1 August 2005 True-time-delay modules based on a single tunable laser in conjunction with a waveguide hologram for phased array antenna application
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Abstract
A wavelength-controlled continuous beam-steering four-element X-band (8- to 12-GHz) phased array antenna system is presented. The system is based on the continuously tunable optical true-time-delay technique. Dispersion-enhanced waveguide holograms were proposed and used to fabricate the optical true-time-delay devices. The devices are characterized both theoretically and experimentally. The wavelength of a laser was tuned within the system to get continuously tunable true time delay. The time delay was measured for a wavelength tuning range from 1537 to 1547 nm in 10-nm steps. The far-field radiation patterns of the antenna system were measured at 9 and 10.3 GHz, and they showed no beam squint. The true-time-delay formation idea presented here is suitable for not only X-band, but also for higher microwave frequencies, such as K-band.
© (2005) Society of Photo-Optical Instrumentation Engineers (SPIE)
Zhong Shi, Zhong Shi, Lanlan Gu, Lanlan Gu, Brie Howley, Brie Howley, Yongqiang Jiang, Yongqiang Jiang, Qingjun Zhou, Qingjun Zhou, Ray T. Chen, Ray T. Chen, Maggie Yihong Chen, Maggie Yihong Chen, Xiao-dong Wang, Xiao-dong Wang, Harold R. Fetterman, Harold R. Fetterman, George A. Brost, George A. Brost, } "True-time-delay modules based on a single tunable laser in conjunction with a waveguide hologram for phased array antenna application," Optical Engineering 44(8), 084301 (1 August 2005). https://doi.org/10.1117/1.2009766 . Submission:
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