A superelliptical quadrature hybrid directional coupler at 5.8 GHz is designed and tested. The substrate is FR408 with a thickness of 1.57 mm. The size of the coupler is 15.932 mm x 12.038 mm (0.54 λ x 0.41 λ). At the design frequency, the return loss and the isolation are 17.1 dB and 20.7 dB, respectively, while the amplitude and phase imbalances are 0.1 dB and 4.2◦, respectively. Index Terms – quadrature hybrid directional coupler, superellipse.
A quadrature hybrid directional coupler with superelliptical shape for 5.8 GHz applications / Giacomo Giannetti; Stefano Maddio; Stefano Selleri. - ELETTRONICO. - (2024), pp. 1-4. (Intervento presentato al convegno XXV Riunione Nazionale di Elettromagnetismo).
A quadrature hybrid directional coupler with superelliptical shape for 5.8 GHz applications
Giacomo Giannetti
;Stefano Maddio;Stefano Selleri
2024
Abstract
A superelliptical quadrature hybrid directional coupler at 5.8 GHz is designed and tested. The substrate is FR408 with a thickness of 1.57 mm. The size of the coupler is 15.932 mm x 12.038 mm (0.54 λ x 0.41 λ). At the design frequency, the return loss and the isolation are 17.1 dB and 20.7 dB, respectively, while the amplitude and phase imbalances are 0.1 dB and 4.2◦, respectively. Index Terms – quadrature hybrid directional coupler, superellipse.
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