Fully-Reconfigurable Non-Reciprocal Bandpass Filters
Fully-Reconfigurable Non-Reciprocal Bandpass Filters
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DOI：
10.1109/ims30576.2020.9224096
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发表时间：
2020-08
期刊：
影响因子：
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通讯作者：
Dakotah J. Simpson;D. Psychogiou
中科院分区：
文献类型：
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作者：
Dakotah J. Simpson;D. Psychogiou
本文报道了具有完全可重构传递函数的准椭圆非互易带通滤波器（BPF）的射频设计。其表明，通过调制其组成谐振器的谐振频率，RF信号传播仅在一个方向上被启用-例如，从端口1到端口2，而在相反的端口中它被充分抑制。此外，通过改变BPF的谐振器的谐振频率，可以在频率和带宽（BW）方面调谐正向方向上的传递函数，并且可以本质上关闭。为了实际演示的目的，集中元件的原型集中在300兆赫的设计，制造和测量。它展示了1.15：1的中心频率调谐和2.77：1的BW调谐范围，同时保持非互易行为。对于所有的调谐状态，在正向方向的最小带内插入损耗被测量为1.7和4.3 dB之间，而在反向方向的隔离度被测量为高达30.9 dB。
This paper reports on the RF design of quasi-elliptic non-reciprocal bandpass filters (BPFs) with fully-reconfigurable transfer function. It is demonstrated that by modulating the resonant frequency of its constituent resonators, the RF signal propagation is only enabled in one direction-e.g., from port 1-to-2-whereas it is sufficiently suppressed in the reverse one. Furthermore, by varying the resonant frequency of the BPF's resonators, the transfer function in the forward direction can be tuned in terms of frequency and bandwidth (BW) and can be intrinsically switched-off. For practical demonstration purposes, a lumped-element prototype centered at 300 MHz was designed manufactured and measured. It demonstrated a 1.15:1 center frequency tuning and a 2.77:1 BW tuning range while maintaining a non-reciprocal behavior. For all tuning states, the minimum inband insertion loss in the forward direction was measured between 1.7 and 4.3 dB, whereas the isolation in the reverse direction was measured up to 30.9 dB.