WIDE BAND DIRECTIONAL COUPLER

摘要

A wide band directional coupler comprises a first transmission line, a second transmission line and at least one inductor, wherein the first transmission line and the second transmission line are adjacent each other, and the inductor connects to the second transmission. As a RF signal passes through the first transmission line, the second transmission line will couple with the RF signal in the first transmission line to generate a coupling signal. The inductor is connected to the second transmission line to improve the coupling factor and/or the insertion loss of the wide band directional coupler at high frequency band.

主权项

1. A wide band directional coupler, comprising:
a first transmission line for transmitting a RF signal and comprising a first end and a second end; a second transmission line being adjacent said first transmission line and comprising a third end and a fourth end; and at least one inductor electrically connected between said third end and said fourth end, wherein when said RF signal passes through said first transmission line, said second transmission line couples with said RF signal of said first transmission line to generate a coupling signal.