Robust beamforming synthesis technique for low side lobe level using taylor excited antenna array

Sarker, Arifur R.; Hossain, Md. Saddam; Masud, Mahedi

doi:10.1109/icecte.2016.7879566

Cited by 19 publications

(11 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To validate (15), several comparisons were carried out between the radiation pattern E ϕ (θ ) of the array derived directly by the CST and E ϕ (θ ) derived by (15). All the comparisons exhibited absolute similarity.…”

Section: N)mentioning

confidence: 99%

An Effective Modification of Conventional Beamforming Methods Suitable for Realistic Linear Antenna Arrays

Zaharis

Gravas

Lazaridis

et al. 2020

IEEE Trans. Antennas Propagat.

View full text Add to dashboard Cite

Antenna array beamforming (BF) refers to a real-time procedure that aims at calculating the proper feeding weights applied to the array elements in order to create a main lobe and a number of nulls toward respective preassigned directions. Most of the research performed on BF has been based on a simplified mathematical model, which ignores the nonisotropic radiation pattern of the array elements and the element mutual coupling. This article introduces an innovative way to incorporate the actual radiation pattern of the array elements and the element coupling into two popular deterministic BF methods, thus making these methods applicable to realistic antenna arrays. These two modified methods are applied in several scenarios, where a desired signal and several interference signals with various directions of arrival are received by a realistic microstrip linear antenna array. The statistical analysis performed in every scenario demonstrates the validity and effectiveness of the proposed modification. Index Terms-Antenna array beamforming (BF), direction of arrival (DoA), microstrip arrays, minimum variance distortionless response (MVDR), mutual coupling, null steering beamforming (NSB). I. INTRODUCTION A NTENNA array beamforming (BF) is related to a particular problem that has to be solved in real time. It concerns the calculation of feeding weights applied by a proper feeding network to the elements of the antenna array in order to make the array create a main lobe and a number of radiation nulls toward respective preassigned directions [1]-[19]. In fact, the main lobe direction must coincide with the direction of Manuscript

show abstract

Section: N)mentioning

confidence: 99%

An Effective Modification of Conventional Beamforming Methods Suitable for Realistic Linear Antenna Arrays

Zaharis

Gravas

Lazaridis

et al. 2020

IEEE Trans. Antennas Propagat.

View full text Add to dashboard Cite

show abstract

“…In [44], a low side lobe level time-domain adaptive beamforming technique has been proposed using convex optimization. A diagonal loading technique is introduced in [45] to keep the SLL at a desired value using Taylor excited antennas. Concentric ring isophoric sparse arrays are proposed in [46] to achieve optimal pattern shaping.…”

Section: Prior Artmentioning

confidence: 99%

Adaptive Beamforming With Sidelobe Suppression by Placing Extra Radiation Pattern Nulls

Gravas

Zaharis

Yioultsis

et al. 2019

IEEE Trans. Antennas Propagat.

View full text Add to dashboard Cite

A new iterative adaptive beamforming (ABF) algorithm based on conventional beamformers is proposed, in order not only to steer the main lobe towards a desired signal and place radiation pattern nulls towards respective interference signals, but also to achieve a desired side lobe level (SLL). Thus, the algorithm becomes less susceptible to unpredicted interference signals than conventional beamformers. In each iteration, the algorithm finds the direction of the peak of the greatest side lobe, which is considered as direction of arrival (DoA) of a hypothetical interference signal, and the conventional beamformer is then employed to find proper antenna array weights that produce an extra null towards this direction. The iterative procedure stops when the desired SLL is obtained. The algorithm is applied on three conventional beamformers and is tested for various signal DoA, while the direction deviation of the main lobe and the nulls is recorded, to evaluate the algorithm in terms of robustness. The proposed algorithm needs a few iterations to achieve the desired SLL, and thus is much faster than any evolutionary iterative method employed for side lobe suppression. Finally, unlike methods that employ neural networks, the proposed algorithm does not need any training to become functional.

show abstract

“…e technique of amplitude-only control is a simple method as it changes only the current amplitude excited at each element [4,5]. In [6], the sidelobe level is kept at the desired value by using Taylor excited antennas. It is found that some radiated power is wasted in the quantization attenuators, resulting in poor power efficiency.…”

Section: Introductionmentioning

confidence: 99%

Millimetre-Wave Planar Phased Patch Array with Sidelobe Suppression for High Data-Rate Transmission

Chen

Chiu

Hsu

2019

International Journal of Antennas and Propagation

View full text Add to dashboard Cite

A design of 38 GHz planar phased patch array with sidelobe suppression for data-rate enhancement is proposed in the paper. The proposed array is formed of three 24-element subarrays of patches. Each patch has its own transmit/receive modules (TRM) consisting of a digitally controlled attenuator and phase shifter. In order to achieve high data-rate communications, the noise, especially due to the undesired signals received from the sidelobes, should be reduced with high sidelobe suppression of subarray. The sidelobe suppression of the proposed subarray is first improved to 17.92 dB with a diamond-shaped aperture and then better than 35 dB with a tapered radiation power distribution. The excellent sidelobe suppression of the antenna array is essential for the beam-division multiplexing applications when the signal sources are close to each other. The proposed design is validated experimentally, including the data-rate measurements showing that the 7 Gbps data transmission can be achieved with sufficient sidelobe suppression of the proposed design.

show abstract

Robust beamforming synthesis technique for low side lobe level using taylor excited antenna array

Cited by 19 publications

References 11 publications

An Effective Modification of Conventional Beamforming Methods Suitable for Realistic Linear Antenna Arrays

An Effective Modification of Conventional Beamforming Methods Suitable for Realistic Linear Antenna Arrays

Adaptive Beamforming With Sidelobe Suppression by Placing Extra Radiation Pattern Nulls

Millimetre-Wave Planar Phased Patch Array with Sidelobe Suppression for High Data-Rate Transmission

Contact Info

Product

Resources

About