Patent ID: 9583841
Date: 2017-02-28
CPC Classifications: H01P,H01Q,H03H,H05K

Claim:
1. A balun suitable for realizing a wideband transition in the radio frequency band from an unbalanced transmission line to a balanced transmission line, the balun comprising: an input terminal having a signal connection point and a screen connecting point; a two conductor output terminal; a layered structure comprising a number of conducting layers and dielectric layers alternatingly arranged on top of each other, the layered structure comprising at least one ground plane layer, and at least one signal transmission layer; an unbalanced signal path being connected to the signal connection point and the screen connecting point of the input terminal; a balanced signal path connected to the output terminal and being part of the layered structure; and a balun transition region for transforming the signal from an unbalanced signal to a balanced signal; wherein: