Trapezoidal pulse-switching strategy for failure correction of multi-pattern time-modulated linear array
| Autor: | Ananya Mukherjee, Sujoy Mandal, Sujit K. Mandal, Rowdra Ghatak |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | International Journal of Microwave and Wireless Technologies. :1-17 |
| ISSN: | 1759-0795 1759-0787 |
| Popis: | In this paper, a novel approach for simultaneously correcting multiple degraded patterns under the failure condition of time-modulated linear arrays is proposed. The approach is based on the use of trapezoidal pulse with non-zero rise/fall time to control the switching status of the radio frequency switches that enables ON-OFF keying modulation of the array elements. After deriving a closed form expression of harmonic power loss and through the in-depth analysis, it is explored that the proposed trapezoidal pulse, because of having non-zero rise/fall time, provides less undesired harmonic power loss as compared to the conventionally used rectangular pulse with ideally zero rise/fall time. With the aim of reconstructing the degraded patterns with improved directivity and suppressed higher sideband power, three pulse-switching strategies based on rectangular and trapezoidal pulse have been employed, and their comparative performances prove the superiority of the proposed approach. |
| Databáze: | OpenAIRE |
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