HPBW


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HPBW

(electromagnetism)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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The DOAs to estimate are [v.sub.1] = -30[degrees] and [v.sub.2] = -15[degrees] in Figures 7(a)(b) and so the angular distance between the two considered DOAs is such to be bigger of HPBW parameter.
For a mobile communication base station, the HPBWs in the horizontal plane for both VP and HP elements need to be similar.
[A.sub.i] 0.533 0.8171 1 0.8349 0.6926 [B.sub.i] 14.9867 4.2445 4.4788 6.6242 3.6329 Table 2: HPBW of the two ports (+45 and -45) according to the frequency at different tilts.
Figure 4 illustrates the relationship between the HPBW and the cone height.
3) The system level integration of the antenna array within the structure of the UAV and the combiner within a controlled beam steering environment and the characterization of the behavior of this beam-steering capability on the UAV for communication link enhancement via the study of the steering angles on the HPBW and gain in the space of coverage.
The antenna diameters are in the order of 30-60 cm with very narrow beams, down to less than 1[degrees] half power beamwidth (HPBW) [3].
Gain, directivity, and half-power beam-width (HPBW) are presented in Figs.
The half-power beamwidths (HPBW) in xy-plane for excitation of Probe1 and Probe2 are 60 degrees and 80 degrees, respectively.
For the EBG-covered antenna, the measured Half-Power Beamwidth (HPBW) is 12[degrees] in the E-plane and 14[degrees] in the H-plane; the Side-Lobe Level (SLL) is -9.84 dB in the E-plane and -13.15 dB in the H-plane.
In order to compare with existing research works, the peak sidelobe level (PSLL), 3dB beamwidth (HPBW) and fill factor [r.sub.i] are considered as optimization object.
At 2.5 GHz, the measured half-power beamwidth (HPBW) in the yz- and xz-planes is 73 and 62 degrees.