Quadrature hybrid coupler, amplifier, and wireless communication device

摘要

A shunt capacitor includes first and second zigzag wirings having different lengths, formed in a first wiring layer, third and second zigzag wirings having different lengths, formed in a second wiring layer, an induction device and a ground. The first and fourth zigzag wirings are connected to the induction device, and the second and third zigzag wirings are connected to the ground. The first and second zigzag wirings and the third and fourth zigzag wirings cross each other three-dimensionally.

主权项

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,
a K-th layer wiring provided in at least a K-th wiring layer, where K is any one of 1 to N−1, anda (K+1)-th layer wiring provided in a (K+1)-th wiring layer,the K-th layer wiring including
a first zigzag wiring connected to the induction device, anda second zigzag wiring that is connected to the ground of the microstrip transmission lines, and has a length different from a length of the first zigzag wiring, andthe (K+1)-th layer wiring including
a third zigzag wiring connected to the induction device, anda fourth zigzag wiring that is connected to the ground of the microstrip transmission lines, and has a length different from a length of the third zigzag wiring, wherein 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.