A Microstrip Reflective Array Antenna Using Sawtooth Floor
A technology of reflectarray antenna and reflectarray, which is applied in the direction of antenna, antenna grounding switch structure connection, electrical components, etc., can solve the problem of increasing the volume of reflectarray antenna, and achieve the effect of simple structure, accurate phase compensation and reduced loss
Active Publication Date: 2022-01-25
NAT SPACE SCI CENT CAS
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Problems solved by technology
Aiming at the reflectarray floor specular reflection loss problem, using a larger focal-diameter ratio can reduce the specular reflection loss of the reflectarray antenna floor to a certain extent. However, on the one hand, using a larger focal-diameter ratio will increase the volume of the reflectarray antenna. On the other hand, it does not fundamentally solve the problem of reflective array antenna floor specular reflection loss
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Embodiment 1
[0064] Such as Figure 6 Shown is a schematic diagram of a reflectarray antenna using a zigzag floor structure of the present invention, including: a feed source and a microstrip reflectarray; the feed source is a pyramidal horn antenna; the microstrip reflectarray includes several all-metal Ring structural unit and zigzag floor on both sides.
[0065] The all-metal two-sided ring structure unit adjusts the reflection phase by adjusting the variable d, and then adjusts the phase distribution on the surface of the reflection array.
[0066] The zigzag floor is made according to the reflection law or parabolic equation.
[0067] In order to facilitate comparative analysis of the sawtooth floor structure of the present invention for the reduction of reflectarray antenna loss, the sawtooth floor structure in Embodiment 1 is replaced with a smooth floor structure equal to its average thickness, as Figure 7 shown. It is worth noting that the reflectarray antenna with the zigzag ...
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Abstract
The invention belongs to the technical field of antennas, and in particular relates to a microstrip reflectarray antenna using a zigzag floor, which works in the Ku band. The antenna includes: a feed source and a microstrip reflectarray; wherein the feed source is a pyramid horn Antenna; the microstrip reflective array includes three upper, middle and lower layers, which are phase-shifting unit layer, air medium layer and zigzag metal floor in sequence; the zigzag metal floor includes a series of zigzag floor unit structures with different surface slopes. The present invention cleverly utilizes the zigzag unit structure to reflect the incident electromagnetic waves at different unit positions back to the direction of the main beam, making the phase compensation of the reflectarray antenna more accurate and reducing the loss of the reflectarray antenna; without increasing the volume of the reflectarray antenna In the case of low-loss reflectarray antennas, it fundamentally solves the problem of specular reflection loss on the reflectarray antenna floor, which has important reference significance for the design of low-loss reflectarray antennas.
Description
technical field [0001] The invention belongs to the technical field of antennas, in particular to a microstrip reflector array antenna using a zigzag floor. Background technique [0002] With the rapid development of radar, satellite communication and deep space detection technology, the demand for high-gain antennas is increasing. Traditional high-gain antennas mainly include parabolic antennas and array antennas. Parabolic antennas have the advantages of wide bandwidth and high gain. It is bulky and heavy, and requires high precision in the manufacture of antenna surfaces in high-frequency bands; phased array antennas use phase shifters to adjust the radiation phase of each unit to achieve beam scanning, but its feed network is too complicated, which not only increases Difficulty in design and processing cost, and increase transmission loss and reduce work efficiency. [0003] The microstrip planar reflectarray antenna is a high-gain antenna developed based on microstrip ...
Claims
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IPC IPC(8): H01Q15/14H01Q1/50
CPCH01Q15/14H01Q1/50
Inventor 任佳伟王宏建施伟春马民政
Owner NAT SPACE SCI CENT CAS