Patent ID: 9214715
Filing Date: 2015-12-15
Classification: H01P

Abstract:
1. A hybrid coupler device comprising: a first transmission line structure including a first transmission line disposed in parallel with N third transmission lines, wherein N is an integer value greater than or equal to one, the first transmission line and the N third transmission lines being interconnected between a first port and a second port, the first transmission line and the N third transmission lines being characterized by an unwound-rewound transmission line geometry; and a second transmission line structure including a second transmission line disposed in parallel with N fourth transmission lines, the second transmission line and the N fourth transmission lines being interconnected between a third port and a fourth port, the second transmission line and the N fourth transmission lines being characterized by the unwound-rewound transmission line geometry, the first transmission line structure being interdigitally coupled with the second transmission line structure in accordance with a predetermined coupling value, each transmission line in the second transmission line structure being disposed adjacent to a corresponding transmission line in the first transmission line structure, each transmission line in the second transmission line structure being coupled to a corresponding adjacent transmission line in the first transmission line structure by a mutual capacitance value of a plurality of mutual capacitance values, the predetermined coupling value being based on an average of the plurality of mutual capacitance values.