Single-board microstrip slot phased-array antenna with simple beam control system

Abstract

The invention relates to a single-board microstrip slot phased-array antenna which is based on a single-board system integration technology, compact in structure and simple in beam control system. The single-board microstrip slot phased-array antenna comprises a dielectric substrate, wherein a metallic grounding plate is arranged on one surface of the dielectric substrate, at least two row-direction microstrip lines and a column-direction microstrip line are arranged on the other surface of the dielectric substrate, and equidistant slot or microstrip slot antennae are formed on the metallic grounding plate through etching along straight lines corresponding to all the row-direction microstrip lines; the column-direction microstrip line is connected with one ends of the row-direction microstrip lines respectively through direct current (DC) blocking capacitors, and the other ends of the row-direction microstrip lines are respectively connected with matched loads through DC blocking capacitors; one end of the column-direction microstrip line is connected with a matched load through a DC blocking capacitor, and the other end of the column-direction microstrip line is connected with a radio-frequency terminal through a DC blocking capacitor; and row-direction barium strontium titanate (BST) strips are respectively arranged between all the row-direction microstrip lines and the dielectric substrate, and a column-direction BST strip is also arranged between the column-direction microstrip line and the dielectric substrate.

Description

1. Technical field: [0001] The invention relates to a single-board microstrip slot phased array antenna based on single-board system integration technology, compact structure and very simple wave control system. The antenna can be used for portable low-cost millimeter-wave real-time imaging and radar systems. 2. Background technology [0002] Antenna is an essential and important part of systems such as radar, millimeter wave imaging and wireless communication. The beam pointing of the antenna transmitting or receiving electromagnetic waves requires regular movement in many applications (such as target search radar or millimeter wave scanning imaging system) , that is, scan. The scanning of the antenna beam can be realized by means of mechanical driving, and also can be realized by means of electrical control. Mechanical scanning is the beam scanning realized by the mechanical movement of the antenna according to the instruction. The scanning rate of the antenna is not high...

AI Technical Summary

Problems solved by technology

[0004] The traditional phased array antenna system is composed of a large number of phase shifters (Phase shifter-PS) and antennas (Antenna) connected to each other. These phase shifters are independent devices, except for connecting radio frequency (Radio Frequency-RF) lines In addition, they are also connected to their own beam control lines (Control Line-CL) and connected to the beam controller (BeamController), which makes the traditional phased array system complex, low integration, poor portability, and expensive

Images