| 摘要 |
A feeder antenna in an air conditioning duct is provided to enable a user to construct a wireless coverage network in a building by using an air conditioning duct without working for a distributor or cable installation. A feeder antenna in an air conditioning duct comprises a first coaxial cable(80), a second coaxial cable(85) and a matching device. The first coaxial cable is installed at one side of the air conditioning duct, and formed having a slope toward upper or down direction by being diverged. The second coaxial cable is installed at the other side in the air conditioning duct, and the matching device performs the matching operation between the first and second coaxial cables.
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