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This two- way peak sidelobe level is 8.3 dB less than the sum (in dB) of the peaks sidelobe levels of the transmit and receive array factors and 6.5 dB less than that obtained by optimizing only the receive pattern. Fig. 9. Thinned receive array optimized for a minimum maximum 2-way sidelobe level. VI. An antenna array produces main beam, nulls and side lobes. Side lobes consume power and causes interference in communication towards the undesired directions and therefore side lobe levels must be lowest in a practical antenna array. Phased array antenna is very useful for Radar and satellite and vehicular applications.
The radiation pattern of conventional microstrip antenna array is shown in fig 4(a). it gives the maximum gain of 10.1673 dB in broadside direction and side lobe level of -12.7 dB . The modified array gives a side lobe level of -15.4 dB with maximum gain of 10.57522 dB in broadside direction as shown in fig. 4(b).
A method for reducing the sidelobe level in such an ar Reduction of sidelobe levels in interrupted phased array antennas by means of a genetic algorithm – Tonn – 2007 – International Journal of RF and Microwave Computer-Aided Engineering – Wiley Online Library
Sidelobe Level Reduction In Microstrip Patch antenna array N.Bayat#1,H.R.Hassani#2,S.Mohammad ali nezhad#3 #Electrical & Electronic Engineering Department,Shahed university, Persian Gulf Highway,Tehran,Iran NBayat2002@gmail.com hassani@shahed.ac.ir alinezhad@shahed.ac.ir Abstract— The reduction in side lobe level (SLL) of a microstrip