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Interdigital slot unit loaded with capacitance variable diodes and reconfigurable reflection array antenna

A reflect array antenna and varactor diode technology, which is applied in the directions of individually powered antenna arrays, antennas, antenna arrays, etc., can solve the problems of small phase shift range, narrow operating bandwidth, and limited application range of reconfigurable reflect array antennas. Achieve the effect of improving the phase shift range and high angle stability

Inactive Publication Date: 2017-10-24
NAT SPACE SCI CENT CAS
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Problems solved by technology

[0004] At present, the existing reconfigurable reflectarrays often adopt a patch structure, but the ordinary patch unit has a narrow working bandwidth and a small phase shift range, which limits the application range of the reconfigurable reflectarray antenna.

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  • Interdigital slot unit loaded with capacitance variable diodes and reconfigurable reflection array antenna
  • Interdigital slot unit loaded with capacitance variable diodes and reconfigurable reflection array antenna
  • Interdigital slot unit loaded with capacitance variable diodes and reconfigurable reflection array antenna

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Embodiment Construction

[0027] A varactor-loaded finger slot unit and a reconfigurable reflectarray antenna of the present invention will be further described in detail below with reference to the accompanying drawings.

[0028] As shown in Fig. 1 (a), a kind of finger-shaped gap unit loaded with varactor diode provided by the present invention, in the present embodiment, the side length P=11mm of this unit has three layers, as Fig. 1 (b) As shown, from top to bottom are the metal patch layer 1, the dielectric layer 2 and the metal ground layer 3. The size of the metal patch layer 1 is W×L, and W=4.6mm and L=5.5mm can be set. The metal patch layer 1 is provided with a transverse slit, a first longitudinal slit and a third longitudinal slit of one length, and a second longitudinal slit of another length; the width of the transverse slit is g, and the first longitudinal slit The slit, the second longitudinal slit and the third longitudinal slit are parallel to each other, and the first and third longi...

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Abstract

The present invention provides an interdigital slot unit loaded with capacitance variable diodes and a reconfigurable reflection array antenna. The interdigital slot unit comprises a metal patch layer, a dielectric layer and a metal grounding layer which are sequentially stacked from top to bottom; a transverse slot, a first longitudinal slot, a third longitudinal slot and a second longitudinal slot are formed in the metal patch layer; the first longitudinal slot and the third longitudinal slot have the same length and are symmetrically distributed at two sides of the second longitudinal slot, and the second longitudinal slot has the other length; the first longitudinal slot, the second longitudinal slot and the third longitudinal slot are parallel to one another; the first transverse slot vertically passes through the center of the first longitudinal slot, the center of the second longitudinal slot and the center of the third longitudinal slot; two ends of the transverse slot are respectively loaded with two capacitance variable diodes; and the length setting of the three longitudinal slots satisfies a condition that the resonance frequency of the first longitudinal slot and the third longitudinal slot is 1.2 times to 1.5 times of the resonance frequency of the second longitudinal slot. The aperture efficiency of the reconfigurable reflection array antenna designed on the basis of the interdigital slot unit can reach 74%.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a finger-shaped slot unit loaded with varactor diodes and a reconfigurable reflective array antenna. Background technique [0002] Phased array antennas are widely used in radio systems such as point-to-point communication, new system radar and precision navigation, and their beam pointing can be flexibly and freely controlled. However, due to the existence of mutual coupling between adjacent elements of the phased array antenna, blind spots and grating lobe effects appear in the scanning area, which deteriorates the performance of the antenna; and each element of the phased array antenna needs to be equipped with an electronic phase shifter and Microwave T / R components, for medium and large-scale phased arrays, the feed network is very complex, and the power consumption is high, the loss is large, the processing cost is high, and the structure is heavy, which limits its applica...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q3/30H01Q5/10H01Q21/06
CPCH01Q1/38H01Q3/30H01Q5/10H01Q21/065
Inventor 刘广王宏建薛飞朱迪刘思昱
Owner NAT SPACE SCI CENT CAS
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