In this paper, miniaturized microstrip crossover circuits are proposed using slots shapes obtained using the superformula. The design starts by using a conventional half-wavelength square patch crossover. For miniaturization purposes, different superformula slot shapes are introduced on the square patch. The proposed crossovers are designed to operate at 2.4 GHz using a 0.8 mm thick FR-4 substrate with a relative permittivity of 4.4. The designs are simulated using the high frequency structure simulator (HFSS). One of the miniaturized designs is fabricated and its scattering parameters are measured using a vector network analyzer. Simulated and measured results agree very well. At the design frequency, the measured input port matching is better than Λ19 dB, while π 12, π 13 and π 14 have the values of Λ12 dB, Λ2.2 dB and Λ10 dB, respectively. Furthermore, a 71% size reduction is achieved as compared to the conventional crossover area.
Collaboration network of the authors
5 authors Β·
5 co-authorship links
Β· 3 across different organisations
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Jordan University of Science and Technology
Yarmouk University
German Jordanian University
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