An antenna radiation unit and an electricity feeding method
An antenna radiation and power feeding technology, applied in the field of communication, can solve problems such as complex structure, unbalanced cables, and difficulty in controlling the consistency of vibrator units
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Embodiment 1
[0031] Such as figure 1 As shown, an antenna radiating unit 11 provided by an embodiment of the present invention is used to be installed on a metal reflector 10 to form a mobile communication base station antenna. Wherein, the antenna radiating unit 11 includes two pairs of dipole radiating units with orthogonal polarization, and each dipole radiating unit is respectively installed on the metal reflector 10 through a balun (balanced-unbalanced converter) . Each dipole radiating unit respectively includes two unit arms symmetrically fixed on the balun. Wherein, each balun includes two supporting columns arranged in parallel and adjacently, and the two unit arms in each dipole radiating unit are symmetrically fixed on the two supporting columns respectively.
[0032] Specifically, in the embodiment of the present invention, the first unit arm 1a and the second unit arm 1b are fixed on the first balun 1, the third unit arm 2a and the fourth unit arm 2b are fixed on the second ...
Embodiment 2
[0041] Such as Figure 4 As shown, the embodiment of the present invention is a modified structure of the first embodiment. The first to fourth baluns in the embodiment of the present invention are not integrated through a base, but are separately installed on the metal reflector.
[0042] Other structures of this embodiment of the present invention are the same as those of Embodiment 1, and will not be repeated here.
Embodiment 3
[0044] Such as Figure 5 As shown, the embodiment of the present invention is a modified structure of the first embodiment. In each dipole radiation unit in the embodiment of the present invention, the angle between the two unit arms fixedly connected to the upper end of the balun is an obtuse angle, so that the projection shape of all the unit arms on the reference plane is a center-symmetrical polygon. It should be noted that, in combination with Embodiment 1, the included angles between the two unit arms in each dipole radiation unit in the present invention can be various angles, and the projection of the unit arms on the reference plane can also be a curve, only the final guarantee It is sufficient that the projections of all unit arms on the reference plane enclose a centrally symmetrical polygon or circle.
[0045] In particular, in the embodiment of the present invention, the coaxial cable 12 whose characteristic impedance is Z1 is selected. The inner conductor 120 o...
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