Patent ID: 9391584
Filing Date: 2016-07-12
CPC Classification: H03H

Claim Text:
1. A balun device, configured to transform a single-ended signal into a differential signal, comprising: a first output port comprising a first output terminal; a second output port comprising a second output terminal; an input port, comprising: a matching circuit electrically connected to the first output port, the second output port and the input port, wherein the matching circuit is configured to match and transform the single-ended signal into the differential signal outputted between the first output port and the second output port; wherein the first output port further comprises a first output reference terminal, and the second output port further comprises a second output reference terminal, in which the first output reference terminal is electrically connected to the second output reference terminal, the first output reference terminal is not electrically connected to the input single-ended signal terminal, and the first output reference terminal and the second output reference terminal are configured to provide the first output terminal and the second output terminal a reference voltage level respectively.