Signal branching filter, electronic device using the same, antenna apparatus, and signal transmission system used in all of the above

摘要

A signal branching filter according to the invention is a signal branching filter connected to a network having at least four terminals. The signal branching filter includes a first line one end of which is connected to a first terminal of the network, a second line one end of which is connected to a second terminal of the network, a third line one end of which is connected to a third terminal of network, and a fourth line one end of which is connected to a fourth terminal of the network. The other end of the first line and the other end of the second line are connected to each other at a first node, and the other end of the third line and the other end of the fourth line are connected to each other at a second node. When a signal is received from the first node, a phase difference between a phase of a signal appearing on a second node side of the third line and a phase of a signal appearing on a second node side of the fourth line is almost 180°±360°*n is an integer equal to or larger than 0).

主权项

1. A signal branching filter comprising:
a first line one end of which is connected to a first terminal; a third line one end of which is connected to the first terminal; a second line one end of which is connected to a second terminal; and a fourth line one end of which is connected to the second terminal, wherein the other end of the first line and the other end of the second line are connected to a first node, the other end of the third line and the other end of the fourth line are connected to a second node, and when a signal is received from the first node, a phase difference between a phase of a signal appearing on the second node side of the third line and a phase of a signal appearing on the second node side of the fourth line is 180°.