This letter presents a non‐reciprocal diplexer with integrated functions of a conventional bandpass diplexer and two isolators. This is achieved by spatio‐temporally modulating the resonator frequencies in a coupled‐resonator diplexer. Due to the high channel‐to‐channel isolation, the diplexer channels can be independently modulated without affecting each other. A microstrip diplexer example is demonstrated with good agreement between the measurement and the simulation. The fabricated diplexer has two non‐reciprocal bandpass channels at 829 and 997 MHz, with a minimal insertion loss of 4.9 and 6.1 dB, and a 20‐dB isolation bandwidth of 38 and 37 MHz, respectively. To the best of the authors' knowledge, this is the first time that a non‐reciprocal diplexer has been presented.

中文翻译：

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不可逆的带通双工器

这封信提出了一种具有传统带通双工器和两个隔离器集成功能的不可逆双工器。这是通过在耦合谐振器双工器中时空调制谐振器频率来实现的。由于较高的通道间隔离度，双工器通道可以独立调制而不会互相影响。演示了一个微带双工器示例，在测量和仿真之间具有很好的一致性。人造双工器具有两个分别为829和997 MHz的不可逆带通通道，最小插入损耗为4.9和6.1 dB，隔离带宽分别为38和37 MHz。据作者所知，这是首次出现不可逆双工器。