Mustafa Kabel Author

Research Article Open Access

Compact Quadrature Hybrid Coupler For MRI Coil

Author(s):

Mustafa Kabel

This paper proposes the design of a compact quadrature hybrid coupler at the 300 MHz operating frequency for the Magnetic resonance imaging Birdcage coil. The desired 300 MHz operation frequency of the quadrature hybrid coupler has a wavelength of 1 meter, and then the physical size of the designed quadrature hybrid coupler will be very large. Therefore, we propose the design of a compact quadrature hybrid coupler, applying symmetrical bends in the design and reducing its physical size, maintaining the design performance in the frequency of operation, the magnitude balance below ± 0.4 dB and the phase balance below ± 0.3° by applying a specific substrate with losses. The type of the compact quadrature hybrid coupler is Branch-line hybrid and it was manufactured in micr... view more»

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