side lobe


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side lobe

See antenna.

side lobe

[′sīd ‚lōb]
(electromagnetism)
References in periodicals archive ?
The achieved -3 dB focus width at the focal plane is W = 14.7 cm, the depth of focus is DoF = 71 cm, the side lobe level at the focal plane is less than -15 dB, and the focal shift is 22.5 cm.
The GO solution, which is quite inaccurate, basically mimics the pattern of the array without any radome, whereas the PO solution, even if with appreciable difference with respect to the full wave CST solution, is much closer to this latter, both for what concerns the main lobe shape and the side lobe level.
The Dolph-Chebyshev distribution with a side lobe level of -20 dB has been chosen for this study.
With this global search we locate maximum side lobe level.
This ultimately allows for improved side lobe suppression with less interference, greatly enhancing capacity as well as coverage.
Communications engineers usually consider these side lobes wasted energy.
When compared to the classical omnidirectional ADE configuration, the aperture uniform illumination rises the side lobes close to the main beam, and, due to the increase of the density of rays toward the main reflector edge (see Figure 5), it increases the main reflector spillover and rises the side lobe level behind the main reflector, particularly at 140[degrees] < [theta] < 180[degrees] (see Figure 7).
as the 'roughness' of the fractal surface increases, the emerging slope between the main lobe of function [absolute value of y(k)] and the side lobes in the 'spectral domain' also increases.
SLR (side lobe ratio) MLA (main lobe area) Equal distance 0.2781 0.0635 Optimization array 0.6824 0.0310 Table 2: Result of optimization microphones array coordinate.
The BP method with a proper [lambda] has a higher resolution and the side lobe can reduce about 6 dB than FFT.
Main objective is, in fact, determination of array components in order to obtain minimum rate of first side lobe surface to that of main lobe in array pattern.