AI 中文总结
针对5G Sub-6 GHz应用的需求，设计了一款采用方形开环谐振器的紧凑型微带三工器，通过优化结构实现高隔离度，性能优于多数现有设计。
AI 中文摘要
多标准5G新空口（New Radio）Sub-6 GHz系统的快速普及，加剧了对紧凑型、高隔离度复用组件的需求，这类组件需能通过单个共享天线端口同时路由多个频率信道，且无跨带干扰。本文介绍了一款面向5G Sub-6 GHz应用、工作于2.2 GHz、2.6 GHz和3.0 GHz的紧凑型微带三工器的设计与全波电磁仿真结果。该三工器采用方形开环谐振器，布置为三个独立的三阶切比雪夫带通滤波器信道，总计9个谐振器极点；每个信道均由标准归一化切比雪夫低通原型综合得到。三个信道通过T型结集成于公共输入端口，连接传输线短截线的尺寸经设计以实现高信道间隔离度。全波电磁仿真结果显示，三个信道的回波损耗分别为21.1 dB、23.1 dB、22.8 dB，插入损耗分别为1.08 dB、1.01 dB、0.98 dB，信道间隔离度分别为45.7 dB、45.2 dB、45.7 dB；所实现的超过45 dB的信道间隔离度，相较于近期报道的大多数微带三工器设计有显著提升。
英文摘要
The rapid proliferation of multi-standard 5G New Radio sub-6 GHz systems have intensified the demand for compact, high-isolation multiplexing components capable of simultaneously routing multiple frequency channels through a single shared antenna port without cross-band interference. This paper presents the design and full-wave electromagnetic simulation of a compact microstrip triplexer operating at 2.2, 2.6, and 3.0 GHz for 5G sub-6 GHz applications. The proposed triplexer employs square open-loop resonators arranged as three independent three-pole Chebyshev bandpass filter channels, yielding nine resonator poles in total. Each channel is synthesised from the standard normalised Chebyshev lowpass prototype. The three channels are integrated at a common input port via a T-junction, with connecting transmission line stubs dimensioned to enforce high inter-channel isolation. Full-wave EM simulation results demonstrate return losses of 21.1 dB, 23.1 dB, and 22.8 dB; insertion losses of 1.08 dB, 1.01 dB, and 0.98 dB; and inter-channel isolations of 45.7 dB, 45.2 dB, and 45.7 dB, respectively. The achieved inter-channel isolation exceeding 45 dB represents a significant improvement over the majority of recently reported microstrip triplexer designs.
Comments6 pages, 1 table, 5 figures
