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- Kurup, Dhanesh G., et al.
(author)
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Synthesis of uniform amplitude unequally spaced antenna arrays using differential evolution algorithm
- 2003
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In: IEEE Transactions on Antennas and Propagation. - 0018-926X .- 1558-2221. ; 51:9, s. 2210-2217
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Journal article (peer-reviewed)abstract
- A computationally efficient global optimizationmethod, the differential evolution algorithm (DEA), is proposedfor the synthesis of uniform amplitude arrays of two classes,i.e., unequally spaced arrays with equal phases and unequalphases. Phase-only synthesis and the synthesis of uniformly exitedunequally spaced arrays (position only synthesis) are comparedand it is seen that, by using the unequal spacing, the number ofarray elements can be significantly reduced for attaining reducedsidelobe levels. From the DEA-based synthesis of unequallyspaced arrays with uniform amplitudes and unequal phases, itis found that a tradeoff exists between the size of the unequallyspaced arrays and the range of phases for the same radiationcharacteristics. The proposed synthesis technique using uniformamplitudes, unequal spacing, and unequal phases (position-phasesynthesis) not only decreases the size of the array for the samesidelobe level compared to both the phase-only synthesis andposition-only synthesis but also retains their advantages.
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- Kurup, DG, et al.
(author)
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Transmission line model for field distribution in microstrip line fed H-slots
- 2001
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In: ELECTRONICS LETTERS. - : IEE-INST ELEC ENG. - 0013-5194. ; 37:14, s. 873-874
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Journal article (peer-reviewed)abstract
- A method for finding the electric field distribution of microstrip line fed H-slots is described. A transverse resonance technique is first applied to find a second-order approximation of the slot propagation constant, which is then used in the transmissi
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