Abstract
Taylor weighting is often used in ESAs to control peak sidelobe levels below that resulting from uniform weighting. Examples of Taylor weights are given, and the effect of weighting on peak gain, maximum sidelobe level, beamwidth, and ISL performance metrics is shown. Octagonally shaped ESAs, possibly resulting from turning off corner elements of a square array, are discussed as a technique to reduce peak sidelobes. Another control technique is to rotate one of the sidelobe planes relative to the other of a square array with elements turned off to form a parallelogram. Finally, weighting schemes for phase-comparison monopulse are described, including Bayliss weights and a simpler to implement scheme referred to as split-Taylor.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Notes
- 1.
One should keep in mind that sidelobe levels and null depths in particular are quite sensitive to array imperfections, as these are where the voltages from all elements in the array add together in a very specific manner.
- 2.
Using Mathematica, that is.
- 3.
Taylor 2-D weights for the sum beam; Bayliss k x weights and Taylor k y weights for the Δx beam; and Bayliss k y weights and Taylor k x weights for the Δy beam
- 4.
Of course if one digitally samples the output of each element, then this issue is moot.
- 5.
It may be that uniform weighting is the best option for the one weight per element case in situations where sidelobe levels near the main beam are important.
References
Bayliss, E. T. (1968, May–June). Design of monopulse antenna difference patterns with low sidelobes. Bell System Technical Journal, 47(5), 623–650.
Elliott, R. S. (1975, January). Design of Line Source Antennas for narrow Beamwidth and asymmetric low Sidelobes. Institute of Electrical and Electronics Engineers, AP-23, 100–107.
Mailloux, R. J. (2005). Phased Array antenna handbook (2nd ed.). Boston: Artech House.
Taylor, T. T. (1955, January). Design of line source antenna for narrow beam width and low side lobes. IRE Transactions on Antennas and Propagation, 3, 16–28.
Van Trees, H. L. (2002). Optimum array processing. New York: Wiley Interscience.
Author information
Authors and Affiliations
Rights and permissions
Copyright information
© 2019 Springer Nature Switzerland AG
About this chapter
Cite this chapter
Dana, R.A. (2019). Sidelobe Control and Monopulse Weighting. In: Electronically Scanned Arrays (ESAs) and K-Space Gain Formulation. Springer, Cham. https://doi.org/10.1007/978-3-030-04678-1_5
Download citation
DOI: https://doi.org/10.1007/978-3-030-04678-1_5
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-04677-4
Online ISBN: 978-3-030-04678-1
eBook Packages: EngineeringEngineering (R0)