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In this letter, a broadband and compact phase shifter using omega particles is designed. Bandwidth of the 90°and 45°versions of the designed phase shifter are around 55% with the accuracy of 3°and 60% with the accuracy of 2.5°, respectively. The proposed phase shifter has compact size compared with previously published SIW based phase shifter designs. A prototype of the proposed 90°phase shifter is fabricated and comparison of the measured and simulated results is provided.
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Ebrahimpouri et al. (2014) studied this question.
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