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Title: Merits of symmetrical and diagonally-symmetrical monopulse slot arrays
Authors: Coetzee, J.C. 
Tan, W.L.
Joubert, J.
Issue Date: 1999
Citation: Coetzee, J.C.,Tan, W.L.,Joubert, J. (1999). Merits of symmetrical and diagonally-symmetrical monopulse slot arrays. Asia-Pacific Microwave Conference Proceedings, APMC 3 : 914-916. ScholarBank@NUS Repository.
Abstract: The designer of monopulse slot arrays has to make a selection between either a symmetrical configuration where the quadrants are mirror images of each other, or a diagonally-symmetrical configuration where quadrants are mirror images of their respective diagonal counterparts. The symmetry of the former guarantees good difference mode pattern performance over an appreciable frequency range, but non-uniform inter-element spacing in the E-plane may give rise to sum pattern distortion. On the other hand, small variations in the off-centre-frequency input impedance for the sub-arrays of diagonally-symmetrical arrays may affect their difference mode performance. This paper presents a study on the advantages and disadvantages of using the two different configurations by theoretically assessing the performance of a number of representative examples.
Source Title: Asia-Pacific Microwave Conference Proceedings, APMC
Appears in Collections:Staff Publications

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