Ultra-wideband planar phased array antenna and beam scanning method thereof

An ultra-broadband, planar phase technology, applied to antennas, devices that enable antennas to work in different bands at the same time, antenna coupling, etc., can solve the problems of high antenna profile, low utilization rate, and large loss, and achieve frequency bandwidth and increase The effect of low utilization rate and loss

Inactive Publication Date: 2018-01-30
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an ultra-wideband planar phased array antenna and its beam scanning method, which can solve the problems of high antenna profile, large loss and low utilization rate in the prior art

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  • Ultra-wideband planar phased array antenna and beam scanning method thereof
  • Ultra-wideband planar phased array antenna and beam scanning method thereof
  • Ultra-wideband planar phased array antenna and beam scanning method thereof

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Embodiment Construction

[0038] The present invention will be described in further detail below with reference to the embodiments of the drawings:

[0039] The design process of the ultra-wideband planar phased array mainly includes: the analysis and design of the antenna unit of each frequency band; the design of the liquid crystal phase shifter unit of each frequency band; the block array design of the multi-band antenna unit array. First, complete the design of the antenna unit and the liquid crystal phase shifter unit according to the different technical indicators of each frequency band array, and then complete the design of the ultra-wideband planar array unit according to the antenna unit and the liquid crystal phase shifter unit, ensuring that the ultra-wideband planar array unit of each frequency band In the case of coplanarity, the impedance matching method is adopted to select the working frequency band to complete the overall design of the four frequency band array units. The design of the ar...

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Abstract

The invention discloses an ultra-wideband planar phased array antenna and a beam scanning method thereof, and relates to the technical field of antennas. The ultra-wideband planar phased array antennacomprises a dielectric substrate, and a liquid crystal phase shifter network which is externally applied with a bias voltage and arranged on the dielectric substrate, wherein the liquid crystal phaseshifter network is composed of a plurality of liquid crystal phase shifter units. An antenna unit array which covers a plurality of frequency bands is arranged above the liquid crystal phase shifternetwork; and the antenna unit array is composed of a plurality of antenna units, wherein the antenna unit is a Vivaldi antenna with a slot line, and a liquid crystal phase shifter is powered through amicrostrip line-slot line structure. Compared with the prior art, the problems that the ultra-wideband phase-controlled profile is high in profile degree, large in antenna loss and low in utilizationrate are solved.

Description

Technical field [0001] The present invention relates to the field of antenna technology, in particular to an antenna technology for ultra-wideband planar phase control. Background technique [0002] Ultra-wideband phased array radar has unique advantages in anti-interference, low probability of interception, high resolution, etc., and modern radars have gone beyond the scope of traditional radars and are moving towards the integration of radar, electronic warfare, communications, navigation, and identification of friend or foe In the direction of convergence, these requirements are usually realized on the same antenna. Therefore, ultra-wideband phased array radars have emerged, and ultra-wideband phased arrays that can achieve large scanning angles are the core. In radar systems, antennas with a relative bandwidth of more than 25% are defined as ultra-wideband antennas. [0003] Most of the existing ultra-wideband array antennas use traveling wave antennas or monopole antenna stru...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q1/52H01Q3/36H01Q5/28H01Q5/307H01Q5/55H01Q13/08H01Q21/00H01Q21/30
Inventor 蒋迪万应禄刘宇鹏丁萍李潇雨程婕
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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