Thinning and broadbanding antenna arrays by unequal spacings
- 1 January 1965
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Antennas and Propagation
- Vol. 13 (1), 34-42
- https://doi.org/10.1109/tap.1965.1138378
Abstract
This paper presents a theory for, and a method of designing a thinned or broad-band antenna array by means of unequal spacings. Using the theory of unequally spaced arrays developed by one of the authors, an antenna array can be designed to produce a desired beamwidth and sidelobe level with the average spacing many wavelengths apart. The patterns are expressed in a series of the Anger functions and its sidelobe level is shown to decrease approximately asN^{-0.5}\simN^{-0.4}whereNis the total number of elements, and the gain is approximately equal toN. It is also shown that the sidelobe level can be improved by varying the amplitude distribution. Numerical examples are given to illustrate the method.Keywords
This publication has 15 references indexed in Scilit:
- Random removal of radiators from large linear arraysIEEE Transactions on Antennas and Propagation, 1963
- ON LARGE NONUNIFORMLY SPACED ARRAYSCanadian Journal of Physics, 1963
- High resolution antenna arrays with randomly spaced elementsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1963
- Thinned, unequally spaced arrays designed by dynamic programmingPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1963
- A probabilistic approach to the design of large antenna arraysIEEE Transactions on Antennas and Propagation, 1963
- Nonuniform arrays with spacings larger than one wavelengthIEEE Transactions on Antennas and Propagation, 1962
- Linear arrays with variable interelement spacingsIEEE Transactions on Antennas and Propagation, 1962
- Sidelobe reduction by nonuniform element spacingIEEE Transactions on Antennas and Propagation, 1961
- Some equivalences between equally and unequally spaced arraysIEEE Transactions on Antennas and Propagation, 1960
- Unequally-spaced, broad-band antenna arraysIEEE Transactions on Antennas and Propagation, 1960