2011 4th Annual Caneus Fly by Wireless Workshop 2011
DOI: 10.1109/fbw.2011.5965558
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Optical true time-delay beam-forming for phased array antenna using a dispersion compensating fiber and a multi-wavelength laser

Abstract: We have proposed optical true-time delay beam-forming system using a DCF and a multi wavelength laser for phase array antenna. Total time delay for each wavelength band originated from group delay of a DCF and the rued delay line. As a result, a DCF for 80 kIn NZ-DSF could be used to obtain the radiation angle of 1800 by tuning the multi-wavelengths of laser in the PI'oposed optical true-time delay.

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Cited by 8 publications
(3 citation statements)
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“…The PDs have a bandwidth of 16 GHz and a responsivity of 0.7 A/W. The length difference ðÁLÞ of the tailored fiber segments is precisely measured to be 2 mm [20], [21], and 3-bit (or eight) TTDs are estimated to be Á( PTTD ¼ 0, 10, 20, 30, 40, 50, 60, and 70 ps, respectively. An RF vector network analyzer (VNA, Agilent PNA-X Network analyzer N5247A) is used to characterize the RF transfer function of the photonic beamformer, which is depicted in Fig.…”
Section: Experiments and Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…The PDs have a bandwidth of 16 GHz and a responsivity of 0.7 A/W. The length difference ðÁLÞ of the tailored fiber segments is precisely measured to be 2 mm [20], [21], and 3-bit (or eight) TTDs are estimated to be Á( PTTD ¼ 0, 10, 20, 30, 40, 50, 60, and 70 ps, respectively. An RF vector network analyzer (VNA, Agilent PNA-X Network analyzer N5247A) is used to characterize the RF transfer function of the photonic beamformer, which is depicted in Fig.…”
Section: Experiments and Resultsmentioning
confidence: 99%
“…For example, dispersive fiber technique is quite competitive in power and space consumption [7]- [9] but the bandwidth of the transmission signal is limited by the power fading of the broadband RF signal caused by the group velocity dispersion [19]. Besides, its programmable PTTD is determined by the product of optical wavelength of a tunable laser and the dispersion value [9], [20]. Consequently, the resolution and dynamic range of the PTTD are both linearly related to the dispersion value so that high resolution and large range are contradictory.…”
Section: Introductionmentioning
confidence: 99%
“…Existen diversos métodos fotónicos que pueden emplearse para hacer el procesamiento de la señal en el dominio óptico, como: conmutación de guías ópticas [11][12][13][14], líneas de retardo basadas en redes de Bragg uniformes, con chirp y superestructuradas [15][16][17][18][19][20][21][22], TTD por propagación en medios dispersivos [23][24][25][26][27], y otros [28][29][30][31][32][33][34]. A continuación, se describe un sistema que utiliza dispositivos de fibra óptica conocidos como redes de Bragg uniformes.…”
Section: Retardos Reales Por Me Dios Fotónicosunclassified