Patent ID: 9136580
Filing Date: 2015-09-15
Classification: H01L,H01P,H03F,H03H,H04B

Abstract:
1. A quadrature hybrid coupler comprising: an induction device that includes a first terminal, a second terminal, a third terminal and a fourth terminal; a first microstrip transmission line, a second microstrip transmission line and a third microstrip transmission line that are connected to the first, second and third terminals; a first coupling capacitor and a second coupling capacitor that are respectively arranged between the first terminal and the second terminal and between the third terminal and the fourth terminal; a first shunt capacitor, a second shunt capacitor, a third shunt capacitor and a fourth shunt capacitor that are inserted between the first, second, third and fourth terminals and a ground of the first, second and third microstrip transmission lines; and a termination resistance that is inserted between the fourth terminal and the ground of the first, second and third microstrip transmission lines, wherein each of the first, second, third and fourth shunt capacitors includes N wiring layers including, where N is an integer of 2 or greater, each of the first, second third and fourth zigzag wirings has a zigzag pattern in which a wiring along a first direction and a wiring along a second wiring crossing the first direction are coupled to each other and the wiring along the first direction and the wiring along the second direction are alternately repeated.