2results about How to "Reduce mutual coupling" patented technology

The application relates to a satellite communication hetero-frequency hetero-circular polarization common-aperture antenna, belonging to the radio frequency communication field, which comprises a dielectric plate assembly, an antenna radiation unit assembly and a SIW feeding structure assembly; the dielectric plate assembly comprises three layers of dielectric plates and provides support for the whole antenna; the antenna radiation unit assembly comprises one low-frequency antenna radiation unit and four high-frequency antenna radiation units, the low-frequency antenna radiation unit is arranged in the middle of the four high-frequency antenna radiation units, and the four high-frequency antenna radiation units adopt a rotating layout; the SIW feeding structure assembly is used for feeding the low-frequency antenna radiation unit and the high-frequency antenna radiation unit. The application can guarantee the normal work of the high-frequency and low-frequency antenna radiation units in the working frequency bands, and present filtering characteristics in the non-working frequency bands, so that the port isolation between the antenna units of different frequency bands is improved. The filtering effect of the SIW feeding cavity can be adjusted by changing the size of the SIW feeding cavity.

This invention provides a decoupling structure for a millimeter-wave circularly polarized antenna array and a wireless communication device. The decoupling structure is used to resonate and decouple the millimeter-wave circularly polarized antenna array. The decoupling structure comprises, from top to bottom, an upper decoupling dielectric substrate and a lower decoupling dielectric substrate. An upper metal decoupling structure is disposed on the upper surface of the upper decoupling dielectric substrate, and a lower metal decoupling structure is disposed on the upper surface of the lower decoupling dielectric substrate. The upper metal decoupling structure includes a transverse main trunk and several longitudinal branches; the lower metal decoupling structure includes several longitudinal metal branches, with the lengths of the transverse main trunk, longitudinal branches, and longitudinal metal branches decreasing sequentially. Millimeter-wave circularly polarized antenna arrays are spaced apart at the bottom of the lower decoupling dielectric substrate to form a wireless communication device. The resonant decoupling structure of this invention suppresses port coupling between antenna elements while expanding impedance bandwidth and bandwidth.