input, output, and tuning ports and randomly applying open or short terminations to the remaining ports; and 3) fine-tuning of the selected seed using a direct-binary-search algorithm. Two design targets are considered: 4G mid-/high-band tunable band-pass filters and 5G n79/UNIII-band tunable band-pass filters. One designed filter achieves a 28% tuning range, with passband peaks reconfigured from 4.64 to 6.16 GHz and insertion loss from 1.3 to 1.8 dB in simulation. All inversely designed filters use only a single varactor, representing the first reported demonstration of continuously reconfigurable inverse design in the microwave regime.
