Deep null fixing on optimal compromise among sum and difference patterns of thinned arrays through

Antenna array factor The expression of a general array factor \(F\left(\theta ,\upphi \right)\) considering \(2N\) identical oriented radiating elements is1 $$F\left(\theta ,\varphi \right)=\sum_{n=1}^{2N}{I}_{n}{e}^{jk\left({x}_{n}\mathit{sin}\theta \, \mathit{cos}\varphi +{y}_{n}\mathit{sin}\theta \, \mathit{cos}\varphi +{z}_{n} \, \mathit{cos}\theta \right)}$$ (1) where \(k\) is the wavenumber; \({I}_{n}\) the complex relative excitation of the \(n\)-th element; \(({x}_{n},{y}_{n},{z}_{n})\) the position of the feed point; while […]

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