Continuously tunable photonic radio-frequency notch filter |
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Authors: | F. Coppinger S. Yegnanarayanan P.D. Trinh B. Jalali |
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Affiliation: | Optoelectron. Circuits & Syst. Lab., California Univ., Los Angeles, CA, USA; |
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Abstract: | We present a continuously tunable nonrecursive radio-frequency (RF) photonic filter. The filter provides fine tuning through the use of a novel RF phase shifter and coarse tuning using an an optical variable time delay. This architecture permits wide-band continuous tuning of the filter null frequency and is useful in applications such as moving target indication (MTI) in an airborne radar. |
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