Analytical Approach to Parameter Determination in Kaiser Function forPower-weighted Antenna Array Design

Analytical Approach to Parameter Determination in Kaiser Function forPower-weighted Antenna Array Design

antenna array; Kaiser function;power weighting;radiation pattern;sidelobe level (SLL);width of main lobe (WML).

Window methods that are frequently used in the designoffinite impulse response filters are also applicable to antenna array designs. This paper explores the application ofaKaiser function in a power-weighted antenna array design,focusingon the determination of theKaiserfunction’sβ parameter. The determination,whichincludes the calculation, optimization, and validation oftheβ parameter, was carried out based onaspecific configuration ofalinear antenna array design. The observation of this explorationemphasizedthe suppression of the sidelobe level (SLL) and the width of main lobe (WML) performance. By changingtheβ parameter, the Kaiser function is capable of approximating different window methods, since it plays an important role in defining theset of weighting coefficients for a specifically targeted SLL. Kaiser function application in power-weighted antenna array designs withalinear arrangement indicates the need of β parameter optimization because of thedisagreement between the obtained SLL and the targeted SLL. The optimized β parameter produceda smallerSLL error for even and odd numbers of elements. From the validation, the average SLL errorpercentagefor a targeted SLL of 25 dB, 35 dB, and 45 dB was 6%, 4.31%, 6.10%, respectively

Hartuti Mistialustina1,2, Chairunnisa1& Achmad Munir1*

https://journals.itb.ac.id/index.php/jictra/article/view/19301/6216

adio Telecommunication and Microwave Laboratory, School of Electrical Engineering and Informatics, Institut Teknologi Bandung

2023

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