Reconfigurable RF-Waveform Generation Based on Incoherent-Filter Design
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Other documents of the author: Andrés, Pedro; Lancis, Jesús; Torres Company, Víctor; Chen, Lawrence R.
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Show full item recordcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/2507
comunitat-uji-handle3:10234/6973
comunitat-uji-handle4:
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Title
Reconfigurable RF-Waveform Generation Based on Incoherent-Filter DesignDate
2008Publisher
Institute of Electrical and Electronics EngineersISSN
07338724Type
info:eu-repo/semantics/articleVersion
info:eu-repo/semantics/acceptedVersionSubject
Abstract
Radio-frequency (RF) waveform generators are key
devices for a variety of applications, including radar, ultra-wideband
communications, and electronic test measurements. Following
advances in broadband coherent ... [+]
Radio-frequency (RF) waveform generators are key
devices for a variety of applications, including radar, ultra-wideband
communications, and electronic test measurements. Following
advances in broadband coherent pulsed sources and
pulse-shaping technologies, reconfigurable RF waveform generators
operating at bandwidths 1 GHz have become a reality. In
this work, we demonstrate reconfigurable RF waveform generation
using broadband spectrally incoherent optical sources. This
is achieved in two steps. First, we implement an RF incoherent
filter. The energy spectrum of the optical source is conveniently
apodized using a commercially available computer-controlled
D-WDM channel selector with 100-GHz resolution. The channel
controller provides high flexibility for shaping the optical source
energy spectrum and, hence, high reconfigurability capabilities in
terms of the RF filter. Second, we show that by applying a short
baseband electrical waveform to the input of the RF filter, the
output RF spectrum of the electrical signal is a mapped version of
the designed RF filter transfer function. Specifically, we illustrate
the capabilities of our technique by generating RF signals with
10 GHz bandwidth and tunable repetition rate. Finally, we
discuss how this method can be scaled up to the millimeter-wave
range with current technology [-]
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