کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1541485 996684 2008 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optical phase-based beamformer using MZM SSB modulation combined with crystal polarization optics and a spatial light modulator
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Optical phase-based beamformer using MZM SSB modulation combined with crystal polarization optics and a spatial light modulator
چکیده انگلیسی

The performance of a widely tunable phase-based beamformer for phased array antennas using a new technique to cross-polarized the carrier and the sideband, in order to allow the phase control by means of a spatial light modulator, is experimentally demonstrated. The technique relies on the combination of single sideband amplitude modulation (SSB) using a Mach–Zehnder modulator (MZM) and birefringence (to cross-polarized the carrier and the sideband). The architecture has the potential of controlling multiple independent beams simultaneously. The beamformer feeds an eight elements array showing an insertion loss and a reset speed of around 12 dB and 70 ms, respectively. Far-field antenna patterns between 7.5 GHz and 8.5 GHz for nine elevation angles within a range of ±20° have been measured showing beam steering capability, amplitude distribution weighting as well as multibeam operation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 281, Issue 2, 15 January 2008, Pages 217–224
نویسندگان
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