4results about How to "High port isolation" patented technology

An ultra-wideband end-fire antenna with a common aperture embedded in a metal carrier includes a metal cavity with a coaxial cable compartment on one side. A radiator module is connected to the bottom of the metal cavity via a radiator fixing slot. The radiator module includes a common aperture antenna substrate. A low-frequency radiator is printed on the side of the common aperture antenna substrate closer to the coaxial cable compartment, and a high-frequency radiator is printed on the side farther from the coaxial cable compartment. This invention utilizes a dual-band antenna in a common aperture design to enhance the channel capacity and anti-fading capability of the communication system. At the same time, by achieving the antenna's carrier conformal characteristics, high isolation, and miniaturization, it enriches the antenna's application scenarios and improves the overall performance of the communication system.

The application discloses a kind of full duplex antennas based on slot coupling differential feed, including two pairs of butterfly dipole antennas, first dielectric plate, four groups of vertically placed signal transmission lines, metal floor, second dielectric plate, two U-shaped feed networks and third dielectric plate;The application is placed on the upper surface and lower surface of first dielectric plate by setting two pairs of butterfly dipole antennas, to radiate horizontal polarization and vertical polarization wave, in order to generate differential signal, four T-shaped slots with the same size are etched on the metal floor, then the differential signal at T-shaped slot is transmitted to the feed position of dipole antenna by four groups of vertically placed transmission lines, and the two U-shaped feed networks are placed vertically without dielectric layer, so as to obtain larger port isolation, which can be applied to simultaneous same frequency full duplex communication system, and wireless signals can be transmitted and received simultaneously at the same frequency, thereby improving spectrum utilization efficiency.

The invention provides a low-RCS (radar cross section) dual-polarized antenna compact unit based on secondary interference cancellation. The low-RCS dual-polarized antenna compact unit comprises a first dielectric plate, a second dielectric plate, a radiation patch, a metal floor and a dual-polarized feed network. The radiation patch is composed of four metal patches which are symmetrically distributed in a 90-degree rotation mode, each patch comprises a triangular part, the first edge of the triangular part faces outwards, and the opposite angles of the triangular part face the center. The metal floor is located on the lower surface of the first dielectric plate, an isolation hole is formed in the metal floor, a preset vertical distance is kept between the metal floor and the radiation patch, and the preset vertical distance is configured to enable scattered waves generated by the radiation patch and scattered waves generated by the metal floor to have a phase difference of 180 degrees + / -37 degrees in a preset frequency band; and the first side of each patch is connected with the floor through a plurality of short-circuit metal through holes which are distributed at equal intervals. And the dual-polarization feed network is positioned on the lower surface of the second dielectric plate, comprises two paths of orthogonal polarization networks, and is connected with the patch through a feed metal through hole penetrating through the isolation hole.