High-isolation reconfigurable slot antenna based on S-PIN solid-state plasma and frequency reconstruction method thereof

Abstract

The invention discloses a high-isolation reconfigurable slot antenna based on SPIN solid-state plasma and a frequency reconstruction method thereof, the antenna is sequentially provided with a metal floor, a dielectric substrate and a radio frequency PCB from top to bottom, and a first microstrip feeder line and a second microstrip feeder line which work independently are printed below the dielectric substrate and above the radio frequency PCB; and a horizontal gap perpendicular to the first microstrip feeder line and the second microstrip feeder line is formed in the center of the upper surface of the metal floor, different positions of the horizontal gap are filled with several sections of SPIN solid-state plasmas which are independent of one another, and the equivalent length of the antenna during radiation is changed by controlling on-off of the SPIN solid-state plasmas. The reconfiguration of the antenna frequency is realized. When the first microstrip feeder line works, the SPINsolid-state plasma right above the second microstrip feeder line is controlled to be cut off, an alternating current signal fed from the first microstrip feeder line is cut off, and high isolation isachieved while antenna frequency reconfiguration is achieved.

Description

technical field [0001] The invention relates to antenna and semiconductor technology, in particular to a high-isolation reconfigurable slot antenna based on S-PIN solid-state plasma and a frequency reconfiguration method thereof. Background technique [0002] In recent years, slot antennas have received extensive attention and research because of their low profile, integration, and ease of array formation. The slot antenna is an antenna in which a slot is opened on a waveguide, a metal plate, a coaxial line or a resonant cavity, and electromagnetic waves radiate to the external space through the slot. It is characterized by light weight, good planar structure and easy conformity with the object of installation. The amplitude distribution of the aperture surface of the slot array antenna is easy to control, the utilization rate of the aperture surface is high, and low sidelobes or extremely low sidelobes can be achieved. At the same time, the slot antenna also has the advan...

AI Technical Summary

Problems solved by technology

For high-frequency antennas, such as millimeter-wave reconfigurable antennas, the slot width is much smaller than the slot length, and the traditional RF switch is difficult to meet the requirements; The high-pass and low-resistance characteristics of the plasma can work in a wider frequency range; 3. S-PIN solid-state plasma can be integrated with the chip antenna or embedded in the antenna PCB dielectric substrate; 4. High power capacity, low loss, switch Fast switching speed

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