Microstrip structure array capable of increasing antenna gain of different resonant frequency points and application

Abstract

The invention provides a microstrip structure array capable of increasing the antenna gain of different resonance frequency points and application. The array comprises at least one four-unit array, wherein each four-unit array comprises four nested resonant structures, and the four nested resonant structures are arranged at the same interval in a central symmetry mode; and each nested resonant structure is formed by nesting two square annular microstrip lines with openings on the same side edge, the openings of the inner ring and the outer ring of each microstrip line are bent towards the interior of the ring, and the outer rings of every two transverse nested resonant structures are connected through an inductor. The micro-strip structure array has the characteristic that the micro-strip structure array shows a near-zero refractive index on incident electromagnetic waves in certain frequency bands, and the antenna gain can be improved under the condition that the profile of the antenna is not obviously increased. The array is placed right in front of an antenna which works in frequency band in which the array shows a zero refractive index, and the distance between the array and the antenna is properly adjusted, so that the forward radiation gain of the antenna can be remarkably enhanced.

Description

Technical field [0001] The present invention relates to a microstrip structure array capable of increasing different resonant frequency point antenna gain and use. Background technique [0002] In modern communication, in the field of satellite communication and radar detection, the antenna radiation beam is required to face a predetermined direction, and the gain is as high as possible. In order to achieve these high gain, high-directional antennas, generally employed structures having a reflective device, such as a parabolic antenna. As compared with general conventional antennas, such as untenited antennas, the parabolic antenna is more cumbersome, and the design and processing is complex, which requires improvement of radiation properties of conventional antennas. For example, in a single microstrip antenna design, to improve the radiation gain of the antenna, generally use the following methods: the back surface increase the reflector; load the parasitic radiation patch to i...

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Problems solved by technology

[0004]The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a kind of characteristic that shows near-zero refractive index to incident electromagnetic waves in certain frequency bands, and can be used in different Improve the antenna gain while significantly increasing the antenna profile; place the array directly in front of the antenna that works in the zero-refractive-index frequency band of the array, and properly adjust the distance between it and the antenna, which can significantly enhance the forward radiation gain of the antenna. Increase the microstrip structure array of antenna gain at different resonant frequency points, and provide the use of the array

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