Patent ID: 9559432
Date: 2017-01-31
CPC Classifications: H01Q

Claim:
1. A multi-frequency shared antenna, comprising a low frequency radiation array and a first high frequency radiation array both of which are disposed on a reflection plate, wherein, the low frequency radiation array comprises a plurality of low frequency radiation units axially arranged on at least two parallel axes, and said low frequency radiation units on said two axes are misaligned along a direction orthogonal to these axes; the pitch between said two axes of the low frequency radiation array is smaller than or equal to a half wavelength of the low frequency radiation array at its highest working frequency point, and it is also greater than or equal to a half wavelength of the high frequency radiation array at its highest working frequency point; each low frequency radiation unit comprises two pairs of symmetrical dipoles arranged such that their polarization is orthogonal to each other, and two symmetrical dipoles of one pair of symmetrical dipoles of at least one low frequency radiation unit of the low frequency radiation array have different feed-in power settings; the first high frequency radiation array comprises a plurality of high frequency radiation units, at least some of the high frequency radiation units are arranged on an axis which overlaps one of said two parallel axes of the low frequency radiation array, in all high frequency radiation units arranged on said axis which overlaps one of said two parallel axes, at least one high frequency radiation units is nested with a corresponding low frequency radiation unit and an orthogonal projection area of each of the at least one nested high frequency radiation unit on the reflection plate falls within the orthogonal projection area of each corresponding low frequency radiation unit on the same reflection plate.