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arXiv · 1801.03814

A Radio Frequency Non-reciprocal Network Based on Switched Low-loss Acoustic Delay Lines

Ruochen Lu·Tomas Manzaneque·Yansong Yang·Anming Gao·Liuqing Gao·Songbin Gong
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Abstract

This work demonstrates the first non-reciprocal network based on switched low-loss acoustic delay lines. A 21 dB non-reciprocal contrast between insertion loss (IL=6.7 dB) and isolation (28.3 dB) has been achieved over a fractional bandwidth of 8.8% at a center frequency 155MHz, using a record low switching frequency of 877.22 kHz. The 4-port circulator is built upon a newly reported framework by the authors, but using two in-house fabricated low-loss, wide-band lithium niobate (LiNbO3) delay lines with single-phase unidirectional transducers (SPUDT) and commercial available switches. Such a system can potentially lead to future wide-band, low-loss chip-scale nonreciprocal RF systems with unprecedented programmability.

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Ruochen Lu, Tomas Manzaneque, Yansong Yang, Anming Gao, Liuqing Gao, Songbin Gong. 2018-01-09. A Radio Frequency Non-reciprocal Network Based on Switched Low-loss Acoustic Delay Lines. https://doi.org/10.1109/ultsym.2018.8579758

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