Performance Evaluation on Radiation Characteristics of Kaiser-Based Linear Antenna Array

The effect of amplitude or phase weighting of excited signal on a feeding network of antenna array will impact on the array radiation characteristics. This paper discusses performance evaluation on radiation characteristics of a Kaiser-based linear antenna array with small even variations of elements number
$(N)$
, namely
$1 \times 4,\ 1\times 6$
, and
$1 \times 8$
. The use of Kaiser function in weighting method will give significant sidelobe level (SLL) suppression and offer a flexibility by changing the value of
$\beta$
parameters. Moreover, the increase of
$N$
also affects the diminishment of width of main lobe (WML) value and provides almost constant front to back ratio (FBR) value. In
$1\times 4$
Kaiser-based linear antenna array, the radiation characteristics show the non-appearance of sidelobe, so the SLL suppression value is undetermined, whereas the WML and FBR values are 30° and 13.32 dB, respectively. The performance of a
$1 \times 6$
Kaiser-based linear antenna array has the SLL suppression from -34.35 dB up to -33.73 dB, WML of 25°, and FBR of 13.36 dB. Meanwhile, the radiation characteristics of
$1\times 8$
Kaiser-based linear antenna array provide the SLL suppression from -34.26 dB up to -33.87 dB, WML of 17°, and FBR of 13.36 dB. Furthermore, the gain achievements show the enhancement for the bigger number of
$N$
, namely 8.43 dB for
$1 \times 4$
, 9.13 dB for
$1 \times 6$
, and 11.07 dB for
$1\times 8$
.