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Single-layer triple-frequency micro-strip reflection array antenna

A reflect array antenna and reflect array technology are applied to antennas, devices that make antennas work in different bands at the same time, electrical components, etc., which can solve the problem of affecting the gain and side lobes of the upper unit array, the difficulty of aligning the double-layer structure, and the high processing cost. problem, to achieve the effect of good multi-frequency radiation performance, easy engineering implementation, and simple structure

Active Publication Date: 2016-01-20
NAT SPACE SCI CENT CAS
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Problems solved by technology

However, the double-layer structure has its inherent disadvantages: first, the shielding of the upper unit and its floor for the lower unit will have a great impact on the gain of the frequency band in which the lower unit works; secondly, the resonance mode excited by the lower unit will affect the upper unit. Gain and sidelobes of cell arrays; again, bilayer structures are difficult to align and costly to process

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  • Single-layer triple-frequency micro-strip reflection array antenna
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  • Single-layer triple-frequency micro-strip reflection array antenna

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Embodiment Construction

[0034] A single-layer triple-band microstrip reflectarray antenna according to the present invention will be described in detail below with reference to the drawings and embodiments.

[0035] A single-layer triple-frequency microstrip reflectarray antenna of the present invention includes: a feed source and a microstrip reflectarray; the microstrip reflectarray includes: several cross-shaped oscillator units and circular dipoles uniformly arranged on the upper surface of a dielectric substrate A multi-resonance unit composed of a ring and a circle coaxially; the cross-shaped oscillator unit works in the X-band and the Ku-band through two intersecting directions, and the multi-resonance unit works in the Ka-band.

[0036] Microstrip reflectarray antenna based on the above structure, such as figure 1 As shown, the microstrip reflectarray is composed of units of different frequency bands arranged staggeredly on the dielectric substrate 3 . Among them, the X-band and Ku-band unit...

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Abstract

The invention provides a single-layer triple-frequency micro-strip reflection array antenna comprising a feed source and a micro-strip reflection array. The micro-strip reflection array comprises a plurality of cross vibrator units which are evenly arranged on the upper surface of a dielectric substrate, and multi-resonant units of which each is formed by combining a circular ring and a circle coaxially. The cross vibrator units respectively work in an X band and in a Ku band through two intersecting directions. The multi-resonant units work in a Ka band. As the cross vibrator units and the multi-resonant units are arranged and the mutual coupling effect between the bands is taken into full account, the single-layer triple-frequency micro-strip reflection array antenna of the invention can simultaneously work in the X, Ku and Ka bands. The single-layer structure makes the aperture of the reflection array antenna fully reused. The micro-strip reflection array antenna of the invention has good multi-frequency radiation performance, has a relatively simple structure, is easy to implement in engineering, and has high value of engineering application.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to a single-layer triple-frequency microstrip reflective array antenna. Background technique [0002] Radar, satellite communications, space detection technology, and other long-distance wireless transmission systems require antennas with high gain, high efficiency, and beam scanning performance. Traditional high-gain antennas mainly include parabolic antennas or array antennas. Although the parabolic antenna has a simple structure and a wide operating frequency range, it is bulky and bulky, has poor concealment, is difficult to process, and requires mechanical rotation to realize beam scanning. The microstrip array antenna is easy to process, the beam is scanned by the phase of the control unit, the scanning method is flexible and the range is large, but its feeding network is complex, the transmission loss is large, the efficiency is difficult to guarantee, and the active devices...

Claims

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Application Information

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IPC IPC(8): H01Q13/02H01Q15/14H01Q19/10H01Q5/28
Inventor 薛飞王宏建易敏陈雪刘广
Owner NAT SPACE SCI CENT CAS
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