Low-cost monopulse antenna using bi-directionally-fed microstrip patch array |
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Authors: | Sang-Gyu Kim Kai Chang |
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Affiliation: | Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA; |
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Abstract: | A new technique for realising a simple low-cost monopulse antenna using a symmetrical bi-directionally-fed microstrip patch array is described. The antenna is designed and demonstrated at Ka-band. Two squinted beams are radiated from a bi-directionally fed microstrip patch array, and a sum/difference pattern is synthesised using the in-phase and out-of-phase signals achieved using a hybrid ring coupler. The measured return loss is better than 10 dB at the sum and difference port, and the depth at broadside is more than 30 dB. |
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