Synthesis of Low-Sidelobe Stepped-Amplitude Aperiodic Phased Arrays

Synthesis of Low-Sidelobe Stepped-Amplitude Aperiodic Phased Arrays

Aslan, Y. (TU Delft Microwave Sensing, Signals & Systems)
Roederer, A.G. (TU Delft Microwave Sensing, Signals & Systems)
Yarovoy, Alexander (TU Delft Microwave Sensing, Signals & Systems)

2021

A novel stepped-amplitude aperiodic phased array synthesis method is proposed. The presented technique is based on iterative convex element position perturbations and uses pre-defined excitation amplitudes. A 64-element irregular array with two discrete amplitude levels (0.5 at the edge-elements and 1 at the center-elements) is synthesized for demonstration purposes. The array achieves a side lobe level lower than - 30 dB and a directivity higher than 20 dBi within the given field-of-view (±60 degrees in azimuth and ±15 degrees in elevation). Through comparative studies of the array directivity, effective isotropic radiated power and maximal side lobe level with the ones of the uniformly-fed/amplitude-tapered periodic arrays and a uniformly-fed aperiodic array, it is shown that the proposed stepped-amplitude array provides the best complexity/performance trade-off.

array synthesis
phased arrays
aperiodic arrays
stepped amplitude arrays

http://resolver.tudelft.nl/uuid:236dca2d-7e6b-4b05-a128-1d0dd697cd4f

https://doi.org/10.23919/EuCAP51087.2021.9411337

IEEE

2021-10-27

978-1-7281-8845-4

2021 15th European Conference on Antennas and Propagation (EuCAP)

EuCAP 2021, 2021-03-22 → 2021-03-26, Virtual Conference at Dusseldorf, Germany

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Institutional Repository

conference paper

© 2021 Y. Aslan, A.G. Roederer, Alexander Yarovoy