A Half-mode Substrate Integrated Waveguide Leaky-Wave Antenna

Abstract

The invention provides a semi-mode substrate integrated waveguide wave leakage antenna. The semi-mode substrate integrated waveguide wave leakage antenna comprises a dielectric substrate, a first metal patch, a second metal patch and a variable capacitance diode. By changing a capacitance value of the variable capacitance diode, an antenna directional diagram at a fixed frequency point can change with the change of the variable capacitance diode, the mode reconfiguration function can also be achieved when a left- and right-handed circular polarization and + / -45 degree linear polarization of the antenna are achieved, and the composite reconfiguration function of polarization and mode and the frequency scanning function are further achieved. Various working modes are achieved on the antenna, the manufacturing cost of the antenna is reduced, the space is saved, and moreover, the mutual interference of antennas on the same platform can be effectively suppressed.

Description

technical field [0001] The invention relates to the technical field of communication, and more specifically, to a half-mode substrate integrated waveguide leaky-wave antenna. Background technique [0002] In the prior art, a structure formed by a one-dimensional array of metal vias is proposed, and the array of metal vias can play a role similar to that of a metal wall. Combining two rows of metal vias and upper and lower conductor surfaces can simulate a dielectric-filled rectangular metal waveguide to form a substrate-integrated waveguide. [0003] Compared with the traditional rectangular metal waveguide, the substrate integrated waveguide also has the advantages of good propagation characteristics, low loss, low radiation, high Q value and high power capacity. And this structure is easy to integrate, which greatly reduces the weight, size and price of the original microwave and millimeter wave waveguide devices and other microwave passive devices based on waveguides, wh...

AI Technical Summary

Problems solved by technology

[0006] The polarization and beam direction of the traditional half-mode substrate integrated waveguide slot antenna are fixed, and the radiation direction and polarization must be changed by manual or mechanical adjustment or replacement of the antenna's position and polarization, which has low sensitivity and low failure rate. high

At the same time, the working mode is single, and multiple antennas need to be installed to achieve different working modes, resulting in waste of resources and increased costs

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