Innertron, Inc.

Kwang-Myoung Heo

Soo-Duk Seo

A multiplexer with a common port feeding structure is disclosed. The multiplexer with a common port feeding structure of the present invention comprises: a housing comprising an antenna connector connected to an antenna for bidirectional transmitting and receiving and a plurality of input/output connectors bidirectionally inputting and outputting a specific frequency band of wireless signals which are input/output through the antenna; a plurality of band-pass filter units mounted inside the housing to transmit wireless signals at between the antenna connector and the input/output connector to pass a specific frequency band; and a coupling unit having a plurality of feeding members to couple the antenna connector and each of the plurality of band-pass filter units.

Multiplexer with common port feeding structure

Discloses are a transmission line having variable characteristic impedance and a combiner configured to combine a plurality of filter by use of the transmission line. The transmission line in accordance with an embodiment of the present invention includes: a first filter junction being connected with a first RF filter and configured to obtain an output signal of the first RF filter; a second filter junction being connected with a second RF filter and configured to obtain an output signal of the second RF filter; a first variable impedance section in which a phase of the output signal of the first RF filter is matched with a preset phase; and a second variable impedance section in which a phase of the output signal of the second RF filter is matched with the preset phase.

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Bucheon-si, South Korea

Kwang-Myoung Heo