Adjusting device feeding a multi-antenna, multi-frequency antenna and a wireless communication

A multiband antenna (5) comprising one or more radiant section (4a, 4b) with different lengths and a computer feed adjusting the multiband antenna (5), wherein each of the radiant sections (4a, 4b) it is configured to transmit a signal to a section (2) in the power supply equipment adjusting the multiband antenna (5) and receive a signal transmitted from the section (2) power signal; the adjustment equipment supply comprises: a section (1) grounding; and section (2) connected to a power source signal, wherein a signal of the signal source is input section (2) feed; characterized in that, the adjustment equipment supply further comprises: two or more lead cable grounding different length, wherein one end of each lead wire grounding is electrically connected to the section (2) feed, the other end is electrically connected to the section (1) ground, at least two leads of cable grounding each comprise a component (3) filtering serial signal, each of the respective components (3) filtering signal is configured to prevent passage therethrough lower than a frequency point corresponding to the component signal filtering signal, and corresponding to a component frequency point (3) it signal filtering in a lead cable grounding with a shorter length is greater than a frequency point corresponding to a component (3) filtering is NaI in a derivation of the grounding cable with a length greater.