Compound Metaloop Antenna for Circularly Polarized Beam Steering
نویسندگان
چکیده
A metaloop antenna (1FD-MetaLPA), made of C-type metaatoms and having a single feed point, F L ', is created to radiate left-hand circularly polarized (LHCP) axial beam at frequency f xmlns:xlink="http://www.w3.org/1999/xlink">LH-1FD = 2.55 GHz right-hand (RHCP) xmlns:xlink="http://www.w3.org/1999/xlink">RH-1FD 3.45 GHz. It revealed that the maximum gains are unbalanced. Subsequently, number replaced by N-type metaatoms. The replacement generates balanced gain 7.1 dBi with an LHCP bandwidth 7.7% RHCP 8.3%. radiation efficiency under 75% 29% . Next, large radiates conical has xmlns:xlink="http://www.w3.org/1999/xlink">O , concentrically added outside gain-balanced 1FD-MetaLPA. This system designated as MetaLPA-plus. found MetaLPA-plus tilted angle depression (tilt angle) using equal amplitude excitation θ xmlns:xlink="http://www.w3.org/1999/xlink">max 20 ° 15 These CP beams rotated around axis change in phases points ' During beam-steering, for wave nearly constant, value between 5 6.5 dBi. also holds true wave.
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ژورنال
عنوان ژورنال: IEEE Access
سال: 2021
ISSN: ['2169-3536']
DOI: https://doi.org/10.1109/access.2021.3084285