Abstract

This paper presents a high-performance microstrip diplexer based on the coupled triangular microstrip cells. The proposed diplexer has a compact size of 0.018 λg². It is designed to work at 1 GHz for aeronautical military systems and aeronautical navigation and 1.3 GHz for active sensors, GNSS repeaters, radiolocation, and satellite systems. The low insertion and return losses better than 0.21 dB and 25 dB respectively, are obtained at both channels. Another advantage of this diplexer is high isolation of 40 dB between its channels. Moreover, the 1st, 2nd and 3rd harmonics are suppressed with a maximum level of − 30 dB. The designing process is based on proposing an LC model of a novel microstrip cell. Then, the effective parameter on the resonance frequency is found. To verify the designing method, the introduced diplexer is simulated, fabricated and measured. The simulation results are in a good agreement with the measurements.

中文翻译：

---

使用新型结构的高性能微型微带双工器，用于无线L波段应用

摘要

本文提出了一种基于耦合的三角形微带单元的高性能微带双工器。所提出的双工器具有0.018λG的紧凑尺寸²。它设计用于航空军事系统和航空导航，工作频率为1 GHz，用于有源传感器，GNSS中继器，无线电定位和卫星系统的工作频率为1.3 GHz。在两个通道上均获得了分别优于0.21 dB和25 dB的低插入损耗和回波损耗。该双工器的另一个优点是其通道之间的隔离度高达40 dB。此外，以最大-30 dB的电平抑制一次，二次和三次谐波。设计过程基于提出新型微带电池的LC模型。然后，找到关于谐振频率的有效参数。为了验证设计方法，对引入的双工器进行了仿真，制造和测量。仿真结果与测量结果吻合良好。