A high-isolation reconfigurable slot antenna based on s-pin solid-state plasma and its frequency reconfiguration method

Abstract

The invention discloses a high-isolation reconfigurable slot antenna based on S-PIN solid-state plasma and its frequency reconfiguration method. The antenna is sequentially arranged with a metal floor, a dielectric substrate and a radio frequency PCB board from top to bottom, and the bottom of the dielectric substrate is 1. The first microstrip feeder and the second microstrip feeder that work independently of each other are printed on the top of the radio frequency PCB board, and a horizontal gap perpendicular to the first microstrip feeder and the second microstrip feeder is opened at the center of the upper surface of the metal floor. Different positions of the horizontal gap are filled with several segments of S-PIN solid-state plasma independent of each other. The equivalent length of the antenna radiation can be changed by controlling the on-off of the S-PIN solid-state plasma to realize reconfigurable antenna frequency. When the first microstrip feeder works, control the S-PIN solid-state plasma directly above the second microstrip feeder to cut off the AC signal fed in from the first microstrip feeder, and the present invention realizes reproducible antenna frequency At the same time, high isolation 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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