Public port device of multiplexer

The utility model discloses a common port device of a multiplexer. The common port device comprises a main rod transmission line; the ANT port is connected to one end of the transmission line of the main rod; the first combining port is connected to the position, close to the ANT port, of the main rod transmission line; the first filter is communicated with the first combining port; the second combining port is connected to the other end of the main rod transmission line; the public cavity is communicated with the second combining port; and the second-path filter is communicated with the second combining port through the public cavity. The beneficial effects of the utility model are that the combination ports can generate various changes according to specific structure requirements, and the required combination structure can be combined at will. 本实用新型公开了一种多工器公共端口装置，它包括：主杆传输线；ANT端口，所述ANT端口接入于主杆传输线的一端；第一合路端口，所述第一合路端口接入在主杆传输线靠近ANT端口处；与第一合路端口接通的第一路滤波器；第二合路端口，所述第二合路端口接入于主杆传输线的另一端；公共腔，所述公共腔与第二合路端口接通；第二路滤波器，所述第二路滤波器