BAND COMBINER HAVING COMMON POLE DESIGN FOR MINIMIZING INTERFERENCE WHEN COMBINING DIFFERENT FREQUENCIES

摘要

The present invention relates to a band combination apparatus. An object of the present invention is to provide a band combination apparatus with a common pole design applied for minimizing interference when combining different frequencies, in which a connection structure connected to individual channels and connected to an output port at a center portion thereof is formed in an integrated manner when a body is molded by injection without using combination wirings in which a plurality of strip wirings connect a plurality of channel filter units and the output port, thereby enabling the strip wirings and the combination wirings not to be connect from the individual channels, having different frequencies for each service provider, to the output port. For this purpose, a band combination apparatus configured to perform reception in a plurality of different frequency bands and perform transmission by using one antenna according to the present invention comprises: a plurality of channel filters each of which is constituted by connecting a plurality of cavities, and in which access ports are connected to cavities at one end thereof; and a band combination unit in which a connection portion adapted to be connected to one antenna at a center thereof, a plurality of signal connection walls are formed around the connection portion, and an end portion of each of the signal connection walls extends to an inside of a cavity disposed at one end of each of the channel filters, wherein the signal connection walls comprises: bases which are formed at portions of the signal connection walls in a downward direction, and each of which, on one side of a corresponding base, is connected to the connection portion of the band combination unit and, on the remaining side of the corresponding base, extends to the inside of the cavity disposed at one end of each of the channel filters and is connected to a frequency resonator; and upper side extension portions which extend from the bases in an upward direction, and in which separation portions adapted to be spaced apart from the connection portion and frequency resonators are formed, thereby matching impedance based on the upper side extension portions and the separation portions.