Characterization of Power Weighted Linear Antenna Array Using Kaiser Function in Comparison with Uniform Distribution

Mistialustina, Hartuti; Chairunnisa,; Munir, Achmad

doi:10.1109/ict49546.2020.9239423

Cited by 1 publication

(3 citation statements)

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“…Studies [3][4][5] focused on the beamforming technique without considering lowering the sidelobe, and, in most cases, demonstrated high SLL. Additionally, [6][7][8][9] designed and manufactured a Tx device using a technique to lower the SLL, but different elements may be required to achieve a minimum SLL for other beam directions. The proposed sidelobe suppression beamforming system is suitable for safe wireless power transmission with high received power and low SLL.…”

Section: Simulationmentioning

confidence: 99%

“…In this method, phase values for an array antenna that can transmit power optimally in the direction of the designated Rx antenna are stored in an LUT, with the beamforming directed toward the located Rx antenna. Although [3][4][5] achieved high efficiency under ideal conditions, they did not consider lowering the SLL; hence, MPT studies aiming to reduce SLL are underway [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…In their simulation, the researchers suppressed the SLL to -17.7 dB by applying a Gaussian function to the amplitude distribution of a 1 × 14 Tx array antenna at 5.8 GHz. In [7], the results for uniform amplitude distribution were compared to those for applying the Kaiser function to the amplitude distribution of an array antenna. The researchers verified through simulation that their technique reduced the SLL to -12.8 dB at 9.5 GHz.…”

Section: Introductionmentioning

confidence: 99%

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Sidelobe Suppression Beamforming Using Tapered Amplitude Distribution for a Microwave Power Transfer System with a Planar Array Antenna

Park

Seo

2022

J Electromagn Eng Sci

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This paper proposes a sidelobe suppression beamforming scheme using tapered amplitude distribution for microwave power transfer (MPT) with a two-dimensional planar array antenna (PAA). To overcome the undesirable effects of sidelobes, the magnitude of the sidelobes can be lowered by manipulating the amplitude distribution of the PAA. By analyzing the array factor of the PAA, we expressed the amplitude distribution as the product of two one-dimensional vectors. Moreover, we developed a method for obtaining these vectors from an expected sidelobe level (SLL). We used the Chebyshev taper, which has a higher directivity than other distributions given an expected SLL, for the amplitude distribution. To verify the proposed method, we designed and implemented a digital beamforming system with a 4 × 4 transmitter (Tx) array and a receiver (Rx) at 5.8 GHz. Compared with a uniform amplitude distribution, the proposed method reduced the SLL by 7.5 dB but the received RF power by only 0.6 dB. We compared the performance of the proposed MPT system with the results of previous studies.

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