Frequency-scanned gratings consisting of photo-etched arrays
- 1 January 1989
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Antennas and Propagation
- Vol. 37 (8) , 996-1002
- https://doi.org/10.1109/8.34136
Abstract
Frequency-scanned gratings consisting of periodic arrays of thin conducting elements are investigated. The principle used is to let the first higher-order diffracted wave propagate and serve as the frequency-scanned beam. The grating structures are designed for optimum blazing to the desired diffracted wave (i.e., for optimal power conversion from the incident wave to the diffracted wave) by the use of an iterative optimization process. Both reflection and transmission gratings are considered; the elements investigated are single dipoles and crossed dipoles. The theoretical analysis is based on Floquet's theorem and the method of moments. Several numerical examples are presented showing that this type of grating structure has a high blazing efficiency and is suitable for frequency scanning. The theoretical results are verified by comparison with experimental results.Keywords
This publication has 14 references indexed in Scilit:
- Convergence phenomenon in the solution of dichroic scattering problems by Galerkin's methodIEE Proceedings H Microwaves, Antennas and Propagation, 1987
- Analysis and design of double-layer frequency-selective surfacesIEE Proceedings H Microwaves, Antennas and Propagation, 1985
- Plane-wave illumination of concentric-ring frequency-selective surfacesIEE Proceedings H Microwaves, Antennas and Propagation, 1985
- Perfectly blazed triangular groove reflection gratingsJournal of the Optical Society of America A, 1984
- Analysis and design of frequency scanned transmission gratingsRadio Science, 1983
- An unusual reflection grating behaviour suitable for efficient frequency scanning,Published by Institute of Electrical and Electronics Engineers (IEEE) ,1980
- Design of a dichroic Cassegrain subreflectorIEEE Transactions on Antennas and Propagation, 1979
- A Low-Loss Diffraction Grating Frequency MultiplexerIEEE Transactions on Microwave Theory and Techniques, 1978
- Bragg-angle blazing of diffraction gratings*Journal of the Optical Society of America, 1975
- A streamlined metallic radomeIEEE Transactions on Antennas and Propagation, 1974