| 主权项 |
1. A Radio Frequency (RF) coupler comprising:
a first transmission line having a first line portion and a second line portion connected in parallel, a first end of the first transmission line coupled to an input port for receiving an RF input signal, a second end of the first transmission line coupled to an output port for providing an RF output signal; and a second transmission line located between the first line portion and the second line portion such that magnetic field produced due to the RF input signal in the first line portion and the second line portion envelops the second transmission line, the second transmission line being located at a predefined gap from the first line portion and the second line portion respectively, a first end of the second transmission line being configured as a coupled port for providing a coupled RF signal, a second end of the second transmission line being coupled to a termination element to form an isolation port; and an inter-layer dielectric (ILD) formed in a cross-over intersection between the first transmission line and the second transmission line, the inter-layer dielectric being further utilizable to form the termination element between the second transmission line and a via contact pad. |
