Patent ID: 8493162
Filing Date: 2013-07-23
Classification: H01P

Abstract:
1. A combiner/divider circuit comprising: first, second, third, fourth, and fifth transmission lines, each having a signal conductor and a signal-return conductor; the signal-return conductors of the first, second, and third transmission lines at respective first ends of the first, second, and third transmission lines being connected together; the signal conductor of the first transmission line at a second end of the first transmission line forming a sum port; the signal conductor of the second transmission line at the first end of the second transmission line being connected to the signal-return conductor of the fourth transmission line at a first end of the fourth transmission line; the signal conductor of the third transmission line at the first end of the third transmission line being connected to the signal-return conductor of the fifth transmission line at a first end of the fifth transmission line; the signal conductor of the first transmission line at the first end of the first transmission line being connected to the signal conductors of both the fourth and the fifth transmission lines at respective first ends of the fourth and fifth transmission lines; the signal conductors at respective second ends of the third and fourth transmission lines forming a first component port, and the signal conductors at respective second ends of the second and fifth transmission lines forming a second component port; at least a portion of the signal-return conductor of the fourth transmission line being inductively coupled to at least a portion of the signal-return conductor of the fifth transmission line at the respective first ends of the fourth and fifth transmission lines, forming a sixth transmission line, the sixth transmission line conducting a difference signal representative of a difference between signals occurring on the first and second component ports and terminated by a terminating impedance connected between the signal-return conductors of the fourth and fifth transmission lines at a position spaced from the first ends of the fourth and fifth transmission lines.