A Four-band Microstrip Reflectarray Antenna

A technology of reflectarray antennas and reflectarrays, which is applied in the directions of antennas, antenna arrays, and individually powered antenna arrays, etc., can solve problems such as limited dual-band, and achieve the effects of easy engineering implementation, high engineering application value, and good quad-band radiation performance
CN105514622BActive Publication Date: 2018-11-13NAT SPACE SCI CENT CAS
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
NAT SPACE SCI CENT CAS
Publication Date
2018-11-13

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Abstract

The invention relates to a four-frequency microstrip reflective array antenna which comprises a feed source and a microstrip reflective array. The feed source is a pyramidal horn antenna. The microstrip reflective array comprises a plurality of uniformly arranged single-layer cross-shaped oscillator units and double-layer rectangular plaster units, wherein the plurality of single-layer cross-shaped oscillator units are arranged in lines in the transverse direction and are arranged in rows in the longitudinal direction. Four double-layer rectangular plaster units are distributed at the periphery of each single-layer cross-shaped oscillator unit. The distances between the center of each single-layer cross-shaped oscillator unit and the four adjacent double-layer rectangular plaster units are same. The working frequencies of the four-frequency microstrip reflective array antenna are 9GHz, 13.58GHz, 24GHz and 30GHz. The single-layer cross-shaped oscillator units operate in 9GHz and 13.58GHz through two directions which are crossed with each other. The double-layer rectangular plaster units operate in 24GHz and 30GHz through two directions which are crossed with each other.
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Description

technical field

[0001] The invention belongs to the technical field of antennas, in particular to a four-frequency microstrip reflective array antenna. Background technique

[0002] Parabolic antennas and array antennas are widely used as traditional spaceborne antennas. Although the parabolic antenna has high gain and wide operating frequency range, it has the disadvantages of large size, heavy weight, difficult installation, and difficult processing, especially at high frequencies. Although the array antenna is small in size, flexible in scanning mode and wide in range, it has low efficiency, complex feeding network, large transmission loss, and expensive active devices loaded. These shortcomings limit the application of the above two antennas in radar, satellite communication, etc. to a certain extent.

[0003] The microstrip reflectarray antenna is an antenna form that combines several advantages of the parabolic antenna and the array antenna. It is composed of a feed ...

Claims

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