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| A Reducing Relative Bandwidth Method Based on Digital up Converter |
| Ye Tian, Yuan Tian |
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Abstract Apparently the comprehensive performance of array becomes impaired
with the increasing of the relative bandwidth. In this paper, an
algorithm based on Digital Up Converter (DUC) is proposed to reduce
the relative bandwidth of the input broadband signal. The method
works by changing the inter-element spacing and sampling rate to
carry the frequency spectrum of the input signal of array to higher
frequency. When the carrier frequency is high enough, the broadband
array signal processing will become a narrowband array signal
processing, the narrowband array method can be used directly, and
the computation could be reduced greatly. Simulation results and
analysis confirm that the effect of reducing the relative bandwidth
of the broadband signal is obvious and the proposed method is
competent with any beamforming algorithm to form broadband patterns.
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| DOI:10.12733/jics20106152 |
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